In September 2025, BioWorld recorded 230 clinical trial updates spanning phases I through III, up sharply from 95 in August, 140 in July and just below 254 in June. Among these, 22 phase III trials reported positive outcomes, while four ended in failure and another three produced mixed results.

Tango Therapeutics Inc. plans a pivotal study next year in second-line MTAP-deleted pancreatic ductal adenocarcinoma based on positive phase I/II data with next-generation MTA-cooperative PRMT5 inhibitor vopimetostat (TNG-462) in patients with tumors of that type.

Inhibrx Biosciences Inc.’s monoclonal antibody for treating advanced or metastatic, unresectable chondrosarcoma hit its primary endpoint in a registrational phase II study, doubling the company’s stock on Oct. 24. Top-line data from the placebo-controlled study of ozekibart (INBRX-109) produced statistically significant and clinically meaningful improvement in median progression-free survival in a tough-to-treat patient population that has few remaining options.

Ventyx Biosciences Inc. rolled out positive results from the phase II study with oral, once-daily VTX-3232 in patients with obesity and cardiovascular (CV) risk factors.

Ipsen SA is expanding its cancer portfolio with the €1 billion (US$1.16 billion) acquisition of immuno-oncology specialist Imcheck SAS, and will pay €350 million up front with the balance to come in regulatory and sales-based milestones for the lead program ICT-01.

Moderna Inc. stopped its efforts to develop mRNA-1647 as a vaccine for preventing congenital cytomegalovirus infection, the most common infectious cause of birth defects in the U.S. The pivotal and placebo-controlled phase III CMVictory study of mRNA-1647 missed the primary efficacy endpoint, which was preventing the infection in seronegative females ages 16 to 40.

The failure of Alector Inc.’s phase III study of latozinemab in treating dementia halved the company’s stock on Oct. 22. That is also about the same percentage of staff that Alector is letting go after the clinical trial stumble.

While positive results from the investigator-led phase II CHOPIN trial at ESMO 2025 failed to get investors dancing, they were no doubt music to management’s ears, particularly with Delcath Systems Inc.’s third quarter earnings report missing a beat.