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Completed Phase 1 Interventional

First-in-Human Study of RLY-5836 in Advanced Breast Cancer and Other Solid Tumors

ClinicalTrials.gov ID: NCT05759949

Public ClinicalTrials.gov record NCT05759949. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 22, 2026, 9:35 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A First-in-Human Study of PI3Kα Inhibitor, RLY-5836, in Combination With Targeted and Endocrine Therapies in Participants With Advanced Breast Cancer and as a Single Agent in Advanced Solid Tumors

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This is a Phase 1, first-in-human, open-label study designed to evaluate the maximum tolerated dose (MTD), recommended phase 2 dose (RP2D), safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary anti-tumor activity of RLY-5836 in advanced solid tumors in participants harboring a PIK3CA mutation in blood and/or tumor per local assessment. The study consists of 2 parts, a dose escalation (Part 1) and a dose expansion (Part 2).

Study identification

NCT ID
NCT05759949
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1
Lead sponsor
Relay Therapeutics, Inc.
Industry
Enrollment
41 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Mar 29, 2023 (Actual)
Primary completion
Mar 18, 2025 (Actual)
Completion
Apr 11, 2025 (Actual)
Last update posted
May 16, 2025

2023 – 2025

United States locations

U.S. sites
7
U.S. states
7
U.S. cities
7
Facility City State ZIP Site status
Sarah Cannon Research Institute at Florida Cancer Specialists Orlando Florida 32827 —
Community Cancer Center North Indianapolis Indiana 46250 —
Massachusetts General Hospital Boston Massachusetts 02114 —
Rutgers Cancer Institute of New Jersey New Brunswick New Jersey 08903 —
Memorial Sloan Kettering Cancer Center-Main Campus New York New York 10065 —
Tennessee Oncology, PLLC Nashville Tennessee 37203 —
Huntsman Cancer Institute, University of Utah Salt Lake City Utah 84112 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05759949, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 16, 2025 · Synced Oct 22, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT05759949 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →