catalyst calendar
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SMMT biotech catalysts & pipeline

SUMMIT THERAPEUTICS INC · Data as of 2026-10-25

Upcoming catalysts

ivonescimab — Interim data

H2 2026

The number of PFS events needed in the squamous cohort for the primary analysis is expected to be reached in the second half of 2026, and a planned early interim analysis for OS is expected to take place in conjunction with the primary PFS analysis.
Source filing

ivonescimab — PDUFA

Nov 14

HARMONi is a Phase III clinical trial evaluating ivonescimab combined with chemotherapy compared to placebo plus chemotherapy in patients with EGFR-mutated, locally advanced or metastatic non-squamous NSCLC who were previously treated with a third-generation EGFR TKI (e.g., osimertinib).
Source filing

ivonescimab — Topline data

H1 2027

At present time, Summit expects to complete enrollment in the non-squamous cohort of HARMONi-3 in the second half of 2026 and expects to reach the prespecified number of events for the PFS primary endpoint analysis for this cohort in the first half of 2027.
Source filing

ivonescimab — Initial data

mid-2027

Data from the study under this collaboration agreement is expected to be generated by mid-2027.
Source filing

ivonescimab — Conference presentation

Oct 25

Detailed results from HARMONi-GI1 will be presented at the European Society for Medical Oncology 2026 Congress (ESMO 2026) on Sunday, October 25, during the Presidential Symposium from 4:30pm – 6:15pm CET (11:30am – 1:15pm EDT).
Source filing

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