NCT07548450 Mosunetuzumab Waldenstrom's macroglobulinaemia refractory Clinical Landscape Report 2026: Design, Endpoints, Sponsor and Readout Outlook
Turn a newly registered trial into a decision-ready clinical landscape. This report examines NCT07548450 using PatSnap Clinical Trials MCP for protocol design and endpoint evidence, with Drug & Asset MCP and Company & Deal Intelligence MCP used as the companion asset and sponsor enrichment workflow. Explore PatSnap MCP Servers to reproduce the research sequence inside an AI workflow.
MCP evidence snapshot: 3 August 2026. Trial records, recruitment status and projected dates can change after the snapshot and should be rechecked before operational decisions.
Why NCT07548450 is a hot trial to watch
Waldenstrom's macroglobulinaemia refractory is being segmented by mechanism, treatment setting, geography and endpoint architecture. NCT07548450 is notable because it evaluates Mosunetuzumab in a Phase 2 design sponsored by University of Utah. The main development question is whether the protocol can translate its rationale into a clinically interpretable and operationally credible readout.
Trial landscape snapshot
| Field | Indexed detail |
|---|---|
| Registration | NCT07548450 |
| Official title | Mosunetuzumab in Combination With Pirtobrutinib in Patients With Relapsed or Refractory Waldenstrom Macroglobulinemia (MPOWER) (MPOWER) |
| Phase / status | Phase 2 / Not yet recruiting |
| Intervention | Mosunetuzumab |
| Sponsor | University of Utah |
| Geography | United States |
| Enrollment | [object Object] |
| Primary endpoint | The recommended phase 2 dose (RP2D) which will be determined based on the rate of dose-limiting toxicities (DLTs) during the DLT evaluation period. |
| Endpoint time frame | 5 years |
| Primary completion / readout proxy | [object Object] |
Protocol design and endpoint interpretation
The purpose of this clinical trial it to test the safety and tolerability of the study drugs mosunetuzumab in combination with pirtobrutinib in patients with relapsed or refractory Waldenstrom's Macroglobulinemia.
Allocation is Non-Randomized, masking is None (Open Label), and the intervention model is Sequential Assignment. Planned enrollment of [object Object] participants across United States shapes statistical precision, execution risk and external validity. Interpretation should account for baseline risk, prior therapy, assessment schedule, missing-data handling and clinical relevance—not only statistical significance.
- The recommended phase 2 dose (RP2D) which will be determined based on the rate of dose-limiting toxicities (DLTs) during the DLT evaluation period. (5 years) — To determine the safety and tolerability of mosunetuzumab in combination with pirtobrutinib.
- Best very good partial response (VGPR) or better per the modified IWWM6 criteria.1 (5 years) — To determine the efficacy of the combination of mosunetuzumab and pirtobrutinib.
Readout outlook and evidence gap
The current protocol points to [object Object] as the best available readout proxy. Because this is an active or newly posted study, a trial-specific result citation is not included until a normalized clinical-trial-result record becomes available. That gap is itself operationally important: teams should monitor first result indexing, conference abstracts, protocol amendments and changes to the primary-completion date.
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Asset and sponsor context
Drug & Asset MCP profile: Mosunetuzumab is indexed as Bispecific T-cell Engager (BiTE), with target CD20 x CD3, mechanism CD20 inhibitors, CD3 stimulants, and global highest development status Approved.
Company & Deal Intelligence MCP profile: University of Utah is resolved to a normalized organization record in SALT LAKE COUNTY, United States. The organization workflow adds identity, location, portfolio and partnering context where available.
The sponsor profile matters because scientific rationale alone does not determine development value. Manufacturing readiness, portfolio fit, geographic reach, partnering capacity and the ability to fund confirmatory development can determine whether a positive signal becomes a competitive asset.
White space around this program
- Sharper patient selection: prospective biomarker or phenotype definitions that identify who is most likely to benefit.
- Clinically interpretable endpoints: outcomes connecting activity with function, symptoms, survival or treatment burden.
- Comparator relevance: evidence against the most decision-relevant contemporary standard of care.
- Broader external validity: evidence across additional geographies, demographic groups and real-world settings.
- Operational differentiation: a development path that closes the readout gap without sacrificing safety or durability.
What to monitor next
Monitor recruitment, enrollment changes, protocol amendments, endpoint hierarchy, primary-completion timing, first result indexing, asset ownership and sponsor partnerships. A change in endpoint, population or ownership can alter the probability of success before a headline data release.
Bottom line
NCT07548450 provides a focused lens on Waldenstrom's macroglobulinaemia refractory development. Its value will be determined by whether Mosunetuzumab can convert the current Phase 2 design into evidence that is clinically meaningful, operationally credible and differentiated from competing programs.
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