ArticleCommunications medicine2026
Pembrolizumab and epigenetic modification with azacitidine reshapes the tumor microenvironment of platinum-resistant epithelial ovarian cancer: a phase 2 non-randomized clinical trial.
Article in Communications medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02900560 (Phase II Randomized Study of Pembrolizumab With or Without Epigenetic Modulation With CC-486 in Patients With Platinum-resistant Epithelial Ovarian, Fallopian Tube or Primary Peritoneal Cancer), which is not on this map. Cited by 2 papers, 1 of them a synthesis that pooled it.
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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.
Phase II Randomized Study of Pembrolizumab With or Without Epigenetic Modulation With CC-486 in Patients With Platinum-resistant Epithelial Ovarian, Fallopian Tube or Primary Peritoneal Cancer
Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Immune checkpoint inhibitor-based combination therapy for platinum-resistant or platinum-refractory recurrent ovarian cancer: a systematic review and meta-analysis of prospective trials.Frontiers in oncology · 2026Pooled it
- The therapeutic potential of transposable element activity modulation.EMBO molecular medicine · 2026Review
Corrections and comments
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Authors and funding
17 authors.
Funding
Abstract
backgroundEpigenetic modulators may sensitize platinum-resistant ovarian cancer (PROC) to immune checkpoint inhibition by reprogramming the tumor microenvironment.
methodsWe report clinical and translational findings from a phase II non-randomized study of pembrolizumab and oral azacitidine in 34 women with PROC (NCT02900560). Key eligibility criteria included age 18 years or older, performance status of 0-1, measurable disease, platinum-resistant disease and histologically confirmed epithelial ovarian cancer, fallopian tube carcinoma or primary peritoneal carcinoma. Primary endpoints included safety, tolerability, overall response rate (ORR) and disease control rate (DCR). Secondary endpoints included CA-125 response. The effect of combined epigenetic and immunotherapy was evaluated by transcriptomic analyses of 72 serially biopsied tumors.
resultsWe show that the combination is moderately well tolerated and most common grade 3-4 adverse events are gastrointestinal side effects and anemia. ORR is 2.9% and DCR is 50%; with 3 of the 27 evaluable patients attaining a CA-125 response. Differential gene expression analyses reveal an upregulation of inflammatory and cytolytic genes and co-inhibitory checkpoints 6 weeks on-therapy. Upregulation of interferon signaling, antigen presentation and immune cell adhesion and migration gene sets are prominent on-therapy, together with an increase in density of CD8 + T-cells. Patients with a CA-125 and/or clinical response show an enrichment of adaptive and conserved immune response gene sets on-therapy.
conclusionsOur findings highlight the potential of epigenetic modulators to re-shape the tumor microenvironment of PROC toward a more inflammed phenotype and may point to approaches to augment immunotherapy response.
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Registered trials
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