← Back to Clinical Trials
Recruiting NCT06639854

NCT06639854 The Use of Cytomegalovirus Cell Mediated Immunity to Optimize the Duration of Letermovir Prophylaxis in Hematopoietic Cell Transplant Recipients

◆ AI Clinical Summary
Plain-language summary for patients
Clinical Trial Summary
NCT ID NCT06639854
Status Recruiting
Phase
Sponsor M.D. Anderson Cancer Center
Condition Cytomegalovirus Cell Mediated Immunity
Study Type INTERVENTIONAL
Enrollment 105 participants
Start Date 2024-11-20
Primary Completion 2027-07-01

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
Hematopoietic Cell TransplantLetermovir

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

This trial targets 105 participants in total. It began in 2024-11-20 with a primary completion date of 2027-07-01.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The goal of this laboratory research study is to learn if interrupting a patient's letermovir dosing based on their immune system response can help HSC transplant patients avoid post-treatment CMV infections better than taking letermovir every day without interruption.

Eligibility Criteria

Inclusion criteria 1. Allogeneic HCT recipients with positive CMV serostatus 2. On letermovir prophylaxis at day 90 post transplant (+/- 7 days) 3. At high risk for CMV reactivation after day +100: 1. Prior or active graft versus host disease requiring systemic steroids 2. Mismatch stem cell donor (includes haploidentical, mismatch unrelated donor (MMUD), match related donor with at least one mismatch at one of the three specified HLA gene loci (HLA-A, HLA-B, or HLA-DR) and cord donor recipients) 3. Received T cell depletion or anti thymoglobulin during conditioning 4. CMV reactivation prior to day 100 post transplant 5. On steroids at any dose within 2 weeks of enrollment Exclusion criteria 1. Patients under the age of 18 2. Patients are discharged from our institution and unwilling to come back for follow up 3. Patients are actively undergoing treatment for CS-CMVi at time of screening. Prior CS-CMVi is not an exclusion from study. 4. Patients are allergic or intolerant to letermovir or have history of letermovir resistant CMV infection. 5. Not able to procure letermovir for extended prophylaxis beyond day +100.

Contact & Investigator

Central Contact

Fareed Khawaja, MBBS

✉ fkhawaja@mdanderson.org

📞 (281) 610-0253

Principal Investigator

Fareed Khawaja, MBBS

PRINCIPAL INVESTIGATOR

M.D. Anderson Cancer Center

Frequently Asked Questions

Who can join the NCT06639854 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Cytomegalovirus Cell Mediated Immunity. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT06639854 currently recruiting?

Yes, NCT06639854 is actively recruiting participants. Contact the research team at fkhawaja@mdanderson.org for enrollment information.

Where is the NCT06639854 trial being conducted?

This trial is being conducted at Houston, United States.

Who is sponsoring the NCT06639854 clinical trial?

NCT06639854 is sponsored by M.D. Anderson Cancer Center. The principal investigator is Fareed Khawaja, MBBS at M.D. Anderson Cancer Center. The trial plans to enroll 105 participants.

Related Trials

ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology