Clinical trialNCT06948786RecruitingPhase 2Interventional

Pirtobrutinib and Mosunetuzumab for the Treatment of Relapsed/Refractory Grades 1-3A Follicular Lymphoma, PROMOTE-FL Trial

SponsorUniversity of WashingtonEnrollment22Grade 1 Follicular LymphomaGrade 2 Follicular LymphomaGrade 3a Follicular LymphomaRecurrent Follicular LymphomaRefractory Follicular Lymphoma

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This phase II trial tests how well pirtobrutinib and mosunetuzumab work in treating patients with grade 1-3a follicular lymphoma (FL) that has come back after a period of improvement (relapsed) or that has not responded to previous treatment (refractory). Pirtobrutinib, a type of tyrosine kinase inhibitor, works by blocking the action of the Bruton tyrosine kinase (BTK) protein. The BTK protein signals cancer cells to multiply, and blocking it may help keep cancer cells from growing. It could also improve T cell fitness and decrease inflammation, therefore, may improve the efficacy and safety of T cell-based therapies, such as mosunetuzumab. Mosunetuzumab is a bispecific antibody that binds both T cells and the lymphoma cancer cells and harnesses T cells to interfere with the ability of cancer cells to grow and spread. Giving pirtobrutinib and mosunetuzumab together may kill more tumor cells in patients with relapsed or refractory grade 1-3a FL and potentially decreases some side effects of mosunetuzumab which are related to T cells being activated (e.g., cytokine release syndrome).

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Investigators

The overall officials registered on this study. Names that resolve to a FindMyKOL profile link to it; the rest are shown as registered.

Mengyang Di, MD, PhD
Fred Hutch/University of Washington Cancer Consortium
Principal Investigator
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A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

Fred Hutch/university of Washington Cancer Consortium
Seattle, Washington, United States
Mengyang Di, MD, PhD
Recruiting

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Mosunetuzumab →Pirtobrutinib →

Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 17 Nov 2025
Primary completion: 31 Jul 2031
Completion: 31 Jul 2031
Last update posted: 4 Jun 2026
Registered enrollment: 22
Registry id: NCT06948786

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 4 Nov 2026. Registry facts are shown as registered by the study sponsor; FindMyKOL does not interpret them.