Approach to the patient with APS-1/APECED
Taura Webb1, Joseph Pechacek1, Michail S Lionakis1
1Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA.
The Journal of Clinical Endocrinology and Metabolism
|July 16, 2026
Summary
Autoimmune polyendocrine syndrome type 1 (APS-1) is a genetic disorder affecting immune tolerance. Early diagnosis and recognizing non-endocrine symptoms are crucial for managing this complex condition.
Area of Science:
- Immunology
- Genetics
- Endocrinology
Background:
- Autoimmune polyendocrine syndrome type 1 (APS-1), or APECED, is a monogenic disorder caused by AIRE gene variants, leading to immune tolerance defects.
- It classically presents with chronic mucocutaneous candidiasis and multiorgan autoimmunity, often preceded by non-endocrine manifestations like enteritis and rash.
- Endocrinologists play a key role in early APS-1 recognition and patient management.
Purpose of the Study:
- To illustrate the expanding clinical spectrum of APS-1.
- To highlight novel genetic mechanisms and diagnostic challenges.
- To discuss emerging therapeutic strategies for APS-1.
Main Methods:
- Case study analysis of five patients with APS-1.
- Review of clinical criteria and genetic testing limitations.
- Exploration of mechanistic insights and targeted immunomodulatory therapies.
Main Results:
- The study presents five cases showcasing the diverse clinical presentations of APS-1.
- It emphasizes the need for expanded diagnostic criteria and consideration of atypical AIRE variants (deep intronic, dominant-negative).
- APS-1 is increasingly understood as an IFN-γ-driven disease, supporting targeted therapies.
Conclusions:
- Early recognition of APS-1, including non-endocrine symptoms, is vital for timely diagnosis and management.
- Limitations in standard genetic testing necessitate broader diagnostic approaches.
- Targeted immunomodulatory therapies, like JAK inhibition, show promise for APS-1 treatment.
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