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CMV-CMI in csCMVi After HSCT
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.
Studie Overzicht
Toestand
Interventie / Behandeling
Studietype
Inschrijving (Geschat)
Contacten en locaties
Studiecontact
- Naam: Feng Chen, MD
- Telefoonnummer: +8613584861215
- E-mail: 13584861215@163.com
Studie Locaties
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Jiangsu
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Suzhou, Jiangsu, China
- Werving
- The First Affiliated Hospital of Soochow University
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Contact:
- The First Affiliated Hospital of Soochow University
- Telefoonnummer: +86 512 67972861
- E-mail: sdfyec@163.com
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Bemonsteringsmethode
Studie Bevolking
Beschrijving
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.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
|---|---|
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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.
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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.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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CMV-specific T cells
Tijdsspanne: from baseline to 4 weeks after end of treatment, an average of 8 weeks
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Number of IFN-γ-producing T cells per 250,000 PBMCs measured by ELISPOT
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from baseline to 4 weeks after end of treatment, an average of 8 weeks
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Secundaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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Cumulative incidence of refractory CMV infection
Tijdsspanne: 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
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Cumulative incidence of CMV disease
Tijdsspanne: 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)
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Cumulative incidence of recurrent CMV infection
Tijdsspanne: 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)
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Cumulative incidence of acute graft-versus-host disease (aGVHD)
Tijdsspanne: 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)
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Overall survival
Tijdsspanne: 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).
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Andere uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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Cumulative incidence of non-relapse mortality (NRM)
Tijdsspanne: 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).
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Medewerkers en onderzoekers
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- CMV-CMI in csCMVi
Plan Individuele Deelnemersgegevens (IPD)
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Beschrijving IPD-plan
Informatie over medicijnen en apparaten, studiedocumenten
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