Enhanced Versus Standard Dermatologic Management With Amivantamab-Lazertinib in EGFR-Mutated Advanced NSCLC: The COCOON Global Randomized Controlled Trial
Abstract
INTRODUCTION
Amivantamab plus lazertinib significantly improved progression-free and overall survival versus osimertinib in patients with previously untreated, EGFR-mutant advanced NSCLC. EGFR-targeted therapies are associated with dermatologic adverse events (AEs), which can affect quality of life (QoL). COCOON was conducted to assess prophylactic management and improve treatment experience.
METHODS
In the phase 2 COCOON study (NCT06120140), participants with previously untreated, EGFR-mutant, locally advanced or metastatic NSCLC received intravenous amivantamab plus oral lazertinib and were randomized 1:1 to enhanced dermatologic management (COCOON DM) or standard of care (SoC DM) per local guidelines. COCOON DM included oral doxycycline or minocycline (100 mg twice daily; weeks 1-12), clindamycin 1% (on scalp daily; weeks 13-52), chlorhexidine 4% (on fingernails and toenails daily), and ceramide-based moisturizer (on body and face at least daily). Primary end point was incidence of grade 2 or higher dermatologic AEs of interest (DAEIs) by week 12.
RESULTS
In total, 201 participants were randomized (99 to COCOON DM and 102 to SoC DM). At a median follow-up of 7.1 months, COCOON DM demonstrated significant reduction in the primary end point versus SoC DM (42% versus 75%; OR, 0.24; 95% confidence interval, 0.13-0.45; p < 0.0001). By week 12, the largest benefit with COCOON DM was observed in DAEIs involving the face and body (excludes paronychia; 26% versus 60%; p < 0.0001)…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 201 participants or records.
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