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
| Phase | Phase 4 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 120 (estimated) |
| Sponsor | Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Academic / other |
| Locations | 12 sites (Beijing, Beijing Municipality and 11 other locations) |
| Status | Recruiting |
| Started | October 30, 2025 |
| Main results expected | October 2027 |
| Study ends | December 2027 |
| Registry record updated | June 1, 2026 |
| Trial ID | NCT07569653 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
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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
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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
- Study coordinator: wei MD, PhD
- Email: shiwei076@hust.edu.cn
- Phone: +86 027-85726003
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.