On October 1, 2018 InteRNA Technologies reported its results from a set of confirmatory in vitro and in vivo studies further validating the unique mechanism of action (MoA) of InteRNA’s lead microRNA drug candidate, INT-1B3, for the treatment of cancer (Press release, InteRNA Technologies, OCT 1, 2018, View Source [SID1234529688]). Most strikingly, the company was able to demonstrate that INT-1B3’s earlier reported long-term memory immune protection activity against re-challenge with tumor cells is cytotoxic CD8+ T cell-mediated. INT-1B3 is a lipid nanoparticle (LNP) formulated, chemically modified microRNA 193a-3p mimic, a known tumor-suppressor microRNA, that has been shown to induce immune-modulation of the tumor microenvironment, reduction of metastases development leading to improved animal survival, and pronounced long-term immunity with a good safety and tolerability profile. The data were presented in two posters at the 14th Annual Oligonucleotide Therapeutics Society (OTS) Meeting, held in Seattle, WA from September 30 – October 3, 2018.

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"These confirmatory results are consistent with the original preclinical proof-of-concept data we presented at the AACR (Free AACR Whitepaper) Annual Meeting this year and thereby serve as a fundamental validation of INT-1B3’s differentiated mechanism of action," said Dr. Roel Schaapveld, CEO of InteRNA. "It is also very exciting that we were able to demonstrate that the pronounced long-term anti-tumor immunity we have seen is CD8+ T cell-dependent which further clarifies a key aspect of these promising effects. We are convinced that INT-1B3, next to its potential in combination regimens, represents a unique and novel monotherapeutic opportunity in immuno-oncology and we look forward to evaluating its efficacy in cancer patients."

The data presented at the 14th Annual OTS Meeting confirm and expand on the preclinical data presented at AACR (Free AACR Whitepaper) in April 2018 as summarized in the following announcement http://bit.ly/2NnruRI.

In a syngeneic orthotopic mouse model of triple negative breast cancer (TNBC 4T1), systemic administration of INT-1B3 was proven to efficiently modulate the immunosuppressive tumor microenvironment. Upon resection of the primary tumors, this resulted in: 1) the inhibition of tumor re-growth, 2) reduction of distant (lung and intraperitoneal) metastases development with significant impact on animal survival, and 3) long-term immunity to newly injected 4T1 tumor cells in the absence of further drug treatment. Most notably, CD8+ T cell depletion greatly impacted protection of surviving INT-1B3-treated animals against such re-challenge with 4T1 tumor cells, suggesting a CD8+ T cell-dependent long-term immune protection. Furthermore, the results presented in a second poster verify that upon transfection in a wide panel of human tumor cell lines, the microRNA 193a-3p mimic was able to inhibit tumor cell proliferation and survival, modulate the tumor cell cycle, induce apoptosis and/or senescence and decrease tumor cell migration and invasion. In addition, and consistent with results in cell-based assays, significant anti-tumor efficacy of INT-1B3 was demonstrated in several human xenografts and in an extended panel of syngeneic subcutaneous mouse tumor models. Based on these results, INT-1B3 provides a novel and promising therapeutic approach in the immuno-oncology armamentarium.

MicroRNAs are naturally occurring small RNA interfering molecules which represent a part of the body’s arsenal to regulate gene expression, each targeting a specific set of genes that have gained recent attention as a novel therapeutic approach in a variety of disease states. MicroRNA 193a-3p specifically is a known tumor suppressor microRNA that is downregulated in many cancers. InteRNA’s formulated and chemically modified synthetic mimic combines anti-tumor activity with modulation of the immunosuppressive tumor microenvironment, and long-term immunity upon systemic delivery to cancer cells upregulating microRNA 193a-3p’s original function across the pathways involved in the initiation and progression of cancer and the evasion of the immune system in parallel.

The posters entitled "A novel synthetic miR-193a-3p mimic (INT-1B3) targeting multiple hallmarks of cancer reveals potential for therapeutic intervention in oncology" (poster #114) and "INT-1B3, a novel synthetic microRNA mimic and its monotherapy potential in immune-oncology armamentarium" (poster #63) as well as the original proof-of-concept data were presented by InteRNA’s Chief Executive Officer, Dr. Roel Schaapveld and Chief Development Officer, Dr. Michel Janicot and are available on InteRNA’s website through the following link:
View Source

On October 1, 2018 Adaptive Biotechnologies reported that the U.S. Food and Drug Administration (FDA) has granted De Novo designation for the clonoSEQ Assay to detect and monitor minimal residual disease (MRD) in patients with multiple myeloma (MM) and B-cell acute lymphoblastic leukemia (ALL) using DNA from a patient’s bone marrow sample (Press release, Adaptive Biotechnologies, OCT 1, 2018, View Source [SID1234529689]). The clearance of clonoSEQ marks several "firsts" for patients and for the FDA. The clonoSEQ Assay represents a first-in-class MRD assay that uses next-generation sequencing (NGS) technology to assess disease burden, representing an important additional use of NGS in cancer. clonoSEQ is the first and only assay to be cleared by the FDA for MRD assessment in any lymphoid cancer and the first FDA-cleared diagnostic assay powered by immunosequencing. It is also a major milestone for Adaptive Biotechnologies as the first regulatory clearance for the company’s proprietary (NGS) platform for immune system profiling.

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MRD refers to the small number of cancer cells that can remain in a patient’s body after treatment, which often cause no signs or symptoms but eventually can lead to recurrence of the disease. These residual cells can be present at very low levels and require highly sensitive tests to identify them. Even very small amounts of MRD can have a profound effect on treatment success and patient outcomes. A test that can reliably determine the presence and amount of residual disease at very low levels can be used by physicians in conjunction with other clinical information to predict treatment outcomes, guide management decisions and improve patient care.

"MRD testing provides patients with real-time insights about their response to therapy or the depth of their remission, therefore the MMRF is deeply committed to this important advancement in patient care," said Paul Giusti, president and chief executive officer, Multiple Myeloma Research Foundation (MMRF). "The sensitivity of the test is extremely important, as the number of cells remaining after treatment has been linked to patient outcomes. This clearance provides patients and physicians with access to a highly sensitive, standardized MRD test that can be an important tool in guiding treatment decisions."

There are more than 200,000 MM and ALL patients living in the U.S., and more than 35,000 new cases are diagnosed each year. The clonoSEQ Assay uses NGS to precisely identify and monitor MRD in these patients throughout treatment and remission, with greater sensitivity than other technologies for any given amount of bone marrow sample.1 Detecting MRD with deep sensitivity can be clinically informative for the many patients being treated for these cancers.

"The FDA clearance of clonoSEQ is an important advance for patients with MM and ALL and for the oncologists who care for them. This milestone underscores the importance of MRD as a predictor of patient outcomes," said Aaron Logan, associate professor, Division of Hematology and Blood and Marrow Transplant, UCSF. "Quantification of MRD should be standard practice to assess response to treatment, monitor disease progression and direct patient care. It is thus essential to have an MRD assay that meets regulatory standards and can accurately and reliably measure and track disease burden over time."

For patients who achieve complete response to cancer treatment by traditional response criteria, the presence or absence of MRD has been demonstrated to have a significant relationship with patient outcomes.2 For this reason, many pharmaceutical companies have begun using MRD as a clinically meaningful endpoint to evaluate efficacy and to guide use of their therapies.

"This year has been historic for the field of hematology, with a paradigm-shifting FDA decision to approve the first therapy, BLINCYTO, based on the MRD status of a patient with ALL, validating the clinical relevance of MRD in ALL as a clinically meaningful endpoint," said Greg Friberg, M.D., vice president, Global Development, Oncology at Amgen. "Now, physicians and patients will have access to the first FDA-cleared MRD assay, providing them with another important tool to make informed decisions about treatments to help achieve MRD negativity. We look forward to continuing our collaboration with Adaptive Biotechnologies to further explore MRD and deliver on our mission to serve patients through transformative science."

The recent FDA review and approval of drugs with MRD included as a clinical endpoint, as well as the agency’s inclusion of MRD on the recently released list of surrogate endpoints that can serve as the basis of drug approvals, demonstrate the clinical actionability of MRD and reinforce the need for an accurate and standardized, FDA-cleared method like clonoSEQ.3,4

"The clearance of the clonoSEQ Assay is an exciting advance for MM and ALL patients and physicians; as MRD is increasingly used to inform treatment decisions, the importance of having an accurate and standardized assessment method becomes paramount," said Chad Robins, chief executive officer and co-founder of Adaptive Biotechnologies. "NGS MRD testing is already part of National Comprehensive Cancer Network (NCCN) treatment guidelines for patients with MM, ALL, and CLL, and clonoSEQ is already in use for patient management in the majority of NCCN cancer centers, further demonstrating the clinical importance of MRD and acceptance of NGS MRD testing by the oncology community. Adaptive is working diligently with public and private payers to make clonoSEQ broadly available to patients in need."

About Minimal Residual Disease

Minimal residual disease (MRD), also referred to as measurable residual disease, refers to cancer cells that remain in the body after treatment for patients with lymphoid cancers. These cells can be present at levels undetectable by traditional morphologic methods, microscopic examination of blood, or a bone marrow or a lymph node biopsy.

MRD is used by physicians to detect and monitor disease burden in patients and to inform their treatment decisions. Clinical practice guidelines recommend assessing MRD at multiple time points during treatment and maintenance in MM and ALL, and guidelines for both diseases include NGS as a recommended testing method.5,6 The prognostic value of MRD assessment has been demonstrated in multiple lymphoid cancers.7,8 Controlled trials have shown that even small amounts of disease are profoundly significant for predicting a patient’s long-term clinical outcomes.1,9,10,11,12 Therefore, highly sensitive, standardized molecular technologies are needed for reliable detection of MRD.

Measurement of MRD is currently being evaluated as a way to measure efficacy in drug trials, with the potential to expedite the approval of emerging therapies.13

About the clonoSEQ Assay

The Adaptive Biotechnologies clonoSEQ Assay has been granted De Novo designation by the FDA as an in vitro diagnostic (IVD) to detect and monitor minimal residual disease (MRD) in patients with multiple myeloma (MM) and B-cell acute lymphoblastic leukemia (ALL) using DNA from bone marrow samples. It identifies and quantifies specific DNA sequences found in malignant cells, allowing clinicians to monitor patients for changes in disease burden during and after treatment. This robust assay provides sensitive and accurate measurement of residual disease that allows physicians to predict patient outcomes, assess response to therapy over time, monitor patients during remission and detect potential relapse. The clonoSEQ Assay is a single-site assay performed at Adaptive Biotechnologies. It is also available as a CLIA-regulated laboratory developed test (LDT) service for use in other lymphoid cancers.

clonoSEQ was reviewed under the FDA’s De Novo premarket review pathway, a regulatory pathway for some low- to moderate-risk novel devices for which there is no legally marketed predicate device.

For important information about the FDA-cleared uses of clonoSEQ, including the full intended use, limitations, and detailed performance characteristics, please visit www.clonoSEQ.com/technical-summary.

On September 30, 2018 Tocagen Inc. (Nasdaq: TOCA), a clinical-stage, cancer-selective gene therapy company, today is presenting data describing the tumor microenvironment and immunogenicity of Toca 511 (vocimagene amiretrorepvec) & Toca FC (flucytosine, extended-release) in patients with solid tumor malignancies at the International Cancer Immunotherapy Conference (CIMT) (Free CIMT Whitepaper) hosted by The Cancer Research Institute (CRI), the Association for Cancer Immunotherapy (CIMT) (Free CIMT Whitepaper), the European Academy of Tumor Immunology (EATI), and the American Association for Cancer Research (AACR) (Free AACR Whitepaper) in New York City (Press release, Tocagen, SEP 30, 2018, View Source;p=RssLanding&cat=news&id=2369481 [SID1234529699]). The lead author is Jaime Merchan, M.D., director, Phase 1 clinical trials program at Sylvester Comprehensive Cancer Center; associate professor of medicine at the University of Miami Miller School of Medicine.

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The poster describes data available as of August 31st for 20 patients with advanced solid tumors, including colorectal, sarcoma, pancreas and non-small cell lung cancer, treated with intravenous Toca 511 followed by oral Toca FC in the Phase 1b Toca 6 clinical trial. Among these patients, 15 also received Toca 511 via intratumoral administration.

In this preliminary analysis of immune activation in patients with advanced solid tumors, analysis of peripheral blood shows immune cell modulation that is consistent with what has been observed in preclinical studies and in patients with recurrent high grade glioma treated with Toca 511 & Toca FC in previous clinical trials. In addition, available tumor samples from three patients show Toca 511 infected both "hot" (T cells present) and "cold" (T cells low or absent) areas of metastatic tumor, suggesting Toca 511 can penetrate multiple tumor microenvironments. Toca 511 & Toca FC treatment was well tolerated.

"The encouraging preliminary immune activity data from the Toca 6 trial continue to support the proposed mechanism of action for Toca 511 & Toca FC and its potentbiial in the treatment of multiple cancers," said Asha Das, M.D., chief medical officer of Tocagen. "We look forward to advancing expansion opportunities for our lead product in patients with solid tumors."

CRI-CIMT-EATI-AACR Abstract/Poster Number: A018
Abstract Title: Effects of Toca 511 & Toca FC on tumor microenvironment and peripheral blood populations in patients with advanced malignancies
Date: Sunday, September 30, 2018
Time: 11:45 a.m. – 2:15 p.m. ET
The poster is available on Tocagen’s website.

About Toca 6
Toca 6 is a multi-center, open-label Phase 1b study evaluating Toca 511 & Toca FC in patients with advanced solid tumors. The study will evaluate the safety and presence of Toca 511 genes in tumors of patients with widely disseminated disease, immunologic activity in blood and tumor, and clinical activity such as tumor response and clinical benefit. More information can be found at www.tocagen.com/toca6 or by searching clinicaltrials.gov using the clinical trial identifier NCT02576665.

About Toca 511 & Toca FC
Tocagen’s lead product candidate is a two-part cancer-selective immunotherapy comprising an investigational biologic, Toca 511, and an investigational small molecule, Toca FC. Toca 511 is a retroviral replicating vector (RRV) that selectively infects cancer cells and delivers a gene for the enzyme, cytosine deaminase (CD). Through this targeted delivery, only infected cancer cells carry the CD gene and produce CD. Toca FC is an orally administered prodrug, 5-fluorocytosine (5-FC), which is converted into an anti-cancer drug, 5-fluorouracil (5-FU), when it encounters CD. 5-FU kills cancer cells and immune-suppressive myeloid cells resulting in anti-cancer immune activation and subsequent tumor killing.

On October 29, 2018 Euronext Paris: FR0010331421 – IPH), reported new data from the Phase I clinical trial of IPH4102 in patients with relapsed/refractory cutaneous T-cell lymphomas (CTCL) (Press release, Innate Pharma, SEP 29, 2018, View Source [SID1234530303]). The data, including longer follow up for patients treated in the dose-escalation and observations from an additional patient cohort, will be presented today at the EORTC Cutaneous Lymphoma Group meeting in St. Gallen, Switzerland, by Pr Martine Bagot, Principal Investigator and Head of the Dermatology Department at the Saint-Louis Hospital, Paris. IPH4102 is Innate Pharma’s wholly-owned first-in-class anti-KIR3DL2 antibody, designed for treatment of T-cell lymphoma.

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"These data support the positive trends observed in the dose-escalation part of the trial and demonstrated a high response rate and long progression-free survival for these heavily pretreated CTCL patients, a majority being Sézary syndrome," commented Pierre Dodion, Chief Medical Officer of Innate Pharma. "Additionally, these data will serve as a basis for the initiation of a broader Phase II clinical program in Sézary syndrome and other subtypes of T-cell lymphomas. We look forward to providing more insight into the data and subsequent clinical development plans in the near future."

As of June 28, 2018, a total of 44 patients with relapsed/refractory CTCL were evaluable for safety and clinical activity. The study consisted of two parts: a dose-escalation (n=25) and a cohort expansion (n=19). Patients received a median of 3 prior systemic therapies. IPH4102 demonstrated a favorable safety profile and was well-tolerated. The study showed clinical activity that was demonstrated by a high response rate and long progression free survival.

In the total study population, the objective response rate (ORR) was 36% and median duration of response (DOR) and progression free survival (PFS) were 13.8 and 8.2 months, respectively. Sézary syndrome (SS) subset patients treated in the dose-escalation part (n=20) now show median PFS of close to 1 year. At the cut-off date of June 28, 2018, median follow-up was 12.7 months and nine patients were still ongoing treatment.

Better outcomes were observed in patients without evidence of histologic large cell transformation (LCT) (n=29); these patients achieved an ORR of 51.7% and PFS of 12.8 months. LCT is present in approximatively 10% of all Mycosis fungoides/Sézary syndrome patients* and is associated with poorer prognosis and shorter survival using currently available therapies.

"This patient population remains a high unmet medical need as they continue to progress through several lines of treatments," commented Pr Martine Bagot, Principal Investigator. "The patients with complete response, partial response and even those with stable disease showed an improvement in quality of life parameters overtime including pruritus. IPH4102’s encouraging clinical activity provides substantial support to explore its potential therapeutic benefits not only in SS patients but also in other T cell lymphoma patient populations. Together with a favorable safety profile, IPH4102 could emerge as a key therapeutic option in aggressive T-cell lymphomas."

On September 28, 2018 Regeneron Pharmaceuticals, Inc. (NASDAQ : REGN) and Sanofi reported that the U.S. Food and Drug Administration (FDA) has approved Libtayo (cemiplimab-rwlc) for the treatment of patients with metastatic cutaneous squamous cell carcinoma (CSCC) or locally advanced CSCC who are not candidates for curative surgery or curative radiation (Press release, Regeneron, SEP 28, 2018, View Source [SID1234529652]). Libtayo is a fully-human monoclonal antibody targeting the immune checkpoint receptor PD-1 (programmed cell death protein-1) and is the first and only treatment specifically approved and available for advanced CSCC in the U.S.

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"Today’s FDA decision is great news for patients with advanced CSCC, who previously had no approved treatment options. This is especially true because these patients are no longer candidates for curative surgery or radiation," said Michael R. Migden, M.D., a lead investigator in the pivotal CSCC clinical program and Professor in the Departments of Dermatology and Head and Neck Surgery at The University of Texas MD Anderson Cancer Center. "Libtayo is an important new immunotherapy option for U.S. physicians to help address a significant unmet need in this patient group."

CSCC is the second most common form of skin cancer and is responsible for an estimated 7,000 deaths each year in the U.S. It currently accounts for approximately 20% of all skin cancers in the U.S., with the number of newly diagnosed cases expected to rise annually. When CSCC invades deeper layers of the skin or adjacent tissues, it is categorized as locally advanced. Once it spreads to other distant parts of the body, it is considered metastatic.

"By following the science, we identified early on that advanced CSCC was a promising target for investigation with Libtayo," said Israel Lowy, M.D., Ph.D., Vice President of Global Clinical Development and Head of Translational Science and Clinical Oncology, Regeneron. "We are proud to offer patients in the U.S. this first and only treatment for advanced CSCC and remain focused on advancing our clinical research investigating Libtayo as a potential monotherapy and combination therapy in other cancer types."

Libtayo was evaluated by the FDA under Priority Review, which is reserved for medicines that represent significant improvements in safety or efficacy in treating serious conditions, and in 2017 was granted Breakthrough Therapy Designation status for advanced CSCC. Breakthrough Therapy Designation was created to expedite the development and review of drugs that have the potential for substantial improvement in the treatment of serious or life-threatening conditions.

"In the U.S., CSCC accounts for one in five skin cancers, and the number of new diagnoses is increasing," said Olivier Brandicourt, M.D., Chief Executive Officer, Sanofi. "We believe Libtayo has the potential to make a difference for U.S. patients with advanced CSCC, as it helps to fill a critical gap in treatment options. We are committed to bringing this important medicine to patients in other countries around the world as quickly as possible."

The recommended dosage of Libtayo is 350 mg administered as an intravenous infusion over 30 minutes every three weeks, until disease progression or unacceptable toxicity. Libtayo is available as a single-dose 350 mg vial.

Libtayo is expected to provide significant value for patients with advanced CSCC and those who care for them. The U.S. list price, or wholesale acquisition cost, is $9,100 per three-week treatment cycle. Actual costs to patients are generally anticipated to be lower as the list price does not reflect insurance coverage, copay support or financial assistance from patient support programs.

Regeneron and Sanofi are committed to helping U.S. patients who have been prescribed Libtayo access their medication. The companies have launched Libtayo Surround to help patients understand how Libtayo may be covered by their health insurance plans. Additionally, Libtayo Surround is designed to help eligible patients who need financial assistance with their prescription. For more information, please call 1-877-LIBTAYO (1-877-542-8296), Option 1, or visit www.Libtayo.com.

Regeneron and Sanofi Genzyme, the specialty care global business unit of Sanofi, will market Libtayo jointly in the U.S. Libtayo was invented by Regeneron using the company’s proprietary VelocImmune technology that yields optimized fully-human antibodies.

Pivotal Advanced CSCC Clinical Program and Results
The FDA approval of Libtayo was based on a combined analysis of data from an open-label, multi-center, non-randomized Phase 2 trial known as EMPOWER-CSCC-1 (Study 1540) and two advanced CSCC expansion cohorts from a multi-center, open-label, non-randomized Phase 1 trial (Study 1423). Together, the trials represent the largest prospective data set in advanced CSCC.

The major efficacy outcome measures for the integrated analysis of EMPOWER-CSCC-1 and the two CSCC expansion cohorts were confirmed objective response rate (ORR), as assessed by independent central review (ICR), and ICR-assessed duration of response (DOR). The efficacy analysis was conducted when all patients had the opportunity for at least six months of follow-up.

Combined efficacy results (n=108) from EMPOWER-CSCC-1 and the two advanced CSCC expansion cohorts from the Phase 1 trial were as follows:

Efficacy Endpoints*

Metastatic

CSCC

(n = 75)

Locally Advanced

CSCC

(n= 33)

Combined

CSCC

(n = 108)

Confirmed ORR

ORR
(95% confidence interval [CI])

47%

(35, 59)

49%

(31, 67)

47%

(38, 57)

Complete response rate†

5%

0%

4%

Partial response rate

41%

49%

44%

DOR

Range in months

3-15+

1-13+

1-15+

Patients with DOR ≥ 6 months, n (%)

21 (60%)

10 (63%)

31 (61%)

+Denotes ongoing at last assessment
*Median duration of follow-up: metastatic CSCC: 8.1 months; locally advanced CSCC: 10.2 months; combined CSCC: 8.9 months
†Only includes patients with complete healing of prior cutaneous involvement; locally advanced CSCC patients in EMPOWER-CSCC-1 required biopsy to confirm complete response.

For the combined safety analysis (n=163) of EMPOWER-CSCC-1 and the two advanced CSCC expansion cohorts, the most common adverse reactions reported were fatigue (29%), rash (25%) and diarrhea (22%). Libtayo was permanently discontinued due to adverse reactions in 5% of patients; adverse reactions resulting in permanent discontinuation were pneumonitis, autoimmune myocarditis, hepatitis, aseptic meningitis, complex regional pain syndrome, cough and muscular weakness. Serious adverse reactions (SAEs) occurred in 28% of patients. SAEs that occurred in at least 2% of patients were cellulitis, sepsis, pneumonia, pneumonitis and urinary tract infection.

Cemiplimab-rwlc Development Program Overview
Cemiplimab-rwlc is being jointly developed by Regeneron and Sanofi under a global collaboration agreement.

In April 2018, the European Medicines Agency (EMA) accepted for review the Marketing Authorization Application for Libtayo for the treatment of patients with metastatic CSCC or with locally advanced CSCC who are not candidates for surgery. The EMA review process is anticipated to be complete in the first half of 2019. There are currently no EMA-approved treatments for advanced CSCC. Regulatory applications in additional countries are also being considered for submission later in 2018.

In addition to advanced CSCC, cemiplimab-rwlc is being investigated in trials in non-small cell lung cancer, basal cell carcinoma, and cervical cancer along with trials in squamous cell carcinoma of the head and neck, melanoma, colorectal cancer, prostate cancer, multiple myeloma, Hodgkin lymphoma and non-Hodgkin lymphoma. These potential uses are investigational, and their safety and efficacy have not been evaluated by any regulatory authority.

IMPORTANT SAFETY INFORMATION AND INDICATION FOR U.S. PATIENTS

What is the most important information I should know about Libtayo?

Libtayo is a medicine that may treat a type of skin cancer by working with your immune system. Libtayo can cause your immune system to attack normal organs and tissues in any area of your body and can affect the way they work. These problems can sometimes become severe or life-threatening and can lead to death. These problems may happen anytime during treatment or even after your treatment has ended.

Call or see your healthcare provider right away if you develop any symptoms of the following problems or these symptoms get worse:

Lung problems (pneumonitis). Signs and symptoms of pneumonitis may include new or worsening cough, shortness of breath, and chest pain.
Intestinal problems (colitis) that can lead to tears or holes in your intestine. Signs and symptoms of colitis may include diarrhea (loose stools) or more frequent bowel movements than usual; stools that are black, tarry, or sticky or that have blood or mucus; and severe stomach-area (abdomen) pain or tenderness.
Liver problems (hepatitis). Signs and symptoms of hepatitis may include yellowing of your skin or the whites of your eyes, severe nausea or vomiting, pain on the right side of your stomach area (abdomen), drowsiness, dark urine (tea colored), bleeding or bruising more easily than normal, and feeling less hungry than usual.
Hormone gland problems (especially the adrenal glands, pituitary, thyroid and pancreas). Signs and symptoms that your hormone glands are not working properly may include headaches that will not go away or unusual headaches, rapid heartbeat, increased sweating, extreme tiredness, weight gain or weight loss, dizziness or fainting, feeling more hungry or thirsty than usual, hair loss, feeling cold, constipation, deeper voice, very low blood pressure, urinating more often than usual, nausea or vomiting, stomach-area (abdomen) pain, and changes in mood or behavior, such as decreased sex drive, irritability, or forgetfulness.
Kidney problems, including nephritis and kidney failure. Signs of these problems may include decrease in your amount of urine, blood in your urine, swelling in your ankles, and loss of appetite.
Skin problems. Signs of these problems may include rash, itching, skin blistering, and painful sores or ulcers in the mouth, nose, throat, or genital area.
Problems in other organs. Signs of these problems may include headache, tiredness or weakness, sleepiness, changes in heartbeat (such as beating fast, seeming to skip a beat, or a pounding sensation), confusion, fever, muscle weakness, balance problems, nausea, vomiting, stiff neck, memory problems, seizures (encephalitis), swollen lymph nodes, rash or tender lumps on skin, cough, shortness of breath, vision changes, or eye pain (sarcoidosis), seeing or hearing things that are not there (hallucinations), severe muscle weakness, low red blood cells (anemia), bruises on the skin or bleeding, and changes in eyesight.
Rejection of a transplanted organ. Your doctor should tell you what signs and symptoms you should report and monitor you, depending on the type of organ transplant that you have had.
Infusion (IV) reactions that can sometimes be severe and life-threatening. Signs of these problems may include chills or shaking, itching or rash, flushing, shortness of breath or wheezing, dizziness, fever, feeling of passing out, back or neck pain, and facial swelling.
Getting medical treatment right away may help keep these problems from becoming more serious.

Your healthcare provider will check you for these problems during your treatment with Libtayo. Your healthcare provider may treat you with corticosteroid or hormone replacement medicines. Your healthcare provider may delay or completely stop treatment if you have severe side effects.

Before you receive Libtayo, tell your healthcare provider about all your medical conditions, including if you:

have immune system problems such as Crohn’s disease, ulcerative colitis, or lupus;
have had an organ transplant;
have lung or breathing problems;
have liver or kidney problems;
have diabetes;
are pregnant or plan to become pregnant; Libtayo can harm your unborn babyFemales who are able to become pregnant:
Your healthcare provider will give you a pregnancy test before you start treatment.
You should use an effective method of birth control during your treatment and for at least 4 months after your last dose of Libtayo. Talk with your healthcare provider about birth control methods that you can use during this time.
Tell your healthcare provider right away if you become pregnant or think you may be pregnant during treatment with Libtayo.
are breastfeeding or plan to breastfeed. It is not known if Libtayo passes into your breast milk. Do not breastfeed during treatment and for at least 4 months after the last dose of Libtayo.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

The most common side effects of Libtayo include tiredness, rash, and diarrhea. These are not all the possible side effects of Libtayo. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects to Regeneron Pharmaceuticals and Sanofi at 1-877-542-8296.

Please see accompanying full Prescribing Information, including Medication Guide.

What is Libtayo?

Libtayo is a prescription medicine used to treat people with a type of skin cancer called cutaneous squamous cell carcinoma (CSCC) that has spread or cannot be cured by surgery or radiation.