Trials / Active Not Recruiting

Active Not RecruitingNCT05432791

Testing Olaparib and Temozolomide Versus the Usual Treatment for Uterine Leiomyosarcoma After Chemotherapy Has Stopped Working

A Randomized Phase 2/3 Study of Olaparib Plus Temozolomide Versus Investigator's Choice for the Treatment of Patients With Advanced Uterine Leiomyosarcoma After Progression on Prior Chemotherapy

Status: Active Not Recruiting
Phase: Phase 2 / Phase 3
Study type: Interventional
Enrollment: 74 (actual)

Sponsor: National Cancer Institute (NCI) · NIH
Sex: All
Age: 18 Years
Healthy volunteers: Not accepted

Summary

This phase II/III trial compares the effect of the combination treatment with olaparib and temozolomide to trabectedin or pazopanib (two of the most common chemotherapy drugs used as usual approach) in patients with uterine leiomyosarcoma that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced) after initial chemotherapy has stopped working. The usual approach is defined as care most people get for advanced uterine leiomyosarcoma. Olaparib is a PARP inhibitor. PARP is a protein that helps repair damaged deoxyribonucleic acid (DNA). Blocking PARP may prevent tumor cells from repairing their damaged DNA, causing them to die. PARP inhibitors are a type of targeted therapy. Temozolomide is in a class of medications called alkylating agents. It works by slowing or stopping the growth of tumor cells in the body. The combination of olaparib and temozolomide may work better than the usual treatment in shrinking or stabilizing advanced uterine leiomyosarcoma after initial chemotherapy has stopped working.

Detailed description

PRIMARY OBJECTIVES: I. To compare the progression free survival (PFS) of olaparib plus temozolomide (Arm 1) as compared to investigator's choice (trabectedin or pazopanib hydrochloride \[pazopanib\]) (Arm 2) for the treatment of patients with advanced uterine leiomyosarcoma (uLMS) who have received two or more prior lines of therapy as determined by investigator (local site) assessment. (Phase 2) II. To compare the overall survival (OS) of olaparib plus temozolomide (Arm 1) as compared to investigator's choice (trabectedin or pazopanib) (Arm 2) for the treatment of patients with advanced uLMS who have received two or more prior lines of therapy. (Phase 3) SECONDARY OBJECTIVES: I. To evaluate the safety and tolerability of each treatment by determining adverse events using Common Terminology Criteria for Adverse Events (CTCAE) version 5 and patient-reported toxicity using Patient-Reported Outcome (PRO)-CTCAE version 1 in and across each treatment arm. (Phase 2/3) II. To evaluate the objective response rate (ORR), duration of response (DOR) and disease control rate (DCR) in and across each treatment arm as determined by investigator assessment. (Phase 2/3) OUTLINE: Patients are randomized to 1 of 2 arms. ARM 1: Patients receive temozolomide orally (PO) once daily (QD) on days 1-7 of each cycle and olaparib PO twice daily (BID) on days 1-7 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients undergo computed tomography (CT) scan or magnetic resonance imaging (MRI) and/or bone scans throughout the trial. Patients also undergo collection of blood samples throughout the trial. ARM 2: Patients receive trabectedin intravenously (IV) continuously over 24 hours on day 1 of each cycle or pazopanib PO QD on days 1-21 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients undergo CT scan or MRI and/or bone scans throughout the trial. Patients also undergo transthoracic echocardiography (TTE) or multi-gated acquisition scan (MUGA) on study and as clinically indicated, as well as collection of blood samples throughout the trial. After completion of study treatment, patients without disease progression are followed every 6 weeks until disease progression. After disease progression, patients are followed every 3 months for the first 2 years, then every 6 months thereafter until 5 years post-randomization or death, whichever comes first.

Conditions

Interventions

Type	Name	Description
PROCEDURE	Biospecimen Collection	Undergo collection of blood samples
PROCEDURE	Bone Scan	Undergo bone scan
PROCEDURE	Computed Tomography	Undergo CT scan
PROCEDURE	Magnetic Resonance Imaging	Undergo MRI
PROCEDURE	Multigated Acquisition Scan	Undergo MUGA
DRUG	Olaparib	Given PO
DRUG	Pazopanib	Given PO
DRUG	Temozolomide	Given PO
DRUG	Trabectedin	Given IV
PROCEDURE	Transthoracic Echocardiography Test	Undergo TTE

Timeline

Start date: 2023-03-30
Primary completion: 2024-08-13
Completion: 2027-01-30
First posted: 2022-06-27
Last updated: 2026-04-08
Results posted: 2026-04-08

Locations

145 sites across 2 countries: United States, Puerto Rico

Regulatory

FDA-regulated drug study

Source: ClinicalTrials.gov record NCT05432791. Inclusion in this directory is not an endorsement.