For Healthcare Professionals

An Open-Label, Multicenter Study Evaluating the Safety, Efficacy, and Pharmacokinetics of Mosunetuzumab in Combination With Tiragolumab With or Without Atezolizumab in Participants With B-Cell Non-Hodgkin Lymphoma


About the study

This study will evaluate the safety, efficacy, and pharmacokinetics of mosunetuzumab in combination with tiragolumab, with or without atezolizumab, in participants with relapsed or refractory (R/R) diffuse large B-cell lymphoma (DLBCL) or follicular lymphoma (FL) who have received at least two previous lines of systemic therapy.

Who can take part

You may be eligible to participate in the study if you meet the following criteria:


Inclusion Criteria:

  1. Aged >/= 18 years
  2. Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
  3. Life expectancy of at least 12 weeks
  4. Histologically documented FL or DLBCL that has relapsed or failed to respond to at least two prior systemic treatment regimens and for which no suitable therapy of curative intent or higher priority exists (e.g., standard chemotherapy, ASCT, CAR T cells)
  5. At least one bi-dimensionally measurable (> 1.5 cm) nodal lesion, or at least one bi-dimensionally measurable (> 1.0 cm) extranodal lesion
  6. Participants with FL (including trFL) for whom a bone marrow biopsy and aspirate can be collected
  7. Adequate hematologic and organ function


Exclusion Criteria:

  1. Received any of the following treatments prior to study entry: mosunetuzumab or other CD20/CD3-directed bispecific antibodies; tiragolumab or other anti-TIGIT agent; allogenic SCT; solid organ transplantation
  2. Currently eligible for autologous SCT
  3. Current or past history of CNS lymphoma or leptomeningeal infiltration
  4. History of severe allergic or anaphylactic reactions to humanized or murine monoclonal antibody therapy (or recombinant antibody-related fusion proteins)
  5. Contraindication to atezolizumab (if applicable) or tocilizumab
  6. Clinically significant toxicities from prior treatment have not resolved to Grade
  7. Treatment-emergent immune-mediated adverse events associated with prior immunotherapeutic agents as defined by the protocol
  8. Evidence of any significant, concomitant disease as defined by the protocol
  9. Major surgery within 4 weeks prior to first study treatment administration, with the exception of protocol-mandated procedures (e.g., tumor biopsies and bone marrow biopsies)
  10. Significant cardiac, pulmonary, CNS, or liver disease, or known active infections
  11. History of other malignancy that could affect compliance with the protocol or interpretation of results
  12. History of autoimmune disease with exceptions as defined in the protocol

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Study Locations

Enter your ZIP code/Postal code/PIN code to locate study sites near you:

How to Apply

Contact the study center to learn if this study is a good match for you.

Study’s details


Non-Hodgkin Lymphoma, Follicular Lymphoma

Age (in years)



Phase 1/Phase 2

Participants needed


Est. Completion Date

Dec 15, 2023

Treatment type



Hoffmann-La Roche identifier


Study number


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