Loncastuximab Tesirine and Mosunetuzumab for the Treatment of Relapsed or Refractory Diffuse Large B-Cell Lymphoma

NCT05672251 · Status: RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 36

Last updated 2026-05-11

No results posted yet for this study

Summary

This phase II trial studies the safety and how well of loncastuximab tesirine when given together with mosunetuzumab works in treating patients with diffuse large B-cell lymphoma that has come back (relapsed) or does not respond to treatment (refractory). Loncastuximab tesirine is a monoclonal antibody, loncastuximab, linked to a toxic agent called tesirine. Loncastuximab attaches to anti-CD19 cancer cells in a targeted way and delivers tesirine to kill them. Mosunetuzumab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. Giving loncastuximab tesirine with mosunetuzumab may help treat patients with relapsed or refractory diffuse large B-cell lymphoma.

Conditions

  • Recurrent Diffuse Large B-Cell Lymphoma
  • Recurrent Grade 3b Follicular Lymphoma
  • Recurrent High Grade B-Cell Lymphoma
  • Recurrent Primary Mediastinal (Thymic) Large B-Cell Lymphoma
  • Recurrent Transformed Chronic Lymphocytic Leukemia
  • Recurrent Transformed Indolent B-Cell Non-Hodgkin Lymphoma to Diffuse Large B-Cell Lymphoma
  • Refractory Diffuse Large B-Cell Lymphoma
  • Refractory Grade 3b Follicular Lymphoma
  • Refractory High Grade B-Cell Lymphoma
  • Refractory Primary Mediastinal (Thymic) Large B-Cell Lymphoma
  • Refractory Transformed Chronic Lymphocytic Leukemia
  • Refractory Transformed Indolent B-Cell Non-Hodgkin Lymphoma to Diffuse Large B-Cell Lymphoma

Interventions

PROCEDURE

Biopsy

Undergo biopsy

PROCEDURE

Biospecimen Collection

Undergo collection of blood samples

PROCEDURE

Computed Tomography

Undergo PET/CT

BIOLOGICAL

Loncastuximab Tesirine

Given IV

BIOLOGICAL

Mosunetuzumab

Given IV

PROCEDURE

Positron Emission Tomography

Undergo PET/CT

Sponsors & Collaborators

  • National Cancer Institute (NCI)

    collaborator NIH
  • City of Hope Medical Center

    lead OTHER

Principal Investigators

  • Swetha Kambhampati · City of Hope Medical Center

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-01-02
Primary Completion
2027-03-23
Completion
2027-03-23
FDA Drug
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05672251 on ClinicalTrials.gov