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BRIGHTLINE-1: When a Negative Trial Reveals Two Active Therapies
Adel Shahnam1, Mrinal M Gounder1
1Memorial Sloan Kettering Cancer Center New York, NY United States.
Summary
Brigimadlin demonstrated biological activity in DDLPS, with a median PFS of 8.4 months and ORR of 22.3%. The BRIGHTLINE-1 trial
Area of Science:
- Oncology
- Pharmacology
Background:
- The BRIGHTLINE-1 trial investigated brigimadlin for Dedifferentiated Liposarcoma (DDLPS).
- Previous assumptions regarding control arm efficacy in DDLPS may have influenced trial outcomes.
Purpose of the Study:
- To evaluate the efficacy and biological activity of brigimadlin in patients with DDLPS.
- To assess p53 reactivation as a translational marker.
Main Methods:
- Phase II clinical trial design.
- Assessment of progression-free survival (PFS) and objective response rate (ORR).
- Translational analysis for p53 pathway activity.
Main Results:
- Brigimadlin exhibited median PFS of 8.4 months and ORR of 22.3%.
- Evidence of p53 reactivation was observed, indicating biological engagement.
- Doxorubicin, the control arm, exceeded retrospective expectations, setting a higher benchmark.
Conclusions:
- Brigimadlin shows notable biological activity in DDLPS, despite the trial's headline outcome.
- Flawed control arm assumptions may have contributed to the trial's 'negative' classification.
- The study highlights the need for refined control arm considerations in DDLPS clinical trials.
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