Humanized Anti-CD25 Antibody for Prophylaxis of aGVHD in Elderly Underwent HID-HSCT

Study Overview
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Brief Summary
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Age is no longer a barrier to successful allogeneic hematopoietic cell transplantation. However, the incidence of aGVHD is still high among the elderly, especially for patients receiving HID-HSCT. We designed this clinical trial to use humanized CD25 antibody for aGVHD prophylaxis among in elderly patients aged 50 and older. The humanized CD25 antibody was administered at 1 mg/kg iv on days+1 and +4 after HSCT.

Official Title
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The Administration of Humanized Anti-CD25 Antibody for Prophylaxis of aGVHD in Patients Older Than 50y Underwent HID-HSCT

Conditions
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The Effecacy and Safety of Humanized CD25 Antibody in aGVHD Prophylaxis Among Elderly Patients After HID-HSCT

Intervention / Treatment
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* Drug: CD25 prophylaxis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: (1) hematological malignances patients underwent HLA-haploidentical donor HSCT. (2) Age elder than or equal to 50 years; (3) Informed consent may be signed by themselves. (4) HIV negative, HBV, HCV negative; (5) Informed consent must be signed before the start of the study procedures, and informed consent must be signed by the patient himself or his immediate family. Considering the patient 's condition, if the patient' s signature is unfavorable for disease treatment, the informed consent form should be signed by the legal guardian or the patient 's immediate family member. Exclusion Criteria: (1) received a previous allogeneic HSCT; (2) Uncontrolled infection at enrollment; requires mechanical ventilation or is hemodynamically unstable at the time of enrollment; (3) has severe hepatic insufficiency (defined as Child-Pugh Class C; has serum aspartate aminotransferase (AST) or alanine aminotransferase (ALT) > 5 xthe upper limit of normal (ULN) or serum total bilirubin > 2.5 x ULN. (4) has end-stage renal impairment with a creatinine clearance less than 10 mL/min. (5) has both moderate hepatic insufficiency AND moderate renal insufficiency; (6) has documented positive results for human immunodeficiency virus antibody (HIVAb), hepatitis C virus antibody (HCV-Ab) with detectable HCV RNA, or hepatitis B surface antigen (HBsAg) within 90 days prior to enrollments; (7) has active solid tumor malignancies with the exception of localized basal cell or squamous cell skin cancer or the condition under treatment (e.g., lymphomas). (8) Suffering from mental disorders or other conditions and unable to cooperate with the requirements of study treatment and monitoring; (9) unable or unwilling to sign the consent form; (10) patients with other special conditions assessed as unqualified by the investigator

Ages Eligible for Study
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Minimum Age: 50 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: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: treatment arm<br> | Drug: CD25 prophylaxis<br>* The humanized CD25 antibody was administered at 1 mg/kg iv on days+1 and +4 after HSCT.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the incidence of aGVHD |  | 24 weeks after HSCT |