Trial reportCancer2025
Olaparib in treatment-refractory isocitrate dehydrogenase 1 (IDH1)- and IDH2-mutant cholangiocarcinoma: Safety and antitumor activity from the phase 2 National Cancer Institute 10129 trial.
Trial report in Cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed.
- Circulating tumor DNA-based detection of molecular residual disease in isocitrate dehydrogenase-mutant cholangiocarcinoma for biomarker-guided therapy.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026Review
- LIPT1 loss confers replication stress and PARP inhibitor sensitivity through PrimPol-mediated ssDNA gaps.Science advances · 2026Article
- Article
- Immunometabolism: crosstalk with tumor metabolism and implications for cancer immunotherapy.Molecular cancer · 2025Review
- The distinct landscape of tumor immune microenvironment in homologous recombination deficient cancers.Biomarker research · 2025Review
- Biomarkers and Management of Cholangiocarcinoma: Unveiling New Horizons for Precision Therapy.Cancers · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
30 authors.
Funding
Abstract
backgroundNeomorphic isocitrate dehydrogenase (IDH) mutations lead to the accumulation of 2-hydroxyglutarate (2-HG), an oncometabolite implicated in tumor progression via inhibitory effects on alpha-ketoglutarate. Moreover, mutant IDH-dependent accumulation of 2-HG results in homologous recombination deficiency (HRD), which preclinically renders tumors sensitive to poly(adenosine diphosphate ribose) polymerase inhibitors. Here, the results of the cholangiocarcinoma (CCA) arm of the National Cancer Institute (NCI) 10129 olaparib in IDH-mutant solid tumors basket trial are reported.
methodsOlaparib 300 mg twice daily was evaluated in an open-label, phase 2 clinical trial for treatment-refractory IDH-mutant solid tumors. Patients in the IDH-mutant CCA arm enrolled in two cohorts: (1) IDH inhibitor (IDHi) pretreated and (2) IDHi untreated, with a primary end point of overall response rate.
resultsNCI 10129 enrolled 30 patients with IDH-mutant CCA with no objective responses seen, and recruitment was closed early. Median progression-free survival (PFS) was 2.4 months (95% CI, 1.9 to 6.5 months) and median overall survival was 12.9 months (95% CI, 6.3 months to not reached). Eight patients (27%) had clinical benefit (CB), with a PFS of ≥6 months. Patients with CB had lower baseline 2-HG levels compared to those without CB (1.4 vs. 5.9 µmol/L; p = .01).
conclusionsOlaparib does not have sufficient single-agent activity to warrant further development in IDH-mutant CCA. However, a subgroup of patients demonstrated CB, and exploratory analysis revealed this subgroup to be enriched for lower baseline 2-HG levels. Future clinical trials leveraging the HRD properties of IDH mutations are warranted with enhanced patient selection and novel combination therapies.
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