Date: 2015-12-07
Type of information: Presentation of results at a congress
phase: 2
Announcement: presentation of results at the 57th American Society of Hematology (ASH) Annual Meeting in Orlando
Company: Genentech, a member of Roche Group (USA - CA - Switzerland) AbbVie (USA -IL)
Product: venetoclax (RG7601, GDC-0199/ABT-199
Action
mechanism: protein inhibitor/B-cell lymphoma 2 (BCL-2) inhibitor. Venetoclax (RG7601, GDC-0199/ABT-199 is an investigational small molecule designed to selectively bind and inhibit the BCL-2 protein, which plays an important role in a process called apoptosis (programmed cell death). It is believed that blocking BCL-2 may restore the signaling system that tells cancer cells to self-destruct. The BCL-2 protein is linked to the development of resistance in certain blood cancers and is expressed in chronic lymphocytic leukemia (CLL) and non-Hodgkin’s lymphoma (NHL). In collaboration with AbbVie, venetoclax is being evaluated in a robust development program as a single agent or in combination with other medicines. There are ongoing Phase II and III studies for venetoclax in CLL, and Phase I and II studies are also ongoing in several other blood cancers, including indolent NHL, diffuse large B-cell lymphoma (DLBCL), acute myeloid leukemia (AML) and multiple myeloma (MM). Venetoclax was recently granted Breakthrough Therapy Designation by the FDA for the treatment of previously treated CLL with the 17p deletion.
Disease: patients with previously treated (relapsed or refractory) chronic lymphocytic leukemia (CLL) harboring the 17p deletion
Therapeutic area: Cancer - Oncology
Country: Australia, Canada, France, Germany, Poland, UK, USA
Trial
details: M13-982 is a Phase 2, open label, multicenter, study evaluating the efficacy and safety of ABT-199 in relapsed or refractory subjects with CLL harboring 17p13 (TP53 locus) deletion. 107 subjects were enrolled in the main cohort, with evaluation of efficacy as the primary objective, and approximately 50 subjects will be enrolled in the safety expansion cohort to evaluate safety and updated tumor lysis syndrome prophylaxis and management measures. Enrollment into the main cohort is closed. Enrollment into the safety expansion cohort is ongoing. ( NCT01889186)
Latest
news: * On December 7, 2015, Roche announced new, positive data from the Phase II M13-982 study of venetoclax, an investigational medicine being developed in partnership with AbbVie. Results of the study showed a clinically meaningful reduction in the number of cancer cells (overall response rate, ORR) in 79.4 percent of people with previously treated (relapsed or refractory) chronic lymphocytic leukaemia (CLL) with 17p deletion. No unexpected safety signals were reported for venetoclax. These pivotal data from the Phase II M13-982 study were presented at the 57th American Society of Hematology (ASH) Annual Meeting in Orlando. The results show: - The study met its primary endpoint, with an ORR of 79.4 percent with venetoclax, as assessed by an independent review committee (IRC). In addition, 7.5 percent of people achieved a complete response with or without complete recovery (complete response without normal blood counts) in the bone marrow (CR/CRi). AbbVie has submitted a New Drug Application (NDA) for venetoclax to the FDA under breakthrough therapy designation (BTD), based in part on results of the M13-982 study. Venetoclax received BTD from the FDA earlier this year for the treatment of people with relapsed or refractory chronic lymphocytic leukaemia harbouring the 17p deletion. AbbVie has also submitted a marketing authorization application (MAA) to the European Medicines Agency (EMA). Submissions to other regulatory authorities around the world are planned in 2016. * On August 12, 2015, Genentech, a member of the Roche Group, announced positive results today from the Phase II M13-982 study of venetoclax, an investigational medicine being developed in partnership with AbbVie. The study met its primary endpoint, showing that venetoclax monotherapy resulted in a clinically meaningful reduction in the number of cancer cells (overall response rate, ORR) in a pre-defined proportion of people with previously treated (relapsed or refractory) chronic lymphocytic leukemia (CLL) harboring the 17p deletion. No unexpected safety signals were reported for venetoclax.Data from the pivotal M13-982 study will be submitted for presentation at an upcoming medical meeting. AbbVie plans to submit these data to the FDA, European Medicines Agency (EMA) and other health authorities around the world for approval consideration.
- Forty-five people had an assessment for minimal residual disease (MRD) in the blood. Notably 18 people (17 percent of the total, 21 percent of responders) achieved MRD-negativity, meaning no cancer could be detected using a specific test. Ten of these 18 people also had bone marrow assessments and six were MRD-negative.
- At one year, 84.7 percent of all responses and 94.4 percent of MRD-negative responses were maintained. The one-year progression-free survival (PFS) and overall survival (OS) rates were 72 percent and 86.7 percent, respectively.
- No unexpected safety signals were reported. The most common Grade 3-4 adverse events were low white blood cell count (40 percent), low red blood cell count (18 percent), and low platelet count (15 percent). Grade 3 or higher infection occurred in 20 percent of people. Laboratory tumour lysis syndrome was reported in five people; none had clinical consequences.
