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Single Arm Pilot Trial of Letermovir for CMV Prophy in CAR T Cell

Open Label Single Arm Pilot Trial of Letermovir for Cytomegalovirus Prophylaxis After Axicabtagene Ciloleucel Therapy

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06575374
Enrollment
36
Registered
2024-08-28
Start date
2024-12-12
Completion date
2028-08-01
Last updated
2026-08-07

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

Conditions

Cell Therapy

Brief summary

The goal of this clinical research study is to learn if a drug called Letermovir can help to prevent CMV reactivation.

Detailed description

Primary Objective: Estimate the probabilities at days d = +28 and +98 following CAR T cell infusion, among patients alive at the day of evaluation, of CMV reactivation in CMV seropositive patients receiving letermovir for CMV prophylaxis after standard of care (SOC) axicabtagene ciloleucel (AXI-CEL) therapy, using the cutoff CMV DNA qPCR \> c for c = 400 and 1000 IU/mL to define CMV reactivation, for a total of four (d, c) combinations. Secondary Objectives: Estimate overall survival probabilities at days+28, +98, and +364 following CAR T cell infusion of CMV seropositive patients receiving letermovir for CMV prophylaxis after SOC AXI-CEL therapy. Describe the tolerability of letermovir during the period of CMV prophylaxis after SOC AXI-CEL therapy in CMV seropositive patients at high risk for CMV reactivation.

Interventions

DRUGLetermovir

Given by mouth or intravenously

Sponsors

M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

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

Inclusion criteria

1. Age ≥ 18 years of age. 2. Have an ECOG performance status of 0 or 1. 3. The participant must be scheduled for SOC AXI-CEL. 4. The participant must be seropositive for CMV (defined as having anti-CMV IgG antibodies) 5. Creatinine clearance \> 10 mL/min 6. Child Pugh class A or B if liver disease is present. 7. Participants of child-bearing potential must agree to use adequate contraceptive methods (e.g., hormonal or barrier method of birth control; abstinence) prior to study entry. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform the treating physician immediately. 8. Participant must understand the investigational nature of this study and sign an Institutional Review Board approved written informed consent form prior to receiving any study related procedure.

Exclusion criteria

1. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection not responding to treatment, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. 2. Female participants who are pregnant or breastfeeding. 3. Unwilling or unable to follow protocol requirements. 4. Planned to receive any other anti-CMV therapy such as high dose acyclovir (500 mg/m2/dose intravenously every 8 hours or 800 mg orally 4 times a day) or high dose valacyclovir (2 grams three to four times daily or 2 grams three times daily) for the prophylaxis of CMV reactivation. Acyclovir or valacyclovir at lower doses for the prevention of HSV and VZV are allowed. 5. Any condition which in the Investigator's opinion deems the participant an unsuitable candidate to receive study drug. 6. Evidence for CMV infection defined as any positive CMV DNA qPCR test within 1 week prior to starting letermovir. 7. Child Pugh class C liver disease.

Design outcomes

Primary

MeasureTime frameDescription
Safety and Adverse Events (AEs)Through study completion; an average of 1 yearIncidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0

Countries

United States

Contacts

CONTACTGeorge Chen, MD
glchen1@mdanderson.org(713) 792-3630
PRINCIPAL_INVESTIGATORGeorge Chen, MD

M.D. Anderson Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 8, 2026