Biotech Stocks Rise After Hours: Clene Jumps Ahead of ALS Update; Werewolf, Biomea, and Dyne Also Gain
Clene Inc. Gains: Clene Inc. shares rose 8.53% in after-hours trading after announcing an upcoming investor call regarding its CNM-Au8 program for ALS, despite a regular session decline.
Werewolf Therapeutics Update: Werewolf Therapeutics saw a 6.12% increase after hours, likely influenced by investor reactions to its recent presentation at a cancer immunotherapy conference, despite no new news.
Biomea Fusion Presentation: Biomea Fusion's stock climbed 7.31% after hours following its announcement of an upcoming presentation on icovamenib data at a major diabetes and cardiovascular disease congress.
General Market Trends: Other biotech companies like Denali Therapeutics, TScan Therapeutics, and Nyxoah also experienced after-hours gains, reflecting ongoing investor interest and positioning ahead of regulatory milestones and presentations.
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GT Biopharma Advances GTB-3650 Clinical Trial to Cohort 4 with 10μg/kg/day Dosing
- Clinical Advancement: GT Biopharma has advanced its GTB-3650 clinical trial to Cohort 4, where patients are receiving a dosing of 10μg/kg/day, indicating potential efficacy against resistant blood cancers, with further results expected in Q1 2026.
- Safety Confirmation: Six patients across Cohorts 1, 2, and 3 have successfully completed treatment with GTB-3650, establishing the therapy's safety profile at escalating doses without any dose-limiting toxicities, thereby enhancing confidence in the clinical trial.
- Dose Escalation Plan: The trial is designed to include seven cohorts, with plans to enroll two patients per cohort, escalating doses from 1.25μg/kg/day to potentially 100μg/kg/day, demonstrating the company's ongoing commitment to efficacy and patient care.
- Therapeutic Prospects: GT Biopharma is also advancing GTB-5550, with regulatory submission for human trials expected in late December 2025 or January 2026, further expanding its market opportunities in cancer treatment.

GT Biopharma Advances GTB-3650 Clinical Trial to Cohort 4 with 10μg/kg/day Dosing
- Clinical Trial Progress: GT Biopharma has advanced its GTB-3650 clinical trial to Cohort 4, where patients are receiving a dosing of 10μg/kg/day, indicating enhanced safety and potential efficacy in combating resistant blood cancers.
- Treatment Protocol Optimization: The therapy follows a continuous infusion schedule structured as two-week treatment periods followed by two-week rest intervals, which is expected to improve patient adherence and treatment outcomes over a four-month duration.
- Market Potential: Targeting CD33-positive acute myeloid leukemia and high-risk myelodysplastic syndrome, GTB-3650 represents a significant complement to traditional therapies, potentially unlocking substantial market opportunities for the company.
- Future Outlook: The company plans to share its next trial update in Q1 2026, and as dosing escalates, GTB-3650 is expected to approach higher efficacy ranges, further advancing its clinical development trajectory.









