Anti-thymocyte Globulins for Graft-versus-host Disease Prophylaxis

Study Overview
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Brief Summary
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Age is a risk factor for graft-versus-host disease (GVHD) after human leukocyte antigen (HLA)-matched sibling allogeneic stem cell transplantation (allo-SCT). The incidence of acute GVHD is significantly higher in patients at 40 years of age or more than those at 18 to 39 years of age after allo-SCT. It was found that Anti-thymocyte globulins can be used for prophylaxis of both acute and chronic GVHD after allo-SCT.Prophylaxis of GVHD using ATG in patients at 40 years of age or more in matched sibling allo-SCT settings might significantly decrease the incidence of acute and chronic GVHD and the incidence of late effect after transplantation.

Detailed Description
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Prophylaxis for GVHD included CSA, MTX and MMF±ATG. In the trial group, CSA was started intravenously on day -1, at the dosage of 3 mg/kg, and switched to oral formulation as soon as the patient was able to take medication after engraftment. The dosage was adjusted to maintain a trough blood level of 200-300ng/ml. MMF was administered orally, 0.25g every 12 hours, from day -1 before transplantation to day 30 after transplantation. The dosage of MTX was 15 mg/m2, administered i.v. on day 1, and 10 mg/m2 on days 3, 6, and 11 after transplantation. ATG (Thymoglobulin 2.5mg/kg per day i.v.) on days -2 through -1. In the control group, CSA was started intravenously on day -1, at the dosage of 3 mg/kg, and switched to oral formulation as soon as the patient was able to take medication after engraftment. The dosage was adjusted to maintain a trough blood level of 200-300ng/ml. MMF was administered orally, 0.25g every 12 hours, from day -1 before transplantation to day 30 after transplantation. The dosage of MTX was 15 mg/m2, administered i.v. on day 1, and 10 mg/m2 on days 3, 6, and 11 after transplantation.

Official Title
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Anti-thymocyte Globulins for GVHD Prophylaxis After HLA-matched Sibling Stem Cell Transplantation in Patients at 40 Years of Age or More With Hematological Malignancies

Conditions
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Leukemia, GVHD, ATG, Transplantation

Intervention / Treatment
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* Drug: anti thymoglobulin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Standard-risk of recipients with hematological malignancies (including AML-CR1, ALL-CR1, CML-CP, MDS-RA, RARS,RCMD,RAEB-1); age from 40 to 60; having HLA-matched sibling donor; Eastern Cooperative Oncology Group (ECOG)≤1, ejection fraction (EF)≥50%; bilirubin≤35µmol/L; AST, and ALT lower than or equall to two-fold baseline;creatinie≤130µmol/L. Exclusion Criteria: Active, uncontrolled infection; severe allergy to ATG, including shock or laryngeal edema; secondary stem cell transplant recipient; haplidentical recipients; matched unrelated donor recipients; non-myeloablative condioning regimen recipients; EF<50%; bilirubin>35µmol/L; AST, and ALT higher than two-fold baseline; creatinie>130µmol/L.

Ages Eligible for Study
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Minimum Age: 40 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: routine prophylaxis<br>In this group, CSA plus MMF and MTX adopted as prevention of GVHD. | Drug: anti thymoglobulin<br> <br> |
| Experimental: ATG prophylaxis<br>In this group,ATG+MMF+CsA+MTX was adopted as prevention of GVHD | Drug: anti thymoglobulin<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of acute GVHD, and chronic GVHD |  | 2 years |