Defining ctDNA Metrics in Posttransplant Lymphoproliferative Disorder (PTLD)

This study is looking at new ways to treat Posttransplant Lymphoproliferative Disorder (PTLD), a type of lymphoma that can happen after an organ transplant. Researchers want to see if giving a combination of medicines called R-EPOCH (Rituximab, Etoposide, Prednisone, Vincristine, and Cyclophosphamide) helps people with high-risk PTLD. For those with lower-risk PTLD, they will receive Rituximab alone. The study also aims to understand how a new blood test, called circulating tumor DNA (ctDNA), can help doctors make better treatment decisions for PTLD, similar to how it's used in other lymphomas. To join, you must be at least 15 years old, have CD20+ PTLD, and measurable disease. The study hopes to see at least 60% of participants achieve a complete response to treatment.

Study design: This is an open-label study, meaning you and your doctors will know what treatments you are receiving. It plans to enroll 30 participants.
What's involved: You will need to have a PET-CT scan (or CT scan) within 28 days before starting the study. Etoposide and Vincristine will be given by IV.
Compensation: Not stated in the trial record.
Follow-up: The study will measure how many participants have a complete response for up to 3 years.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

Defining ctDNA Metrics in Posttransplant Lymphoproliferative Disorder (PTLD)

Recruiting

PHASE2Ages 15+InterventionalTreatment

Jennifer Amengual

~30 participants

Updated 2026-05-27 on ClinicalTrials.gov

What's tested:RituximabEtoposidePrednisoneVincristineCyclophosphamideDoxorubicin

At a glance

Recruiting sites

1 of 2 listed sites are recruiting right now

RecruitingSuspended, closed, or not yet open

What they're measuring

Number of participants with Complete Response (CR) rate of 60% or higher

Measured over Up to 3 years

Conditions

Lymphoma

Lymphoma, B-Cell

Where it's being run

2 sites across 2 states

California1

New York1

Study leadership

Jennifer Amengual, MD · PRINCIPAL_INVESTIGATOR · Columbia University

Who to contact

Research Nurse Navigator

[email protected]

212-342-5162

Email the study team

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Do you actually qualify for this trial?

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Eligibility criteria

Inclusion

Histologically confirmed CD20+ PTLD including the below subtypes:

Polymorphic

Monomorphic

Age ≥ 15.

Participants must have measurable disease, defined as lymph node ≥ 1.5 cm in greatest diameter per Lugano Classification

Patients must have a PET-CT scan (preferred; alternatively CT chest, abdomen and pelvis with IV contrast) performed within 28 days prior to the start of the study.

All participants must be screened for chronic hepatitis B virus (HBV) within 28 days prior to registration. Participants with known HBV infection (positive serology) must also have a HBV viral load performed within 28 days prior to registration, and participants must have an undetectable HBV viral load on suppressive therapy within 28 days prior to start of treatment. Participants found to be HBV carriers during screening are eligible and must receive standard of care prophylaxis. Participants with active Hepatitis B (HBV viral load \> 500 IU/mL) within 28 days prior to registration are not eligible.

Participants with a history of hepatitis C virus (HCV) infection must have been treated and cured. Participants with an active HCV infection who are currently on treatment must have an undetectable HCV viral load within 28 days prior to registration.

Participants with known human immunodeficiency virus (HIV)-infection are eligible providing they are on effective anti-retroviral therapy and have undetectable viral load at their most recent viral load test (must be within 26 weeks prior to registration). Participants with known HIV must have a CD4 count checked within 28 days prior to registration, but may proceed with therapy regardless of CD4 count.

Organ function as assessed by laboratory testing is in appropriate range for receipt of rituximab and R-EPOCH per individual treating physician discretion.

Cardiac function testing is in appropriate range for receipt of rituximab and R-EPOCH per individual treating physician discretion.

Eastern Cooperate Oncology Group (ECOG) performance status is in appropriate range for receipt of rituximab and R-EPOCH per individual treating physician discretion.

Ability to understand and the willingness to sign a written informed consent document. In cases of partial impairment, impairment that fluctuates over time, or complete impairment due to dementia, stroke, traumatic brain injury, developmental disorders (including mentally disabled persons), serious mental illness, and delirium, a subject may be enrolled if the subject's legally authorized representative consents on the subject's behalf.

Due to the potential teratogenic effects of chemotherapy, women of childbearing age must have a documented negative serum β-hCG measured within 2 weeks of starting treatment.

Both women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence).

Women must agree to not breastfeed during the entirety of the study period.

Participants must not have had chemotherapy for other indications within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study and must have recovered from adverse events due to agents administered more than 4 weeks earlier.

Participants must not have received more than a cumulative of dose 250 mg/m 2 of prior doxorubicin (or equivalent dose of another anthracycline, such as epirubicin) therapy (at any time prior to registration).

Intrathecal chemotherapy administered for CNS prophylaxis is allowed in addition to protocol therapy per institution practice.

Exclusion

Patients who have received systemic chemotherapy for PTLD.

Patients who have known lymphomatous involvement of the central nervous system (CNS).

What this trial measures

Number of participants with Complete Response (CR) rate of 60% or higherUp to 3 years
to determine the rate of early molecular response to induction rituximab as well as correlate the experience of undetectable measurable residual disease at mid-consolidation and end of treatment

Trialytics