🏛️ Verified NIH Record • Updated 2026-08-03

A Study Evaluating Efficacy and Safety of Mosunetuzumab in Combination With Polatuzumab Vedotin Compared to Rituximab in Combination With Gemcitabine Plus Oxaliplatin in Participants With Relapsed or Refractory Aggressive B-Cell Non-Hodgkin's Lymphoma (NCT05171647)

A Randomized, Open-Label, Multicenter Phase III Study Evaluating Efficacy and Safety of Mosunetuzumab in Combination With Polatuzumab Vedotin in Comparison With Rituximab in Combination With Gemcitabine Plus Oxaliplatin in Participants With Relapsed or Refractory Aggressive B-Cell Non-Hodgkin's Lymphoma

🔵 Active, Not Recruiting Phase3 💊 Investigational Drug / Biologic Sponsor: Hoffmann-La Roche

🩺 Plain-English Summary (8th-Grade Level)

This study will assess the efficacy and safety of mosunetuzumab in combination with polatuzumab vedotin (M+P) in participants with relapsed or refractory (R/R) diffuse-large B-cell lymphoma (DLBCL), high-grade B-cell lymphoma, transformed follicular lymphoma (trFL) and FL Grade 3B (FL3B) in comparison with a commonly used regimen in this participant population, rituximab, gemcitabine and oxaliplatin (R-GemOx).

Who can join: Review the eligibility criteria below.

Location: City of Hope Cancer Center — Duarte, California

Age range: 18 Years

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria ↗

📍 All Participating Trial Locations (51 Sites)

Showing the first 25 of 51 sites.

  • City of Hope Cancer Center — Duarte, California
  • St. Luke's Hospital — Chesterfield, Missouri
  • Ascension Seton Infusion Center — Austin, Texas
  • MD Anderson Cancer Center — Houston, Texas
  • Hospital Aleman — Buenos Aires,
  • Instituto Alexander Fleming — Buenos Aires,
  • FUNDALEU — Buenos Aires,
  • Hospital Italiano de Buenos Aires — Ciudad Autonoma Buenos Aires,
  • Hospital Erasto Gaertner — Curitiba, Paraná
  • Hospital das Clinicas - UFRGS — Porto Alegre, Rio Grande do Sul
  • Hospital das Clínicas FMRP-USP — Ribeirão Preto, São Paulo
  • Hospital Sao Jose — São Paulo, São Paulo
  • D'or Instituto de Pesquisa e Educação — São Paulo,
  • Hamilton Health Sciences - Juravinski Cancer Centre — Hamilton, Ontario
  • Princess Margaret Hospital — Toronto, Ontario
  • Chum Hopital Notre Dame — Montreal, Quebec
  • Sichuan Cancer Hospital — Chengdu,
  • Fujian Medical University Union Hospital — Fuzhou,
  • Cancer Center, Sun Yat-sen University of Medical Sciences — Guangzhou,
  • Tianjin Cancer Hospital — Tianjin,
  • Tongji Hosp, Tongji Med. Col, Huazhong Univ. of Sci. & Tech — Wuhan,
  • Henan Cancer Hospital — Zhengzhou,
  • Soroka Medical Center — Beersheba,
  • Ichilov Sourasky Medical Center — Tel Aviv,
  • Kyushu University Hospital — Fukuoka,

📞 Contact the Study Coordinator

Phone: (800) 826-4673

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

💰 Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
🏛️ View Official NIH Record ↗