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A Study of Radiation Therapy Before CAR T Cell Therapy for People With B Cell Lymphoma

A Phase I Study Of Split-Course Bridging Radiotherapy (SC-BRT) Prior To Commercial CD19 CAR T-Cell Therapies For Patients With Relapsed or Refractory B-Cell Lymphomas

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05574114
Enrollment
20
Registered
2022-10-10
Start date
2022-10-05
Completion date
2026-10-31
Last updated
2025-11-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-Hodgkin Lymphoma, Non-Hodgkin's Lymphoma, Relapsed, Non-Hodgkin's Lymphoma Refractory

Keywords

Split-Course Bridging Radiotherapy, CD19 CAR T-Cell Therapies, 22-217

Brief summary

The purpose of this study is to test whether radiation therapy given before standard CAR T cell therapy is a safe and effective treatment for people with relapsed and refractory B cell lymphoma. The researchers will also study whether radiation therapy used in this study is a practical treatment option before standard CAR T cell therapy.

Interventions

RADIATIONBridging radiotherapy (BRT)

RT Part I. The target will be to complete the 9th fraction of radiotherapy (i.e., total of 27Gy) between days -12 and -8 Day -2: BRT Part II (intervention is one fraction 3 Gy to receive a total dose of 3 Gy).

Day -5 to -3: Patients will receive standard of care lymphodepleting chemotherapy

BIOLOGICALCAR T-cell product

Day 0: Subject will receive standard of care infusion of a manufactured commercial CAR T-cell product.

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This is a single arm, Phase I trial designed to describe the feasibility and safety of a standardized, stage-adapted, split-course BRT regimen prior to standard of care, commercial anti-CD19 CAR T-cell therapy. This design incorporates a small early safety cohort with the option for a potential patient expansion cohort.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically confirmed, relapsed or refractory non-Hodgkin lymphoma patients eligible for a CAR T-cell therapy, such as DLBCL (including transformed follicular lymphoma), high grade B-cell lymphoma, primary mediastinal B-cell lymphoma, and follicular lymphoma of any grade * Patient is approved for, and planned to receive, anyone of the three commercially available anti-CD19 CAR T-cell products (axicabtagene ciloleucel, maraleucel or tisagenlecleucel) * Patient has at least one site of disease with avidity greater than liver on a screening FDG-PET scan performed within 2 months of RT simulation. Measurable disease is not required. * Active secondary central nervous system (CNS) lymphoma is allowed * Age 18 or older * ECOG status ≤2 * Female subjects of childbearing potential should be willing to use 2 methods of birth control or be surgically sterile or abstain from sexual activity for the course of the study through 120 days after the last dose of radiotherapy. Subjects of childbearing potential are those who have not been surgically sterilized or have not been free from menses for \> 1 year. Note: Abstinence is acceptable if this is the established and preferred contraception for the subject * Male subjects should agree to use an adequate method of contraception starting with the first dose of study therapy through 120 days after the last dose of study therapy. Note: Abstinence is acceptable if this is the established and preferred contraception for the subject

Exclusion criteria

* Subject is planned to receive any systemic therapy after initiation of BRT and before re-infusion of CAR T cells including conventional chemotherapy, immunotherapy or targeted agents \[Note: Planned lymphodepletion chemotherapy in preparation for CAR T cell administration is not an exclusion criterion\] * Subject has received prior RT to any site(s) planned for bridging therapy such that the composite dose considering the protocol-mandated BRT would exceed normal tissue tolerances in the determination of the investigator. * The treating investigator deems that it would be impossible to comprehensively treat the patient with radiotherapy given concerns about feasibility or potential toxicities * Current or planned pregnancy * Known additional malignancy that is progressing or requires any treatment other than active surveillance or hormonal therapy. Exceptions include basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy. * Subject has any significant medical condition, laboratory abnormality, or psychiatric illness that would prevent the subject from participating in the study based on the investigator´s judgment

Design outcomes

Primary

MeasureTime frameDescription
number of patients who develop unanticipated severe toxicity events1 yearReporting of toxicities will be based on Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 except for CRS and ICANS which will be evaluated using ASTCT Consensus grading.

Secondary

MeasureTime frameDescription
number of patients who are able to receive comprehensive BRT prior to infusion of CAR T cells2 yearsComprehensive is defined as delivery of high- or low-dose RT to all sites of PET-avid disease.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 9, 2026