March 18, 2026 · Blood · DOI: 10.1182/blood.2025032569

Randomized trial of GvHD Prophylaxis in Haploidentical PBSC Transplantation: ATG, PTCy, and Low-Dose Combination Therapy

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The authors aimed to determine the efficacy of different graft-versus-host disease (GvHD) prophylaxis strategies in haploidentical peripheral blood stem cell transplantation (haplo-PBSCT) for patients with acute myeloid leukemia or myelodysplastic syndromes. In a randomized phase III trial involving 407 patients, they found that low-dose ATG combined with PTCy, standard-dose ATG, and PTCy alone had similar effectiveness in preventing grade II-IV acute GvHD and comparable survival rates, although the combination regimen showed significantly better neutrophil and platelet recovery.

Jun Yang, Yannan Jia, Xiaoxia Hu, Fang Zhou, Xiong Ni, Jiangbo Wan, Yi Ding, Mei Kang, Xiaolin Yu, Chuanhe Jiang, Luxiang Wang, Liping Wan, Yu Cai, Chongmei Huang, Huiying Qiu, Xueying Ding, Yin Tong, Baoxia Dong, Kun Zhou, Xianmin Song

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