A Multiple-dose Study of ASP8374, an Immune Checkpoint Inhibitor, as a Single Agent and in Combination With Pembrolizumab in Subjects With Advanced Solid Tumors

Advanced Solid Tumors Clinical Trial

Official title: A Phase 1b Study of ASP8374, an Immune Checkpoint Inhibitor, as a Single Agent and in Combination With Pembrolizumab in Subjects With Advanced Solid Tumors

Status Completed

Clinical Trial Summary

The primary purpose of this study is to evaluate the tolerability and safety profile of ASP8374 when administered as a single agent and in combination with pembrolizumab in participants with locally advanced (unresectable) or metastatic solid tumor malignancies. Also primary purpose is to characterize the pharmacokinetic profile of ASP8374 when administered as a single agent and in combination with pembrolizumab. Last primary purpose of this study is to determine the recommended Phase 2 dose (RP2D) of ASP8374 when administered as a single agent and in combination with pembrolizumab.

The secondary purpose of this study is to evaluate the anti-tumor effect (objective response rate [ORR], duration of response [DOR], persistence of response after discontinuation, and disease control rate [DCR]) of ASP8374 when administered as a single agent and in combination with pembrolizumab.

NTP: Neutropenia

NHAE:Non-haematological AE

GBS: Guillain-Barré syndrome""

IRR: Infusion-related reaction

AST: Aspartate aminotransferase

ALT: Alanine aminotransferase

MS/MG: Myasthenia Syndrome/Myasthenia Gravis

TRT: Treatment-related Toxicity

TCP: Thrombocytopenia

Clinical Trial Description

This is a multi-center, multiple-dose, dose-escalation and expansion study of ASP8374 as a single agent and in combination with pembrolizumab. After discontinuation of study drug treatment (initial treatment and re-treatment), all participants will complete an end of treatment visit along with 30-day and 90-day safety follow-up visits from the last dose of ASP8374. Participants will be enrolled in respectively escalation cohorts or expansion cohorts. The 90-day safety follow-up visit is optional for participants who discontinue due to progressive disease or initiate new anticancer treatment after the last dose of study drug.

Escalation cohorts: Approximately 60 participants may be enrolled in the escalation cohorts (approximately 30 participants for monotherapy and 30 participants for combination therapy).

Expansion cohorts: The total number of subjects in the expansion cohorts will depend on the observed pharmacokinetic and antitumor activity. It is estimated that approximately 240 participants may be enrolled in the monotherapy and combination therapy expansion cohorts.

As the number of participants in the escalation cohorts and the expansion cohorts will depend on the observed Dose Limiting Toxicity (DLT), pharmacokinetics and antitumor activity, approximately 300 participants are expected to be enrolled. ;

Related Conditions & MeSH terms

• Advanced Solid Tumors
• Neoplasms

• NCT number: NCT03260322
• Study type: Interventional
• Source: Astellas Pharma Inc
• Status: Completed
• Phase: Phase 1
• Start date: September 8, 2017
• Completion date: May 10, 2022