Corporate Member Update: Amgen

Corporate Member Update: Amgen

IMDELLTRA® (tarlatamab-dlle)
November, 2025

IMPORTANT UPDATE: Full FDA Approval Granted in 2L ES-SCLC

IMDELLTRA® (tarlatamab-dlle) is now fully FDA-approved for the treatment of adult patients with extensive stage small cell lung cancer (ES-SCLC) with disease progression on or after platinum-based chemotherapy. IMDELLTRA is the first and only DLL3-targeting Bispecific T-cell Engager (BiTE®) therapy approved in this setting, representing an important milestone for patients and providers.

This approval was based on results from the Phase 3 DeLLphi-304 trial, which was a phase 3, multicenter, randomized, open-label trial evaluating the efficacy and safety of IMDELLTRA® compared with chemotherapy in 509 patients with ES-SCLC who had progressed after treatment with 1 prior line of platinum-containing chemotherapy, with or without a PD-(L)1 inhibitor. Patients were randomized 1:1 to receive IMDELLTRA® (n=254) or chemotherapy (n=255).

The study demonstrated a median OS of 13.6 months with IMDELLTRA® compared to 8.3 months with chemotherapy, with a 40% reduction in the risk of death (HR 0.60; p<0.001).1,2

The most common (> 20%) adverse reactions in clinical trials of IMDELLTRA(R) were CRS (57%), fatigue (48%), decreased appetite (38%), dysgeusia (34%), pyrexia (33%), constipation (31%), musculoskeletal pain (31%), and nausea (25%).2

Please see the Indication and Important Safety Information below, including the Boxed Warnings, as well as the full Prescribing Information.

You can learn more at IMDELLTRAhcp.com.

Click here to read the full memo. 

 
 
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