Cancer combo trial halted early – what went wrong?

NCT ID NCT04779151

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This phase 2 trial tested a combination of two drugs, niraparib and dostarlimab, in 51 adults with advanced solid tumors that had DNA repair defects or were sensitive to platinum chemotherapy. The goal was to see if the combo could shrink tumors. However, the study was terminated early, so we have limited data on its effectiveness or safety.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

niraparib and dostarlimab

What this could lead to

If successful, this combination could offer a new treatment option for certain hard-to-treat cancers with DNA repair problems.

What could go wrong

The trial was terminated early, so results are limited. It was a small, early-phase study, and the combination may cause significant side effects.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

biliary tract cancer Biliary Tract Neoplasms bladder transitional cell carcinoma gastric adenocarcinoma gastroesophageal adenocarcinoma gastroesophageal junction adenocarcinoma head and neck cancer Head and Neck Neoplasms nonpapillary renal cell carcinoma pancreatic ductal adenocarcinoma renal cell carcinoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Gustave Roussy

    Villejuif, Val de Marne, 94800, France