Summit Therapeutics
A Randomized, Open-Label, Multicenter, Phase 2/3 Clinical Study of Ivonescimab in Combination with Enfortumab Vedotin vs Pembrolizumab in Combination with Enfortumab Vedotin in Previously Untreated Locally Advanced or Metastatic Urothelial Carcinoma (HARMONi-GU1)
This Phase 2/3 study will be conducted in 2 parts. The first part is a Phase 2 randomized, open-label, 2 dose levels, parallel-arm study with the primary objective to evaluate safety and identify the recommended Phase 3 dose (RP3D) of ivonescimab in combination with EV. The second part is a randomized, open-label Phase 3 study with the primary objective to evaluate the efficacy and safety of ivonescimab (RP3D) plus EV versus pembrolizumab plus EV in patients with previously untreated LA/mUC. For Phase 2 portion, patients will be randomized 1:1 to two arms consisting of 2 different dosages of…
Inclusion Criteria: * 18 years and older * ECOG 0-1 * Life expectancy ≥ 6 months * Histologically documented unresectable LA/mUC (transitional cell carcinoma) of the bladder, renal pelvis, ureter, or urethra with ≥50% urothelial carcinoma component * No prior systemic therapy for LA/mUC * At least one measurable non-cerebral lesion according to RECIST v1.1 * Adequate organ function Exclusion Criteria: * Locally advanced disease that is resectable or suitable for local therapy with curative intent. * Tumors containing any small cell or neuroendocrine differentiation * Ongoing sensory or moto…
First ivonescimab dose to be tested in Phase 2
Standard of care therapy
200 mg
Second Ivonescimab dose to be tested in Phase 2 part of the study
Recommended Phase 3 dose of Ivonescimab after Phase 2 data analysis