Keeping up with recent developments in immunodeficiency

Area of Science:

• Immunology
• Genetics
• Clinical Medicine

Background:

• Inborn errors of immunity (IEIs) represent a growing category of monogenetic immune system disorders.
• Recent breakthroughs in genetic testing and functional studies have significantly accelerated the discovery of IEI genes and disease mechanisms.
• The International Union of Immunological Societies (IUIS) has updated IEI classifications, with the latest in 2022, now encompassing over 485 disorders across 10 main groups.

Purpose of the Study:

• To review recent clinical advancements in the field of IEIs.
• To provide an in-depth look at newly identified IEI disorders.
• To offer guidance on the diagnosis, management, and treatment of IEIs.

Main Methods:

• Literature review of recent clinical developments in IEIs.
• Analysis of the 2022 IUIS IEI classification.
• Highlighting specific IEI disorders with phenotypes including severe atopy, immune dysregulation, lymphoproliferation, autoinflammation, and innate immune defects.

Main Results:

• The number of described IEIs has surpassed 485, categorized into 10 main groups.
• Recent discoveries have expanded the understanding of IEI genetics and disease mechanisms.
• Specific IEI phenotypes such as severe atopy, immune dysregulation, and autoinflammation are increasingly recognized.

Conclusions:

• Clinicians can utilize an updated diagnostic approach for suspected IEIs.
• Management and treatment strategies for IEIs are evolving with new discoveries.
• Continued research and classification updates are crucial for addressing the expanding landscape of IEIs.