Haploidentical stem cell transplantation for aplastic anemia: the current advances and future challenges

Area of Science:

• Hematology
• Transplantation Immunology

Background:

• Severe aplastic anemia (SAA) is a life-threatening condition.
• Hematopoietic stem cell transplantation (HSCT) is a curative option for SAA.
• Finding matched donors for HSCT can be challenging.

Purpose of the Study:

• To review clinical outcomes of haploidentical HSCT (haplo-HSCT) for SAA.
• To highlight advances in haplo-HSCT regimens for SAA treatment.
• To discuss challenges and future directions in haplo-HSCT for SAA.

Main Methods:

• Overview of clinical results from various haplo-HSCT regimens.
• Focus on G-CSF/ATG, PT-Cy, and TCD-based strategies.
• Analysis of survival outcomes, graft failure, and GvHD.

Main Results:

• Haplo-HSCT has achieved inspiring survival outcomes in SAA.
• G-CSF/ATG-based regimens show large sample sizes and wide use, especially in China.
• PT-Cy and TCD regimens are practicable alternatives, though with smaller sample sizes.

Conclusions:

• Haplo-HSCT is a crucial option for SAA patients lacking matched donors.
• Regimen selection is key to overcoming HSCT challenges in SAA.
• Continued research is needed to optimize haplo-HSCT for SAA.