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Clinical trialCLINICALTRIALSWednesday, April 15, 2026 · April 15, 2026

Trial Now Recruiting: Agnostic Therapy in Rare Solid Tumors (NCT06638931)

WHY IT MATTERS

If you have one of the 43 rare tumor types listed and your cancer has high PD-L1 expression, this trial offers access to an immunotherapy that may work regardless of where your cancer started.

Researchers are testing a cancer drug called nivolumab in patients with rare tumors that have a specific marker called PD-L1. This is a Phase 2 trial that will include up to 28 patients with many different types of rare cancers who haven't responded well to standard treatments. The study will last up to 12 months and measure how well the drug works.

NCT ID: NCT06638931 Status: RECRUITING Conditions: Urachal Cancer, Parathyroid Carcinoma, Fibrolamellar Carcinoma, Angiosarcoma, Secretory Carcinoma of Breast, Anal Neoplasms, Metaplastic Breast Carcinoma, Translocation Renal Cell Carcinoma, Carcinosarcoma, Small Intestine Neoplasms, Cholangiocarcinoma, Sertoli-Leydig Cell Tumor, Adenoid Cystic Carcinoma, Mesothelioma, Neuroblastoma, Adrenal Gland Neoplasms, Penile Neoplasms, Apocrine Carcinoma, Fibrosarcoma, Cancer of Unknown Primary, Hemangioblastoma, Thyroid Neoplasms, Hepatoblastoma, Fallopian Tube Neoplasms, Leiomyosarcoma, Vaginal Neoplasms, Neurofibrosarcoma, Gallbladder Neoplasms, Osteosarcoma, Biliary Tract Neoplasms, Clear Cell Endometrial Cancer, Yolk Sac Tumor, Vulvar Neoplasms, Kaposi Sarcoma, Ovarian Epithelial Cancer, Soft Tissue Sarcoma, Urethral Neoplasms, Granulosa Cell Tumor, Primitive Neuroectodermal Tumor, Neuroendocrine Tumors, Trophoblastic Tumor Phase: PHASE2 Enrollment: 28 Sponsor: Instituto do Cancer do Estado de São Paulo Summary: The ANTARES study is a phase II basket trial designed to evaluate the tissue-agnostic efficacy of the monoclonal anti-PD1 antibody, nivolumab, in patients with advanced or metastatic rare tumors. The study aims to treat rare malignancies with PD-L1 expression (CPS ≥ 10), regardless of the tumor's tissue type or location. Patients who have not responded to standard treatments will be included, and treatment will last for up to 12 months. The study will assess objective response, progression-free

YOU CAN ACT ON THIS

If you have one of the listed rare cancers and have exhausted standard treatments, contact Instituto do Cancer do Estado de São Paulo or search NCT06638931 on clinicaltrials.gov to learn about enrollment requirements and locations.

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immunotherapybasket trialtissue-agnosticpd-l1 positivephase 2

Related conditions

Parathyroid carcinomaAngiosarcoma