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ACTIVE NOT RECRUITING
NCT05266105
PHASE1

A Phase 1 Study of Oral OP-1250 in Combination With Palbociclib in HR+/HER2- Breast Cancer Patients

Sponsor: Olema Pharmaceuticals, Inc.

View on ClinicalTrials.gov

Summary

This is an open-label, Phase 1b dose escalation and expansion study to determine the maximum tolerated dose (MTD) of OP-1250 in combination with palbociclib (Ibrance®️, Pfizer Inc.). Purpose of study is to evaluate the safety and pharmacokinetic (PK) profile, and estimate the preliminary anti-tumor activity of the combination in adult subjects with hormone receptor-positive (ER+ / HER2-) advanced or metastatic breast cancer (MBC).

Official title: A Phase 1 Dose Escalation and Expansion Open-label, Multicenter, Study of OP-1250 in Combination With the CDK4/6 Inhibitor Palbociclib in Adult Subjects With Advanced or Metastatic HR-positive, HER2-negative Breast Cancer

Key Details

Gender

All

Age Range

18 Years - Any

Study Type

INTERVENTIONAL

Enrollment

60

Start Date

2021-12-10

Completion Date

2026-03

Last Updated

2025-11-24

Healthy Volunteers

No

Conditions

Interventions

DRUG

Palazestrant

Complete Estrogen Receptor Antagonist

DRUG

Palbociclib

Palbociclib is an approved CDK 4/6 Inhibitor drug

Locations (8)

Clinical Trial Site

Waratah, New South Wales, Australia

Clinical Trial Site

Westmead, New South Wales, Australia

Clinical Trial Site

South Brisbane, Queensland, Australia

Clinical Trial Site

Southport, Queensland, Australia

Clinical Trial Site

Clayton, Victoria, Australia

Clinical Trial Site

Frankston, Victoria, Australia

Clinical Trial Site

Geelong, Victoria, Australia

Clinical Trial Site

Nedlands, Western Australia, Australia