Low Dose ATG Plus Low Dose PTCy as GVHD Prophylaxis in Haplo-HSCT (ATG/PTCy)

April 13, 2019 updated by: Xianmin Song, MD, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Low Dose Rabbit Antithymocyte Globulin Plus Low-dose Post-transplantation Cyclophosphamide as GVHD in Hapl-HSCT for Patients With Hematologic Malignancies: a Phase II Trial

Low dose Rabbit Antithymocyte Globulin plus Low-dose post-transplantation cyclophosphamide as graft-versus-host disease prophylaxis in haploidentical hematopoietic stem cell transplantation for patients with hematologic malignancies

Study Overview

Status

Status

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

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.

Detailed Description

A novel regimen, which is composed of a low dose of ATG (5 mg/kg) and low-dose PTCy (one dose of PTCy, 50mg/kg) for GVHD prophylaxis in haplo-HSCT for patients with hematologic malignancies, is going to be evaluated in the prospective, randomized control, phase II clinical trial. It is theoretically feasible because the mechanisms of ATG and Cyclophosphamide on T lymphocyte are different. ATG plays the immunosuppressive activity on the depletion of peripheral T lymphocytes through complement dependent lysis or activation-associated apoptosis. ATG also modulates cell-surface expression of surface adhesion molecules or chemokine receptors. In addition, ATG can also affect or interfere with the function of different immune cells such as B lymphocytes, regulatory T lymphocytes (Treg), natural killer (NK)-T lymphocytes and dendritic cells (DC).Cyclophosphamide is nontoxic to hematopoietic stem cells and can selectively deplete the alloreactive T cells. Therefore, we hypothesis that ATG followed by PTCy have the synergistic effect on GVHD prophylaxis. (2) Luznik et al also showed that there was no difference in the incidence of severe acute GVHD between one or two doses of PTCy. Furthermore, there was a trend toward a lower incidence of extensive cGVHD among patients of two doses of PTCy compared with one dose PTCy. One dose of PTCy might preserve the GVL effect without influencing the incidence of the severe aGVHD. (3) Y Wang et al reported a randomized clinical trial comparing two different doses of ATG (6 and 10mg/kg) as GVHD prophylaxis for Haplo-HSCT. There was no difference in the median myeloid and platelet engraftment time and the rate of graft failure. The results showed that the incidence of grade III-IV acute GVHD was higher in the ATG-6 group than in the ATG-10 group. But the EBV reactivation occurred more frequently in the ATG-10 group than in the ATG-6 group. The higher rate of infection and NRM may influence the transplant outcomes in this GVHD prophylaxis strategy. We speculated that low dose of ATG (5 mg/kg) will ensure the engraftment and decrease infection frequency. But the optimal timing of ATG administration still needed to be considered. The immunosuppressive activity of ATG is not only dose-dependent but also rely on the timing of drug administration, especially when the lower dose of ATG was used as GVHD Prophylaxis. So we designed a randomized control phase II study to evaluate the efficacy and toxicity with low dose ATG followed by low dose PTCy as GVHD prophylaxis .

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 (Anticipated)

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.
100

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.
  • Phase 2

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 Contact Backup

Study Locations

  • China
    • Shanghai
      • Shanghai, Shanghai, China, 200127
        • Recruiting
        • Shanghai First People's Hospital
        • Contact:
        • Contact:

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 to 70 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients diagnosed with hematologic malignancies (AML, ALL, high-risk MDS, lymphoma, CML) were enrolled in this study. Diagnosis was according to the criteria of 2008 World Health Organization (WHO) classification of tumors of hematopoietic and lymphoid tissues.
  • Family members selected as donors were typed at the HLA-A, -B, -DQB1, -C and -DRB1 locus at high-resolution level. Haplo was defined as recipient-donor number of HLA mismatches > 2.(20)
  • 14 to 70 years old.
  • Performance status scores no more than 3 (ECOG criteria).
  • Adequate organ function as defined by the following criteria: alanine transaminase （ALT）, aspartate transaminase（AST） and total serum bilirubin <2×ULN (upper limit of normal). Serum creatinine and blood urea nitrogen (BUN) <1.25×ULN.
  • Adequate cardiac function without acute myocardial infarction, arrhythmia or atrioventricular block, heart failure, active rheumatic heart disease and cardiac dilatation(the patients has been improved after treatment of the disease and are not expected to affect transplant can include in the study).
  • Absence of any other contraindications of stem cell transplantation. Willingness and ability to perform HSCT.
  • Signed and dated informed consent document indicating that the patient (or legally acceptable representative) has been informed of all pertinent aspects of the trial prior to enrollment. Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests, and other study procedures.

Exclusion Criteria:

  • Presence of any condition inappropriate for HSCT.
  • Life expectancy < 3 months because of other severe diseases.
  • Presence of any fatal disease, including respiratory failure, heart failure, liver or kidney function failure.
  • Uncontrolled infection.
  • Pregnancy or breastfeeding.
  • Has enrolled in another clinical trials.
  • Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or study drug administration, or may interfere with the interpretation of study results, and in the judgment of the investigator would make the patient inappropriate for entry into this study.

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: Treatment
  • 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: group A
low dose antithymocyte globulin rATG(2.5mg/kg/d) used at d-3-d-2 low dose post-transplant cyclophosphamide PTCy (50mg/kg/d) use at d+3
Drug: ATG
group A:low dose antithymocyte globulin rATG(2.5mg/kg/d) used at d-3-d-2 low dose post-transplant cyclophosphamide PTCy (50mg/kg/d) use at d+3 group B:low dose antithymocyte globulin rATG(2.5mg/kg/d) used at d-2-d-1 low dose post-transplant cyclophosphamide PTCy (50mg/kg/d) use at d+3
Other Names:
  • PTCY
Experimental: group B
low dose antithymocyte globulin rATG(2.5mg/kg/d) used at d-2-d-1 low dose post-transplant cyclophosphamide PTCy (50mg/kg/d) use at d+3
Drug: ATG
group A:low dose antithymocyte globulin rATG(2.5mg/kg/d) used at d-3-d-2 low dose post-transplant cyclophosphamide PTCy (50mg/kg/d) use at d+3 group B:low dose antithymocyte globulin rATG(2.5mg/kg/d) used at d-2-d-1 low dose post-transplant cyclophosphamide PTCy (50mg/kg/d) use at d+3
Other Names:
  • PTCY

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
The cumulative incidences of acute GVHD
Time Frame: 100 days after transplantation
The cumulative incidences of aGvHD was defined as the number and the ratio of the participants with aGVHD
100 days after transplantation

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
Leukocyte engraftment
Time Frame: 1 MONTH
Leukocyte engraftment:(was defined as the first of three consecutive days of peripheral white blood count >1000/ul.
1 MONTH
Platelet engraftment
Time Frame: 1 MONTH
Platelet engraftment:(was defined as the first of seven consecutive days of platelet counts of >50000/ul.
1 MONTH
Donor chimerism
Time Frame: 2 YEARS
Quantitative chimerism analyzes were performed using short-tandem-repeat-based polymerase chain reaction technique sat regular intervals for every 4 weeks after allografting in bone marrow.
2 YEARS
Relapse incidence (RI)
Time Frame: 2 YEARS
RI was defined as the number and ratio of the participants with relapse after transplantation
2 YEARS
chronic GVHD
Time Frame: 2 year
cGvHD was diagnosed and graded according to the 2014 National Institutes of Health (NIH) consensus criteria: mild, moderate or severe respectively.The number and ratio of participants with cGVHD after transplatation
2 year
infection
Time Frame: 6 month
CMV and EB infections(The number and ration of participants with infection after transplantaton)
6 month

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.
Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Chair: xinpeng wang, doctor, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

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.
May 30, 2017

Primary Completion (Anticipated)

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 20, 2020

Study Completion (Anticipated)

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.
December 20, 2021

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).
December 30, 2017

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.
January 4, 2018

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.
January 10, 2018

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.
April 16, 2019

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.
April 13, 2019

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.
May 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • SHSYXY-ATG/PTCy
  • NSFC (Other Grant/Funding Number: 81273057)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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