Longitudinal Genomic Analysis to Fine-Tune Targeted Therapy: Results of the Phase II LOGIC 2 Trial in Patients With BRAF V600-Mutant Metastatic Melanoma.
Publication Title
Clinical cancer research : an official journal of the American Association for Cancer Research
Document Type
Article
Publication Date
3-19-2025
Keywords
oregon; chiles; genomics
Abstract
PURPOSE: LOGIC 2 (NCT02159066), a multicenter, open-label, two-part, phase II study assessed encorafenib plus binimetinib combined with a third targeted agent after tumor progression on encorafenib plus binimetinib in patients with locally advanced unresectable or metastatic BRAF Patients and Methods: Adults with locally advanced unresectable or metastatic BRAF V600-mutant melanoma who were BRAF inhibitor/MEK inhibitor (BRAFi/MEKi)-treatment naive or pretreated received encorafenib plus binimetinib (Part I/Run-in). Based on the genomic testing at disease progression following encorafenib plus binimetinib, patients were assigned to one of four treatment arms to receive encorafenib plus binimetinib with an appropriate molecularly targeted agent (ribociclib, infigratinib, capmatinib, or buparlisib; Part II). The primary endpoint was best overall response; safety, biomarkers, pharmacokinetics, and other efficacy endpoints were also assessed.
RESULTS: In Part I/Run-in, 75 BRAFi/MEKi-naive patients and 83 BRAFi/MEKi-pretreated patients were treated; in Part II, 58 patients were treated (ribociclib, n=38; infigratinib, n=1; capmatinib, n=13; buparlisib, n=6). The overall confirmed response rate was 73.3% (95% CI, 61.9-82.9) in BRAFi/MEKi-naive patients, 25.3% (95% CI, 16.4-36.0) in pretreated patients, 2.6% (95% CI, 0.1-13.8) in the ribociclib arm, and 0% in the other three arms. Adverse events were manageable and consistent with the known safety profile of each drug.
CONCLUSIONS: LOGIC 2 supports the use of encorafenib plus binimetinib for treatment naive and previously treated locally advanced unresectable or metastatic BRAF V600-mutant melanoma. However, adding a third targeted agent following disease progression did not show meaningful efficacy; further research is needed to identify other therapeutic targets to circumvent resistance.
Area of Special Interest
Cancer
Specialty/Research Institute
Earle A. Chiles Research Institute
Specialty/Research Institute
Oncology
Specialty/Research Institute
Pharmacy
DOI
10.1158/1078-0432.CCR-24-0254
