Drugs / Ifinatamab Deruxtecan (I-DXd)
last change Apr 2026 re-read 3 minutes ago

Ifinatamab Deruxtecan (I-DXd)

Other / unclassified

Developed for
small cell lung carcinoma
Investigated by
Daiichi Sankyo · Merck Sharp & Dohme LLC

Regulatory milestones approvals, filings & regulatory actions · 1 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Filed US (FDA) — small cell lung carcinoma 2026-04-13

“Biologics License Application (BLA) for ifinatamab deruxtecan (I-DXd) has been accepted and granted Priority Review by the U.S. Food and Drug Administration (FDA)” merck.com ↗

Trials 1

2023202420252026
PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 2 NCT05280470 Mar 2022 → Mar 2025 overdue small cell lung carcinoma Daiichi Sankyo Active not recruiting No outcome recorded

News releases announcing trial results or a regulatory action · 4

DateIssuerRelease
2026-04-13 Merck Sharp & Dohme LLC Regulatory Ifinatamab Deruxtecan Granted Priority Review in the U.S. for Adult Patients with Previously Treated Extensive-Stage Small Cell Lung Cancer who Experienced Disease Progression on or After Platinum-Based Chemotherapy merck.com ↗
Daiichi Sankyo (TSE: 4568) and Merck’s (NYSE: MRK), known as MSD outside of the United States and Canada, Biologics License Application (BLA) for ifinatamab deruxtecan (I-DXd) has been accepted and granted Priority Review by the U.S. Food and Drug Administration (FDA) for the treatment of adult patients with extensive-stage small cell lung cancer (ES-SCLC) with disease progression on or after platinum-based chemotherapy.
2025-09-07 Merck Sharp & Dohme LLC Results Ifinatamab Deruxtecan Demonstrated Clinically Meaningful Response Rates in Patients with Extensive-Stage Small Cell Lung Cancer in IDeate-Lung01 Phase 2 Trial merck.com ↗
Results from the IDeate-Lung01 Phase 2 trial showed that ifinatamab deruxtecan (I-DXd) demonstrated clinically meaningful response rates in patients with previously treated extensive-stage small cell lung cancer (ES-SCLC).
2025-08-18 Merck Sharp & Dohme LLC Regulatory Ifinatamab Deruxtecan Granted Breakthrough Therapy Designation by U.S. FDA for Patients with Pretreated Extensive-Stage Small Cell Lung Cancer merck.com ↗
Ifinatamab deruxtecan (I-DXd) has been granted Breakthrough Therapy Designation (BTD) by the U.S. Food and Drug Administration (FDA) for the treatment of adult patients with extensive-stage small cell lung cancer with disease progression on or after platinum-based chemotherapy.
2024-09-07 Merck Sharp & Dohme LLC Results Ifinatamab Deruxtecan Continues to Demonstrate Promising Objective Response Rates in Patients with Extensive-Stage Small Cell Lung Cancer in IDeate-Lung01 Phase 2 Trial merck.com ↗
Results from an interim analysis of the dose-optimization part of the ongoing IDeate-Lung01 phase 2 trial showed ifinatamab deruxtecan (I-DXd) continues to demonstrate promising objective response rates in patients with pretreated extensive-stage small cell lung cancer (ES-SCLC).

Evidence & citations 3 cited values

Every value below carries the sentence it was read from. 2 sources stand behind the page.

FieldValueCited text
Known as Ifinatamab Deruxtecan (I-DXd) ClinicalTrials.gov intervention name — accepted as the source's own label NCT05280470 ↗
Modality Other / unclassified “a B7 homolog 3-directed antibody-drug conjugate” PMID 41086386 ↗ Oct 2025
Route Intravenous “I-DXd will be administered as an intravenous (IV) infusion on Day 1 of each 21-day cycle (every Q3W).” NCT05280470 ↗