Trial reportJournal of gynecologic oncology2026
A phase II basket trial of Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors (DART) SWOG S1609: vaginal cancer sub cohort results.
Trial report in Journal of gynecologic oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02834013 (DART), which is not on this map. Not yet cited in PubMed.
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The trial behind it
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DART: Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors
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Authors and funding
19 authors.
Funding
Abstract
objectiveThe SWOG S1609 Dual Anti-CTLA-4 & Anti-PD-1 blockade in Rare Tumors (DART) trial is the first basket study to include a sub-cohort assessing ipilimumab and nivolumab in patients with primary vaginal cancers with differing histology.
methodsDART is a prospective, open-label, multicenter, multi-cohort phase II clinical trial of ipilimumab (1 mg/kg intravenously) 6 weekly plus nivolumab (240 mg intravenously) 2 weekly across multiple rare tumor cohorts, with the vagina cohort (any vaginal histology) reported here. The primary endpoint was objective response rate (ORR) per RECISTv1.1; progression-free survival (PFS), overall survival (OS), clinical benefit rate (CBR; overall response plus stable disease [SD] ≥6 months), and toxicity are secondary endpoints.
resultsSeven evaluable patients (median age, 60 years; performance status 0-1; no prior exposure to immunotherapy) were analyzed, of whom 3 had adenocarcinoma, 2 had squamous cell carcinoma (SCC), one had small-cell carcinoma and one had undifferentiated histology. The ORR was 29%, with 1 patient (14%) with undifferentiated histology achieving complete response (lasting 14.8 months) and 1 patient with SCC histology (14%) attaining a partial response (lasting 45.2 months). The CBR was 43%. The 6-month PFS rate was 43% and the median OS was 11.7 months. Five patients (71.4%) experienced an adverse event (AE) with 4 (57.1%) having grade 3-4 AE's.
conclusionIpilimumab plus nivolumab showed efficacy (ORR was 29% and CBR of 43%) and durability (one patient with prolonged SD >6 months) in a sub cohort of patients with vaginal cancer of differing histology without new safety signals.
trial registrationClinicalTrials.gov Identifier: NCT02834013.
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