Evaluation of Recombinant Humanized Anti-CD25 Monoclonal Antibody for Preventing Graft-versus-host Disease After Haploidentical/matched Unrelated Donor Hematopoietic Stem Cell Transplantation in Patients with Transfusion-dependent Thalassemia

Rongrong Liu

Status and phase: Enrolling; Phase 2

Conditions: Transfusion Dependent Thalassemia

Treatments: Drug: recombinant humanized anti-CD25 monoclonal antibody

Study type: Interventional

Funder types: Other

Identifiers

NCT06657391

2024-K387-01

Details and patient eligibility

About

Graft-versus-host disease (GVHD) is a major factor affecting the efficacy and quality of life of alternative donor transplantation in thalassemia major (TM), severely limiting the clinical application of alternative donor transplantation in TM.The purpose of this clinical trial is to evaluate whether recombinant humanized anti-CD25 monoclonal antibody is effective in preventing GVHD and its safety after haploidentical/matched unrelated donor hematopoietic stem cell transplantation. The main questions it aims to answer are:

• Does recombinant humanized anti-CD25 monoclonal antibody reduce the incidence of GVHD disease after haploidentical/matched unrelated donor hematopoietic stem cell transplantation?
• What medical problems will participants experience when using the recombinant humanized anti-CD25 monoclonal antibody? What is the quality of life after 2 years follow-up? In this clinical trail, participants will be randomly assigned to the intervention group or the control group by researchers in a 2:1 ratio. The intervention group will be given recombinant humanized anti-CD25 monoclonal antibody (1mg/Kg) combined with the standard GVHD prophylaxis after transplantation, while the control group will only receive the standard GVHD prophylaxis. The incidence of GVHD after transplantation in the two groups will be observed. The main evaluation is the clinical efficacy of recombinant humanized anti-CD25 monoclonal antibody in preventing aGVHD.

Enrollment: 396 estimated patients

Sex: All

Ages: 3 to 20 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• patients with transfusion-dependent thalassemia;
• patients who are planning to receive matched unrelated donor hematopoietic stem cell transplantation (MUD-HSCT) or HLA haploidentical donor hematopoietic stem cell transplantation (HID-HSCT);
• physical condition score (Lansky/Karnofsky score) ≥ 70%;
• patients (or legal guardians) voluntarily participate in the study and sign the informed consent form

Exclusion criteria

• patients with HLA-matched hematopoietic stem cell donors and willing to receive HLA-matched hematopoietic stem cell transplantation;
• patients with known infectious diseases such as hepatitis B, hepatitis C, AIDS, syphilis, human T-lymphotropic virus, etc.;
• patients with serious active bacterial, viral, fungal, malaria or parasitic infections;
• patients with autoimmune deficiency diseases;
• patients with a history of malignant tumors or current malignant tumors;
• patients with important organ diseases or abnormal laboratory tests, including but not limited to: 1) patients with cirrhosis, liver fibrosis or active hepatitis, and/or abnormal liver function tests (alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≥2.5×ULN; alkaline phosphatase ≥2.5×ULN); 2) patients with heart disease, or left ventricular ejection fraction (LVEF) <60%, or severe iron deposition in the heart; 3) kidney disease, or blood creatinine ≥1.5×ULN with creatinine clearance <30% of normal level; 4) patients with endocrine dysfunction;
• patients with uncorrected bleeding disease;
• patients with severe mental illness (such as severe depression, schizophrenia, etc.) or cognitive dysfunction (dementia, delirium, etc.), which are unable to cooperate with the study;
• peripheral blood white blood cell (WBC) count <3×10^9/L or platelet count <100×10^9/L;
• patients having received thalidomide treatment within the past 3 months;
• patients having received any type of gene and/or cell therapy in the past;
• patients with severe allergies;
• female patients who are pregnant, breastfeeding, or planning to become pregnant within 1 year of participating in this trial;
• patients who are participating in other clinical trials;
• other situations that are not suitable for participation in this clinical trial as assessed by the investigator.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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396 participants in 2 patient groups

intervention group

Experimental group

Description:

The intervention group will receive 4 doses of recombinant humanized anti-CD25 monoclonal antibody (Sunshine Guojian Pharmaceutical(Shanghai) Co.,Ltd.) on days +7, +14, +28, and +42 after transplantation, with a recommended dose of 1 mg/kg.

Treatment:

Drug: recombinant humanized anti-CD25 monoclonal antibody

control group

No Intervention group

Description:

The control group will receive no treatment at the same time points.