Pediatric immune deficiencies: current treatment approaches

Area of Science:

• Immunology
• Hematology
• Pediatric Medicine

Background:

• Inborn errors of immunity (IEIs) are a group of genetic disorders affecting the immune system.
• Hematopoietic cell transplantation (HCT) and gene therapy are established curative treatments for severe IEIs.
• The availability of matched sibling or related donors limits HCT accessibility for many patients.

Purpose of the Study:

• To review current definitive therapies for IEIs.
• To highlight recent advancements in allogeneic HCT and gene therapy for IEIs.
• To discuss novel approaches including alternative donors, graft manipulation, and reduced-toxicity conditioning.

Main Methods:

• Review of recent literature on HCT and gene therapy for IEIs.
• Analysis of outcomes for haploidentical HCT (HHCT) and autologous gene therapy.
• Discussion of emerging conditioning regimens and gene transfer techniques.

Main Results:

• Haploidentical HCT (HHCT) with various T-cell depletion strategies shows encouraging survival rates.
• Autologous gene therapy using safer vectors and reduced-intensity conditioning yields successful and reproducible results.
• Both HHCT and gene therapy are emerging as viable therapeutic options for IEIs.

Conclusions:

• HCT and gene therapy for IEIs are rapidly evolving fields.
• These advanced therapies aim to improve efficacy, safety, and accessibility for a broader patient population.
• Continued research is crucial for refining these life-saving treatments.