Promising combo for lymphoma hits early snag – trial stopped

NCT ID NCT03919175

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This phase 2 study tested umbralisib (a PI3K blocker) plus rituximab (an antibody that targets B-cells) as the first treatment for people with follicular or marginal zone lymphoma. The goal was to see how many patients had their tumors disappear completely. Only 18 people enrolled before the study was terminated, so the results are too limited to draw firm conclusions.

What this could mean

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

Active substance

Umbralisib and rituximab

What this could lead to

If it works, this combination could offer a new first-line treatment option for these slow-growing lymphomas, potentially improving response rates.

What could go wrong

This trial was terminated early with only 18 participants, so results are very limited. It is unclear if the combination is safe or effective long-term.

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.

follicular lymphoma lymphoma Lymphoma, B-Cell, Marginal Zone marginal zone lymphoma

As listed by the trial registrant

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

Contacts and locations

Locations

  • Beth Israel Deaconness Medical Center

    Boston, Massachusetts, 02215, United States

  • Massachusetts General Hospital Cancer Center

    Boston, Massachusetts, 02114, United States