AB Science S.AAB Science is focusing resources on its promising AB8939 AML program and masitinib ALS program, discontinuing non-priority trials.

AB Science is discontinuing three non-priority clinical studies to concentrate resources on its AB8939 program for acute myeloid leukemia and its masitinib program for amyotrophic lateral sclerosis. The discontinued studies are a Phase 2 trial of masitinib in mast cell activation syndrome, a Phase 3 trial of masitinib in mastocytosis, and a Phase 3 trial of masitinib in progressive forms of multiple sclerosis. The company stated that the discontinuation is not related to safety concerns and that it intends to complete the studies in accordance with regulations. For the AB8939 program, AB Science has completed Phase 1 Step 3 evaluating the combination of AB8939 and venetoclax and plans to seek authorization to initiate Phase 4, which will test a triple combination of AB8939, venetoclax, and azacitidine. The Phase 3 masitinib trial in amyotrophic lateral sclerosis, approved in 2025 but not yet started, will undergo a protocol update and require health authority authorization to resume.
AB Science S.AAB Science is focusing resources on its promising AB8939 AML program and masitinib ALS program, discontinuing non-priority trials.