Trial reportCancer2021
A phase II basket trial of Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors (DART) SWOG S1609: High-grade neuroendocrine neoplasm cohort.
Trial report in Cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.
What it found
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
74 citing papers in PubMed, 1 synthesis or guideline pooled it, 108 citations in OpenAlex.
- Unlocking the Potential: A Systematic Review of Master Protocol in Pediatrics.Therapeutic innovation & regulatory science · 2024Pooled it
- Phase 2 study of cabozantinib (XL184) with nivolumab and ipilimumab for the treatment of poorly differentiated neuroendocrine carcinomas (ETCTN10315).The oncologist · 2026Trial
- Multicenter phase II trial of ipilimumab and nivolumab in metastatic or unresectable perivascular epithelioid cell tumor (PEComa): a substudy ofJournal for immunotherapy of cancer · 2025Trial
- A phase II basket trial of dual anti-CTLA-4 and anti-PD-1 blockade in rare tumors (DART) SWOG S1609: durable responses and delayed pseudoprogression in small cell carcinoma of the ovary, hypercalcemic type cohort.Cancer communications (London, England) · 2025Trial
- Phase II basket trial of Dual Anti-CTLA-4 and anti-PD-1 blockade in Rare Tumors (DART) SWOG S1609: pancreatic neuroendocrine neoplasm (PNEN) cohort.Journal for immunotherapy of cancer · 2025Trial
- A Phase II Basket Trial of Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors SWOG S1609: Vulvar Cancers.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025Trial
- SWOG/NCI Phase II Dual Anti-CTLA-4/PD-1 Blockade in Rare Tumors: Nonepithelial Ovarian Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2024Trial
- Phase II basket trial of dual anti-CTLA-4 and anti-PD-1 blockade in rare tumors (DART) SWOG S1609: the desmoid tumors.Journal for immunotherapy of cancer · 2024Trial
- Phase II basket trial of Dual Anti-CTLA-4 and Anti-PD-1 blockade in Rare Tumors (DART) SWOG S1609: adrenocortical carcinoma cohort.Journal for immunotherapy of cancer · 2024Trial
- A Phase II Basket Trial of Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors (DART SWOG 1609 Cohort 47) in Patients with Gestational Trophoblastic Neoplasia.Clinical cancer research : an official journal of the American Association for Cancer Research · 2024Trial
- Pembrolizumab alone and pembrolizumab plus chemotherapy in previously treated, extrapulmonary poorly differentiated neuroendocrine carcinomas.British journal of cancer · 2023Trial
- Novel clinical trial design and analytic methods to tackle challenges in therapeutic development in rare diseases.Annals of translational medicine · 2022Trial
- Tumour-agnostic immunotherapy: aligning biological rationale, biomarker precision, and real-world implementation.EClinicalMedicine · 2026Review
- What are the Unmet Needs in Managing Digestive Neuroendocrine Carcinomas?Current oncology reports · 2026Review
- Novel genomic score predicts survival with immune checkpoint inhibition in neuroendocrine neoplasms.The oncologist · 2026Article
- Single-Cell and Spatial Transcriptomics Reframe the Immunosuppressive Microenvironment of Neuroendocrine Neoplasms.Cancers · 2026Review
- Phase II Trial of First-Line Durvalumab and Chemotherapy in Patients With Extra-Pulmonary Small Cell Carcinoma.JTO clinical and research reports · 2026Article
- Efficacy and CNS Toxicity of Nivolumab and Ipilimumab in Rare Cancer Brain Metastases: A Multicenter Basket Trial Analysis (NCI/SWOG S1609).Clinical cancer research : an official journal of the American Association for Cancer Research · 2026Article
- Article
- Advances in Systemic Therapy for Metastatic Pancreatic Neuroendocrine Neoplasms.Current treatment options in oncology · 2026Review
14 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
15 authors at 9 institutions in 1 country.
Funding
Abstract
backgroundThe authors previously reported the results of the nonpancreatic neuroendocrine neoplasm cohort of the SWOG S1609 DART (Dual Anti-CTLA-4 and Anti-PD-1 Blockade in Rare Tumors) trial, which permitted all histologic grades and had a 44% overall response rate (ORR) among patients with high-grade disease. Here they sought to validate their findings in a dedicated prospective cohort of high-grade neuroendocrine neoplasms within S1609.
methodsA prospective, open-label, multicenter, phase 2 clinical trial of ipilimumab plus nivolumab was conducted across multiple rare tumor cohorts. The dedicated, high-grade neuroendocrine neoplasm cohort was examined here. The primary end point was the ORR according to version 1.1 of the Response Evaluation Criteria in Solid Tumors. Secondary end points included progression-free survival (PFS), overall survival (OS), and toxicity.
resultsNineteen patients with high-grade neuroendocrine neoplasms (defined by local pathology review) were enrolled in this cohort of S1609. The most common primary sites were unknown primaries (21%), which were followed by the rectum, gastroesophageal junction, cervix, and pancreas (11%). The median number of lines of prior therapy was 1 (range, 0-3). All patients were microsatellite-stable. The median Ki-67 value was 80%. The ORR was 26% (95% confidence interval [CI], 11%-45%), and the clinical benefit rate (stable disease for ≥6 months plus partial responses plus complete responses) was 32% (95% CI, 13%-57%). The 6-month PFS rate was 32% (95% CI, 16%-61%) with a median PFS of 2.0 months (95% CI, 1.8 months to ∞) and a median OS of 8.7 months (95% CI, 6.1 months to ∞). The most common toxicities were fatigue (32%) and rash (26%), and the most common grade 3/4 immune-related adverse event was rash (15%); there were no events that required treatment discontinuation and no grade 5 events.
conclusionsIpilimumab plus nivolumab demonstrated a 26% ORR in patients with high-grade neuroendocrine neoplasms, with durable responses seen in patients with refractory disease.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.