Emerging Clinical Trials: Novel Approaches in Second-Line ES-SCLC

Opinion
Video

Panelists discuss how first-line chemoimmunotherapy has become the standard for extensive-stage small cell lung cancer (ES-SCLC) based on trials such as IMpower133 and CASPIAN, while emerging agents such as DLL3-targeted therapies show promise in the relapsed setting, highlighting the need for personalized approaches and continued clinical trial participation.

Summary for Physicians:
First-Line Trials:
• IMpower133
o Atezolizumab plus carboplatin/etoposide
o Improved overall survival (OS): 12.3 vs 10.3 months
o Progression-free survival (PFS) benefit; manageable safety profile
• CASPIAN
o Durvalumab plus platinum/etoposide
o OS benefit: 13.0 vs 10.3 months
o Triplet (with tremelimumab): no added benefit, more toxicity
Second Line and Beyond:
• DeLLphi-301
o Tarlatamab (DLL3-targeting bispecific)
o Promising response rates in relapsed small cell lung cancer
o Cytokine release syndrome observed; mostly low grade
• IMforte
o Atezolizumab maintenance post first line
o No significant OS/PFS improvement
o Safety consistent with prior data
• DAREON-8
o Dareonimab in later-line setting
o Early data: modest activity, favorable safety
o Awaiting mature efficacy results
Impact on Treatment Strategies:
• Chemotherapy plus PD-L1 inhibitors: standard first-line
• Limited options post progression
• Novel agents (eg, DLL3 targeted) offer new hope
• Emphasis on personalized treatment and clinical trials

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