Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 and up

T-cell–guided letermovir stopping after allogeneic stem cell transplant

Official title: A Multicenter, Randomized, Controlled, Open-label Clinical Study to Evaluate the Efficacy and Safety of Letermovir Prophylaxis Duration Guided by Dynamic Monitoring of Specific T-cells for Preventing Cytomegalovirus Infection in Adult Recipients of Allogeneic Hematopoietic Stem Cell Transplantation in China.

Run by Union Hospital, Tongji Medical College, Huazhong University of Science and Technology · NCT07569653 · Data updated 2026-11-12

This tests whether using a CMV-specific T-cell blood test to decide when adult CMV-positive patients can stop letermovir after allogeneic stem cell transplant keeps them protected while avoiding unnecessary drug exposure.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment120 (estimated)
SponsorUnion Hospital, Tongji Medical College, Huazhong University of Science and Technology
Academic / other
Locations12 sites (Beijing, Beijing Municipality and 11 other locations)
StatusRecruiting
StartedOctober 30, 2025
Main results expectedOctober 2027
Study endsDecember 2027
Registry record updatedJune 1, 2026
Trial IDNCT07569653 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) who received an allogeneic HSCT, are CMV-seropositive (R+), expect to survive >6 months, and can consent and attend follow-up visits are eligible.

Probably not a fit

Patients with active CMV infection/disease at screening, known letermovir allergy, severe liver or kidney failure, pregnancy or breastfeeding, or those unable to mount CMV-specific T-cell responses are unlikely to benefit from the guided discontinuation approach.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized Phase 4 trial compares a personalized approach using QuantiFERON-CMV T-cell monitoring to guide letermovir discontinuation versus standard-duration letermovir prophylaxis after allogeneic hematopoietic stem cell transplant. Participants who are CMV-seropositive (R+) are randomly assigned to have letermovir stopped when CMV-specific T-cell recovery is documented or to receive routine prophylaxis for the standard period. The study will track CMV infection/disease rates and safety outcomes to determine whether the T-cell–guided strategy maintains protection while shortening prophylaxis for some patients. The intervention is implemented at a single center in Wuhan with regular blood testing and clinical follow-up.

Why it matters

Potential benefit: If successful, this approach could let some patients stop letermovir earlier, reducing drug exposure, side effects, and cost while keeping CMV risk controlled.

How similar studies have gone: Observational studies and smaller trials have shown that CMV-specific T-cell assays can predict protection and inform prophylaxis decisions, but large randomized evidence for letermovir duration guided by T-cell monitoring remains limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT).
2. CMV serostatus of the recipient is positive (R+).
3. Aged 18 years or older.
4. Expected survival \> 6 months.
5. Provision of signed informed consent.

Exclusion Criteria:

* 1.Active CMV infection or CMV disease at the time of screening.

  2.Known hypersensitivity to Letermovir or its excipients.

  3.Severe hepatic or renal impairment.

  4.Pregnant or breastfeeding women.

Where it's running

  • Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
    Wuhan, Hubei, China
    Recruiting
  • Chinese PLA General Hospital
    Beijing, Beijing Municipality, China
    Not yet recruiting
  • The Second Hospital of Hebei Medical University
    Shijiazhuang, Hebei, China
    Not yet recruiting
  • Henan Cancer Hospital
    Zhengzhou, Henan, China
    Not yet recruiting
  • The First Affiliated Hospital of Zhengzhou University
    Zhengzhou, Henan, China
    Not yet recruiting
  • Jingzhou First People's Hospital
    Jingzhou, Hubei, China
    Not yet recruiting
Show 6 more locations
  • Jingzhou Central Hospital
    Jingzhou, Hubei, China
    Not yet recruiting
  • Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology
    Wuhan, Hubei, China
    Not yet recruiting
  • Zhongnan Hospital of Wuhan University
    Wuhan, Hubei, China
    Not yet recruiting
  • The Affiliated Hospital of Inner Mongolia Medical University
    Hohhot, Inner Mongolia, China
    Not yet recruiting
  • The First Affiliated Hospital of Nanchang University
    Nanchang, Jiangxi, China
    Not yet recruiting
  • The First Affiliated Hospital of Wenzhou Medical University
    Wenzhou, Zhejiang, China
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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  • CMV-specific T cells after CMV reactivation in adults after HSCT

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.