Immune Reconstitution and Clinical Prognosis Following Umbilical Cord Blood Transplantation

November 11, 2026 updated by: Institute of Hematology & Blood Diseases Hospital, China

A Prospective Study on Immune Reconstitution and Clinical Prognosis in Patients After Umbilical Cord Blood Transplantation

In this prospective randomized controlled trial of umbilical cord blood hematopoietic stem cell transplant recipients, post-transplant immune data will be collected from two groups. A composite immune risk score will be used to assess immune reconstitution for risk stratification and analyze its associations with clinical prognostic endpoints.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
200

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
      • Tianjin, China
        • Recruiting
        • Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College
        • Contact:
          • Yahui Feng

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Age ≥ 14 years old
  2. Umbilical cord blood transplant
  3. Patients must provide written informed consent before the start of the study procedures.

Exclusion Criteria:

  1. Patients who are ineligible for the study due to other factors, or who will bear great risk if they participate in the study.
  2. Death or loss to follow-up of the patient prior to immune reconstitution stratification

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Composite Immune Risk Score Stratification Notification Group

Attending physicians will receive immune reconstitution risk stratification results of patients calculated by the composite immune risk score model to guide patient health monitoring.
Behavioral: Composite Immune Risk Score Stratification Notification Group

Attending physicians will receive immune reconstitution risk stratification results of patients calculated by the composite immune risk score model to guide patient health monitoring.
No Intervention: Standard Care Control Group

No risk stratification results of patients from the composite immune risk score model will be provided to attending physicians. Patients receive standard routine care.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Frequency of infection-related laboratory testing (blood culture, pathogen PCR, NGS)
Time Frame: 6 months post-transplant

Defined as the count of infection-related laboratory tests (blood culture, pathogen PCR, pathogen NGS) for each patient within 6 months after umbilical cord blood transplantation. Test counts are extracted from electronic medical records.
6 months post-transplant
Number of medication adjustments intended to accelerate immune reconstitution or enhance infection prophylaxis
Time Frame: 6 months post-transplant
6 months post-transplant
Number of return visits
Time Frame: 6 months post-transplant
6 months post-transplant

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Frequency of infection-related laboratory testing (blood culture, pathogen PCR, NGS)
Time Frame: 1 year post-transplant

Defined as the count of infection-related laboratory tests (blood culture, pathogen PCR, pathogen NGS) for each patient within 1 year after umbilical cord blood transplantation. Test counts are extracted from electronic medical records.
1 year post-transplant
Number of medication adjustments intended to accelerate immune reconstitution or enhance infection prophylaxis
Time Frame: 1 year post-transplant
1 year post-transplant
Number of return visits
Time Frame: 1 year post-transplant
1 year post-transplant
Immune reconstitution status (quantity of T, B, NK cells and other immune subsets, and T cell clonal diversity)
Time Frame: at 4, 6, 9 and 12 months post-transplant

Defined as the quantity of T cells, B cells, NK cells and other immune subsets measured by flow cytometry, and T cell clonal diversity assessed by TCR repertoire sequencing at scheduled time points. Data are extracted from electronic medical records.
at 4, 6, 9 and 12 months post-transplant
Infection rate
Time Frame: at 6, 9 and 12 months post-transplant
at 6, 9 and 12 months post-transplant
Incidence of chronic GVHD
Time Frame: at 6, 9 and 12 months post-transplant
at 6, 9 and 12 months post-transplant
Relapse rate
Time Frame: at 6, 9 and 12 months post-transplant
at 6, 9 and 12 months post-transplant
Survival
Time Frame: at 6, 9 and 12 months post-transplant
at 6, 9 and 12 months post-transplant
Hospitalization rate
Time Frame: at 6, 9 and 12 months post-transplant
at 6, 9 and 12 months post-transplant
Outpatient rate
Time Frame: at 6, 9 and 12 months post-transplant
at 6, 9 and 12 months post-transplant

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Institute of Hematology & Blood Diseases Hospital, China

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 16, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 11, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 13, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 11, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SKIRT-CB-RCT-001

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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