Celgene and LYSARC Provide Update on the Phase III ‘REMARC’ Study of REVLIMID® Maintenance Treatment in Patients with Diffuse Large B-Cell Lymphoma Responding to First-Line R-CHOP Therapy

On July 25, 2016 Celgene Corporation (NASDAQ: CELG) and the Lymphoma Study Association (LYSA) reported that the Lymphoma Academic Research Organisation (LYSARC) reported initial data from a phase III, randomized, double-blind, international clinical study (REMARC) (Press release, Celgene, JUL 25, 2016, View Source [SID:1234514026]). This investigational study evaluated maintenance therapy with REVLIMID (lenalidomide) compared with placebo in diffuse large B-cell lymphoma (DLBCL) patients responding to first-line rituximab plus CHOP chemotherapy (R-CHOP) induction therapy. LYSARC sponsored the study under a Clinical Trial Agreement with Celgene.

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REMARC achieved the primary endpoint of a statistically significant improvement in progression-free survival for patients receiving REVLIMID. The interim analysis of overall survival, a key secondary endpoint, showed no benefit in the REVLIMID arm. Based upon these interim results, Celgene does not currently plan to seek approval for this indication.

"We thank the patients and their families for participating in the REMARC trial and look forward to presenting these important data at a future hematology conference," said Bertrand Coiffier, Professor of Hematology, Hospices de Lyon and University Claude Bernard Lyon 1 and Principal Investigator, REMARC.

"We are continuing to partner with LYSA to complete the analyses of the REMARC study," said Michael Pehl, President Hematology and Oncology of Celgene. "We remain committed to finishing the four ongoing phase III trials evaluating REVLIMID and are confident about its potential as a treatment option across different settings in lymphoma."

A Broad Phase III Program in NHL Underway; Data from Additional Trials Expected in 2017

The REMARC study is part of a broad research program at Celgene focused on multiple areas of non-Hodgkin lymphoma. In addition to the REMARC study, REVLIMID is also being evaluated in:

RELEVANCE, a combination with rituximab in previously untreated follicular lymphoma;
AUGMENT, a combination with rituximab in relapsed/refractory follicular and marginal zone lymphoma;
MAGNIFY, a combination with rituximab in relapsed/refractory follicular, marginal zone and mantle cell lymphoma; and,
ROBUST, a combination with R-CHOP in previously untreated ABC-subtype DLBCL.
Data from RELEVANCE and AUGMENT are expected in the first and second half of 2017, respectively. Beyond REVLIMID, Celgene is also exploring multiple clinical candidates in non-Hodgkin lymphomas and T-cell lymphomas.

REVLIMID is not approved for use in DLBCL.

About REMARC

REMARC is an international, multicentre, randomized, double-blind, placebo-controlled phase III study designed to explore the effect of maintenance therapy with REVLIMID (lenalidomide) versus placebo on progression-free survival (PFS) in 650 patients treated with R-CHOP responding to induction therapy. Patients in REMARC had received at least 6 and up to 8 cycles of the R-CHOP 14 or R-CHOP 21 regimen or 6 R-CHOP-14 or -21 completed by 2 cycles of rituximab alone in accordance to local preferences. Evaluation of the response to R-CHOP was in accordance with Revised Response Criteria for Malignant Lymphoma (2007). The primary endpoint of the study was progression-free survival. The secondary endpoints of the study included overall survival, event-free survival, response at the end of maintenance, improvement in response and safety.

About REVLIMID

In the United States, REVLIMID is approved in combination with dexamethasone for the treatment of patients with multiple myeloma. REVLIMID is also approved in combination with dexamethasone for the treatment of patients with multiple myeloma who have received at least one prior therapy in nearly 70 countries, encompassing Europe, the Americas, the Middle East and Asia, and in combination with dexamethasone for the treatment of patients whose disease has progressed after one therapy in Australia and New Zealand.

REVLIMID is also approved in the United States, Canada, Switzerland, Australia, New Zealand and several Latin American countries, as well as Malaysia and Israel, for transfusion-dependent anemia due to low- or intermediate-1-risk myelodysplastic syndromes (MDS) associated with a deletion 5q cytogenetic abnormality with or without additional cytogenetic abnormalities and in Europe for the treatment of patients with transfusion-dependent anemia due to low- or intermediate-1-risk MDS associated with an isolated deletion 5q cytogenetic abnormality when other therapeutic options are insufficient or inadequate.

In addition, REVLIMID is approved in the United States for the treatment of patients with mantle cell lymphoma (MCL) whose disease has relapsed or progressed after two prior therapies, one of which included bortezomib.

U.S. Regulatory Information for REVLIMID

REVLIMID (lenalidomide) in combination with dexamethasone (dex) is indicated for the treatment of patients with multiple myeloma (MM)

REVLIMID is indicated for the treatment of patients with transfusion-dependent anemia due to low-or intermediate-1-risk myelodysplastic syndromes (MDS) associated with a deletion 5q cytogenetic abnormality with or without additional cytogenetic abnormalities

REVLIMID is indicated for the treatment of patients with mantle cell lymphoma (MCL) whose disease has relapsed or progressed after two prior therapies, one of which included bortezomib

REVLIMID is not indicated and is not recommended for the treatment of patients with chronic lymphocytic leukemia (CLL) outside of controlled clinical trials

Important Safety Information
WARNING: EMBRYO-FETAL TOXICITY, HEMATOLOGIC TOXICITY, and VENOUS and ARTERIAL THROMBOEMBOLISM

Embryo-Fetal Toxicity
Do not use REVLIMID during pregnancy. Lenalidomide, a thalidomide analogue, caused limb abnormalities in a developmental monkey study. Thalidomide is a known human teratogen that causes severe life-threatening human birth defects. If lenalidomide is used during pregnancy, it may cause birth defects or embryo-fetal death. In females of reproductive potential, obtain 2 negative pregnancy tests before starting REVLIMID treatment. Females of reproductive potential must use 2 forms of contraception or continuously abstain from heterosexual sex during and for 4 weeks after REVLIMID treatment. To avoid embryo-fetal exposure to lenalidomide, REVLIMID is only available through a restricted distribution program, the REVLIMID REMS program (formerly known as the "RevAssist" program).

Information about the REVLIMID REMS program is available at www.celgeneriskmanagement.com or by calling the manufacturer’s toll-free number 1-888-423-5436.

Hematologic Toxicity (Neutropenia and Thrombocytopenia)
REVLIMID can cause significant neutropenia and thrombocytopenia. Eighty percent of patients with del 5q MDS had to have a dose delay/reduction during the major study. Thirty-four percent of patients had to have a second dose delay/reduction. Grade 3 or 4 hematologic toxicity was seen in 80% of patients enrolled in the study. Patients on therapy for del 5q MDS should have their complete blood counts monitored weekly for the first 8 weeks of therapy and at least monthly thereafter. Patients may require dose interruption and/or reduction. Patients may require use of blood product support and/or growth factors.

Venous and Arterial Thromboembolism
REVLIMID has demonstrated a significantly increased risk of deep vein thrombosis (DVT) and pulmonary embolism (PE), as well as risk of myocardial infarction and stroke in patients with MM who were treated with REVLIMID and dexamethasone therapy. Monitor for and advise patients about signs and symptoms of thromboembolism. Advise patients to seek immediate medical care if they develop symptoms such as shortness of breath, chest pain, or arm or leg swelling. Thromboprophylaxis is recommended and the choice of regimen should be based on an assessment of the patient’s underlying risks.

CONTRAINDICATIONS

Pregnancy: REVLIMID can cause fetal harm when administered to a pregnant female and is contraindicated in females who are pregnant. If this drug is used during pregnancy or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus

Allergic Reactions: REVLIMID is contraindicated in patients who have demonstrated hypersensitivity (e.g., angioedema, Stevens-Johnson syndrome, toxic epidermal necrolysis) to lenalidomide

WARNINGS AND PRECAUTIONS

Embryo-Fetal Toxicity: See Boxed WARNINGS

Females of Reproductive Potential: See Boxed WARNINGS
Males: Lenalidomide is present in the semen of patients receiving the drug. Males must always use a latex or synthetic condom during any sexual contact with females of reproductive potential while taking REVLIMID and for up to 28 days after discontinuing REVLIMID, even if they have undergone a successful vasectomy. Male patients taking REVLIMID must not donate sperm
Blood Donation: Patients must not donate blood during treatment with REVLIMID and for 1 month following discontinuation of the drug because the blood might be given to a pregnant female patient whose fetus must not be exposed to REVLIMID
REVLIMID REMS Program: See Boxed WARNINGS: Prescribers and pharmacies must be certified with the REVLIMID REMS program by enrolling and complying with the REMS requirements; pharmacies must only dispense to patients who are authorized to receive REVLIMID. Patients must sign a Patient-Physician Agreement Form and comply with REMS requirements; female patients of reproductive potential who are not pregnant must comply with the pregnancy testing and contraception requirements and males must comply with contraception requirements

Hematologic Toxicity: REVLIMID can cause significant neutropenia and thrombocytopenia. Monitor patients with neutropenia for signs of infection. Advise patients to observe for bleeding or bruising, especially with use of concomitant medications that may increase risk of bleeding. MM: Patients taking REVLIMID/dex should have their complete blood counts (CBC) assessed every 7 days for the first 2 cycles, on days 1 and 15 of cycle 3, and every 28 days thereafter. MDS: Patients on therapy for del 5q MDS should have their complete blood counts monitored weekly for the first 8 weeks of therapy and at least monthly thereafter. Patients may require dose interruption and/or dose reduction. Please see the Black Box WARNINGS for further information. MCL: Patients taking REVLIMID for MCL should have their CBCs monitored weekly for the first cycle (28 days), every 2 weeks during cycles 2-4, and then monthly thereafter. Patients may require dose interruption and/or dose reduction

Venous and Arterial Thromboembolism: See Boxed WARNINGS: Venous thromboembolic events (DVT and PE) and arterial thromboses (MI and CVA) are increased in patients treated with REVLIMID. Patients with known risk factors, including prior thrombosis, may be at greater risk and actions should be taken to try to minimize all modifiable factors (e.g., hyperlipidemia, hypertension, smoking). Thromboprophylaxis is recommended and regimen is based on patients underlying risks. ESAs and estrogens may further increase the risk of thrombosis and their use should be based on a benefit-risk decision

Increased Mortality in Patients With CLL: In a clinical trial in the first line treatment of patients with CLL, single agent REVLIMID therapy increased the risk of death as compared to single agent chlorambucil. Serious adverse cardiovascular reactions, including atrial fibrillation, myocardial infarction, and cardiac failure, occurred more frequently in the REVLIMID arm. REVLIMID is not indicated and not recommended for use in CLL outside of controlled clinical trials

Second Primary Malignancies (SPM): In clinical trials in patients with MM receiving REVLIMID, an increase of invasive SPM notably AML and MDS have been observed. Monitor patients for the development of SPMs. Take into account both the potential benefit of REVLIMID and risk of SPMs when considering treatment

Hepatotoxicity: Hepatic failure, including fatal cases, has occurred in patients treated with REVLIMID/dex. Pre-existing viral liver disease, elevated baseline liver enzymes, and concomitant medications may be risk factors. Monitor liver enzymes periodically. Stop REVLIMID upon elevation of liver enzymes. After return to baseline values, treatment at a lower dose may be considered

Allergic Reactions: Angioedema and serious dermatologic reactions including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) have been reported. These events can be fatal. Patients with a prior history of Grade 4 rash associated with thalidomide treatment should not receive REVLIMID. REVLIMID interruption or discontinuation should be considered for Grade 2-3 skin rash. REVLIMID must be discontinued for angioedema, Grade 4 rash, exfoliative or bullous rash, or if SJS or TEN is suspected and should not be resumed following discontinuation for these reactions. REVLIMID capsules contain lactose; risk-benefit of treatment should be evaluated in patients with lactose intolerance

Tumor Lysis Syndrome (TLS): Fatal instances of TLS have been reported during treatment with lenalidomide. The patients at risk of TLS are those with high tumor burden prior to treatment. These patients should be monitored closely and appropriate precautions taken

Tumor Flare Reaction (TFR): TFR has occurred during investigational use of lenalidomide for CLL and lymphoma. Monitoring and evaluation of TFR is recommended in patients with MCL. Tumor flare may mimic the progression of disease (PD). In patients with Grade 3 or 4 TFR, it is recommended to withhold treatment with REVLIMID until TFR resolves to ≤ Grade 1. REVLIMID may be continued in patients with Grade 1 and 2 TFR without interruption or modification, at the physician’s discretion

Impaired Stem Cell Mobilization: A decrease in the number of CD34+ cells collected after treatment ( > 4 cycles) with REVLIMID has been reported. Consider early referral to transplant center to optimize timing of the stem cell collection

ADVERSE REACTIONS

Multiple Myeloma

In newly diagnosed: The most frequently reported Grade 3 or 4 reactions included neutropenia, anemia, thrombocytopenia, pneumonia, asthenia, fatigue, back pain, hypokalemia, rash, cataract, lymphopenia, dyspnea, DVT, hyperglycemia, and leukopenia. The highest frequency of infections occurred in Arm Rd Continuous (75%) compared to Arm MPT (56%). There were more grade 3 and 4 and serious adverse reactions of infection in Arm Rd Continuous than either Arm MPT or RD18
The most common adverse reactions reported in ≥20% (Arm Rd Continuous): diarrhea (46%), anemia (44%), neutropenia (35%), fatigue (33%), back pain (32%), asthenia (28%), insomnia (28%), rash, (26%), decreased appetite (23%), cough (23%), dyspnea (22%), pyrexia (21%), abdominal pain (21%), muscle spasms (20%), and thrombocytopenia (20%)
After at least one prior therapy the most common adverse reactions reported in ≥20% (REVLIMID/dex vs dex/placebo): fatigue (44% vs 42%), neutropenia (42% vs 6%), constipation (41% vs 21%), diarrhea (39% vs 27%), muscle cramp (33% vs 21%), anemia (31% vs 24%), pyrexia (28% vs 23%), peripheral edema (26% vs 21%), nausea (26% vs 21%), back pain (26% vs 19%), upper respiratory tract infection (25% vs 16%), dyspnea (24% vs 17%), dizziness (23% vs 17%), thrombocytopenia (22% vs 11%), rash (21% vs 9%), tremor (21% vs 7%), and weight decreased (20% vs 15%)
Myelodysplastic Syndromes

Grade 3 and 4 adverse events reported in ≥ 5% of patients with del 5q MDS were neutropenia (53%), thrombocytopenia (50%), pneumonia (7%), rash (7%), anemia (6%), leukopenia (5%), fatigue (5%), dyspnea (5%), and back pain (5%)
Adverse events reported in ≥15% of del 5q MDS patients (REVLIMID): thrombocytopenia (61.5%), neutropenia (58.8%), diarrhea (49%), pruritus (42%), rash (36%), fatigue (31%), constipation (24%), nausea (24%), nasopharyngitis (23%), arthralgia (22%), pyrexia (21%), back pain (21%), peripheral edema (20%), cough (20%), dizziness (20%), headache (20%), muscle cramp (18%), dyspnea (17%), pharyngitis (16%), epistaxis (15%), asthenia (15%), upper respiratory tract infection (15%)
Mantle Cell Lymphoma

Grade 3 and 4 adverse events reported in ≥5% of patients treated with REVLIMID in the MCL trial (N=134) included neutropenia (43%), thrombocytopenia (28%), anemia (11%), pneumonia (9%), leukopenia (7%), fatigue (7%), diarrhea (6%), dyspnea (6%), and febrile neutropenia (6%)
Adverse events reported in ≥15% of patients treated with REVLIMID in the MCL trial included neutropenia (49%), thrombocytopenia (36%), fatigue (34%), anemia (31%), diarrhea (31%), nausea (30%), cough (28%), pyrexia (23%), rash (22%), dyspnea (18%), pruritus (17%), peripheral edema (16%), constipation (16%), and leukopenia (15%)
DRUG INTERACTIONS

Periodic monitoring of digoxin plasma levels is recommended due to increased Cmax and AUC with concomitant REVLIMID therapy. Patients taking concomitant therapies such as erythropoietin stimulating agents or estrogen containing therapies may have an increased risk of thrombosis. It is not known whether there is an interaction between dex and warfarin. Close monitoring of PT and INR is recommended in MM patients taking concomitant warfarin

NURSING MOTHERS

Discontinue drug or nursing taking into consideration the importance of the drug to the mother

PEDIATRIC USE

Safety and effectiveness in patients below the age of 18 have not been established

RENAL IMPAIRMENT

REVLIMID is primarily excreted unchanged by the kidneys; adjustments to the starting dose are recommended to provide appropriate drug exposure in patients with moderate or severe renal impairment and in patients on dialysis

Please see full Prescribing Information, including Boxed WARNINGS.

About LYSARC

The Lymphoma Academic Research Organisation (LYSARC), located in Lyon, France, is an academic clinical research organization running international clinical lymphoma trials in affiliation with the LYSA and in collaboration with other renowned, international cooperative groups. For more information, please visit www.lysarc.org.

About LYSA

The Lymphoma Study Association (LYSA), is a French association leader in international clinical and translational research in lymphoma, with a network of 130 centers in France, Switzerland, Portugal and Belgium. For more information, please visit www.lysa-lymphoma.org

Medigene expands TCR platform technology with US patent for method for identification of CD4+ T cell antigens

On July 25, 2016 Medigene AG (MDG1, Frankfurt, Prime Standard), a clinical stage immune-oncology company focusing on the development of T cell immuno-therapies for the treatment of cancer, reported the grant of US patent US9,341,617B2 (Press release, MediGene, JUL 25, 2016, View Source [SID:1234514024]). The patent, with an expected life-span until 2030, claims a method for the identification of antigens recognized by CD4+ T cells, including tumor infiltrating CD4+ T cells.

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This patent expands Medigene’s T-cell receptor (TCR) platform technology with an additional fast and efficient method for the direct identification of antigens and respective epitopes recognized by CD4+ tumor infiltrating lymphocytes and opens the way to identify immune relevant patient-specific neoantigens. Rapid definition of epitopes recognized by CD4+ T helper cells for generation of tumor vaccines also becomes potentially possible.

Prof. Dolores Schendel, CEO and CSO of Medigene, explains: "This newly patented method provides the company with a potential additional source for new TCR candidates and also allows us to identify patient-specific neoantigens seen by CD4+ T cells. While CD4+ tumor infiltrating T cells have been known in the past, finding the antigens for which these T cells are specific was very time-consuming and complex. With the covered method we are now able to overcome these problems and it helps us to provide expanded options for adoptive T-cell therapies with transgenic T-cell receptors."

Medigene holds an exclusive license to the patent that was issued to Helmholtz Zentrum München (German Research Center for Environmental Health). Patents within the same patent family have already been granted in Europe, Australia and Canada.

About Medigene’s TCR patent portfolio: Medigene’s IP-portfolio relating to the TCR platform comprises 4 patent families covering methods for the identification of tumor-antigen specific T cell receptors and T cell receptors targeting specific tumor antigens. The 4 patent families in turn comprise 47 granted patents (including validations in Europe) and 14 pending applications. In addition, Medigene is constantly expanding its IP portfolio by filing applications for new methods and newly identified T-cell receptors specific for various tumor-antigens.

About CD4+ T cells in tumor biology: Recent advances in cellular immunotherapy show that cancer cells can be efficiently eliminated by adoptive transfer of modified patient T cells. The main effector functions can be provided by genetically engineered lymphocytes expressing T-cell receptors isolated from tumor antigen-specific cytotoxic CD8+ lymphocytes, which recognize tumor-associated antigens presented on HLA class I molecules. Nevertheless, CD4+ T lymphocytes play a critical role for efficient and sustained cytotoxic CD8+ T cell responses and memory function. Multifunctional CD4+ T cells are essential to activate, control and maintain immune responses. CD4+ T cells recognize antigens presented on HLA class II molecules; thereby HLA class II tumor antigen-positive cells may be efficiently eliminated also by direct CD4+ cytotoxic mechanisms. It was demonstrated that adoptive transfer of tumor antigen-specific CD4+ T cells alone can lead to substantial regression of epithelial tumors (Science. 2014 May 9;344(6184):641-5).

About Medigene’s TCR technology:
The TCR technology aims at arming the patient’s own T cells with tumor-specific T-cell receptors. The receptor-modified T cells are then able to detect and efficiently kill tumor cells. This immunotherapy approach attempts to overcome the patient’s tolerance towards cancer cells and tumor-induced immunosuppression by activating and modifying the patient’s T cells outside the body (ex-vivo). A large number of specific T cells to fight the tumor is thereby made available to patients within a short period of time.

Medigene’s technology for T-cell receptor-modified T cells is one of the company’s highly innovative and complementary immunotherapy platforms for adoptive T-cell therapy. The TCR therapy is designed to treat patients with high tumor loads. Medigene is preparing the clinical development of its first TCR candidates and is developing a library of recombinant T-cell receptors. Moreover, a Good Manufacturing Practice (GMP)-compliant process for their combination with patient-derived T cells is currently being established. Medigene plans to commence its first own clinical TCR trials in 2017 and a second in 2018.

DelMar Pharmaceuticals Announces Presentation at the European Association of Neuro-Oncology (EANO) Annual Meeting in October 2016

On July 21, 2016 DelMar Pharmaceuticals, Inc. (NASDAQ: DMPI) ("DelMar" and the "Company"), a biopharmaceutical company focused on the development and commercialization of new cancer therapies, reported that it will present an abstract at the 12th Meeting of the European Association of Neuro-Oncology (EANO) taking place in Mannheim, Germany from October 12 – 16, 2016 (Press release, DelMar Pharmaceuticals, JUL 21, 2016, View Source [SID:1234513983]).

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DelMar will present an abstract entitled: "Dianhydrogalactitol (VAL-083) causes bifunctional alkylation leading to irreparable DNA double-strand breaks, S/G2 phase cell-cycle arrest and tumor cell death in an MGMT independent manner offering a unique treatment paradigm for GBM."

The Company’s EANO presentation will further elucidate how VAL-083 attacks cancer cells utilizing a mechanism of action distinct from other chemotherapies used in the treatment of glioblastoma multiforme (GBM), the most common and aggressive form of brain cancer. Specifically, DelMar will present data supporting the potential of VAL-083 to treat patients whose tumors exhibit features correlated with resistance to the chemotherapies currently used in the treatment of GBM.

About VAL-083

VAL-083 is a "first-in-class," small-molecule chemotherapeutic. In more than 40 Phase I and II clinical studies sponsored by the U.S. National Cancer Institute, VAL-083 demonstrated clinical activity against a range of cancers including lung, brain, cervical, ovarian tumors and leukemia both as a single-agent and in combination with other treatments.

VAL-083 has received an orphan drug designation in Europe for the treatment of malignant gliomas; and the U.S. FDA Office of Orphan Products has granted an orphan designation to VAL-083 for the treatment of glioma, medulloblastoma and ovarian cancer.

DelMar presented data from a recently completed Phase I/II clinical trial in refractory GBM at the 2016 American Association of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual meeting. In summary, the Company reported that:

Median survival of 22 patients receiving an assumed therapeutic dose of VAL-083 (≥20mg/m2) was 8.35 months following bevacizumab (Avastin) failure compared to published literature where survival of approximately three to five months has been reported.
A dose of 40 mg/m2/day VAL-083 administered on the first three days of every three-week cycle is well tolerated in refractory GBM patients and has been selected for study in subsequent clinical trials.
DelMar believes that these data support the potential of VAL-083 as a new chemotherapy that may offer improved outcomes in the treatment of GBM. The Company recently announced the completion of a successful end of Phase II meeting with the U.S. FDA and plans to advance VAL-083 into a pivotal clinical trial for GBM patients following bevacizumab failure.

DelMar’s advanced development program will feature a single randomized Phase III study measuring survival outcomes compared to a "physicians’ choice" control, which, if successful, would serve as the basis for a New Drug Application (NDA) submission for VAL-083. The control arm will consist of a limited number of salvage chemotherapies currently utilized in the treatment of Avastin-failed GBM. The final pivotal trial design will be confirmed with the FDA following further discussions with the Company’s clinical advisors.

In addition to the pivotal trial, DelMar also plans to initiate two separate Phase II clinical trials in earlier-stage GBM patients.

In collaboration with the University of Texas MD Anderson Cancer Center: A non-comparative, biomarker-driven, Phase II study to determine if treatment of MGMT-unmethylated recurrent GBM with VAL-083 or CCNU improves overall survival at 9 months, compared to historical control in bevacizumab naïve patients. (clinicaltrials.gov identifier: NCT02717962)
In collaboration with Sun-Yat Sen University and Guangxi Wuzhou Pharmaceutical (Group) Co.: A single arm Phase II clinical trial to confirm the tolerability of DelMar’s dosing regimen in combination with radiotherapy (XRT) and to explore the activity of VAL-083 in newly diagnosed MGMT-unmethylated GBM patients whose tumors are known to express high levels of MGMT.
DelMar believes that data from these clinical trials, if successful, will form the basis of a new paradigm in the treatment for all GBM patients who fail, or whose tumors exhibit features that make them unlikely to respond to, currently available chemotherapy.

Puma Biotechnology Submits New Drug Application for PB272 (Neratinib) to U.S. FDA for Extended Adjuvant Treatment of HER2-Positive Early Stage Breast Cancer

On July 21, 2016 Puma Biotechnology, Inc. (NYSE: PBYI), a biopharmaceutical company, reported that it has submitted a New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA) for its lead product candidate PB272 (neratinib) for the extended adjuvant treatment of patients with early stage HER2-overexpressed/amplified breast cancer who have received prior adjuvant trastuzumab (Herceptin)-based therapy (Press release, Puma Biotechnology, JUL 21, 2016, View Source [SID:1234513987]).

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"We are very pleased to announce this important regulatory milestone," said Alan H. Auerbach, Chief Executive Officer and President of Puma. "Although the use of trastuzumab in the adjuvant setting has led to a reduction in disease recurrence in patients with early stage HER2-positive breast cancer, there remains an unmet clinical need to further reduce the risk of recurrence and improve outcome following trastuzumab therapy. We believe that neratinib may be able to provide this type of improvement to further help patients with this disease. We look forward to working with the FDA during their review of this submission."

The submission is supported by the results of the ExteNET Phase III study, in which treatment with neratinib resulted in a 33% reduction of risk of invasive disease recurrence or death versus placebo (hazard ratio = 0.67, p = 0.009). The 2-year invasive disease free survival (DFS) rate for the neratinib arm was 93.9% and the 2-year invasive DFS rate for the placebo arm was 91.6%. For the pre-defined subgroup of patients with hormone receptor positive disease, the results of the trial demonstrated that treatment with neratinib resulted in a 49% reduction of risk of invasive disease recurrence or death versus placebo (hazard ratio = 0.51, p = 0.001). For the patients with hormone receptor positive disease, the 2-year invasive DFS rate for the neratinib arm was 95.4% and the 2-year invasive DFS rate for the placebo arm was 91.2%.

Results of the study were published online in The Lancet Oncology on February 10, 2016.

The most frequently observed adverse event for the neratinib-treated patients was diarrhea, with approximately 39.9% of the neratinib-treated patients experiencing grade 3 or higher diarrhea (1 patient (0.1%) had grade 4 diarrhea). Patients who received neratinib in the ExteNET trial did not receive any prophylaxis with antidiarrheal agents to prevent the neratinib-related diarrhea. In patients with HER2-positive early stage breast cancer who have previously been treated with adjuvant trastuzumab and received anti-diarrheal prophylaxis with loperamide, interim results of a Phase II study of neratinib monotherapy demonstrated that treatment with prophylactic loperamide reduced the rate of grade 3 or higher diarrhea to between 13.0% and 18.5%.

About ExteNET

The ExteNET trial is a double-blind, placebo-controlled, Phase III trial of neratinib versus placebo after adjuvant treatment with trastuzumab (Herceptin) in women with early stage HER2-positive breast cancer. The trial randomized 2,840 patients in 41 countries with early-stage HER2-positive breast cancer who had undergone surgery and adjuvant treatment with trastuzumab. After completion of adjuvant treatment with trastuzumab, patients were randomized to receive extended adjuvant treatment with either neratinib or placebo for a period of one year. Patients were then followed for recurrent disease, ductal carcinoma in situ (DCIS), or death for a period of two years after randomization in the trial. The primary endpoint of the trial was invasive DFS.

RedHill Biopharma Receives Additional U.S. Patent Covering RHB-105 Ahead of Confirmatory Phase III Study for H. pylori Infection

On July 21, 2016 RedHill Biopharma Ltd. (NASDAQ:RDHL) (TASE:RDHL) ("RedHill" or the "Company"), a biopharmaceutical company primarily focused on development and commercialization of late clinical-stage, proprietary, orally-administered, small molecule drugs for inflammatory and gastrointestinal diseases and cancer, reported that it has received a Notice of Allowance from the United States Patent and Trademark Office (USPTO) for a new patent covering RHB-105, a proprietary, fixed-dose, oral combination therapy for the eradication of H. pylori infection (Press release, RedHill Biopharma, JUL 21, 2016, View Source [SID:1234513989]).

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The patent application, entitled "Pharmaceutical Compositions For The Treatment Of Helicobacter Pylori" expands RedHill’s patent portfolio covering RHB-105 and is expected to be valid until 2034, once granted. The Company is currently prosecuting additional U.S. and international patent applications covering RHB-105.

"The grant of this new patent is an important addition to RedHill’s expanding IP portfolio covering RHB-105. On top of its extensive patent estate, RHB-105 was granted FDA QIDP designation under the Gain Act, providing for a total of 8 years of U.S. market exclusivity," said Danielle Abramson, Ph.D., RedHill’s Director of Intellectual Property & Research. "We are making good progress with preparations for the confirmatory Phase III study with RHB-105 for eradication of H. pylori, which follows the successful first Phase III study with RHB-105 and a positive meeting with the FDA regarding the path to marketing approval."

H. pylori bacterial infection is a major cause of chronic gastritis, peptic ulcer disease, gastric cancer and mucosa-associated lymphoid tissue (MALT) lymphoma. H. pylori infection is estimated to affect half of the adult population worldwide[1]. The growing resistance of the H. pylori bacteria to metronidazole and clarithromycin has resulted in increasing failure rates of current standard-of-care therapies (SoC) for H. pylori eradication, reaching an estimated 30%[2]. Despite the strong unmet medical need, no new drug has been approved by the FDA for this indication in over a decade. The 2015 U.S. and global market potential for H. pylori eradication therapies, at current branded prices, were estimated at approximately $1.45 billion and $4.83 billion, respectively, and could potentially grow with increasing awareness of the health risks associated with H. pylori infection and the benefits of its eradication[3].

RedHill announced in April 2016 that it had concluded a positive Type B Meeting with the U.S. Food and Drug Administration (FDA) regarding the path to U.S. marketing approval of RHB-105 and the planned confirmatory Phase III study. As a result of the productive and supportive feedback received from the FDA, RedHill is preparing for a confirmatory Phase III randomized, double-blind, active comparator, two-arm clinical study, comparing RHB-105 against a high dose amoxicillin and omeprazole regimen.

Subject to a successful outcome, the confirmatory Phase III study, and the supportive PK program to be completed prior to its initiation, are expected to complete the clinical package required for a U.S. New Drug Application (NDA) for RHB-105.

RHB-105 was previously granted Qualifying Infectious Disease Product (QIDP) designation by the FDA, providing a Fast-Track development pathway, as well as NDA Priority Review status, potentially leading to a shorter NDA review time by the FDA, if filed. If approved, RHB-105 will also receive an additional five years of U.S. market exclusivity, in addition to the standard exclusivity period, for a total of 8 years of U.S. market exclusivity.

With RHB-105, RedHill is pursuing an indication of first-line treatment of H. pylori infection, regardless of ulcer status, a significantly broader indication than current standard treatments for H. pylori, which are typically indicated only for patients with active or recent history of duodenal ulcer disease. If approved, RHB-105 may be the first H. pylori eradication therapy to target this broader indication, which would significantly expand the potential patient population for this drug candidate.

About RHB-105:
RHB-105 is a new and proprietary fixed-dose oral combination therapy of two antibiotics and a proton pump inhibitor (PPI) in an all-in-one oral capsule with a planned indication for the treatment of H. pylori infection. H. pylori bacterial infection is a major cause of chronic gastritis, peptic ulcer disease, gastric cancer and mucosa-associated lymphoid tissue (MALT) lymphoma. A first Phase III study with RHB-105 was completed in the U.S. with positive results (the ERADICATE Hp study). The study demonstrated an overall success rate of 89.4% in eradicating H. pylori, and met its protocol-defined primary endpoint of superiority in eradication of H. pylori infection over historical standard of care efficacy levels of 70%, with high statistical significance (p < 0.001) . A confirmatory Phase III study is planned to be initiated in the U.S. Additional studies may be required, subject to FDA feedback. RHB-105 has been granted Qualifying Infectious Disease Product (QIDP) designation by the FDA, providing a Fast-Track development pathway, as well as NDA Priority Review status, potentially leading to a shorter NDA review time by the FDA, if filed. If approved, RHB-105 will also receive an additional five years of exclusivity, in addition to the standard exclusivity period, for a total of 8 years of U.S. market exclusivity.