“Array BioPharma (ARRY) today announced that the U.S. Food and Drug Administration (FDA) has accepted for review its New Drug Applications (NDAs) to support use of the combination of binimetinib 45 mg twice daily and encorafenib 450 mg once daily (COMBO450) for the treatment of patients with BRAF-mutant advanced, unresectable or metastatic melanoma. The FDA set a target action date under the Prescription Drug User Fee Act (PDUFA) of June 30, 2018 for both applications. In addition, the FDA informed Array that based on their preliminary review of the applications they have not identified any potential review issues, and that they are not currently planning to hold an advisory committee meeting to discuss these NDAs. Array completed its NDA submissions at the end of June 2017based on findings from the pivotal Phase 3 COLUMBUS trial.”
Mutations in the gene that encodes the KRAS protein are frequently encountered in various human cancers. They are found in about 30% of non-small cell lung cancers (NSCLCs), making KRAS the single most common gene mutated in this cancer. The rate of KRAS mutations in other cancers, such as pancreatic or colorectal, is even higher.
A mutant KRAS protein that is always in the “on” position activates many signaling pathways, many of which lead to unrestrained growth and proliferation of cancer cells. This makes KRAS an appealing treatment target. However, challenges abound, and researchers are exploring several different approaches to treating KRAS-mutant cancers.
Unlike mutations in proteins known as receptor tyrosine kinases, like EGFR or ALK, mutated KRAS is a very difficult protein to target with cancer drugs. (So much so that the National Institutes of Health (NIH) has undertaken a special effort to intensify the effort towards successful targeting of mutant KRAS, known as the RAS Initiative.) Continue reading…
“Array BioPharma (Nasdaq: ARRY) today announced top-line results from Part 2 of the Phase 3 COLUMBUS study evaluating binimetinib, a MEK inhibitor, and encorafenib, a BRAF inhibitor, in patients with BRAF-mutant advanced, unresectable or metastatic melanoma. The primary analysis of Part 2 compared progression free survival (PFS) in patients treated with binimetinib 45mg twice daily plus encorafenib 300mg daily (COMBO300) to patients treated with encorafenib 300mg daily as a single agent. The median PFS for patients treated with COMBO300 was 12.9 months compared to 9.2 months for patients treated with single agent encorafenib, with HR of 0.77 [95% CI 0.61-0.97, p=0.029]. COMBO300 was generally well-tolerated and reported dose intensity and adverse events were consistent with COMBO450 results in COLUMBUS Part 1. Part 2 was designed specifically to assess the contribution of binimetinib to the combination of binimetinib and encorafenib by reducing the dose of encorafenib to 300mg in the combination arm to allow for a comparison of equal doses across arms. Further results from Part 2 will be presented at a medical meeting during the second half of 2017.”
By 2050, the number of deaths due to malignant melanoma in the U.S. could be three times lower than peak levels reached before 1960. Researchers presented the data behind this prediction at the 2017 European Cancer Congress in January.
It is unclear how much of this anticipated decline in deaths can be attributed to the availability of new, effective treatments. However, it is obvious that much-increased awareness of sunlight exposure as the single factor most responsible for the development of skin melanoma has contributed to lower incidence of the disease.
In any case, the armament of treatments available for metastatic melanoma is currently such that this diagnosis has transformed from being almost universally fatal (even just a few years ago) into a being largely treatable. Since 2011, the U.S. Food and Drug Administration (FDA) has approved eight new drugs for melanoma. Continue reading…
“Array BioPharma has some explaining to do. Fifteen months after the Boulder, CO-based biotech said that it had the data needed for its first approval of binimetinib for NRAS-positive melanoma, execs are walking back the application and its plans for a launch.
“In a statement out Sunday evening, Array $ARRY said that after getting feedback from the FDA, execs ‘concluded that the clinical benefit demonstrated in the Phase 3 NEMO clinical trial would not be found sufficient to support approval of the NRAS-mutant melanoma NDA.’ ”
“The MEK inhibitor binimetinib improved progression-free survival compared with dacarbazine in patients with NRAS-mutant melanoma, according to the phase III results of the NEMO trial published in Lancet Oncology.
“In addition, improved progression-free survival was seen in patients who had previously failed immunotherapy, the current guideline-recommended first-line treatment.
” ‘Future treatment algorithms for metastatic melanoma might incorporate binimetinib therapy in patients with advanced NRAS-mutant melanoma, including after the failure of immunotherapy,’ wrote Reinhard Dummer, MD, of the department of dermatology at the University Hospital Zurich Skin Cancer Center in Switzerland, and colleagues.”
“The phase 3 COLUMBUS trial, designed to evaluate binimetinib plus encorafenib for the treatment of BRAF–mutant melanoma, met its primary endpoint of improving PFS over vemurafenib, according to the drug’s manufacturer.
“These results also were presented at the Society for Melanoma Research Congress in Boston.
“In part 1 of the trial, researchers randomly assigned 577 patients with locally advanced, unresectable or metastatic melanoma with BRAF V600mutations to receive 45 mg binimetinib (MEK162, Array BioPharma) plus 450 mg of encorafenib (LGX818, Array BioPharma), 300 mg encorafenib monotherapy or 960 mg vemurafenib (Zelboraf, Genentech) monotherapy.”
“Array BioPharma (Nasdaq: ARRY) and Pierre Fabre today jointly announced top-line results from Part 1 of the Phase 3 COLUMBUS (Combined LGX818 Used with MEK162 in BRAF Mutant UnresectableSkin Cancer) study evaluating LGX818 (encorafenib), a BRAF inhibitor, and MEK162 (binimetinib), a MEK inhibitor, in patients with BRAF-mutant advanced, unresectable or metastatic melanoma. The study met its primary endpoint, significantly improving progression free survival (PFS) compared with vemurafenib, a BRAF inhibitor, alone.”
“Array BioPharma (Nasdaq: ARRY) today announced that the FDA has accepted its New Drug Application (NDA) for binimetinib with a target action date under the Prescription Drug User Fee Act (PDUFA) of June 30, 2017. Array completed its NDA submission of binimetinib in late June 2016 based on findings from the pivotal Phase 3 NEMO (NRAS MELANOMA AND MEK INHIBITOR) trial in patients with NRAS-mutant melanoma. The FDA also indicated that it plans to hold an advisory committee meeting (ODAC) as part of the review process. As previously reported, Array is currently preparing for an Application Orientation Meeting (AOM) with the FDA in September 2016, which it expects will include a discussion of the NDA package including clinical risk / benefit.”
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