CMV-CMI in csCMVi After HSCT
3. juli 2026 opdateret af: The First Affiliated Hospital of Soochow University
Study of CMV Specific Immune Reconstitution in Patients With Clinical Significant CMV Infection After Allogeneic Hematopoietic Stem Cell Transplantation (Allo-HSCT)
Cytomegalovirus (CMV) reactivation is a common and serious complication after allogeneic hematopoietic stem cell transplantation (allo-HSCT), and the reconstitution of CMV-specific cell-mediated immunity (CMV-CMI) plays a key role in viral control.
This prospective, exploratory study will enroll 40 adult CMV-seropositive patients who experience their first CMV reactivation after allo-HSCT. CMV-specific T cell levels (IFN-γ-producing T cells stimulated by IE-1 and pp65 antigens) will be measured using ELISPOT at four time points: at diagnosis of CMV viremia, 3 weeks after initiating preemptive therapy, at anti-CMV drug withdrawal, and 4 weeks after treatment discontinuation. Patients will be followed for 12 weeks after stopping treatment.
The primary objective is to describe the changes in CMV-specific T cell levels over the therapy. Secondary objectives are to explore the relationship between these levels and the occurrence of refractory CMV infection, recurrent CMV infection, and CMV disease. Findings may help identify patients at high risk of progressing to severe or persistent CMV infection at an early stage of preemptive therapy, enabling personalized intervention strategies.
Studieoversigt
Status
Rekruttering
Betingelser
Intervention / Behandling
Undersøgelsestype
Observationel
Tilmelding (Anslået)
40
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiekontakt
- Navn: Feng Chen, MD
- Telefonnummer: +8613584861215
- E-mail: 13584861215@163.com
Studiesteder
-
-
Jiangsu
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Suzhou, Jiangsu, Kina
- Rekruttering
- The First Affiliated Hospital of Soochow University
-
Kontakt:
- The First Affiliated Hospital of Soochow University
- Telefonnummer: +86 512 67972861
- E-mail: sdfyec@163.com
-
-
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Ingen
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
The study population consists of CMV-seropositive adults (≥18 years of age) who have undergone allogeneic hematopoietic stem cell transplantation (allo-HSCT) and experience their first CMV reactivation after transplantation.
Beskrivelse
Inclusion Criteria:
- ≥18 years old and underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT);
- First CMV reactivation after transplantation;
- Life expectancy of ≥8 weeks;
- The participant (or legally acceptable representative, if applicable) has provided written informed consent for the trial.
Exclusion Criteria:
- Recurrence of CMV infection;
- primary CMV infection in CMV-seronegative recipients (R-);
- Resistance to known anti-CMV drugs (ganciclovir, valganciclovir, foscarnet, maribavir, etc.);
- Currently receiving CMV-CTL treatment or lymphocyte infusion.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
Intervention / Behandling |
|---|---|
|
CMV Reactivation Cohort
Adult CMV-seropositive patients (≥18 years) who experience first CMV reactivation after allogeneic hematopoietic stem cell transplantation (allo-HSCT).
Therapy with anti-CMV drugs (mono- or combination therapy, at investigator's discretion) is initiated upon diagnosis of CMV viremia and continued until two consecutive negative CMV DNA tests separated by ≥5 days.
CMV-specific T cell levels are measured by ELISPOT at four time points: at CMV viremia diagnosis, 3 weeks after starting preemptive therapy, at anti-CMV drug withdrawal, and 4 weeks after treatment discontinuation.
Patients are followed for 12 weeks after treatment cessation.
|
The choice of agent (monotherapy or combination) is at the investigator's discretion and may include ganciclovir, valganciclovir, foscarnet, maribavir, or other approved anti-CMV medications.
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
CMV-specific T cells
Tidsramme: from baseline to 4 weeks after end of treatment, an average of 8 weeks
|
Number of IFN-γ-producing T cells per 250,000 PBMCs measured by ELISPOT
|
from baseline to 4 weeks after end of treatment, an average of 8 weeks
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Cumulative incidence of refractory CMV infection
Tidsramme: From Day 1 (first anti-CMV dose) through EOT (inclusive), an average of 4 weeks
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From Day 1 (first anti-CMV dose) through EOT (inclusive), an average of 4 weeks
|
|
Cumulative incidence of CMV disease
Tidsramme: From EOT+1 day through 12 weeks after EOT(end of follow-up)
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From EOT+1 day through 12 weeks after EOT(end of follow-up)
|
|
Cumulative incidence of recurrent CMV infection
Tidsramme: From EOT+1 day through 12 weeks after EOT (end of follow-up)
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From EOT+1 day through 12 weeks after EOT (end of follow-up)
|
|
Cumulative incidence of acute graft-versus-host disease (aGVHD)
Tidsramme: From Day 1 through 12 weeks after EOT (end of follow-up)
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From Day 1 through 12 weeks after EOT (end of follow-up)
|
|
Overall survival
Tidsramme: From Day 1 through 12 weeks after EOT (end of follow-up).
|
From Day 1 through 12 weeks after EOT (end of follow-up).
|
Andre resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Cumulative incidence of non-relapse mortality (NRM)
Tidsramme: From Day 1 through 12 weeks after EOT (end of follow-up).
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From Day 1 through 12 weeks after EOT (end of follow-up).
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
1. juni 2026
Primær færdiggørelse (Anslået)
31. maj 2028
Studieafslutning (Anslået)
31. august 2028
Datoer for studieregistrering
Først indsendt
3. juni 2026
Først indsendt, der opfyldte QC-kriterier
3. juli 2026
Først opslået (Faktiske)
7. juli 2026
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
7. juli 2026
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
3. juli 2026
Sidst verificeret
1. juni 2026
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- CMV-CMI in csCMVi
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
JA
IPD-planbeskrivelse
De-identified individual participant data (IPD) for the primary and secondary outcome measures will be made available upon reasonable request to the principal investigator.
Data will be shared after publication of the primary study results, for research purposes only, under a data transfer agreement that ensures compliance with ethical and confidentiality requirements.
Supporting documents (study protocol, statistical analysis plan, and informed consent form) will be available as supplementary files.
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