Zai Lab Announces Updated Phase 1 Data for Zocilurtatug Pelitecan (formerly ZL-1310), Demonstrating Potential as a First-in-Class/Best-in-Class DLL3-Targeted ADC for Small Cell Lung Cancer, and Initiation of Global Phase 3 Registrational Study
Friday, October 24, 2025 BiopharmaWatch Research 1 min read
Key Takeaway: Zai Lab Announces Updated Phase 1 Data for Zocilurtatug Pelitecan (formerly ZL-1310), Demonstrating Potential as a First-in-Class/Best-in-Class DLL3-Targeted ADC for Small Cell Lung Cancer, and Initiation of Global Phase 3 Registrational Study
Price reaction · baseline $28.02 (2025-10-23 close) · hit after-hours · clean, no other ZLAB news in the window
day 0 close
-6.1%
day 1
-6%
day 3 · peak
-9.6%
BiopharmaWatch Analysis
From our catalyst data and publicly available data · not financial advice
Best trade, last catalyst
+60%
120-day peak, hindsight
Typical move
2.2%
average across 15 past catalysts
Cash runway
~28 mo
Low dilution risk
Lead asset
ZL-1310
Phase 3 · Small-cell Lung Cancer
Full Press Release Details
Zai Lab Announces Updated Phase 1 Data for Zocilurtatug Pelitecan (formerly ZL-1310), Demonstrating Potential as a First-in-Class/Best-in-Class DLL3-Targeted ADC for Small Cell Lung Cancer, and Initiation of Global Phase 3 Registrational Study.