Aldeyra Therapeutics Reports Full-Year 2021 Financial Results and Recent Corporate Highlights

On March 17, 2022 Aldeyra Therapeutics, Inc. (Nasdaq: ALDX) (Aldeyra), a biotechnology company discovering and developing innovative therapies for the treatment of immune-mediated diseases, reported recent corporate highlights and financial results for the year ended December 31, 2021 (Press release, Aldeyra Therapeutics, MAR 17, 2022, View Source [SID1234610244]).

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"In addition to our planned completion of clinical development for reproxalap in dry eye disease, 2022 is expected to highlight data milestones for our systemic and retinal disease platforms," stated Todd C. Brady, M.D., Ph.D., President and Chief Executive Officer. "We are excited about the planned release this month of top-line data from our proof-of-concept clinical trials of ADX-629, a first-in-class RASP modulator, across a variety of systemic inflammatory diseases, and we look forward to reporting results of our recently initiated clinical trial of ADX-2191 in retinitis pigmentosa in the second half of this year."

Recent Corporate Highlights

Initiated Phase 2 Clinical Trial of ADX-2191 in Retinitis Pigmentosa. Aldeyra initiated a Phase 2 clinical trial of ADX-2191 (intravitreal methotrexate 0.8%), an investigational new drug product, in retinitis pigmentosa, a rare, sight-threatening retinal disease with no approved therapy. The trial is being conducted at Duke University Medical Center.
Reported Positive Results from Phase 2 Dry Eye Chamber Clinical Trial of Reproxalap Compared to Xiidra. In a Phase 2 dry eye chamber clinical trial, ocular discomfort and ocular itching symptom scores were assessed following treatment with either reproxalap or Xiidra (lifitegrast ophthalmic solution 5%). Both ocular discomfort (p=0.002) and ocular itching (p=0.01) were statistically lower after treatment with reproxalap than with Xiidra.
Reported Results from Phase 3 TRANQUILITY Trial of Reproxalap in Dry Eye Disease. Although the primary endpoint of ocular redness was not met in the TRANQUILITY Trial, statistical significance (p=0.0001) was achieved for the dry eye disease sign of Schirmer test, a secondary endpoint. The Schirmer test has been accepted by the U.S. Food and Drug Administration as an approvable objective sign that can be used to support a New Drug Application (NDA) for dry eye disease.
Continued Enrollment in Phase 3 TRANQUILITY-2 Trial of Reproxalap. Patient enrollment continued in the Phase 3 TRANQUILITY-2 Trial of reproxalap in dry eye disease. The primary endpoint of the trial will be met if either Schirmer test or ocular redness achieves statistical significance in favor of reproxalap over vehicle.
Completed Enrollment in Part 1 of Phase 3 GUARD Trial of ADX-2191 in Proliferative Vitreoretinopathy. Patient enrollment concluded in Part 1 of the Phase 3 GUARD Trial of ADX-2191 in patients with proliferative vitreoretinopathy, a rare, sight-threatening retinal disease with no approved therapy.
Initiated Enrollment in Phase 3 INVIGORATE-2 Trial of Reproxalap in Allergic Conjunctivitis. Patient enrollment began in the Phase 3 INVIGORATE-2 Trial of reproxalap in allergic conjunctivitis. The protocol of INVIGORATE-2 is substantially identical to that of the Phase 3 INVIGORATE Trial, which, relative to vehicle, demonstrated statistically significant reductions in patient-reported ocular itching (p<0.0001) and investigator-assessed ocular redness (p<0.0001) following treatment with reproxalap in an allergen chamber. Results from INVIGORATE-2 are expected in 2023.
Announced the Publication of Phase 2 Clinical Trial of Reproxalap in Allergen Chamber Model. The peer-reviewed journal Clinical Ophthalmology published results from the randomized, double-masked, vehicle-controlled, crossover Phase 2 clinical trial of reproxalap versus vehicle in an allergen chamber model. Relative to vehicle, reproxalap treatment statistically reduced patient-reported ocular itching (p<0.0001), patient-reported ocular tearing (p<0.0001), and investigator-assessed ocular redness (p<0.0001).
Upcoming Planned Clinical and Regulatory Milestones

Systemic Disease: Top-line data from the Phase 2 proof-of-concept trials of ADX-629 in psoriasis, asthma, and COVID-19 are expected by the end of March 2022.
Dry Eye Disease: Results from the Phase 3 TRANQUILITY-2 Trial of reproxalap in dry eye disease are expected mid-2022, followed by NDA submission, pending the outcome of TRANQUILITY-2 and enrollment in the 12-month safety trial of reproxalap in dry eye disease patients.
Retinal Disease: Results from Part 1 of the Phase 3 GUARD Trial of ADX-2191 in proliferative vitreoretinopathy, and from the Phase 2 clinical trial of ADX-2191 in retinitis pigmentosa, are expected in the second half of 2022.
Full-Year 2021 Financial Results

Cash and cash equivalents as of December 31, 2021 were $229.8 million. Based on its current operating plan, Aldeyra believes that existing cash and cash equivalents will be sufficient to fund currently projected operating expenses through the end of 2023, including potential NDA submissions; initial commercialization of reproxalap, if approved; and continued development of Aldeyra’s product candidates in ocular and systemic immune-mediated diseases.

Net loss for the year ended December 31, 2021 was $57.8 million, or $1.07 per share, compared with a net loss of $37.6 million, or $1.11 per share, for the comparable period of 2020. Losses have resulted from the costs of clinical trials and research and development programs, as well as from general and administrative expenses.

Research and development expenses for the year ended December 31, 2021 were $44.9 million, compared with $24.7 million for the same period in 2020. The increase of $20.2 million is primarily related to increases in clinical research and development expenditures.

General and administrative expenses for the year ended December 31, 2021 were $11.3 million, compared with $10.0 million for the same period in 2020. The increase of $1.3 million is primarily due to increases in legal, insurance, and consulting costs.

Total operating expenses for the year ended December 31, 2021 were $56.2 million, compared with total operating expenses of $36.4 million for the same period in 2020.

Conference Call & Webcast Information

Aldeyra will host a conference call at 8:00 a.m. ET today to discuss recent corporate highlights and financial results for the year ended December 31, 2021. The dial-in numbers are (844) 200-6205 for domestic callers and (929) 526-1599 for international callers. The access code is 132077. Due to expected high demand, please dial in at least 15 minutes prior to the start time.

A live webcast of the conference call can be accessed via the Investors & Media page of the Aldeyra website at View Source After the live webcast, the event will remain archived on the website for 90 days.

Merck’s KEYTRUDA® (pembrolizumab) Significantly Improved Disease-Free Survival (DFS) Versus Placebo as Adjuvant Therapy in Patients With Stage IB-IIIA Non-Small Cell Lung Cancer (NSCLC) Regardless of PD-L1 Expression

On March 17, 2022 Merck (NYSE: MRK), known as MSD outside the United States and Canada, the European Organisation for Research and Treatment of Cancer (EORTC) and the European Thoracic Oncology Platform (ETOP) reported results from the pivotal Phase 3 KEYNOTE-091 trial, also known as EORTC-1416-LCG/ETOP-8-15 – PEARLS (Press release, Merck & Co, MAR 17, 2022, View Source [SID1234610266]). The study found that adjuvant treatment with KEYTRUDA significantly improved disease-free survival (DFS), one of the dual primary endpoints, reducing the risk of disease recurrence or death by 24% compared to placebo (hazard ratio [HR]=0.76 [95% CI, 0.63-0.91]; p=0.0014) in patients with stage IB (≥4 centimeters) to IIIA non-small cell lung cancer (NSCLC) following surgical resection regardless of PD-L1 expression. Median DFS was 53.6 months for KEYTRUDA versus 42.0 months for placebo, an improvement of nearly one year. These data are being presented today during a European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) Virtual Plenary and will be shared with regulatory authorities worldwide.

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"These are the first positive results for KEYTRUDA in the adjuvant setting for non-small cell lung cancer, and represent the sixth positive pivotal study evaluating a KEYTRUDA-based regimen in earlier stages of cancer," said Dr. Roy Baynes, senior vice president and head of global clinical development, chief medical officer, Merck Research Laboratories. "KEYTRUDA has become foundational in the treatment of metastatic non-small cell lung cancer, and we are pleased to present these data showing the potential of KEYTRUDA to help more patients with lung cancer in earlier stages of disease. We thank the patients, their caregivers and investigators for participating in this study."

As previously announced, there was also an improvement in DFS for patients whose tumors express PD-L1 (tumor proportion score [TPS] ≥50%) treated with KEYTRUDA compared to placebo, the other dual primary endpoint; these results did not reach statistical significance per the pre-specified statistical plan (HR=0.82 [95% CI, 0.57-1.18]; p=0.14). Among these patients, median DFS was not reached in either arm. Additionally, a favorable trend in overall survival (OS), a key secondary endpoint, was observed for KEYTRUDA versus placebo regardless of PD-L1 expression (HR=0.87 [95% CI, 0.67-1.15]; p=0.17); these OS data are not mature and did not reach statistical significance at the time of this interim analysis. The trial will continue to evaluate DFS in patients whose tumors express high levels of PD-L1 (TPS ≥50%) and OS. The safety profile of KEYTRUDA in this study was consistent with that observed in previously reported studies.

"Lung cancer is most treatable at earlier stages, and adding treatment after surgery may help reduce the risk of recurrence," said Professor Mary O’Brien, consultant medical oncologist and head of the Lung Unit at The Royal Marsden NHS Foundation Trust and professor of practice (medical oncology) at Imperial College London, as well as co-principal investigator. "We are encouraged by these new Phase 3 data, as they represent the first time adjuvant immunotherapy has demonstrated a statistically significant and clinically meaningful improvement in disease-free survival for patients with stage IB-IIIA non-small cell lung cancer."

"While significant advancements have been made in the treatment of metastatic non-small cell lung cancer, there remains an unmet need for patients with earlier stages of this disease, as up to 43% of them will experience disease recurrence following surgery," said Dr. Luis Paz-Ares, chair of the medical oncology department, Hospital Universitario Doce de Octubre, Madrid, Spain and co-principal investigator. "The positive disease-free survival data observed in this study with the use of KEYTRUDA in the adjuvant setting has the potential to have important implications for how we treat patients with stage IB-IIIA non-small cell lung cancer."

In addition to KEYNOTE-091, five other pivotal trials evaluating a KEYTRUDA-based regimen in patients with earlier stages of cancer met their primary endpoint(s). These trials included: KEYNOTE-716 in stage IIB and IIC melanoma; KEYNOTE-054 in stage III melanoma; KEYNOTE-564 in renal cell carcinoma; KEYNOTE-522 in triple-negative breast cancer; and KEYNOTE-057 in Bacillus Calmette-Guerin (BCG)-unresponsive, high-risk, non-muscle invasive bladder cancer.

Merck has an extensive clinical development program in lung cancer and is advancing multiple registration-enabling studies, with research directed at earlier stages of disease and novel combinations. Key studies in earlier stages of NSCLC include KEYNOTE-091, KEYNOTE-671, KEYNOTE-867 and KEYLYNK-012.

Study Design and Additional Data From KEYNOTE-091

KEYNOTE-091, also known as EORTC-1416-LCG/ETOP-8-15 – PEARLS, is a randomized, Phase 3 trial (ClinicalTrials.gov, NCT02504372) sponsored by Merck and conducted in collaboration with EORTC and ETOP evaluating KEYTRUDA compared to placebo for the adjuvant treatment of patients with stage IB (≥4 centimeters) to IIIA NSCLC following surgical resection (lobectomy or pneumonectomy) and with adjuvant chemotherapy when indicated. The dual primary endpoints are DFS in the overall population and in patients whose tumors express PD-L1 (TPS ≥50%). Disease-free survival is calculated as the time from randomization to the date of disease recurrence, occurrence of second primary lung cancer, occurrence of second malignancy, or death from any cause, whichever occurs first. The secondary endpoints include OS and lung cancer-specific survival (the time from randomization to date of death due to lung cancer specifically). The study randomized 1,177 patients (1:1) to receive either KEYTRUDA (200 mg intravenously [IV] every three weeks [Q3W] for one year or maximum 18 doses; n=590); or placebo (IV Q3W for one year or maximum 18 doses; n=587). The median number of doses was 17 for KEYTRUDA and 18 for placebo. As of data cut-off for this interim analysis (September 20, 2021), median time from randomization to data cut-off was 35.6 months (range, 16.5-68.0 months).

Grade ≥3 adverse events occurred in 34.1% of patients receiving KEYTRUDA and 25.8% of patients receiving placebo. Adverse events resulting in discontinuation of any treatment occurred in 19.8% of patients receiving KEYTRUDA and 5.9% of patients receiving placebo; there were four treatment-related deaths in the KEYTRUDA arm and no treatment-related deaths in the placebo arm.

About EORTC

The European Organisation for Research and Treatment of Cancer (EORTC) is a non-governmental, non-profit organisation, which unites clinical cancer research experts, throughout Europe, to define better treatments for cancer patients to prolong survival and improve quality of life. Spanning from translational to large, prospective, multi-centre, phase III clinical trials that evaluate new therapies and treatment strategies as well as patient quality of life, its activities are coordinated from EORTC Headquarters, a unique international clinical research infrastructure, based in Brussels, Belgium.

For further information, please visit the EORTC website: www.eortc.org.

About ETOP

The European Thoracic Oncology Platform (ETOP) is a foundation promoting exchange and research in the field of thoracic malignancies in Europe. It is a not-for-profit organization, domiciled in Bern, Switzerland. Since 2009 ETOP been able to bring together international leaders in field of thoracic malignancies from all disciplines and has continuously enlarged its clinical trial and translational research activity in collaboration with many groups and institutions from 20 countries from Europe and beyond.

For further information, please visit the ETOP website: www.etop-eu.org.

About Lung Cancer

Lung cancer is the leading cause of cancer death worldwide. In 2020 alone, there were more than 2.2 million new cases and 1.8 million deaths from lung cancer globally. Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for about 82% of all cases. In the U.S., the overall five-year survival rate for patients diagnosed with lung cancer is 24%, a 14% improvement over the last five years. Improving survival rates are due in part to earlier detection and screening, reduction in smoking, advances in diagnostic and surgical procedures as well as the introduction of new therapies.

About Merck’s Research in Lung Cancer

Merck is advancing research aimed at transforming the way lung cancer is treated, with a goal of improving outcomes for patients affected by this deadly disease. Through nearly 200 clinical trials evaluating more than 36,000 patients around the world, Merck is at the forefront of lung cancer research. In advanced NSCLC, KEYTRUDA has four approved U.S. indications (see indications below), and is approved in advanced NSCLC in more than 95 countries. Among Merck’s research efforts are trials focused on evaluating KEYTRUDA in earlier stages of lung cancer as well as identifying new combinations and coformulations with KEYTRUDA.

About Merck’s Early-Stage Cancer Clinical Program

Finding cancer at an earlier stage may give patients a greater chance of long-term survival. Many cancers are considered most treatable and potentially curable in their earliest stage of disease. Building on the strong understanding of the role of KEYTRUDA in later-stage cancers, Merck is studying KEYTRUDA in earlier disease states, with approximately 20 ongoing registrational studies across multiple types of cancer.

About KEYTRUDA (pembrolizumab) Injection, 100 mg

KEYTRUDA is an anti-programmed death receptor-1 (PD-1) therapy that works by increasing the ability of the body’s immune system to help detect and fight tumor cells. KEYTRUDA is a humanized monoclonal antibody that blocks the interaction between PD-1 and its ligands, PD-L1 and PD-L2, thereby activating T lymphocytes which may affect both tumor cells and healthy cells.

Merck has the industry’s largest immuno-oncology clinical research program. There are currently more than 1,700 trials studying KEYTRUDA across a wide variety of cancers and treatment settings. The KEYTRUDA clinical program seeks to understand the role of KEYTRUDA across cancers and the factors that may predict a patient’s likelihood of benefitting from treatment with KEYTRUDA, including exploring several different biomarkers.

Selected Indications for KEYTRUDA (pembrolizumab) in the U.S.

Non-Small Cell Lung Cancer

KEYTRUDA, in combination with pemetrexed and platinum chemotherapy, is indicated for the first-line treatment of patients with metastatic nonsquamous non-small cell lung cancer (NSCLC), with no EGFR or ALK genomic tumor aberrations.

KEYTRUDA, in combination with carboplatin and either paclitaxel or paclitaxel protein-bound, is indicated for the first-line treatment of patients with metastatic squamous NSCLC.

KEYTRUDA, as a single agent, is indicated for the first-line treatment of patients with NSCLC expressing PD-L1 [tumor proportion score (TPS) ≥1%] as determined by an FDA-approved test, with no EGFR or ALK genomic tumor aberrations, and is:

stage III where patients are not candidates for surgical resection or definitive chemoradiation, or
metastatic.
KEYTRUDA, as a single agent, is indicated for the treatment of patients with metastatic NSCLC whose tumors express PD-L1 (TPS ≥1%) as determined by an FDA-approved test, with disease progression on or after platinum-containing chemotherapy. Patients with EGFR or ALK genomic tumor aberrations should have disease progression on FDA-approved therapy for these aberrations prior to receiving KEYTRUDA.

See additional selected indications for KEYTRUDA in the U.S. after the Selected Important Safety Information

Selected Important Safety Information for KEYTRUDA

Severe and Fatal Immune-Mediated Adverse Reactions

KEYTRUDA is a monoclonal antibody that belongs to a class of drugs that bind to either the PD-1 or the PD-L1, blocking the PD-1/PD-L1 pathway, thereby removing inhibition of the immune response, potentially breaking peripheral tolerance and inducing immune-mediated adverse reactions. Immune-mediated adverse reactions, which may be severe or fatal, can occur in any organ system or tissue, can affect more than one body system simultaneously, and can occur at any time after starting treatment or after discontinuation of treatment. Important immune-mediated adverse reactions listed here may not include all possible severe and fatal immune-mediated adverse reactions.

Monitor patients closely for symptoms and signs that may be clinical manifestations of underlying immune-mediated adverse reactions. Early identification and management are essential to ensure safe use of anti–PD-1/PD-L1 treatments. Evaluate liver enzymes, creatinine, and thyroid function at baseline and periodically during treatment. For patients with TNBC treated with KEYTRUDA in the neoadjuvant setting, monitor blood cortisol at baseline, prior to surgery, and as clinically indicated. In cases of suspected immune-mediated adverse reactions, initiate appropriate workup to exclude alternative etiologies, including infection. Institute medical management promptly, including specialty consultation as appropriate.

Withhold or permanently discontinue KEYTRUDA depending on severity of the immune-mediated adverse reaction. In general, if KEYTRUDA requires interruption or discontinuation, administer systemic corticosteroid therapy (1 to 2 mg/kg/day prednisone or equivalent) until improvement to Grade 1 or less. Upon improvement to Grade 1 or less, initiate corticosteroid taper and continue to taper over at least 1 month. Consider administration of other systemic immunosuppressants in patients whose adverse reactions are not controlled with corticosteroid therapy.

Immune-Mediated Pneumonitis

KEYTRUDA can cause immune-mediated pneumonitis. The incidence is higher in patients who have received prior thoracic radiation. Immune-mediated pneumonitis occurred in 3.4% (94/2799) of patients receiving KEYTRUDA, including fatal (0.1%), Grade 4 (0.3%), Grade 3 (0.9%), and Grade 2 (1.3%) reactions. Systemic corticosteroids were required in 67% (63/94) of patients. Pneumonitis led to permanent discontinuation of KEYTRUDA in 1.3% (36) and withholding in 0.9% (26) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement; of these, 23% had recurrence. Pneumonitis resolved in 59% of the 94 patients.

Pneumonitis occurred in 8% (31/389) of adult patients with cHL receiving KEYTRUDA as a single agent, including Grades 3-4 in 2.3% of patients. Patients received high-dose corticosteroids for a median duration of 10 days (range: 2 days to 53 months). Pneumonitis rates were similar in patients with and without prior thoracic radiation. Pneumonitis led to discontinuation of KEYTRUDA in 5.4% (21) of patients. Of the patients who developed pneumonitis, 42% interrupted KEYTRUDA, 68% discontinued KEYTRUDA, and 77% had resolution.

Immune-Mediated Colitis

KEYTRUDA can cause immune-mediated colitis, which may present with diarrhea. Cytomegalovirus infection/reactivation has been reported in patients with corticosteroid-refractory immune-mediated colitis. In cases of corticosteroid-refractory colitis, consider repeating infectious workup to exclude alternative etiologies. Immune-mediated colitis occurred in 1.7% (48/2799) of patients receiving KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (1.1%), and Grade 2 (0.4%) reactions. Systemic corticosteroids were required in 69% (33/48); additional immunosuppressant therapy was required in 4.2% of patients. Colitis led to permanent discontinuation of KEYTRUDA in 0.5% (15) and withholding in 0.5% (13) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement; of these, 23% had recurrence. Colitis resolved in 85% of the 48 patients.

Hepatotoxicity and Immune-Mediated Hepatitis

KEYTRUDA as a Single Agent

KEYTRUDA can cause immune-mediated hepatitis. Immune-mediated hepatitis occurred in 0.7% (19/2799) of patients receiving KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (0.4%), and Grade 2 (0.1%) reactions. Systemic corticosteroids were required in 68% (13/19) of patients; additional immunosuppressant therapy was required in 11% of patients. Hepatitis led to permanent discontinuation of KEYTRUDA in 0.2% (6) and withholding in 0.3% (9) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement; of these, none had recurrence. Hepatitis resolved in 79% of the 19 patients.

KEYTRUDA With Axitinib

First-line treatment of advanced RCC in combination therapy with axitinib (KEYNOTE-426)

KEYTRUDA in combination with axitinib can cause hepatic toxicity. Monitor liver enzymes before initiation of and periodically throughout treatment. Consider monitoring more frequently as compared to when the drugs are administered as single agents. For elevated liver enzymes, interrupt KEYTRUDA and axitinib, and consider administering corticosteroids as needed. With the combination of KEYTRUDA and axitinib, Grades 3 and 4 increased alanine aminotransferase (ALT) (20%) and increased aspartate aminotransferase (AST) (13%) were seen at a higher frequency compared to KEYTRUDA alone. Fifty-nine percent of the patients with increased ALT received systemic corticosteroids. In patients with ALT ≥3 times upper limit of normal (ULN) (Grades 2-4, n=116), ALT resolved to Grades 0-1 in 94%. Among the 92 patients who were rechallenged with either KEYTRUDA (n=3) or axitinib (n=34) administered as a single agent or with both (n=55), recurrence of ALT ≥3 times ULN was observed in 1 patient receiving KEYTRUDA, 16 patients receiving axitinib, and 24 patients receiving both. All patients with a recurrence of ALT ≥3 ULN subsequently recovered from the event.

Immune-Mediated Endocrinopathies

Adrenal Insufficiency

KEYTRUDA can cause primary or secondary adrenal insufficiency. For Grade 2 or higher, initiate symptomatic treatment, including hormone replacement as clinically indicated. Withhold KEYTRUDA depending on severity. Adrenal insufficiency occurred in 0.8% (22/2799) of patients receiving KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (0.3%), and Grade 2 (0.3%) reactions. Systemic corticosteroids were required in 77% (17/22) of patients; of these, the majority remained on systemic corticosteroids. Adrenal insufficiency led to permanent discontinuation of KEYTRUDA in <0.1% (1) and withholding in 0.3% (8) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement.

Hypophysitis

KEYTRUDA can cause immune-mediated hypophysitis. Hypophysitis can present with acute symptoms associated with mass effect such as headache, photophobia, or visual field defects. Hypophysitis can cause hypopituitarism. Initiate hormone replacement as indicated. Withhold or permanently discontinue KEYTRUDA depending on severity. Hypophysitis occurred in 0.6% (17/2799) of patients receiving KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (0.3%), and Grade 2 (0.2%) reactions. Systemic corticosteroids were required in 94% (16/17) of patients; of these, the majority remained on systemic corticosteroids. Hypophysitis led to permanent discontinuation of KEYTRUDA in 0.1% (4) and withholding in 0.3% (7) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement.

Thyroid Disorders

KEYTRUDA can cause immune-mediated thyroid disorders. Thyroiditis can present with or without endocrinopathy. Hypothyroidism can follow hyperthyroidism. Initiate hormone replacement for hypothyroidism or institute medical management of hyperthyroidism as clinically indicated. Withhold or permanently discontinue KEYTRUDA depending on severity. Thyroiditis occurred in 0.6% (16/2799) of patients receiving KEYTRUDA, including Grade 2 (0.3%). None discontinued, but KEYTRUDA was withheld in <0.1% (1) of patients.

Hyperthyroidism occurred in 3.4% (96/2799) of patients receiving KEYTRUDA, including Grade 3 (0.1%) and Grade 2 (0.8%). It led to permanent discontinuation of KEYTRUDA in <0.1% (2) and withholding in 0.3% (7) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement. Hypothyroidism occurred in 8% (237/2799) of patients receiving KEYTRUDA, including Grade 3 (0.1%) and Grade 2 (6.2%). It led to permanent discontinuation of KEYTRUDA in <0.1% (1) and withholding in 0.5% (14) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement. The majority of patients with hypothyroidism required long-term thyroid hormone replacement. The incidence of new or worsening hypothyroidism was higher in 1185 patients with HNSCC, occurring in 16% of patients receiving KEYTRUDA as a single agent or in combination with platinum and FU, including Grade 3 (0.3%) hypothyroidism. The incidence of new or worsening hypothyroidism was higher in 389 adult patients with cHL (17%) receiving KEYTRUDA as a single agent, including Grade 1 (6.2%) and Grade 2 (10.8%) hypothyroidism.

Type 1 Diabetes Mellitus (DM), Which Can Present With Diabetic Ketoacidosis

Monitor patients for hyperglycemia or other signs and symptoms of diabetes. Initiate treatment with insulin as clinically indicated. Withhold KEYTRUDA depending on severity. Type 1 DM occurred in 0.2% (6/2799) of patients receiving KEYTRUDA. It led to permanent discontinuation in <0.1% (1) and withholding of KEYTRUDA in <0.1% (1) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement.

Immune-Mediated Nephritis With Renal Dysfunction

KEYTRUDA can cause immune-mediated nephritis. Immune-mediated nephritis occurred in 0.3% (9/2799) of patients receiving KEYTRUDA, including Grade 4 (<0.1%), Grade 3 (0.1%), and Grade 2 (0.1%) reactions. Systemic corticosteroids were required in 89% (8/9) of patients. Nephritis led to permanent discontinuation of KEYTRUDA in 0.1% (3) and withholding in 0.1% (3) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement; of these, none had recurrence. Nephritis resolved in 56% of the 9 patients.

Immune-Mediated Dermatologic Adverse Reactions

KEYTRUDA can cause immune-mediated rash or dermatitis. Exfoliative dermatitis, including Stevens-Johnson syndrome, drug rash with eosinophilia and systemic symptoms, and toxic epidermal necrolysis, has occurred with anti–PD-1/PD-L1 treatments. Topical emollients and/or topical corticosteroids may be adequate to treat mild to moderate nonexfoliative rashes. Withhold or permanently discontinue KEYTRUDA depending on severity. Immune-mediated dermatologic adverse reactions occurred in 1.4% (38/2799) of patients receiving KEYTRUDA, including Grade 3 (1%) and Grade 2 (0.1%) reactions. Systemic corticosteroids were required in 40% (15/38) of patients. These reactions led to permanent discontinuation in 0.1% (2) and withholding of KEYTRUDA in 0.6% (16) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement; of these, 6% had recurrence. The reactions resolved in 79% of the 38 patients.

Other Immune-Mediated Adverse Reactions

The following clinically significant immune-mediated adverse reactions occurred at an incidence of <1% (unless otherwise noted) in patients who received KEYTRUDA or were reported with the use of other anti–PD-1/PD-L1 treatments. Severe or fatal cases have been reported for some of these adverse reactions. Cardiac/Vascular: Myocarditis, pericarditis, vasculitis; Nervous System: Meningitis, encephalitis, myelitis and demyelination, myasthenic syndrome/myasthenia gravis (including exacerbation), Guillain-Barré syndrome, nerve paresis, autoimmune neuropathy; Ocular: Uveitis, iritis and other ocular inflammatory toxicities can occur. Some cases can be associated with retinal detachment. Various grades of visual impairment, including blindness, can occur. If uveitis occurs in combination with other immune-mediated adverse reactions, consider a Vogt-Koyanagi-Harada-like syndrome, as this may require treatment with systemic steroids to reduce the risk of permanent vision loss; Gastrointestinal: Pancreatitis, to include increases in serum amylase and lipase levels, gastritis, duodenitis; Musculoskeletal and Connective Tissue: Myositis/polymyositis, rhabdomyolysis (and associated sequelae, including renal failure), arthritis (1.5%), polymyalgia rheumatica; Endocrine: Hypoparathyroidism; Hematologic/Immune: Hemolytic anemia, aplastic anemia, hemophagocytic lymphohistiocytosis, systemic inflammatory response syndrome, histiocytic necrotizing lymphadenitis (Kikuchi lymphadenitis), sarcoidosis, immune thrombocytopenic purpura, solid organ transplant rejection.

Infusion-Related Reactions

KEYTRUDA can cause severe or life-threatening infusion-related reactions, including hypersensitivity and anaphylaxis, which have been reported in 0.2% of 2799 patients receiving KEYTRUDA. Monitor for signs and symptoms of infusion-related reactions. Interrupt or slow the rate of infusion for Grade 1 or Grade 2 reactions. For Grade 3 or Grade 4 reactions, stop infusion and permanently discontinue KEYTRUDA.

Complications of Allogeneic Hematopoietic Stem Cell Transplantation (HSCT)

Fatal and other serious complications can occur in patients who receive allogeneic HSCT before or after anti–PD-1/PD-L1 treatments. Transplant-related complications include hyperacute graft-versus-host disease (GVHD), acute and chronic GVHD, hepatic veno-occlusive disease after reduced intensity conditioning, and steroid-requiring febrile syndrome (without an identified infectious cause). These complications may occur despite intervening therapy between anti–PD-1/PD-L1 treatment and allogeneic HSCT. Follow patients closely for evidence of these complications and intervene promptly. Consider the benefit vs risks of using anti–PD-1/PD-L1 treatments prior to or after an allogeneic HSCT.

Increased Mortality in Patients With Multiple Myeloma

In trials in patients with multiple myeloma, the addition of KEYTRUDA to a thalidomide analogue plus dexamethasone resulted in increased mortality. Treatment of these patients with an anti–PD-1/PD-L1 treatment in this combination is not recommended outside of controlled trials.

Embryofetal Toxicity

Based on its mechanism of action, KEYTRUDA can cause fetal harm when administered to a pregnant woman. Advise women of this potential risk. In females of reproductive potential, verify pregnancy status prior to initiating KEYTRUDA and advise them to use effective contraception during treatment and for 4 months after the last dose.

Adverse Reactions

In KEYNOTE-006, KEYTRUDA was discontinued due to adverse reactions in 9% of 555 patients with advanced melanoma; adverse reactions leading to permanent discontinuation in more than one patient were colitis (1.4%), autoimmune hepatitis (0.7%), allergic reaction (0.4%), polyneuropathy (0.4%), and cardiac failure (0.4%). The most common adverse reactions (≥20%) with KEYTRUDA were fatigue (28%), diarrhea (26%), rash (24%), and nausea (21%).

In KEYNOTE-054, when KEYTRUDA was administered as a single agent to patients with stage III melanoma, KEYTRUDA was permanently discontinued due to adverse reactions in 14% of 509 patients; the most common (≥1%) were pneumonitis (1.4%), colitis (1.2%), and diarrhea (1%). Serious adverse reactions occurred in 25% of patients receiving KEYTRUDA. The most common adverse reaction (≥20%) with KEYTRUDA was diarrhea (28%). In KEYNOTE-716, when KEYTRUDA was administered as a single agent to patients with stage IIB or IIC melanoma, adverse reactions occurring in patients with stage IIB or IIC melanoma were similar to those occurring in 1011 patients with stage III melanoma from KEYNOTE-054.

In KEYNOTE-189, when KEYTRUDA was administered with pemetrexed and platinum chemotherapy in metastatic nonsquamous NSCLC, KEYTRUDA was discontinued due to adverse reactions in 20% of 405 patients. The most common adverse reactions resulting in permanent discontinuation of KEYTRUDA were pneumonitis (3%) and acute kidney injury (2%). The most common adverse reactions (≥20%) with KEYTRUDA were nausea (56%), fatigue (56%), constipation (35%), diarrhea (31%), decreased appetite (28%), rash (25%), vomiting (24%), cough (21%), dyspnea (21%), and pyrexia (20%).

In KEYNOTE-407, when KEYTRUDA was administered with carboplatin and either paclitaxel or paclitaxel protein-bound in metastatic squamous NSCLC, KEYTRUDA was discontinued due to adverse reactions in 15% of 101 patients. The most frequent serious adverse reactions reported in at least 2% of patients were febrile neutropenia, pneumonia, and urinary tract infection. Adverse reactions observed in KEYNOTE-407 were similar to those observed in KEYNOTE-189 with the exception that increased incidences of alopecia (47% vs 36%) and peripheral neuropathy (31% vs 25%) were observed in the KEYTRUDA and chemotherapy arm compared to the placebo and chemotherapy arm in KEYNOTE-407.

In KEYNOTE-042, KEYTRUDA was discontinued due to adverse reactions in 19% of 636 patients with advanced NSCLC; the most common were pneumonitis (3%), death due to unknown cause (1.6%), and pneumonia (1.4%). The most frequent serious adverse reactions reported in at least 2% of patients were pneumonia (7%), pneumonitis (3.9%), pulmonary embolism (2.4%), and pleural effusion (2.2%). The most common adverse reaction (≥20%) was fatigue (25%).

In KEYNOTE-010, KEYTRUDA monotherapy was discontinued due to adverse reactions in 8% of 682 patients with metastatic NSCLC; the most common was pneumonitis (1.8%). The most common adverse reactions (≥20%) were decreased appetite (25%), fatigue (25%), dyspnea (23%), and nausea (20%).

In KEYNOTE-048, KEYTRUDA monotherapy was discontinued due to adverse events in 12% of 300 patients with HNSCC; the most common adverse reactions leading to permanent discontinuation were sepsis (1.7%) and pneumonia (1.3%). The most common adverse reactions (≥20%) were fatigue (33%), constipation (20%), and rash (20%).

In KEYNOTE-048, when KEYTRUDA was administered in combination with platinum (cisplatin or carboplatin) and FU chemotherapy, KEYTRUDA was discontinued due to adverse reactions in 16% of 276 patients with HNSCC. The most common adverse reactions resulting in permanent discontinuation of KEYTRUDA were pneumonia (2.5%), pneumonitis (1.8%), and septic shock (1.4%). The most common adverse reactions (≥20%) were nausea (51%), fatigue (49%), constipation (37%), vomiting (32%), mucosal inflammation (31%), diarrhea (29%), decreased appetite (29%), stomatitis (26%), and cough (22%).

In KEYNOTE-012, KEYTRUDA was discontinued due to adverse reactions in 17% of 192 patients with HNSCC. Serious adverse reactions occurred in 45% of patients. The most frequent serious adverse reactions reported in at least 2% of patients were pneumonia, dyspnea, confusional state, vomiting, pleural effusion, and respiratory failure. The most common adverse reactions (≥20%) were fatigue, decreased appetite, and dyspnea. Adverse reactions occurring in patients with HNSCC were generally similar to those occurring in patients with melanoma or NSCLC who received KEYTRUDA as a monotherapy, with the exception of increased incidences of facial edema and new or worsening hypothyroidism.

In KEYNOTE-204, KEYTRUDA was discontinued due to adverse reactions in 14% of 148 patients with cHL. Serious adverse reactions occurred in 30% of patients receiving KEYTRUDA; those ≥1% were pneumonitis, pneumonia, pyrexia, myocarditis, acute kidney injury, febrile neutropenia, and sepsis. Three patients died from causes other than disease progression: 2 from complications after allogeneic HSCT and 1 from unknown cause. The most common adverse reactions (≥20%) were upper respiratory tract infection (41%), musculoskeletal pain (32%), diarrhea (22%), and pyrexia, fatigue, rash, and cough (20% each).

In KEYNOTE-087, KEYTRUDA was discontinued due to adverse reactions in 5% of 210 patients with cHL. Serious adverse reactions occurred in 16% of patients; those ≥1% were pneumonia, pneumonitis, pyrexia, dyspnea, GVHD, and herpes zoster. Two patients died from causes other than disease progression: 1 from GVHD after subsequent allogeneic HSCT and 1 from septic shock. The most common adverse reactions (≥20%) were fatigue (26%), pyrexia (24%), cough (24%), musculoskeletal pain (21%), diarrhea (20%), and rash (20%).

In KEYNOTE-170, KEYTRUDA was discontinued due to adverse reactions in 8% of 53 patients with PMBCL. Serious adverse reactions occurred in 26% of patients and included arrhythmia (4%), cardiac tamponade (2%), myocardial infarction (2%), pericardial effusion (2%), and pericarditis (2%). Six (11%) patients died within 30 days of start of treatment. The most common adverse reactions (≥20%) were musculoskeletal pain (30%), upper respiratory tract infection and pyrexia (28% each), cough (26%), fatigue (23%), and dyspnea (21%).

In KEYNOTE-052, KEYTRUDA was discontinued due to adverse reactions in 11% of 370 patients with locally advanced or mUC. Serious adverse reactions occurred in 42% of patients; those ≥2% were urinary tract infection, hematuria, acute kidney injury, pneumonia, and urosepsis. The most common adverse reactions (≥20%) were fatigue (38%), musculoskeletal pain (24%), decreased appetite (22%), constipation (21%), rash (21%), and diarrhea (20%).

In KEYNOTE-045, KEYTRUDA was discontinued due to adverse reactions in 8% of 266 patients with locally advanced or mUC. The most common adverse reaction resulting in permanent discontinuation of KEYTRUDA was pneumonitis (1.9%). Serious adverse reactions occurred in 39% of KEYTRUDA-treated patients; those ≥2% were urinary tract infection, pneumonia, anemia, and pneumonitis. The most common adverse reactions (≥20%) in patients who received KEYTRUDA were fatigue (38%), musculoskeletal pain (32%), pruritus (23%), decreased appetite (21%), nausea (21%), and rash (20%).

In KEYNOTE-057, KEYTRUDA was discontinued due to adverse reactions in 11% of 148 patients with high-risk NMIBC. The most common adverse reaction resulting in permanent discontinuation of KEYTRUDA was pneumonitis (1.4%). Serious adverse reactions occurred in 28% of patients; those ≥2% were pneumonia (3%), cardiac ischemia (2%), colitis (2%), pulmonary embolism (2%), sepsis (2%), and urinary tract infection (2%). The most common adverse reactions (≥20%) were fatigue (29%), diarrhea (24%), and rash (24%).

Adverse reactions occurring in patients with MSI-H or dMMR CRC were similar to those occurring in patients with melanoma or NSCLC who received KEYTRUDA as a monotherapy.

In KEYNOTE-811, when KEYTRUDA was administered in combination with trastuzumab, fluoropyrimidine- and platinum-containing chemotherapy, KEYTRUDA was discontinued due to adverse reactions in 6% of 217 patients with locally advanced unresectable or metastatic HER2+ gastric or GEJ adenocarcinoma. The most common adverse reaction resulting in permanent discontinuation was pneumonitis (1.4%). In the KEYTRUDA arm versus placebo, there was a difference of ≥5% incidence between patients treated with KEYTRUDA versus standard of care for diarrhea (53% vs 44%) and nausea (49% vs 44%).

The most common adverse reactions (reported in ≥20%) in patients receiving KEYTRUDA in combination with chemotherapy were fatigue/asthenia, nausea, constipation, diarrhea, decreased appetite, rash, vomiting, cough, dyspnea, pyrexia, alopecia, peripheral neuropathy, mucosal inflammation, stomatitis, headache, weight loss, abdominal pain, arthralgia, myalgia, and insomnia.

In KEYNOTE-590, when KEYTRUDA was administered with cisplatin and fluorouracil to patients with metastatic or locally advanced esophageal or GEJ (tumors with epicenter 1 to 5 centimeters above the GEJ) carcinoma who were not candidates for surgical resection or definitive chemoradiation, KEYTRUDA was discontinued due to adverse reactions in 15% of 370 patients. The most common adverse reactions resulting in permanent discontinuation of KEYTRUDA (≥1%) were pneumonitis (1.6%), acute kidney injury (1.1%), and pneumonia (1.1%). The most common adverse reactions (≥20%) with KEYTRUDA in combination with chemotherapy were nausea (67%), fatigue (57%), decreased appetite (44%), constipation (40%), diarrhea (36%), vomiting (34%), stomatitis (27%), and weight loss (24%).

Adverse reactions occurring in patients with esophageal cancer who received KEYTRUDA as a monotherapy were similar to those occurring in patients with melanoma or NSCLC who received KEYTRUDA as a monotherapy.

In KEYNOTE-826, when KEYTRUDA was administered in combination with paclitaxel and cisplatin or paclitaxel and carboplatin, with or without bevacizumab (n=307), to patients with persistent, recurrent, or first-line metastatic cervical cancer regardless of tumor PD-L1 expression who had not been treated with chemotherapy except when used concurrently as a radio-sensitizing agent, fatal adverse reactions occurred in 4.6% of patients, including 3 cases of hemorrhage, 2 cases each of sepsis and due to unknown causes, and 1 case each of acute myocardial infarction, autoimmune encephalitis, cardiac arrest, cerebrovascular accident, femur fracture with perioperative pulmonary embolus, intestinal perforation, and pelvic infection. Serious adverse reactions occurred in 50% of patients receiving KEYTRUDA in combination with chemotherapy with or without bevacizumab; those ≥3% were febrile neutropenia (6.8%), urinary tract infection (5.2%), anemia (4.6%), and acute kidney injury and sepsis (3.3% each).

KEYTRUDA was discontinued in 15% of patients due to adverse reactions. The most common adverse reaction resulting in permanent discontinuation (≥1%) was colitis (1%).

For patients treated with KEYTRUDA, chemotherapy, and bevacizumab (n=196), the most common adverse reactions (≥20%) were peripheral neuropathy (62%), alopecia (58%), anemia (55%), fatigue/asthenia (53%), nausea and neutropenia (41% each), diarrhea (39%), hypertension and thrombocytopenia (35% each), constipation and arthralgia (31% each), vomiting (30%), urinary tract infection (27%), rash (26%), leukopenia (24%), hypothyroidism (22%), and decreased appetite (21%).

For patients treated with KEYTRUDA in combination with chemotherapy with or without bevacizumab, the most common adverse reactions (≥20%) were peripheral neuropathy (58%), alopecia (56%), fatigue (47%), nausea (40%), diarrhea (36%), constipation (28%), arthralgia (27%), vomiting (26%), hypertension and urinary tract infection (24% each), and rash (22%).

In KEYNOTE-158, KEYTRUDA was discontinued due to adverse reactions in 8% of 98 patients with recurrent or metastatic cervical cancer. Serious adverse reactions occurred in 39% of patients receiving KEYTRUDA; the most frequent included anemia (7%), fistula, hemorrhage, and infections [except urinary tract infections] (4.1% each). The most common adverse reactions (≥20%) were fatigue (43%), musculoskeletal pain (27%), diarrhea (23%), pain and abdominal pain (22% each), and decreased appetite (21%).

Adverse reactions occurring in patients with HCC were generally similar to those in patients with melanoma or NSCLC who received KEYTRUDA as a monotherapy, with the exception of increased incidences of ascites (8% Grades 3-4) and immune-mediated hepatitis (2.9%). Laboratory abnormalities (Grades 3-4) that occurred at a higher incidence were elevated AST (20%), ALT (9%), and hyperbilirubinemia (10%).

Among the 50 patients with MCC enrolled in study KEYNOTE-017, adverse reactions occurring in patients with MCC were generally similar to those occurring in patients with melanoma or NSCLC who received KEYTRUDA as a monotherapy. Laboratory abnormalities (Grades 3-4) that occurred at a higher incidence were elevated AST (11%) and hyperglycemia (19%).

In KEYNOTE-426, when KEYTRUDA was administered in combination with axitinib, fatal adverse reactions occurred in 3.3% of 429 patients. Serious adverse reactions occurred in 40% of patients, the most frequent (≥1%) were hepatotoxicity (7%), diarrhea (4.2%), acute kidney injury (2.3%), dehydration (1%), and pneumonitis (1%). Permanent discontinuation due to an adverse reaction occurred in 31% of patients; KEYTRUDA only (13%), axitinib only (13%), and the combination (8%); the most common were hepatotoxicity (13%), diarrhea/colitis (1.9%), acute kidney injury (1.6%), and cerebrovascular accident (1.2%). The most common adverse reactions (≥20%) were diarrhea (56%), fatigue/asthenia (52%), hypertension (48%), hepatotoxicity (39%), hypothyroidism (35%), decreased appetite (30%), palmar-plantar erythrodysesthesia (28%), nausea (28%), stomatitis/mucosal inflammation (27%), dysphonia (25%), rash (25%), cough (21%), and constipation (21%).

In KEYNOTE-564, when KEYTRUDA was administered as a single agent for the adjuvant treatment of renal cell carcinoma, serious adverse reactions occurred in 20% of patients receiving KEYTRUDA; the serious adverse reactions (≥1%) were acute kidney injury, adrenal insufficiency, pneumonia, colitis, and diabetic ketoacidosis (1% each). Fatal adverse reactions occurred in 0.2% including 1 case of pneumonia. Discontinuation of KEYTRUDA due to adverse reactions occurred in 21% of 488 patients; the most common (≥1%) were increased ALT (1.6%), colitis (1%), and adrenal insufficiency (1%). The most common adverse reactions (≥20%) were musculoskeletal pain (41%), fatigue (40%), rash (30%), diarrhea (27%), pruritus (23%), and hypothyroidism (21%).

Adverse reactions occurring in patients with TMB-H cancer were similar to those occurring in patients with other solid tumors who received KEYTRUDA as a single agent.

Adverse reactions occurring in patients with recurrent or metastatic cSCC or locally advanced cSCC were similar to those occurring in patients with melanoma or NSCLC who received KEYTRUDA as a monotherapy.

In KEYNOTE-522, when KEYTRUDA was administered with neoadjuvant chemotherapy (carboplatin and paclitaxel followed by doxorubicin or epirubicin and cyclophosphamide) followed by surgery and continued adjuvant treatment with KEYTRUDA as a single agent (n=778) to patients with newly diagnosed, previously untreated, high-risk early-stage TNBC, fatal adverse reactions occurred in 0.9% of patients, including 1 each of adrenal crisis, autoimmune encephalitis, hepatitis, pneumonia, pneumonitis, pulmonary embolism, and sepsis in association with multiple organ dysfunction syndrome and myocardial infarction. Serious adverse reactions occurred in 44% of patients receiving KEYTRUDA; those ≥2% were febrile neutropenia (15%), pyrexia (3.7%), anemia (2.6%), and neutropenia (2.2%). KEYTRUDA was discontinued in 20% of patients due to adverse reactions. The most common reactions (≥1%) resulting in permanent discontinuation were increased ALT (2.7%), increased AST (1.5%), and rash (1%). The most common adverse reactions (≥20%) in patients receiving KEYTRUDA were fatigue (70%), nausea (67%), alopecia (61%), rash (52%), constipation (42%), diarrhea and peripheral neuropathy (41% each), stomatitis (34%), vomiting (31%), headache (30%), arthralgia (29%), pyrexia (28%), cough (26%), abdominal pain (24%), decreased appetite (23%), insomnia (21%), and myalgia (20%).

In KEYNOTE-355, when KEYTRUDA and chemotherapy (paclitaxel, paclitaxel protein-bound, or gemcitabine and carboplatin) were administered to patients with locally recurrent unresectable or metastatic TNBC who had not been previously treated with chemotherapy in the metastatic setting (n=596), fatal adverse reactions occurred in 2.5% of patients, including cardio-respiratory arrest (0.7%) and septic shock (0.3%). Serious adverse reactions occurred in 30% of patients receiving KEYTRUDA in combination with chemotherapy; the serious reactions in ≥2% were pneumonia (2.9%), anemia (2.2%), and thrombocytopenia (2%). KEYTRUDA was discontinued in 11% of patients due to adverse reactions. The most common reactions resulting in permanent discontinuation (≥1%) were increased ALT (2.2%), increased AST (1.5%), and pneumonitis (1.2%). The most common adverse reactions (≥20%) in patients receiving KEYTRUDA in combination with chemotherapy were fatigue (48%), nausea (44%), alopecia (34%), diarrhea and constipation (28% each), vomiting and rash (26% each), cough (23%), decreased appetite (21%), and headache (20%).

Lactation

Because of the potential for serious adverse reactions in breastfed children, advise women not to breastfeed during treatment and for 4 months after the final dose.

Pediatric Use

In KEYNOTE-051, 161 pediatric patients (62 pediatric patients aged 6 months to younger than 12 years and 99 pediatric patients aged 12 years to 17 years) were administered KEYTRUDA 2 mg/kg every 3 weeks. The median duration of exposure was 2.1 months (range: 1 day to 24 months).

Adverse reactions that occurred at a ≥10% higher rate in pediatric patients when compared to adults were pyrexia (33%), vomiting (30%), leukopenia (30%), upper respiratory tract infection (29%), neutropenia (26%), headache (25%), and Grade 3 anemia (17%).

Additional Indications for KEYTRUDA in the U.S.

Melanoma

KEYTRUDA is indicated for the treatment of patients with unresectable or metastatic melanoma.

KEYTRUDA is indicated for the adjuvant treatment of adult and pediatric (12 years and older) patients with stage IIB, IIC, or III melanoma following complete resection.

Head and Neck Squamous Cell Cancer

KEYTRUDA, in combination with platinum and fluorouracil (FU), is indicated for the first-line treatment of patients with metastatic or with unresectable, recurrent head and neck squamous cell carcinoma (HNSCC).

KEYTRUDA, as a single agent, is indicated for the first-line treatment of patients with metastatic or with unresectable, recurrent HNSCC whose tumors express PD-L1 [combined positive score (CPS) ≥1] as determined by an FDA-approved test.

KEYTRUDA, as a single agent, is indicated for the treatment of patients with recurrent or metastatic HNSCC with disease progression on or after platinum-containing chemotherapy.

Classical Hodgkin Lymphoma

KEYTRUDA is indicated for the treatment of adult patients with relapsed or refractory classical Hodgkin lymphoma (cHL).

KEYTRUDA is indicated for the treatment of pediatric patients with refractory cHL, or cHL that has relapsed after 2 or more lines of therapy.

Primary Mediastinal Large B-Cell Lymphoma

KEYTRUDA is indicated for the treatment of adult and pediatric patients with refractory primary mediastinal large B-cell lymphoma (PMBCL), or who have relapsed after 2 or more prior lines of therapy.

KEYTRUDA is not recommended for treatment of patients with PMBCL who require urgent cytoreductive therapy.

Urothelial Carcinoma

KEYTRUDA is indicated for the treatment of patients with locally advanced or metastatic urothelial carcinoma (mUC):

who are not eligible for any platinum-containing chemotherapy, or
who have disease progression during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
Non-muscle Invasive Bladder Cancer

KEYTRUDA is indicated for the treatment of patients with Bacillus Calmette-Guerin (BCG)-unresponsive, high-risk, non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ with or without papillary tumors who are ineligible for or have elected not to undergo cystectomy.

Microsatellite Instability-High or Mismatch Repair Deficient Cancer

KEYTRUDA is indicated for the treatment of adult and pediatric patients with unresectable or metastatic microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) solid tumors that have progressed following prior treatment and who have no satisfactory alternative treatment options.

This indication is approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in the confirmatory trials. The safety and effectiveness of KEYTRUDA in pediatric patients with MSI-H central nervous system cancers have not been established.

Microsatellite Instability-High or Mismatch Repair Deficient Colorectal Cancer

KEYTRUDA is indicated for the treatment of patients with unresectable or metastatic MSI-H or dMMR colorectal cancer (CRC).

Gastric Cancer

KEYTRUDA, in combination with trastuzumab, fluoropyrimidine- and platinum-containing chemotherapy, is indicated for the first-line treatment of patients with locally advanced unresectable or metastatic HER2-positive gastric or gastroesophageal junction (GEJ) adenocarcinoma.

This indication is approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in the confirmatory trials.

Esophageal Cancer

KEYTRUDA is indicated for the treatment of patients with locally advanced or metastatic esophageal or gastroesophageal (GEJ) (tumors with epicenter 1 to 5 centimeters above the GEJ) carcinoma that is not amenable to surgical resection or definitive chemoradiation either:

in combination with platinum- and fluoropyrimidine-based chemotherapy, or
as a single agent after one or more prior lines of systemic therapy for patients with tumors of squamous cell histology that express PD-L1 (CPS ≥10) as determined by an FDA-approved test.
Cervical Cancer

KEYTRUDA, in combination with chemotherapy, with or without bevacizumab, is indicated for the treatment of patients with persistent, recurrent, or metastatic cervical cancer whose tumors express PD-L1 (CPS ≥1) as determined by an FDA-approved test.

KEYTRUDA, as a single agent, is indicated for the treatment of patients with recurrent or metastatic cervical cancer with disease progression on or after chemotherapy whose tumors express PD-L1 (CPS ≥1) as determined by an FDA-approved test.

Hepatocellular Carcinoma

KEYTRUDA is indicated for the treatment of patients with hepatocellular carcinoma (HCC) who have been previously treated with sorafenib. This indication is approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in the confirmatory trials.

Merkel Cell Carcinoma

KEYTRUDA is indicated for the treatment of adult and pediatric patients with recurrent locally advanced or metastatic Merkel cell carcinoma (MCC). This indication is approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in the confirmatory trials.

Renal Cell Carcinoma

KEYTRUDA, in combination with axitinib, is indicated for the first-line treatment of adult patients with advanced renal cell carcinoma (RCC).

KEYTRUDA is indicated for the adjuvant treatment of patients with RCC at intermediate-high or high risk of recurrence following nephrectomy, or following nephrectomy and resection of metastatic lesions.

Tumor Mutational Burden-High Cancer

KEYTRUDA is indicated for the treatment of adult and pediatric patients with unresectable or metastatic tumor mutational burden-high (TMB-H) [≥10 mutations/megabase] solid tumors, as determined by an FDA-approved test, that have progressed following prior treatment and who have no satisfactory alternative treatment options. This indication is approved under accelerated approval based on tumor response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in the confirmatory trials. The safety and effectiveness of KEYTRUDA in pediatric patients with TMB-H central nervous system cancers have not been established.

Cutaneous Squamous Cell Carcinoma

KEYTRUDA is indicated for the treatment of patients with recurrent or metastatic cutaneous squamous cell carcinoma (cSCC) or locally advanced cSCC that is not curable by surgery or radiation.

Triple-Negative Breast Cancer

KEYTRUDA is indicated for the treatment of patients with high-risk early-stage triple-negative breast cancer (TNBC) in combination with chemotherapy as neoadjuvant treatment, and then continued as a single agent as adjuvant treatment after surgery.

KEYTRUDA, in combination with chemotherapy, is indicated for the treatment of patients with locally recurrent unresectable or metastatic TNBC whose tumors express PD-L1 (CPS ≥10) as determined by an FDA-approved test.

Merck’s Focus on Cancer

Our goal is to translate breakthrough science into innovative oncology medicines to help people with cancer worldwide. At Merck, the potential to bring new hope to people with cancer drives our purpose and supporting accessibility to our cancer medicines is our commitment. As part of our focus on cancer, Merck is committed to exploring the potential of immuno-oncology with one of the largest development programs in the industry across more than 30 tumor types. We also continue to strengthen our portfolio through strategic acquisitions and are prioritizing the development of several promising oncology candidates with the potential to improve the treatment of advanced cancers. For more information about our oncology clinical trials, visit www.merck.com/clinicaltrials.

Guardant Health Response to Frivolous and Retaliatory Lawsuit Filed by Illumina

On March 17, 2022 Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, reported the following statement regarding a lawsuit filed by Illumina that seeks to challenge Guardant Health’s ownership and authorship of a portion of its intellectual property and to suppress competition in the market (Press release, Guardant Health, MAR 17, 2022, View Source [SID1234610284]).

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Commenting on the lawsuit, John Saia, the company’s SVP, General Counsel and Corporate Secretary, said: "At Guardant Health, our mission for the last 10 years has been to develop groundbreaking blood tests that improve cancer care and save patients’ lives. Nearly a decade after these patents were filed, Illumina’s lawsuit frivolously challenges our ownership and authorship of our intellectual property, which is the backbone of our vital work. We believe Illumina is using the courts to retaliate against us for registering concerns about the antitrust implications of Illumina’s acquisition of Grail – another provider of blood-based cancer tests – and in an attempt to slow us down in the marketplace as we get ready to launch our blood test to screen for early signs of colorectal cancer. Despite these efforts, our long-term supply agreement with Illumina remains in force and our work for patients will not be interrupted. However, we cannot stand by and allow unfair practices in the marketplace or false claims to be made about our intellectual property, which we will vigorously defend. The stakes are too high for the cancer patients who rely on our important work."

X4 Pharmaceuticals Reports Fourth-Quarter and Full-Year 2021 Financial Results and Provides Corporate Update

On March 17, 2022 X4 Pharmaceuticals, Inc. (Nasdaq: XFOR), a leader in the discovery and development of novel CXCR4-targeted small molecule therapeutics to benefit people with diseases of the immune system, reported financial results for the fourth quarter and twelve months ended December 31, 2021, and provided a corporate update (Press release, X4 Pharmaceuticals, MAR 17, 2022, View Source [SID1234610310]).

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"We are very pleased with our many accomplishments in 2021, particularly completing enrollment in the pivotal 4WHIM Phase 3 clinical trial in WHIM syndrome, the first indication we are pursuing for our oral, first-in-class CXCR4 inhibitor, mavorixafor," commented Paula Ragan, Ph.D., President and Chief Executive Officer of X4 Pharmaceuticals. "We also continued enrolling and treating patients in both our chronic neutropenia and Waldenström’s macroglobulinemia Phase 1b clinical trials, which are designed to expand the potential market opportunities for mavorixafor, and we look forward to reporting key clinical and regulatory updates for these programs throughout the year."

Dr. Ragan continued, "Our clinical and research efforts into the potential of CXCR4 antagonism have also resulted in the discovery of several novel WHIM-causing CXCR4 mutations associated with expanded disease characteristics, which we believe further underscore WHIM syndrome as an underrecognized condition and strengthen our confidence in prevalence being potentially higher than the current estimates of WHIM patients in the U.S. We look ahead to the remainder of 2022 with great excitement, as we continue to anticipate top-line data from 4WHIM by the end of the year, and additional clinical and research data throughout the year, further supporting the broad clinical and commercial potential of mavorixafor across multiple indications."

Fourth Quarter 2021 Highlights
•Completed enrollment in the ongoing pivotal 4WHIM Phase 3 clinical trial of mavorixafor in patients with WHIM (Warts, Hypogammaglobulinemia, Infections, Myelokathexis) syndrome. Thirty-one adult and pediatric patients have been enrolled in the 4WHIM trial, which was originally designed to enroll 18 – 28 patients. Top-line data from the 4WHIM trial are expected in the fourth quarter of 2022.
•Presented a wide range of clinical and research data at the 2021 American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting supporting the potential use of mavorixafor across a number of immunodeficiencies and certain cancers:

Exhibit 99.1
◦Ongoing studies across a wide variety of diseases, including Waldenström’s macroglobulinemia (WM), clear cell renal cell carcinoma, WHIM syndrome, and chronic idiopathic neutropenia, showed that oral administration of mavorixafor increased blood neutrophils, lymphocytes, and monocytes regardless of the presence or absence of CXCR4 mutations.
◦Mavorixafor efficacy has been clinically observed with short-term and long-term treatment both alone and in combination with other therapies, including axitinib, ibrutinib, and granulocyte-colony stimulating factor (G-CSF).
◦Additional data from the Phase 2 open-label extension study of mavorixafor in WHIM patients continued to show durable increases in neutrophils, lymphocytes, and monocytes; decreased frequency, severity, and duration of infections; fewer hospital/doctor visits; and sustained improvements in warts. Chronic daily administration of mavorixafor continued to be well tolerated (median treatment duration = 148.4 weeks).
◦Clinical and laboratory research resulted in the identification of a novel missense CXCR4 mutation, D84H, that further supports the company’s WHIM prevalence estimate of at least 1,000 to 3,500 patients in the U.S.
◦Initial results from the ongoing mavorixafor Phase 1b clinical trial in people with chronic neutropenia concurrently treated with granulocyte colony stimulating factor (g-CSF) and mavorixafor demonstrated elevations in white blood cells and absolute neutrophil, lymphocyte, and monocyte counts (n=4); enrollment continues, with additional data expected in the second or third quarter of 2022.
◦In December 2021, interim results reported from the ongoing Phase 1b clinical trial in WM from the low- (200 mg) and mid-level (400 mg) dose groups (October 2021 data cut) showed a 100% overall response rate (n=10, median treatment duration of 272.5 days), sustained decreases in serum IgM (n=14), and trends towards normalization of hemoglobin levels (n=14 at baseline, n=3 at 12 months).
▪As of March 2022, cohort B evaluating 600 mg of mavorixafor in combination with ibrutinib met the safety requirements to allow for the dose escalation of patients enrolled in cohort A and previously treated at low- and mid-level doses. All eligible patients are being escalated to receive 600 mg of mavorixafor once daily in combination with ibrutinib. Additional data from this trial are expected in the second half of 2022.

Upcoming Presentations
Clinical Immunology Society (CIS)
X4 will present three posters at the CIS 2022 Annual Meeting: Immune Deficiency and Dysregulation North American Conference, March 31 – April 3, 2022:
•PATH4WARD: A Genetic Testing Program to Aid in Molecular Diagnosis of Congenital Neutropenia and Other Primary Immunodeficiencies Including WHIM Syndrome.
•Characterization of CXCR4(S341Y) Variant of Uncertain Significance in the Setting of Infections, Hypogammaglobulinemia, and Warts.
•4WHIM: Evaluating the Oral CXCR4 Antagonist Mavorixafor in Patients With WHIM Syndrome via a Global Phase 3, Randomized, Placebo-Controlled Trial With Open-label Extension.

American Association for Cancer Research (AACR) (Free AACR Whitepaper)
X4 will present emerging preclinical data on mavorixafor’s ability to significantly enhance the tumor cell killing activity of the leading commercial and clinical Bruton Tyrosine Kinase Inhibitors (BTKi) including

Exhibit 99.1
ibrutinib, zanubrutinib, pirtobrutinib (LOXO-305) and nemtabrutinib (ARQ-531), at the 2022 AACR (Free AACR Whitepaper) Annual Meeting, taking place April 8 – 13, 2022.
•e-Poster #6093: Mavorixafor Enhances Efficacy of Bruton Tyrosine Kinase Inhibitors by Overcoming the Protective Effect of Bone Marrow Stroma on Tumor Cells in Waldenström’s Macroglobulinemia.
Session: OPO.TB06.01 – Tumor Microenvironment
E-posters are expected to be released at 12:00 PM CT on Friday, April 8.

Fourth Quarter and Full Year 2021 Financial Results
•Cash, Cash Equivalents & Restricted Cash: X4 had $83.1 million in cash, cash equivalents, and restricted cash as of December 31, 2021. The company expects that its cash and cash equivalents will fund company operations into the fourth quarter of 2022.
•Research and Development (R&D) Expenses were $12.2 million and $50.6 million for the fourth quarter and full year ended December 31, 2021, as compared to $12.3 million and $41.9 million for the comparable periods in 2020. R&D expenses include $0.7 million and $2.7 million of certain non-cash expenses for the quarter and full year ended December 31, 2021, respectively.
•General and Administrative Expenses (G&A) were $7.1 million and $24.7 million for the fourth quarter and full year ended December 31, 2021, as compared to $5.4 million and $20.9 million for the comparable periods in 2020. G&A expenses include $0.9 million and $3.5 million of certain non-cash expenses for the quarter and full year ended December 31, 2021, respectively.
•Net Loss: X4 reported a net loss of $30.2 million and $88.7 million for the quarter and full year ended December 31, 2021, as compared to a net loss of $18.4 million and $62.1 million for the comparable periods in 2020. Net loss for the current quarter and full year period includes a non-cash goodwill impairment charge of $9.8 million. There was no goodwill impairment charge in the prior year periods. Net losses include $1.6 million and $6.2 million of stock-based compensation expense for the quarter and full year ended December 31, 2021, respectively. Net losses included $1.4 million and $5.4 million of stock-based compensation expense for the quarter and full year ended December 31, 2020, respectively.

Conference Call and Webcast
X4 will host a conference call and webcast today at 8:30 am EDT to discuss financial results and business highlights. The conference call can be accessed by dialing (866) 721-7655 from the United States or (409) 216-0009 internationally, followed by the conference ID: 9772687. The live webcast can be accessed on the investor relations section of X4 Pharmaceuticals’ website at www.x4pharma.com. Following the completion of the call, a webcast replay of the conference call will be available on the website.

Alpine Immune Sciences Provides Corporate Update and Reports Fourth Quarter and Full Year 2021 Financial Results

On March 17, 2022 Alpine Immune Sciences, Inc. (NASDAQ: ALPN), a leading clinical-stage immunotherapy company focused on developing innovative treatments for cancer and autoimmune and inflammatory diseases, reported financial results for the fourth quarter and year ended December 31, 2021 (Press release, Alpine Immune Sciences, MAR 17, 2022, View Source [SID1234610245]).

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"2021 was a period of significant growth at Alpine with the advancement of all three of our clinical programs into significant stages of development," said Mitchell H. Gold, MD, Executive Chairman and Chief Executive Officer of Alpine. "As a result we secured $176 million in additional capital through a PIPE financing, the achievement of milestones as part of our AbbVie collaboration and an upfront payment from our recently announced discovery partnership with Horizon Therapeutics."

Dr. Gold added: "2022 looks to be a transformative year for Alpine with several important readouts anticipated across our programs, including the completion of dose escalation for davoceticept monotherapy and initiation of expansion cohorts; as well as the completion of the phase 1 healthy volunteer study for ALPN-303 and initiation of one or more patient-based studies in autoantibody-related diseases by the end of the year."

Full Year 2021 and Recent Clinical and Corporate Updates

Davoceticept (ALPN-202): Conditional CD28 costimulator and dual checkpoint inhibitor
Davoceticept monotherapy dose escalation data (NEON-1) will be presented in an oral presentation at the 2022 American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting on April 12, 2022. Initial findings of davoceticept’s tolerability and clinical activity were previously reported in an oral presentation at the 2021 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting.
NEON-1 monotherapy expansion cohorts in patients with cutaneous melanoma and PD-L1+ tumors projected to be initiated in the first half of 2022.
Announced partial clinical hold on the NEON-2 trial combining davoceticept with pembrolizumab. Participants previously enrolled can continue to receive davoceticept and pembrolizumab; the NEON-1 monotherapy trial was not affected.
ALPN-303: Dual APRIL/BAFF inhibitor
Began a first-in-human, phase 1 study of ALPN-303 in healthy volunteers in the fourth quarter of 2021; initial safety, pharmacokinetic, and pharmacodynamic findings anticipated by mid-2022.
Preclinical data, highlighting the differentiation and potential best-in-class profile of ALPN-303, were presented in two oral presentations at the European Alliance of Associations for Rheumatology and American College of Rheumatology Convergence 2021 meetings.
Plan to initiate studies in systemic lupus erythematosus (SLE) and potentially additional autoantibody-related diseases in the second half of 2022.
Acazicolcept (ALPN-101): Dual CD28/ICOS inhibitor
Received $45 million in pre-option exercise development milestones as part of the Option and License Agreement with AbbVie, bringing total upfront and milestone payments received through December 31, 2021, to $105 million.
Continue to enroll Synergy, a phase 2 trial of acazicolcept in patients with SLE.
With collaborators at the French National Institute of Health and Medical Research (INSERM), demonstrated that acazicolcept decreased manifestations of systemic sclerosis in preclinical mouse models (Arthritis Res Ther 24: 13, 2022)
General Corporate
Announced an exclusive license and collaboration agreement with Horizon Therapeutics plc for the development and commercialization of up to four preclinical candidates generated from Alpine’s unique discovery platform, which included $40 million in upfront payments ($25 million cash and $15 million equity investment at a 25% premium to the 30-day volume-weighted average share price) and eligibility to receive up to $1.5 billion in total, through future milestone-based payments.
Raised $91 million in a private placement, led by Frazier Life Sciences Public Fund with participation from Decheng Capital, BVF Partners, TCG X, Avidity Partners, OrbiMed, Omega Fund, and Logos Capital, among others.
Fourth Quarter and Full Year 2021 Financial Results

As of December 31, 2021, we had cash, cash equivalents, and investments totaling $215.4 million. Net cash used in operating activities for the year ended December 31, 2021 was $15.2 million compared to net cash provided by operating activities of $30.1 million for the year ended December 31, 2020. The Company recorded net losses of $50.3 million and $27.9 million for the years ended December 31, 2021 and 2020, respectively.

Collaboration revenue for the fourth quarter ended December 31, 2021 was $4.5 million compared to $5.6 million for the fourth quarter ended December 31, 2020. Collaboration revenue for the year ended December 31, 2021 was $23.4 million compared to $9.3 million for the year ended December 31, 2020. The amounts were primarily attributable to the revenue recognized under our AbbVie Agreement.

Research and development expenses for the fourth quarter ended December 31, 2021 were $15.4 million compared to $9.1 million for the fourth quarter ended December 31, 2020. Research and development expenses for the year ended December 31, 2021 were $58.7 million compared to $27.2 million for the year ended December 31, 2020. The increases were primarily attributable to our Synergy and NEON studies, contract manufacturing and process development of our product candidates primarily for acazicolcept and ALPN-303, increased personnel costs and other direct research activities.

General and administrative expenses for the fourth quarter ended December 31, 2021 were $4.5 million compared to $3.0 million for the fourth quarter ended December 31, 2020. General and administrative expenses for the year ended December 31, 2021 were $14.6 million compared to $10.9 million for the year ended December 31, 2020. The increase was primarily attributable to increases in professional and legal services and personnel costs.

The Company expects that its current cash resources, combined with the $25 million up-front payment received from Horizon in January 2022 and the potential $30 million in pre-option exercise milestones payable under its option and license agreement with AbbVie, for the development and commercialization of acazicolcept, will be sufficient to fund its planned operations into 2024.