# Agnostic Therapy in Rare Solid Tumors

Source: https://onco.cc/trials/nct06638931/  
OnCo record `nct06638931` (Trial). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

A phase 2 trial of nivolumab in gallbladder cancer and other biliary tract cancers, run by Instituto do Cancer do Estado de São Paulo, now recruiting.

## Summary

Agnostic Therapy in Rare Solid Tumors is a phase 2 interventional study registered as NCT06638931 by Instituto do Cancer do Estado de São Paulo, with a registry enrolment figure of 28 participants, started 2024-07-16 and due to reach its primary completion in 2026-07. Interventions recorded: Nivolumab. Conditions listed: 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. Sites: Brazil. No results are recorded here; the registry entry is the source.

## Fields

- Kind: Trial
- Status: recruiting
- Last checked: 2026-09-24
- Also known as: ANTARES
- Tags: ctgov-ingest; gallbladder-deep-dive
- Registry id: NCT06638931
- Phase: 2
- Setting: Phase II Basket Study to Evaluate the Tissue-agnostic Efficacy of Anti-Programmed Cell Death Protein 1 (Anti-PD1) Monoclonal Antibody in Patients With Advanced Rare Tumors
- Sponsor: Instituto do Cancer do Estado de São Paulo
- Enrolled: 28

## Sources

- ClinicalTrials.gov NCT06638931: https://clinicaltrials.gov/study/NCT06638931

## Connected records

- cancers: [Biliary tract cancer (all types)](https://onco.cc/cancers/biliary-tract-cancer/), [Biliary tract cancer (cholangiocarcinoma)](https://onco.cc/cancers/cholangiocarcinoma/), [Gallbladder cancer](https://onco.cc/cancers/gallbladder/)
- technologies: [Immune checkpoint inhibitors](https://onco.cc/technologies/checkpoint-inhibitor/)
- drugs: [Nivolumab](https://onco.cc/drugs/nivolumab/)
- terms: [Gallbladder cancer in biliary tract cancer trials (eligibility and subgroups)](https://onco.cc/terms/gallbladder-cancer-in-biliary-trials/)

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