← Back

Wire · regulatory

Ifinatamab Deruxtecan Biologics License Application for Certain Patients with Previously ...

Published

28 September 2026

Topic

regulatory

◆ Sectors

Biotech

◆ Geography

United States

◆ Source

Read at biospace.com →

◆ Verified

Fusion42 · 28 September 2026 · Fusion42 review

Daiichi Sankyo and Merck have voluntarily withdrawn the U.S. Biologics License Application for accelerated approval of ifinatamab deruxtecan in extensive-stage small cell lung cancer patients, citing insufficient data to meet FDA requirements from the phase 2 IDeate-Lung01 trial. Enrollment continues in a phase 3 trial (IDeate-Lung02), with further phase 3 studies underway for other cancer types.

This Wire brief sits within Fusion42's coverage of Biotech.

◆ ◆ The Wire takeaway

You face a tougher FDA bar on accelerated cancer drug approvals with ifinatamab deruxtecan’s withdrawal. Clinical-stage founders in oncology must now lean heavily on late-stage trial results to secure US market entry.

◆ Coverage

1 source · 28 Sep 2026

◆ Related on Wire

◆ Topics

Biotechfdadrug-approvaloncologyclinical-trialslung-cancer