Last updated on February 2020

Olaparib in Treating Patients With Advanced Glioma Cholangiocarcinoma or Solid Tumors With IDH1 or IDH2 Mutations


Brief description of study

This phase II trial studies how well olaparib works in treating patients with glioma, cholangiocarcinoma, or solid tumors with IDH1 or IDH2 mutations that have spread to other places in the body (metastatic) and usually cannot be cured or controlled with treatment (refractory). Olaparib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Detailed Study Description

PRIMARY OBJECTIVE:

I. To estimate the overall response rates of olaparib in subjects with recurrent/progressive IDH1/2-mutant solid tumors, who will be recruited to 3 cohorts: a. glioma, b. cholangiocarcinoma, c. other solid malignant tumors.

SECONDARY OBJECTIVES:

I. To estimate the distribution of progression free survival (PFS) of olaparib in adults with recurrent/progressive IDH1/2-mutant glioma and cholangiocarcinoma.

II. To estimate the overall survival (OS) in adults with recurrent/progressive IDH1/2- mutant glioma and cholangiocarcinoma.

III. To determine the duration of response in adults with recurrent/progressive IDH1/2-mutant glioma, cholangiocarcinoma or other solid malignant tumors.

IV. To confirm the safety and tolerability of olaparib monotherapy.

EXPLORATORY OBJECTIVES:

I. To describe 2HG concentration in plasma by mass spectrometry at baseline and at specific timepoints and correlate with treatment response.

II. To describe 2HG levels in tumor biopsies from prior to the beginning of treatment and at specific timepoints and correlate with treatment response.

III. To evaluate in tumor biopsies and in liquid biopsies performed at baseline and at specific timepoints if co-occurring alterations detected via multiplexed immunofluorescence, mass cytometry (CyTOF)-imaging mass cytometry (IMC), ribonucleic acid (RNA) sequencing and/or deoxyribonucleic acid (DNA) sequencing can be associated with differential levels of 2HG production, treatment response and resistance.

OUTLINE

Patients receive olaparib orally (PO) twice daily (BID) on days 1-28. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for 30 days.

Clinical Study Identifier: NCT03212274

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