Bristol-Myers Squibb Announces Results from CheckMate -459 Study Evaluating Opdivo (nivolumab) as a First-Line Treatment for Patients with Unresectable Hepatocellular Carcinoma

On June 24, 2019 Bristol-Myers Squibb Company (NYSE:BMY) reported topline results from CheckMate -459, a randomized Phase 3 study evaluating Opdivo (nivolumab) versus sorafenib as a first-line treatment in patients with unresectable hepatocellular carcinoma (HCC) (Press release, Bristol-Myers Squibb, JUN 24, 2019, View Source [SID1234537221]). The trial did not achieve statistical significance for its primary endpoint of overall survival (OS) per the pre-specified analysis (HR=0.85 [95% CI: 0.72-1.02]; p=0.0752). No new safety signals were observed with Opdivo. The full study results will be presented at an upcoming medical meeting.

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While CheckMate -459 did not reach its pre-specified primary endpoint, the results showed a clear trend towards improvement in OS for patients treated with Opdivo compared to sorafenib, a current standard of care.

"We are encouraged by the promising efficacy and safety trends seen with Opdivo in CheckMate -459, especially as HCC is a devastating and difficult-to-treat cancer, for which there have been no significant advances over sorafenib, a standard treatment, in more than a decade," said Bruno Sangro, M.D., head of the Liver Unit, Clínica Universidad de Navarra, Pamplona, Spain.

Ian M. Waxman, M.D., development lead, Gastrointestinal Cancers, Bristol-Myers Squibb, commented, "We remain confident in the important role of Opdivo for the treatment of patients with HCC and look forward to evaluating insights garnered from this trial with the goal of ensuring patients with liver cancer have the opportunity to achieve the best possible outcomes."

As part of its broad clinical program, Opdivo is being studied by the company across multiple settings and lines of therapy for HCC, including as monotherapy in the adjuvant setting (CheckMate -9DX [NCT03383458]) and in combination with Yervoy (ipilimumab) for previously treated patients (CheckMate -040 [NCT01658878]). Data from the Opdivo plus Yervoy cohort of CheckMate -040 were presented at the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting 2019. Bristol-Myers Squibb is grateful to the patients, caregivers and investigators involved in our clinical research program.

About CheckMate -459

CheckMate -459 was a Phase 3 randomized, multi-center study evaluating Opdivo versus sorafenib as a first-line treatment in patients with unresectable hepatocellular carcinoma. Patients were treated until disease progression or unacceptable toxicity. The primary endpoint of the trial was overall survival. Secondary endpoints included overall response rate, progression-free survival and the relationship between tumor PD-L1 expression and efficacy.

About Hepatocellular Carcinoma

Liver cancer is the fourth most frequent cause of cancer death worldwide and hepatocellular carcinoma (HCC), the most common type of liver cancer, is the fastest rising cause of cancer-related death in the United States. HCC is often diagnosed in the advanced stage, where effective treatment options are limited and the survival benefit provided by the first-line standard of care is less than three months over placebo. While most cases of HCC are caused by hepatitis B virus (HBV) or hepatitis C virus (HCV) infections, metabolic syndrome and nonalcoholic steatohepatitis (NASH) are rising in prevalence and expected to contribute to increased rates of HCC.

Bristol-Myers Squibb: Advancing Oncology Research

At Bristol-Myers Squibb, patients are at the center of everything we do. The focus of our research is to increase quality, long-term survival for patients and make cure a possibility. Through a unique multidisciplinary approach powered by translational science, we harness our deep scientific experience in oncology and Immuno-Oncology (I-O) research to identify novel treatments tailored to individual patient needs. Our researchers are developing a diverse, purposefully built pipeline designed to target different immune system pathways and address the complex and specific interactions between the tumor, its microenvironment and the immune system. We source innovation internally, and in collaboration with academia, government, advocacy groups and biotechnology companies, to help make the promise of transformational medicines, like I-O, a reality for patients.

About Opdivo

Opdivo is a programmed death-1 (PD-1) immune checkpoint inhibitor that is designed to uniquely harness the body’s own immune system to help restore anti-tumor immune response. By harnessing the body’s own immune system to fight cancer, Opdivo has become an important treatment option across multiple cancers.

Opdivo’s leading global development program is based on Bristol-Myers Squibb’s scientific expertise in the field of Immuno-Oncology, and includes a broad range of clinical trials across all phases, including Phase 3, in a variety of tumor types. To date, the Opdivo clinical development program has treated more than 35,000 patients. The Opdivo trials have contributed to gaining a deeper understanding of the potential role of biomarkers in patient care, particularly regarding how patients may benefit from Opdivo across the continuum of PD-L1 expression.

In July 2014, Opdivo was the first PD-1 immune checkpoint inhibitor to receive regulatory approval anywhere in the world. Opdivo is currently approved in more than 65 countries, including the United States, the European Union, Japan and China. In October 2015, the Company’s Opdivo and Yervoy combination regimen was the first Immuno-Oncology combination to receive regulatory approval for the treatment of metastatic melanoma and is currently approved in more than 50 countries, including the United States and the European Union.

U.S. FDA-APPROVED INDICATIONS FOR OPDIVO

OPDIVO (nivolumab) as a single agent is indicated for the treatment of patients with unresectable or metastatic melanoma.

OPDIVO (nivolumab), in combination with YERVOY (ipilimumab), is indicated for the treatment of patients with unresectable or metastatic melanoma.

OPDIVO (nivolumab) is indicated for the treatment of patients with metastatic non-small cell lung cancer (NSCLC) with progression on or after platinum-based chemotherapy. Patients with EGFR or ALK genomic tumor aberrations should have disease progression on FDA-approved therapy for these aberrations prior to receiving OPDIVO.

OPDIVO (nivolumab) is indicated for the treatment of patients with metastatic small cell lung cancer (SCLC) with progression after platinum-based chemotherapy and at least one other line of therapy. This indication is approved under accelerated approval based on overall response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.

OPDIVO (nivolumab) is indicated for the treatment of patients with advanced renal cell carcinoma (RCC) who have received prior anti-angiogenic therapy.

OPDIVO (nivolumab), in combination with YERVOY (ipilimumab), is indicated for the treatment of patients with intermediate or poor risk, previously untreated advanced renal cell carcinoma (RCC).

OPDIVO (nivolumab) is indicated for the treatment of adult patients with classical Hodgkin lymphoma (cHL) that has relapsed or progressed after autologous hematopoietic stem cell transplantation (HSCT) and brentuximab vedotin or after 3 or more lines of systemic therapy that includes autologous HSCT. This indication is approved under accelerated approval based on overall response rate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.

OPDIVO (nivolumab) is indicated for the treatment of patients with recurrent or metastatic squamous cell carcinoma of the head and neck (SCCHN) with disease progression on or after platinum-based therapy.

OPDIVO (nivolumab) is indicated for the treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or have disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy. This indication is approved under accelerated approval based on tumor response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.

OPDIVO (nivolumab), as a single agent, is indicated for the treatment of adult and pediatric (12 years and older) patients with microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) metastatic colorectal cancer (CRC) that has progressed following treatment with a fluoropyrimidine, oxaliplatin, and irinotecan. This indication is approved under accelerated approval based on overall response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.

OPDIVO (nivolumab), in combination with YERVOY (ipilimumab), is indicated for the treatment of adults and pediatric patients 12 years and older with microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) metastatic colorectal cancer (CRC) that has progressed following treatment with a fluoropyrimidine, oxaliplatin, and irinotecan. This indication is approved under accelerated approval based on overall response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.

OPDIVO (nivolumab) 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.

OPDIVO (nivolumab) is indicated for the adjuvant treatment of patients with melanoma with involvement of lymph nodes or metastatic disease who have undergone complete resection.

IMPORTANT SAFETY INFORMATION

WARNING: IMMUNE-MEDIATED ADVERSE REACTIONS

YERVOY can result in severe and fatal immune-mediated adverse reactions. These immune-mediated reactions may involve any organ system; however, the most common severe immune-mediated adverse reactions are enterocolitis, hepatitis, dermatitis (including toxic epidermal necrolysis), neuropathy, and endocrinopathy. The majority of these immune-mediated reactions initially manifested during treatment; however, a minority occurred weeks to months after discontinuation of YERVOY.

Assess patients for signs and symptoms of enterocolitis, dermatitis, neuropathy, and endocrinopathy, and evaluate clinical chemistries including liver function tests (LFTs), adrenocorticotropic hormone (ACTH) level, and thyroid function tests, at baseline and before each dose.

Permanently discontinue YERVOY and initiate systemic high-dose corticosteroid therapy for severe immune-mediated reactions.

Immune-Mediated Pneumonitis

OPDIVO can cause immune-mediated pneumonitis. Fatal cases have been reported. Monitor patients for signs with radiographic imaging and for symptoms of pneumonitis. Administer corticosteroids for Grade 2 or more severe pneumonitis. Permanently discontinue for Grade 3 or 4 and withhold until resolution for Grade 2. In patients receiving OPDIVO monotherapy, fatal cases of immune-mediated pneumonitis have occurred. Immune-mediated pneumonitis occurred in 3.1% (61/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, immune-mediated pneumonitis occurred in 6% (25/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated pneumonitis occurred in 4.4% (24/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated pneumonitis occurred in 1.7% (2/119) of patients.

In Checkmate 205 and 039, pneumonitis, including interstitial lung disease, occurred in 6.0% (16/266) of patients receiving OPDIVO. Immune-mediated pneumonitis occurred in 4.9% (13/266) of patients receiving OPDIVO: Grade 3 (n=1) and Grade 2 (n=12).

Immune-Mediated Colitis

OPDIVO can cause immune-mediated colitis. Monitor patients for signs and symptoms of colitis. Administer corticosteroids for Grade 2 (of more than 5 days duration), 3, or 4 colitis. Withhold OPDIVO monotherapy for Grade 2 or 3 and permanently discontinue for Grade 4 or recurrent colitis upon re-initiation of OPDIVO. When administered with YERVOY, withhold OPDIVO and YERVOY for Grade 2 and permanently discontinue for Grade 3 or 4 or recurrent colitis. In patients receiving OPDIVO monotherapy, immune-mediated colitis occurred in 2.9% (58/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, immune-mediated colitis occurred in 26% (107/407) of patients including three fatal cases. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated colitis occurred in 10% (52/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated colitis occurred in 7% (8/119) of patients.

In a separate Phase 3 study of YERVOY 3 mg/kg, severe, life-threatening, or fatal (diarrhea of ≥7 stools above baseline, fever, ileus, peritoneal signs; Grade 3-5) immune-mediated enterocolitis occurred in 34 (7%) patients. Across all YERVOY-treated patients in that study (n=511), 5 (1%) developed intestinal perforation, 4 (0.8%) died as a result of complications, and 26 (5%) were hospitalized for severe enterocolitis.

Immune-Mediated Hepatitis

OPDIVO can cause immune-mediated hepatitis. Monitor patients for abnormal liver tests prior to and periodically during treatment. Administer corticosteroids for Grade 2 or greater transaminase elevations. For patients without HCC, withhold OPDIVO for Grade 2 and permanently discontinue OPDIVO for Grade 3 or 4. For patients with HCC, withhold OPDIVO and administer corticosteroids if AST/ALT is within normal limits at baseline and increases to >3 and up to 5 times the upper limit of normal (ULN), if AST/ALT is >1 and up to 3 times ULN at baseline and increases to >5 and up to 10 times the ULN, and if AST/ALT is >3 and up to 5 times ULN at baseline and increases to >8 and up to 10 times the ULN. Permanently discontinue OPDIVO and administer corticosteroids if AST or ALT increases to >10 times the ULN or total bilirubin increases >3 times the ULN. In patients receiving OPDIVO monotherapy, immune-mediated hepatitis occurred in 1.8% (35/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, immune-mediated hepatitis occurred in 13% (51/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated hepatitis occurred in 7% (38/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated hepatitis occurred in 8% (10/119) of patients.

In Checkmate 040, immune-mediated hepatitis requiring systemic corticosteroids occurred in 5% (8/154) of patients receiving OPDIVO.

In a separate Phase 3 study of YERVOY 3 mg/kg, severe, life-threatening, or fatal hepatotoxicity (AST or ALT elevations >5x the ULN or total bilirubin elevations >3x the ULN; Grade 3-5) occurred in 8 (2%) patients, with fatal hepatic failure in 0.2% and hospitalization in 0.4%.

Immune-Mediated Neuropathies

In a separate Phase 3 study of YERVOY 3 mg/kg, 1 case of fatal Guillain-Barré syndrome and 1 case of severe (Grade 3) peripheral motor neuropathy were reported.

Immune-Mediated Endocrinopathies

OPDIVO can cause immune-mediated hypophysitis, immune-mediated adrenal insufficiency, autoimmune thyroid disorders, and Type 1 diabetes mellitus. Monitor patients for signs and symptoms of hypophysitis, signs and symptoms of adrenal insufficiency, thyroid function prior to and periodically during treatment, and hyperglycemia. Administer hormone replacement as clinically indicated and corticosteroids for Grade 2 or greater hypophysitis. Withhold for Grade 2 or 3 and permanently discontinue for Grade 4 hypophysitis. Administer corticosteroids for Grade 3 or 4 adrenal insufficiency. Withhold for Grade 2 and permanently discontinue for Grade 3 or 4 adrenal insufficiency. Administer hormone-replacement therapy for hypothyroidism. Initiate medical management for control of hyperthyroidism. Withhold OPDIVO for Grade 3 and permanently discontinue for Grade 4 hyperglycemia.

In patients receiving OPDIVO monotherapy, hypophysitis occurred in 0.6% (12/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, hypophysitis occurred in 9% (36/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, hypophysitis occurred in 4.6% (25/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated hypophysitis occurred in 3.4% (4/119) of patients. In patients receiving OPDIVO monotherapy, adrenal insufficiency occurred in 1% (20/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, adrenal insufficiency occurred in 5% (21/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, adrenal insufficiency occurred in 7% (41/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, adrenal insufficiency occurred in 5.9% (7/119) of patients. In patients receiving OPDIVO monotherapy, hypothyroidism or thyroiditis resulting in hypothyroidism occurred in 9% (171/1994) of patients. Hyperthyroidism occurred in 2.7% (54/1994) of patients receiving OPDIVO monotherapy. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, hypothyroidism or thyroiditis resulting in hypothyroidism occurred in 22% (89/407) of patients. Hyperthyroidism occurred in 8% (34/407) of patients receiving this dose of OPDIVO with YERVOY. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, hypothyroidism or thyroiditis resulting in hypothyroidism occurred in 22% (119/547) of patients. Hyperthyroidism occurred in 12% (66/547) of patients receiving this dose of OPDIVO with YERVOY. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, hypothyroidism or thyroiditis resulting in hypothyroidism occurred in 15% (18/119) of patients. Hyperthyroidism occurred in 12% (14/119) of patients. In patients receiving OPDIVO monotherapy, diabetes occurred in 0.9% (17/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, diabetes occurred in 1.5% (6/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, diabetes occurred in 2.7% (15/547) of patients.

In a separate Phase 3 study of YERVOY 3 mg/kg, severe to life-threatening immune-mediated endocrinopathies (requiring hospitalization, urgent medical intervention, or interfering with activities of daily living; Grade 3-4) occurred in 9 (1.8%) patients. All 9 patients had hypopituitarism, and some had additional concomitant endocrinopathies such as adrenal insufficiency, hypogonadism, and hypothyroidism. Six of the 9 patients were hospitalized for severe endocrinopathies.

Immune-Mediated Nephritis and Renal Dysfunction

OPDIVO can cause immune-mediated nephritis. Monitor patients for elevated serum creatinine prior to and periodically during treatment. Administer corticosteroids for Grades 2-4 increased serum creatinine. Withhold OPDIVO for Grade 2 or 3 and permanently discontinue for Grade 4 increased serum creatinine. In patients receiving OPDIVO monotherapy, immune-mediated nephritis and renal dysfunction occurred in 1.2% (23/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, immune-mediated nephritis and renal dysfunction occurred in 2.2% (9/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated nephritis and renal dysfunction occurred in 4.6% (25/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated nephritis and renal dysfunction occurred in 1.7% (2/119) of patients.

Immune-Mediated Skin Adverse Reactions and Dermatitis

OPDIVO can cause immune-mediated rash, including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), some cases with fatal outcome. Administer corticosteroids for Grade 3 or 4 rash. Withhold for Grade 3 and permanently discontinue for Grade 4 rash. For symptoms or signs of SJS or TEN, withhold OPDIVO and refer the patient for specialized care for assessment and treatment; if confirmed, permanently discontinue. In patients receiving OPDIVO monotherapy, immune-mediated rash occurred in 9% (171/1994) of patients. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg, immune-mediated rash occurred in 22.6% (92/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated rash occurred in 16.6% (91/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, immune-mediated rash occurred in 14% (17/119) of patients.

In a separate Phase 3 study of YERVOY 3 mg/kg, severe, life-threatening, or fatal immune-mediated dermatitis (eg, Stevens-Johnson syndrome, toxic epidermal necrolysis, or rash complicated by full thickness dermal ulceration, or necrotic, bullous, or hemorrhagic manifestations; Grade 3-5) occurred in 13 (2.5%) patients. 1 (0.2%) patient died as a result of toxic epidermal necrolysis. 1 additional patient required hospitalization for severe dermatitis.

Immune-Mediated Encephalitis

OPDIVO can cause immune-mediated encephalitis. Evaluation of patients with neurologic symptoms may include, but not be limited to, consultation with a neurologist, brain MRI, and lumbar puncture. Withhold OPDIVO in patients with new-onset moderate to severe neurologic signs or symptoms and evaluate to rule out other causes. If other etiologies are ruled out, administer corticosteroids and permanently discontinue OPDIVO for immune-mediated encephalitis. In patients receiving OPDIVO monotherapy, encephalitis occurred in 0.2% (3/1994) of patients. Fatal limbic encephalitis occurred in one patient after 7.2 months of exposure despite discontinuation of OPDIVO and administration of corticosteroids. Encephalitis occurred in one patient receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg (0.2%) after 1.7 months of exposure. Encephalitis occurred in one RCC patient receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg (0.2%) after approximately 4 months of exposure. Encephalitis occurred in one MSI-H/dMMR mCRC patient (0.8%) receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg after 15 days of exposure.

Other Immune-Mediated Adverse Reactions

Based on the severity of the adverse reaction, permanently discontinue or withhold OPDIVO, administer high-dose corticosteroids, and, if appropriate, initiate hormone-replacement therapy. Across clinical trials of OPDIVO monotherapy or in combination with YERVOY, the following clinically significant immune-mediated adverse reactions, some with fatal outcome, occurred in <1.0% of patients receiving OPDIVO: myocarditis, rhabdomyolysis, myositis, uveitis, iritis, pancreatitis, facial and abducens nerve paresis, demyelination, polymyalgia rheumatica, autoimmune neuropathy, Guillain-Barré syndrome, hypopituitarism, systemic inflammatory response syndrome, gastritis, duodenitis, sarcoidosis, histiocytic necrotizing lymphadenitis (Kikuchi lymphadenitis), motor dysfunction, vasculitis, aplastic anemia, pericarditis, and myasthenic syndrome.

If uveitis occurs in combination with other immune-mediated adverse reactions, consider a Vogt-Koyanagi-Harada-like syndrome, which has been observed in patients receiving OPDIVO and may require treatment with systemic steroids to reduce the risk of permanent vision loss.

Infusion Reactions

OPDIVO can cause severe infusion reactions, which have been reported in <1.0% of patients in clinical trials. Discontinue OPDIVO in patients with Grade 3 or 4 infusion reactions. Interrupt or slow the rate of infusion in patients with Grade 1 or 2. In patients receiving OPDIVO monotherapy as a 60-minute infusion, infusion-related reactions occurred in 6.4% (127/1994) of patients. In a separate study in which patients received OPDIVO monotherapy as a 60-minute infusion or a 30-minute infusion, infusion-related reactions occurred in 2.2% (8/368) and 2.7% (10/369) of patients, respectively. Additionally, 0.5% (2/368) and 1.4% (5/369) of patients, respectively, experienced adverse reactions within 48 hours of infusion that led to dose delay, permanent discontinuation or withholding of OPDIVO. In patients receiving OPDIVO 1 mg/kg with YERVOY 3 mg/kg every 3 weeks, infusion-related reactions occurred in 2.5% (10/407) of patients. In RCC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, infusion-related reactions occurred in 5.1% (28/547) of patients. In MSI-H/dMMR mCRC patients receiving OPDIVO 3 mg/kg with YERVOY 1 mg/kg, infusion-related reactions occurred in 4.2% (5/119) of patients.

Complications of Allogeneic Hematopoietic Stem Cell Transplantation

Fatal and other serious complications can occur in patients who receive allogeneic hematopoietic stem cell transplantation (HSCT) before or after being treated with a PD-1 receptor blocking antibody. Transplant-related complications include hyperacute graft-versus-host-disease (GVHD), acute GVHD, chronic GVHD, hepatic veno-occlusive disease (VOD) after reduced intensity conditioning, and steroid-requiring febrile syndrome (without an identified infectious cause). These complications may occur despite intervening therapy between PD-1 blockade and allogeneic HSCT.

Follow patients closely for evidence of transplant-related complications and intervene promptly. Consider the benefit versus risks of treatment with a PD-1 receptor blocking antibody prior to or after an allogeneic HSCT.

Embryo-Fetal Toxicity

Based on their mechanisms of action, OPDIVO and YERVOY can cause fetal harm when administered to a pregnant woman. Advise pregnant women of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment with an OPDIVO- or YERVOY- containing regimen and for at least 5 months after the last dose of OPDIVO.

Increased Mortality in Patients with Multiple Myeloma when OPDIVO is Added to a Thalidomide Analogue and Dexamethasone

In clinical trials in patients with multiple myeloma, the addition of OPDIVO to a thalidomide analogue plus dexamethasone resulted in increased mortality. Treatment of patients with multiple myeloma with a PD-1 or PD-L1 blocking antibody in combination with a thalidomide analogue plus dexamethasone is not recommended outside of controlled clinical trials.

Lactation

It is not known whether OPDIVO or YERVOY is present in human milk. Because many drugs, including antibodies, are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from an OPDIVO-containing regimen, advise women to discontinue breastfeeding during treatment. Advise women to discontinue breastfeeding during treatment with YERVOY and for 3 months following the final dose.

Serious Adverse Reactions

In Checkmate 037, serious adverse reactions occurred in 41% of patients receiving OPDIVO (n=268). Grade 3 and 4 adverse reactions occurred in 42% of patients receiving OPDIVO. The most frequent Grade 3 and 4 adverse drug reactions reported in 2% to <5% of patients receiving OPDIVO were abdominal pain, hyponatremia, increased aspartate aminotransferase, and increased lipase. In Checkmate 066, serious adverse reactions occurred in 36% of patients receiving OPDIVO (n=206). Grade 3 and 4 adverse reactions occurred in 41% of patients receiving OPDIVO. The most frequent Grade 3 and 4 adverse reactions reported in ≥2% of patients receiving OPDIVO were gamma-glutamyltransferase increase (3.9%) and diarrhea (3.4%). In Checkmate 067, serious adverse reactions (74% and 44%), adverse reactions leading to permanent discontinuation (47% and 18%) or to dosing delays (58% and 36%), and Grade 3 or 4 adverse reactions (72% and 51%) all occurred more frequently in the OPDIVO plus YERVOY arm (n=313) relative to the OPDIVO arm (n=313). The most frequent (≥10%) serious adverse reactions in the OPDIVO plus YERVOY arm and the OPDIVO arm, respectively, were diarrhea (13% and 2.2%), colitis (10% and 1.9%), and pyrexia (10% and 1.0%). In Checkmate 017 and 057, serious adverse reactions occurred in 46% of patients receiving OPDIVO (n=418). The most frequent serious adverse reactions reported in ≥2% of patients receiving OPDIVO were pneumonia, pulmonary embolism, dyspnea, pyrexia, pleural effusion, pneumonitis, and respiratory failure. In Checkmate 032, serious adverse reactions occurred in 45% of patients receiving OPDIVO (n=245). The most frequent serious adverse reactions reported in at least 2% of patients receiving OPDIVO were pneumonia, dyspnea, pneumonitis, pleural effusions, and dehydration. In Checkmate 025, serious adverse reactions occurred in 47% of patients receiving OPDIVO (n=406). The most frequent serious adverse reactions reported in ≥2% of patients were acute kidney injury, pleural effusion, pneumonia, diarrhea, and hypercalcemia. In Checkmate 214, serious adverse reactions occurred in 59% of patients receiving OPDIVO plus YERVOY and in 43% of patients receiving sunitinib. The most frequent serious adverse reactions reported in ≥2% of patients were diarrhea, pyrexia, pneumonia, pneumonitis, hypophysitis, acute kidney injury, dyspnea, adrenal insufficiency, and colitis; in patients treated with sunitinib, they were pneumonia, pleural effusion, and dyspnea. In Checkmate 205 and 039, adverse reactions leading to discontinuation occurred in 7% and dose delays due to adverse reactions occurred in 34% of patients (n=266). Serious adverse reactions occurred in 26% of patients. The most frequent serious adverse reactions reported in ≥1% of patients were pneumonia, infusion-related reaction, pyrexia, colitis or diarrhea, pleural effusion, pneumonitis, and rash. Eleven patients died from causes other than disease progression: 3 from adverse reactions within 30 days of the last OPDIVO dose, 2 from infection 8 to 9 months after completing OPDIVO, and 6 from complications of allogeneic HSCT. In Checkmate 141, serious adverse reactions occurred in 49% of patients receiving OPDIVO (n=236). The most frequent serious adverse reactions reported in ≥2% of patients receiving OPDIVO were pneumonia, dyspnea, respiratory failure, respiratory tract infection, and sepsis. In Checkmate 275, serious adverse reactions occurred in 54% of patients receiving OPDIVO (n=270). The most frequent serious adverse reactions reported in ≥2% of patients receiving OPDIVO were urinary tract infection, sepsis, diarrhea, small intestine obstruction, and general physical health deterioration. In Checkmate 142 in MSI-H/dMMR mCRC patients receiving OPDIVO with YERVOY, serious adverse reactions occurred in 47% of patients. The most frequent serious adverse reactions reported in ≥2% of patients were colitis/diarrhea, hepatic events, abdominal pain, acute kidney injury, pyrexia, and dehydration. In Checkmate 040, serious adverse reactions occurred in 49% of patients (n=154). The most frequent serious adverse reactions reported in ≥2% of patients were pyrexia, ascites, back pain, general physical health deterioration, abdominal pain, and pneumonia. In Checkmate 238, Grade 3 or 4 adverse reactions occurred in 25% of OPDIVO-treated patients (n=452). The most frequent Grade 3 and 4 adverse reactions reported in ≥2% of OPDIVO-treated patients were diarrhea and increased lipase and amylase. Serious adverse reactions occurred in 18% of OPDIVO-treated patients.

Common Adverse Reactions

In Checkmate 037, the most common adverse reaction (≥20%) reported with OPDIVO (n=268) was rash (21%). In Checkmate 066, the most common adverse reactions (≥20%) reported with OPDIVO (n=206) vs dacarbazine (n=205) were fatigue (49% vs 39%), musculoskeletal pain (32% vs 25%), rash (28% vs 12%), and pruritus (23% vs 12%). In Checkmate 067, the most common (≥20%) adverse reactions in the OPDIVO plus YERVOY arm (n=313) were fatigue (62%), diarrhea (54%), rash (53%), nausea (44%), pyrexia (40%), pruritus (39%), musculoskeletal pain (32%), vomiting (31%), decreased appetite (29%), cough (27%), headache (26%), dyspnea (24%), upper respiratory tract infection (23%), arthralgia (21%), and increased transaminases (25%). In Checkmate 067, the most common (≥20%) adverse reactions in the OPDIVO arm (n=313) were fatigue (59%), rash (40%), musculoskeletal pain (42%), diarrhea (36%), nausea (30%), cough (28%), pruritus (27%), upper respiratory tract infection (22%), decreased appetite (22%), headache (22%), constipation (21%), arthralgia (21%), and vomiting (20%). In Checkmate 017 and 057, the most common adverse reactions (≥20%) in patients receiving OPDIVO (n=418) were fatigue, musculoskeletal pain, cough, dyspnea, and decreased appetite. In Checkmate 032, the most common adverse reactions (≥20%) in patients receiving OPDIVO (n=245) were fatigue (45%), decreased appetite (27%), musculoskeletal pain (25%), dyspnea (22%), nausea (22%), diarrhea (21%), constipation (20%), and cough (20%). In Checkmate 025, the most common adverse reactions (≥20%) reported in patients receiving OPDIVO (n=406) vs everolimus (n=397) were fatigue (56% vs 57%), cough (34% vs 38%), nausea (28% vs 29%), rash (28% vs 36%), dyspnea (27% vs 31%), diarrhea (25% vs 32%), constipation (23% vs 18%), decreased appetite (23% vs 30%), back pain (21% vs 16%), and arthralgia (20% vs 14%). In Checkmate 214, the most common adverse reactions (≥20%) reported in patients treated with OPDIVO plus YERVOY (n=547) vs sunitinib (n=535) were fatigue (58% vs 69%), rash (39% vs 25%), diarrhea (38% vs 58%), musculoskeletal pain (37% vs 40%), pruritus (33% vs 11%), nausea (30% vs 43%), cough (28% vs 25%), pyrexia (25% vs 17%), arthralgia (23% vs 16%), decreased appetite (21% vs 29%), dyspnea (20% vs 21%), and vomiting (20% vs 28%). In Checkmate 205 and 039, the most common adverse reactions (≥20%) reported in patients receiving OPDIVO (n=266) were upper respiratory tract infection (44%), fatigue (39%), cough (36%), diarrhea (33%), pyrexia (29%), musculoskeletal pain (26%), rash (24%), nausea (20%) and pruritus (20%). In Checkmate 141, the most common adverse reactions (≥10%) in patients receiving OPDIVO (n=236) were cough and dyspnea at a higher incidence than investigator’s choice. In Checkmate 275, the most common adverse reactions (≥20%) reported in patients receiving OPDIVO (n=270) were fatigue (46%), musculoskeletal pain (30%), nausea (22%), and decreased appetite (22%). In Checkmate 142 in MSI-H/dMMR mCRC patients receiving OPDIVO as a single agent, the most common adverse reactions (≥20%) were fatigue (54%), diarrhea (43%), abdominal pain (34%), nausea (34%), vomiting (28%), musculoskeletal pain (28%), cough (26%), pyrexia (24%), rash (23%), constipation (20%), and upper respiratory tract infection (20%). In Checkmate 142 in MSI-H/dMMR mCRC patients receiving OPDIVO with YERVOY, the most common adverse reactions (≥20%) were fatigue (49%), diarrhea (45%), pyrexia (36%), musculoskeletal pain (36%), abdominal pain (30%), pruritus (28%), nausea (26%), rash (25%), decreased appetite (20%), and vomiting (20%). In Checkmate 040, the most common adverse reactions (≥20%) in patients receiving OPDIVO (n=154) were fatigue (38%), musculoskeletal pain (36%), abdominal pain (34%), pruritus (27%), diarrhea (27%), rash (26%), cough (23%), and decreased appetite (22%). In Checkmate 238, the most common adverse reactions (≥20%) reported in OPDIVO-treated patients (n=452) vs ipilimumab-treated patients (n=453) were fatigue (57% vs 55%), diarrhea (37% vs 55%), rash (35% vs 47%), musculoskeletal pain (32% vs 27%), pruritus (28% vs 37%), headache (23% vs 31%), nausea (23% vs 28%), upper respiratory infection (22% vs 15%), and abdominal pain (21% vs 23%). The most common immune-mediated adverse reactions were rash (16%), diarrhea/colitis (6%), and hepatitis (3%).

In a separate Phase 3 study of YERVOY 3 mg/kg, the most common adverse reactions (≥5%) in patients who received YERVOY at 3 mg/kg were fatigue (41%), diarrhea (32%), pruritus (31%), rash (29%), and colitis (8%).

Please see U.S. Full Prescribing Information for OPDIVO and YERVOY, including Boxed WARNING regarding immune-mediated adverse reactions for YERVOY.

Checkmate Trials and Patient Populations

Checkmate 037–previously treated metastatic melanoma; Checkmate 066–previously untreated metastatic melanoma; Checkmate 067–previously untreated metastatic melanoma, as a single agent or in combination with YERVOY; Checkmate 017–second-line treatment of metastatic squamous non-small cell lung cancer; Checkmate 057–second-line treatment of metastatic non-squamous non-small cell lung cancer; Checkmate 032–small cell lung cancer; Checkmate 025–previously treated renal cell carcinoma; Checkmate 214–previously untreated renal cell carcinoma, in combination with YERVOY; Checkmate 205/039–classical Hodgkin lymphoma; Checkmate 141–recurrent or metastatic squamous cell carcinoma of the head and neck; Checkmate 275–urothelial carcinoma; Checkmate 142–MSI-H or dMMR metastatic colorectal cancer, as a single agent or in combination with YERVOY; Checkmate 040–hepatocellular carcinoma; Checkmate 238–adjuvant treatment of melanoma.

About the Bristol-Myers Squibb and Ono Pharmaceutical Collaboration

In 2011, through a collaboration agreement with Ono Pharmaceutical Co., Bristol-Myers Squibb expanded its territorial rights to develop and commercialize Opdivo globally, except in Japan, South Korea and Taiwan, where Ono had retained all rights to the compound at the time. On July 23, 2014, Ono and Bristol-Myers Squibb further expanded the companies’ strategic collaboration agreement to jointly develop and commercialize multiple immunotherapies – as single agents and combination regimens – for patients with cancer in Japan, South Korea and Taiwan.

U.S. Food and Drug Administration accepts GSK’s application for ZEJULA (niraparib) in late stage ovarian cancer with priority review

On June 24, 2019 GlaxoSmithKline plc reported that TESARO, an oncology-focused business acquired by GSK, submitted a supplemental New Drug Application (sNDA) to the U.S. Food and Drug Administration (FDA) for ZEJULA (niraparib) (Press release, GlaxoSmithKline, JUN 24, 2019, View Source [SID1234537220]). The application was granted priority review and has an action date of 24 October 2019.

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The sNDA supports a potential new indication for the treatment of advanced ovarian, fallopian tube, or primary peritoneal cancer patients who have been treated with three or more prior chemotherapy regimens and whose cancer is associated with either:

BRCA mutation or
Homologous recombination deficiency (HRD) and have progressed more than six months after the last platinum-based chemotherapy.
Mary Lynne Hedley, Ph.D., President and Chief Operating Officer of TESARO, said, "The results of the QUADRA study demonstrate that ZEJULA is active as a late-line treatment for patients beyond those with BRCA mutations. With this study, we continue to advance our mission to provide more patients with ovarian cancer an opportunity to benefit from treatment with ZEJULA."

Dr Hal Barron, Chief Scientific Officer and President, R&D, GSK, said: "We know ZEJULA plays an important role in helping women with ovarian cancer whose disease has progressed despite initial therapy. Our hope is that over time, our ongoing clinical trials will demonstrate that this medicine can benefit even more patients."

The niraparib sNDA is supported by data from the QUADRA trial. Data from the QUADRA trial were recently published in Lancet Oncology.[1]

About QUADRA

QUADRA is a large multicenter, open-label, single-arm, phase 2 study that evaluated the safety and activity of niraparib in adult patients with relapsed, high-grade serous epithelial ovarian, fallopian tube, or primary peritoneal cancer who were treated with three or more previous chemotherapy regimens. Patients received oral niraparib 300 mg once daily continuously until disease progression. The primary objective was the proportion of patients achieving an investigator-assessed confirmed overall response in patients with homologous recombination deficiency (HRD)-positive tumours (including patients with BRCA and without BRCA mutations) sensitive to their last platinum-based therapy. Additional objectives of the study was to evaluate the efficacy of niraparib in the broad late-line ovarian cancer population overall, and in subgroups defined by clinical and molecular biomarkers, such as platinum-sensitivity and BRCAmut and HRD status."

About Ovarian Cancer

Approximately 22,000 women are diagnosed each year with ovarian cancer in the United States, and more than 65,000 women are diagnosed annually in Europe. Ovarian cancer is the fifth most frequent cause of cancer death among women. Despite high response rates to platinum-based chemotherapy in the second-line advanced treatment setting, approximately 85% of patients will experience recurrence within two years.

About niraparib

Niraparib is an oral, once-daily PARP inhibitor that is currently being evaluated in three pivotal trials. TESARO is building a robust niraparib franchise by assessing activity across multiple tumor types and by evaluating several potential combinations of niraparib with other therapeutics. The ongoing development program for niraparib includes a Phase 3 trial in patients with first-line ovarian cancer (the PRIMA trial), a Phase 3 trial for the treatment of patients with germline BRCA-mutated, metastatic breast cancer (the BRAVO trial), and a registrational Phase 2 treatment trial in patients with ovarian cancer (the QUADRA trial). Several combination studies are also underway, including trials of niraparib plus pembrolizumab in metastatic, triple-negative breast cancer and advanced, platinum-resistant ovarian cancer (the TOPACIO trial) and niraparib plus bevacizumab in recurrent, platinum-sensitive ovarian cancer (the ENGOT-OV24/AVANOVA trial). Janssen Biotech has licensed rights to develop and commercialize niraparib specifically for patients with prostate cancer worldwide, except in Japan.

MorphoSys Presents Primary Analysis Data from L-MIND Study of Tafasitamab (MOR208) in combination with Lenalidomide in r/r DLBCL at ICML 2019

On June 22, 2019 MorphoSys reported Primary Analysis Data from L-MIND Study of Tafasitamab (MOR208) in combination with Lenalidomide in r/r DLBCL at ICML 2019 (Press release, MorphoSys, JUN 22, 2019, View Source [SID1234537216])

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MorphoSys AG (FSE: MOR; Prime Standard Segment; MDAX & TecDAX; Nasdaq: MOR) presented data from the primary analysis (cut-off date November 30, 2018) of the ongoing single-arm phase 2 clinical trial known as L-MIND in an oral presentation at the 15th International Conference on Malignant Lymphoma (ICML) in Lugano, Switzerland.

The L-MIND study enrolled patients with relapsed or refractory diffuse large B cell lymphoma (r/r DLBCL), who are ineligible for high-dose chemotherapy (HDC) and autologous stem cell transplantation (ASCT). The primary analysis data reported today included 80 patients enrolled into the trial who had received tafasitamab and lenalidomide and had been followed-up as per protocol for at least one year. Efficacy results in this update are based on response rates assessed by an independent review committee for all 80 patients. Patients enrolled had a median age of 72 years and had received a median of two prior treatment lines.

The primary endpoint, defined as best objective response rate (ORR) compared to published data on the respective monotherapies, has been met. The ORR was 60% (48 out of 80 patients), and the complete response (CR) rate was 43% (34 out of 80 patients). 82% of the CRs were PET (positron emission tomography)-confirmed. The median progression-free survival (mPFS) was 12.1 months with a median follow-up of 17.3 months. Responses were durable with a median duration of response (mDoR) of 21.7 months. Median overall survival (mOS) was not reached (NR) (95% CI 18.3 months – NR) with a median follow-up time of 19.6 months. The 12-month OS rate was 73.3%.

Efficacy parameters, such as response rates, showed comparable results in most patient subgroups of interest, including rituximab refractory versus non-refractory and primary refractory versus non-primary refractory, amongst others.

The L-MIND treatment combination was generally well tolerated in this study; infusion-related reactions (IRRs) for tafasitamab were reported for only 6% of the patients and were limited to grade 1. The most frequent treatment-emergent adverse events (TEAEs) with a toxicity grading of 3 or higher were neutropenia in 48%, thrombocytopenia in 17%, and anemia in 7% patients each. Treatment-related serious adverse events (SAEs) occurred in 15 (18.5%) patients, the majority of which were infections or neutropenic fever. 37 (43%) patients required dose reduction with lenalidomide, 62 patients (78%) could stay on a daily lenalidomide dose of 20 mg or higher.

"We are very pleased by the results from the primary analysis of the L-MIND study and are especially encouraged by the durability of the responses and the OS that we are seeing", commented Dr. Malte Peters, Chief Development Officer of MorphoSys AG. "If approved, we believe that with tafasitamab in combination with lenalidomide we can offer a chemo-free treatment option to patients with r/r DLBCL who are ineligible for HDC and ASCT. We remain highly committed to completing the submission of a BLA to the FDA by end of this year."

"The results from the L-MIND study presented today at the ICML meeting in Lugano are very encouraging. We are particularly pleased to see such a high complete response rate and a prolonged response duration, which is unusual in this population of relapsed or refractory DLBCL. The number of patients on this study with a complete remission was 43%; the probability that these patients remain in remission 21 months after they started treatment was 93% based on Kaplan Meier analysis of DoR", commented Professor Gilles Salles, Chair of the Clinical Hematology Department at the University of Lyon, France, and lead investigator of L-MIND.

L-MIND is designed to investigate the antibody tafasitamab in combination with lenalidomide in patients with r/r DLBCL who are not eligible for high-dose chemotherapy and autologous stem cell transplantation. Tafasitamab is an investigational humanized Fc-enhanced monoclonal antibody directed against CD19 and is currently in clinical development in blood cancer indications.

Details about the presentation on L-MIND data at ICML 2019:
Abstract publication number: 124
Session name: Session 11 – New Drug Combinations
Session date and time: Saturday, June 22, 2019, 08:30am-10:00am CEST
Presentation time: 08:30am CEST
Venue: Lugano Convention Centre (Palazzo dei Congressi), Room A and B; Lugano, Switzerland

MorphoSys will host a "Meet the Team" event in New York on June 25, 2019, 10:00am EDT (3:00pm BST, 4:00pm CEST). The presentation, a live webcast and a replay of the webcast will be made available at View Source

MEI Pharma Presents Updated Clinical Data from the ME-401 Phase 1b study in Patients with Indolent B-cell Malignancies at the 2019 International Conference on Malignant Lymphoma (ICML)

On June 22, 2019 MEI Pharma, Inc. (NASDAQ: MEIP), a late-stage pharmaceutical company focused on advancing potential new therapies for cancer, reported that updated data presented in an oral presentation at ICML 2019 from a Phase 1b study of investigational ME-401, a selective oral inhibitor of PI3K delta, demonstrate an 83% overall response rate in patients with relapsed or refractory (r/r) follicular lymphoma (FL) and r/r chronic lymphocytic leukemia or small lymphocytic lymphoma (CLL/SLL) (Press release, MEI Pharma, JUN 22, 2019, View Source [SID1234537215]).

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Additionally, the data demonstrate:

Overall response rates of 75% to 100% across all patient groups receiving ME-401.
100% overall response rate in all patients with CLL/SLL.
A lower rate of delayed, grade 3 adverse events observed in patients dosed on the intermittent schedule (IS) (e.g. 9.7% diarrhea/colitis for IS dosing).
Durable responses in patients with FL and CLL/SLL across both CS and IS dosing groups.
Median PFS not reached.
The ME-401 ICML 2019 presentation can be accessed on the MEI Pharma website.

"The Phase 1b interim results presented at ICML support the high level of confidence we hold in ME-401 as a potential new treatment for patients with B-cell malignancies; we were particularly excited to see continued strong and durable responses in chronic lymphocytic leukemia, especially as the majority of the patients tested expressed unmutated IGHV, which is generally associated with a poorer prognosis," said Daniel P. Gold, Ph.D., president and chief executive officer of MEI Pharma. "ME-401’s rapid and preferential accumulation in tumor cells, among other properties, we believe enable it to be successfully administered on our intermittent dosing schedule, which results in lower toxicity while maintaining potency as presented in our data to date. Based on the pharmacological profile of ME-401, we see important opportunities to investigate various combination regimens to treat B-cell malignancies."

MEI has initiated a global Phase 2 study to evaluate the efficacy, safety and tolerability of ME-401 as a single agent in patients with follicular lymphoma after failure of at least two prior systemic therapies including chemotherapy and an anti-CD20 antibody. The Phase 2 TIDAL study (Trials of PI3K DeltA in Non-Hodgkin’s Lymphoma) is intended to support an accelerated approval marketing application with the U.S. Food and Drug Administration.

ME-401 Phase 1b Clinical Study
The ongoing Phase 1b clinical study is evaluating ME-401 as a monotherapy and in combination with rituximab or with zanubrutinib in patients with r/r B-cell malignancies. Over 85 patients have been enrolled to date, of which data on 71 patients were presented today at ICML 2019 including 17 with r/r CLL/SLL and 54 patients with r/r FL.

ME-401 was administered once daily at 60 mg for two 28-day cycles and then on an intermittent schedule of once daily dosing for the first 7 days of each subsequent 28-day cycle (i.e. the intermittent schedule or IS). A previous cohort of monotherapy patients in the study was treated with ME-401 administered continuously once daily or were switched to the intermittent schedule in later cycles (i.e. the continuous schedule or CS).

The overall response rate in patients with r/r FL or r/r CLL/SLL was 83% (54/64); the overall response rate in patients with r/r FL was 80% (40/50) and it was 100% in patients with CLL/SLL (14/14). The overall response rate in patients ranged from 75% to 100% across all groups. Median progression free survival was not reached with a median follow up of approximately 9 months.

Evaluable Patients

FL

(N = 50)

CLL/SLL

(N = 14)*

Total

(N = 64)

All groups

40 (80%)

14 (100%)

54 (83%)

By treatment arm

ME-401 monotherapy

ME-401 + rituximab

30/38 (79%)

10/12 (83%)

11/11 (100%)

3/3 (100%)

41/49 (84%)

13/15 (87%)

By schedule

IS Group

CS Group

15/20 (75%)

25/30 (83%)

5/5 (100%)

9/9 (100%)

20/25 (80%)

34/39 (87%)

*IGHV unmutated in 11/13 CLL patients (85%) tested

ME-401 was generally well-tolerated and no grade 4 or grade 5 adverse events have been observed in the Phase 1b study. Among drug related grade 3 adverse events of special interest, the most common are diarrhea/colitis at 9.7% (3/31) on IS dosing and 20% (8/40) on CS dosing, and rash with none on IS dosing and 10% (4/40) on CS dosing.

The rate of the development of delayed, grade 3 adverse events was improved in patients on the intermittent dosing schedule. There were no isolated grade 3 elevations in ALT and AST; such elevations were transient and in each case were associated with grade 3 diarrhea or rash.

Grade 3 Drug Related Adverse Events of Special Interest

CS (n = 40)

N (%)

IS (n = 31)

N (%)

Diarrhea/Colitis

8 (20.0%)

3 (9.7%)

Rash, all types

4 (10.0%)

0

ALT/AST increased

3 (7.5%)

1 (3.2%)

Mucositis

1 (2.5%)

0

Pneumonia/Pneumonitis

5 (12.5%)

1 (3.2%)

About ME-401
ME-401 is an investigational oral phosphatidylinositol 3-kinase ("PI3K") delta inhibitor; PI3K delta is often overexpressed in cancer cells and plays a key role in the proliferation and survival of hematologic cancers. ME-401 displays high selectivity for the PI3K delta isoform and has distinct pharmaceutical properties from other PI3K delta inhibitors. It is being clinically evaluated in patients with various B-cell malignancies. An ongoing, global, Phase 2 study is evaluating the efficacy, safety, and tolerability of ME-401 as a single agent in patients with follicular lymphoma after failure of at least two prior systemic therapies including chemotherapy and an anti-CD20 antibody. The Phase 2 study is intended to support an accelerated approval new drug application with the U.S Food and Drug Administration.

ADC Therapeutics Presents Clinical Data on ADCT-402 and ADCT-301 in Subtypes of Relapsed or Refractory Lymphoma at the 15th International Conference on Malignant Lymphoma

On June 21, 2019 ADC Therapeutics, an oncology drug discovery and development company that specializes in the development of antibody drug conjugates (ADCs), presented data from subgroup analyses of its 183-patient Phase I clinical trial of ADCT-402 (loncastuximab tesirine) and 128-patient Phase I trial of ADCT-301 (camidanlumab tesirine), as well as preclinical data demonstrating the potential of both product candidates in combination with other therapies, at the 15th International Conference on Malignant Lymphoma (15-ICML) in Lugano, Switzerland (Press release, ADC Therapeutics, JUN 21, 2019, View Source [SID1234596059]).

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"The ADCT-402 data presented at 15-ICML demonstrate its signficant anti-tumor activity and manageable tolerability profile at doses greater than or equal to 120 μg /kg in patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL)," said John Radford, MD, FRCP, FMedSci, Professor of Medical Oncology at The University of Manchester and Director of Research at The Christie NHS Foundation Trust, Manchester, UK. "It is particularly encouraging to see the responses in older patients and patients with transformed or primary refractory disease, as in many cases these are very frail and sick patients who have not responded to multiple previous therapies. I believe ADCT-402 has the potential to become an important part of the treatment paradigm for patients with relapsed or refractory DLBCL, if approved, and look forward to the forthcoming interim results of the pivotal Phase II trial."

Regarding the ADCT-301 data, Graham P. Collins, MB, BS, DPhil, Consultant and Lymphoma Lead, Oxford University Hospitals, said, "The response rates we have observed in patients with relapsed or refractory Hodgkin lymphoma in the Phase I trial of ADCT-301 are very encouraging, as these patients have been heavily pretreated with a median of five prior therapies, including stem cell transplantation and highly active agents like brentuximab vedotin and checkpoint inhibitors. The data support further evaluation of ADCT-301 in a pivotal Phase II trial in relapsed or refractory Hodgkin lymphoma."

Chris Martin, PhD, Chief Executive Officer of ADC Therapeutics, added, "On the heels of these encouraging data, we look forward to completing enrollment in the pivotal 140-patient Phase II trial of ADCT-402 in patients with relapsed or refractory DLBCL and, if successful, preparing to file a potential Biologics License Application in the second half of 2020. In addition, based on the compelling data from our 128-patient Phase I trial of ADCT-301 and recent end of Phase I meeting with the U.S. Food and Drug Administration, we plan to start a pivotal Phase II trial in 100 patients with relapsed or refractory Hodgkin lymphoma in the coming months."

ADCT-402 Oral Presentations at ICML

Analysis of Efficacy and Safety of Loncastuximab Tesirine (ADCT-402) by Demographic and Clinical Characteristics in Relapsed/Refractory Diffuse Large B-Cell Lymphoma (Abstract 054)

Data were presented from Phase I clinical trial subgroup analyses of response to ADCT-402 at doses ≥120 μg/kg in 129 patients with relapsed or refractory (R/R) diffuse large B-cell lymphoma (DLBCL). As of the October 16, 2018 data cutoff, 129 patients were evaluable for safety and 127 patients were evaluable for efficacy.

Key findings from the oral presentation include:

Older patients had a higher overall response rate (ORR) than younger patients (≥ 75 years: 59.1%; 65-74 years: 52.8%; <65 years: 33.3%)
Patients with transformed disease had a higher ORR than those with de novo DLBCL (54.8% vs 39.6%)
Median duration of response (DoR) was longer for refractory patients than relapsed patients, and median DoR was comparable for patients to their most recent therapy vs relapsed patients
No difference in ORR was observed between patients who had received ≤3 lines vs >3 lines of prior therapy
The most common grade ≥3 treatment-emergent adverse events were: gamma-glutamyltransferase increased (20.2%), neutropenia (17.8%), neutrophil count decreased (14%), anaemia (11.6%), thrombocytopenia (11.6%) and platelet count decreased (10.9%)

The Antibody-Drug Conjugate (ADC) Loncastuximab Tesirine (ADCT-402) Targeting CD19 Shows Strong In Vitro Anti-Lymphoma Activity Both as Single Agents and In Combination (Abstract 084)

This preclinical study evaluated the activity of ADCT-402 as a single agent and in combination with approved drugs in lymphoma cell lines. The findings support the continued evaluation of ADCT-402 in ongoing clinical trials in patients with R/R DLBCL and other types of non-Hodgkin lymphoma.

Key findings from the oral presentation include:

ADCT-402 demonstrated significant activity in vitro in a wide panel of lymphoma cell lines and sensitivity to ADCT-402 was higher in B-cell lymphomas than T-cell lymphomas
ADCT-402 in vitro activity correlated with CD19 expression at both the cell surface and RNA level
When tested in combination with other drugs, ADCT-402 demonstrated strong synergy with BCL2 inhibitor venetoclax (4/4 cell lines), PI3K-delta inhibitor idelalisib (4/4 cell lines) and chemotherapy agent bendamustine (3/4 cell lines)

ADCT-301 Oral Presentation and Poster at ICML

Analysis of Clinical Determinants Driving Safety and Efficacy of Camidanlumab Tesirine (ADCT301, Cami) in Relapsed/Refractory (R/R) Classical Hodgkin Lymphoma (cHL) (Abstract 055)

Data were presented from Phase I clinical trial subgroup analyses of response to ADCT-301 in patients with R/R classical Hodgkin lymphoma (cHL). At the time of the data cutoff of April 14, 2019, 77 patients were evaluable for safety and 75 patients were evaluable for efficacy.

Key findings from the oral presentation include:

ORR for ADCT-301 45 μg/kg was 86.5% and ORR was high across all subgroups, suggesting significant anti-tumor activity across the R/R cHL population
The recommended dose for the pivotal Phase II trial of ADCT-301 in cHL is 45 μg/kg every three weeks (Q3W) dosed for two cycles, followed by 30 μg/kg Q3W to improve tolerability while maintaining anti-cancer activity
Previously reported cases of Guillain-Barré syndrome/radiculopathy did not appear related to prior checkpoint inhibitor exposure

The Anti-CD25 Antibody-Drug Conjugate Camidanlumab Tesirine (ADCT-301) Presents a Strong Preclinical Activity Both as Single Agent and In Combination in Lymphoma Cell Lines (Poster 270)

This preclinical study evaluated activity of ADCT-301 as a single agent in 57 lymphoma cell lines and in combination with select drugs in T-cell lymphoma-derived cell lines. The findings support the continued clinical development of ADCT-301 in Hodgkin lymphoma, T-cell lymphomas and other types of non-Hodgkin lymphoma, and identify potential agents for future ADCT-301 combination clinical trials.

Key findings from the poster include:

ADCT-301 in vitro activity was highly correlated with CD25 expression at both the cell surface and RNA level
When tested in combination with other drugs, ADCT-301 demonstrated strong synergy with the mTOR inhibitor everolimus (4/4 cell lines), PI3K inhibitor copanlisib (3/4 cell lines), BCL2 inhibitor venetoclax (3/4 cell lines) and HDAC inhibitor vorinostat (3/4 cell lines)
Jay Feingold, MD, PhD, Chief Medical Officer and Senior Vice President of Clinical Development at ADC Therapeutics, said, "Our presentations at 15-ICML represent the strong dataset we continue to amass for ADCT-402 and ADCT-301 in difficult-to-treat patients, both young and old, with subtypes of relapsed or refractory lymphoma, including DLBCL and Hodgkin lymphoma. The clinical activity we have observed in these populations, which include heavily pretreated patients with unfavorable genetics and primary refractory disease, increases our enthusiasm for the potential utility of ADCT-402 and ADCT-301 as single agents and in combination with other agents, if approved."

The three oral presentations and one poster will be available after 15-ICML under "Posters & Presentations" in the News & Media section of ADC Therapeutics’ web site at www.adctherapeutics.com.

About ADCT-402
ADCT-402 (loncastuximab tesirine) is an antibody drug conjugate (ADC) comprised of a humanized monoclonal antibody that binds to human CD19, conjugated through a linker to a pyrrolobenzodiazepine (PBD) dimer toxin. Once bound to a CD19-expressing cell, ADCT-402 is internalized into the cell where enzymes release the PBD-based warhead. CD19 is a clinically validated target for the treatment of B-cell malignancies. The PBD-based warhead has the ability to form highly cytotoxic DNA interstrand cross-links, blocking cell division and resulting in cell death. ADCT-402 is being evaluated in a pivotal Phase II clinical trial in patients with relapsed or refractory (R/R) diffuse large B-cell lymphoma (DLBCL) (NCT03589469), a Phase Ib trial in combination with ibrutinib in patients with R/R DLBCL or mantle cell lymphoma (MCL) (NCT03684694) and a Phase Ib trial in combination with durvalumab in patients with R/R DLBCL, MCL or follicular lymphoma (NCT03685344). The U.S. Food and Drug Administration granted orphan drug designation to ADCT-402 for the treatment of relapsed or refractory DLBCL and MCL.

About ADCT-301
ADCT-301 (camidanlumab tesirine) is an antibody drug conjugate (ADC) comprised of a monoclonal antibody that binds to CD25 (HuMax-TAC, licensed from Genmab A/S), conjugated to the pyrrolobenzodiazepine (PBD) dimer payload tesirine. Once bound to a CD25-expressing cell, ADCT-301 is internalized into the cell where enzymes release the PBD-based warhead. The intra-tumor release of its PBD warhead may cause bystander killing of neighboring tumor cells. In addition, the PBD warhead will trigger immunogenic cell death, which in turn will strengthen the immune response against tumor cells. ADCT-301 is being evaluated in ongoing Phase Ia/Ib clinical trials in patients with relapsed or refractory Hodgkin lymphoma and non-Hodgkin lymphoma (NCT02432235), as well as a Phase Ib clinical trial in solid tumors (NCT03621982). A pivotal Phase II clinical trial of ADCT-301 in 100 patients with relapsed or refractory Hodgkin lymphoma is expected to commence in 2019.