Study to Assess the Effects of GS-3583 in Participants With Advanced Solid Tumors

Summary

This study is planned to be conducted in 2 parts: Part 1: Dose Escalation and Part 2: Safety Run-In and Randomized Expansion. The primary objectives of Part 1 are 1) To characterize the safety and tolerability of GS-3583 as monotherapy in participants with advanced solid tumors. 2) To determine the maximum tolerated dose (MTD) or recommended Phase 2 dose (RP2D) of GS-3583 as monotherapy in participants with advanced solid tumors. The primary objectives of Part 2 is to assess the safety and tolerability and to determine the RP2D of GS-3583 in combination with zimberelimab (ZIM) and platinum (cisplatin or carboplatin) + 5-fluorouracil (5-FU) chemotherapy in participants with head and neck squamous cell carcinoma (HNSCC) (Cohort A) or in combination with docetaxel in participants with non-small cell lung cancer (NSCLC) (Cohort B).

Timeline

Start

2021-03-25

Primary completion

2022-11-07

Completion

2022-11-07

Publications

• Results Brody J, Thompson JA, Tolcher AW, Kuhne MR, Huang XR, et al. Phase 1b Dose Escalation Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of GS3583, a FLT3 Agonist Fc Fusion Protein, in Patients With Advanced Solid Tumors [Poster TPS3147]. J Clin oncol 2021 June; 39 (15_suppl).
• Results Tolcher AW, Brody J, Rajakumaraswamy N, Lakhani NJ, Kuhne MR, Trowe T, et al. Phase 1b study of GS-3583, a novel FLT3 agonist Fc fusion protein, in patients with advanced solid tumors. [Poster TPS2566]. J Clin oncol 2022 June; 40 (16_suppl).
• Results Dauki AM, Jones A, Singh I, Rajakumaraswamy N, Qin A, et al. Population pharmacokinetics of GS-3583 in healthy volunteers and patients with advanced solid tumors [Poster II-083]. Clin Pharmacol Ther 2023 March; 113 (S5-S100).

Drugs

Indications