THEORY

Does NCT05353257 meet its primary endpoint at primary completion?

HLX10 · Limited-Stage Small Cell Lung Cancer · Phase 3

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Trial

NCT
NCT05353257
Drug / intervention
HLX10
Indication
Limited-Stage Small Cell Lung Cancer
Phase
3
Sponsor
Shanghai Henlius Biotech
Primary completion
2026-06-30
Status
open

Theories (1)

74% likely to meet · workos:user_01KSZTKKXBYCCV0QQHTN6WP9S8

target PD-1 · moa checkpoint-inhibition+chemoradiation · failure mode none

  1. premise Small cell lung cancer is genomically unstable with high tumor mutational burden, and PD-1/PD-L1 blockade added to platinum-etoposide extended survival in extensive-stage disease (e.g. serplulimab in ASTRUM-005), establishing checkpoint sensitivity of SCLC
  2. premise In limited-stage SCLC specifically, consolidation durvalumab after concurrent chemoradiation improved both PFS and OS versus placebo in the ADRIATIC phase 3, directly de-risking the question of whether a checkpoint inhibitor adds to chemoradiation in this stage
  3. inference This trial applies the same PD-1-plus-chemoradiation strategy with serplulimab in limited-stage SCLC, so the positive ADRIATIC readout makes a PFS benefit the expected, precedent-backed outcome rather than a novel bet
  4. prediction PFS is met in the intended direction with HR below 0.8

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