Cancer medicines

Tarlatamab

Tarlatamab-dlle · Imdelltra

A bispecific T-cell engager that brings immune cells and cancer cells together.

Sources checked · Introductory guide

How does it work?

It binds DLL3 on cancer cells and CD3 on T cells, helping T cells attack the cancer.[1]

When is it used?

FDA traditional approval was granted on November 19, 2025, for adults with extensive-stage small cell lung cancer progressing on or after platinum-based chemotherapy.[2]

Safety to discuss before treatment

Boxed warnings cover cytokine release syndrome (CRS) and neurologic toxicity, including ICANS. Treatment starts with step-up dosing and monitoring. Report fever, breathing difficulty or confusion immediately.[3]

Check local access separately

US approval does not establish Korean approval, reimbursement or availability. Ask your treatment team about local access and cost.

Questions for your care team

  • Is this medicine relevant to my treatment history and current condition?
  • How should I prepare for monitoring and caregiver support?

Sources and scope

Source documents are in English.

  1. NCI · Tarlatamab-dlle (opens in a new tab)
  2. FDA · Traditional approval (2025-11-19) (opens in a new tab)
  3. DailyMed · IMDELLTRA prescribing information (opens in a new tab)

General information based on official public sources. This is not a complete list of uses or side effects. Individual treatment decisions require your care team and current source documents.

Related entries

Tarlatamab | Cancer Encyclopedia | My Chemo Diary