Autoimmune polyendocrine syndrome type 1
Other namesAutoimmune polyendocrinopathy-candidiasis–ectodermal dystrophy/dysplasia (APECED),

Autoimmune polyglandular syndrome type 1, Whitaker syndrome,

Candidiasis-hypoparathyroidism–Addison's disease syndrome
Autoimmune polyendocrine syndrome type 1 is autosomal recessive
SpecialtyEndocrinology, medical genetics
Symptomschronic mucocutaneous candidiasis
Causesmutation in AIRE gene
Diagnostic methodCT scan, biopsy
Treatmenthormone therapy, antifungals, immunosuppression

Autoimmune polyendocrine syndrome type 1 (APS-1), is a subtype of autoimmune polyendocrine syndrome (autoimmune polyglandular syndrome). It causes the dysfunction of multiple endocrine glands due to autoimmunity. It is a genetic disorder, inherited in autosomal recessive fashion due to a defect in the AIRE gene (autoimmune regulator), which is located on chromosome 21 and normally confers immune tolerance.[1][2][3]

Signs and symptoms

APS-1 tends to cause severe symptoms.[4] These are present from early in life, usually around 3.5 years of age.[4] Common symptoms of APS-1 include:

APS-1 may also cause:

Cause

Chromosome 21

APS-1 is caused by a mutation in the AIRE gene, encoding a protein called autoimmune regulator. This is found on the 21q22.3 chromosome location, hence chromosome 21.[1][2][6] The AIRE gene may be affected by any of at least 186 mutations.[7] APS-1 may be inherited in an autosomal recessive manner.[8]

Different mutations are more common in different geographic regions. R139X is a common mutation in Sardinia.[4] R257* is a common mutation in Finland.[5] Both of these mutations are nonsense mutations: the asterisk and the "X" both indicate a stop codon.[7] A 13-base-pair deletion in the AIRE gene, c.967-979del13bp, has been identified in APS-1 patients in Norway, Britain[8] and North America.[9][10]

Pathophysiology

APS-1 is due to problems with immune tolerance.[11] APS-1 causes considerable reactions with both interferon omega and interferon alpha.[4][12] There may also be a reaction against interleukin 22.[4] This leads to damage to endocrine organs.[4] Common problems include hypercalcaemia and nephrocalcinosis (due to a lack of calcitonin from the thyroid), and pituitary problems (such as growth hormone deficiency).[4] Antibodies against NLRP5 may lead to hypoparathyroidism.

Diagnosis

Endoscope

Diagnosis of APS-1 is based on a number of tests, including endoscopy, a CT scan,[12] a biopsy (with histological testing),[12] and serum endocrine autoantibody screening.

Treatment

Autoimmune polyendocrine syndrome type 1 treatment is based on the symptoms that are presented by the affected individual. Treatments may involve hormone therapy,[13] systemic antifungal treatments,[4][13] and immunosuppression.[13]

History

APS-1 may also be known as autoimmunity endocrinopathy candidiasis ectodermal dystrophy / dysplasia (APECED), autoimmune polyglandular syndrome type 1, Whitaker syndrome,[12] or candidiasis-hypoparathyroidism-Addison's disease syndrome.[14]

See also

References

  1. 1 2 "AIRE gene". Genetics Home Reference. Retrieved 2017-04-04.
  2. 1 2 "APECED". Retrieved 2017-04-04.
  3. ↑ Shoenfeld Y, Cervera R, Gershwin ME (2010-06-08). Diagnostic Criteria in Autoimmune Diseases. Springer Science & Business Media. p. 265. ISBN 9781603272858.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Meloni, Antonella; Willcox, Nick; Meager, Anthony; Atzeni, Michela; Wolff, Anette S. B.; Husebye, Eystein S.; Furcas, Maria; Rosatelli, Maria Cristina; Cao, Antonio; Congia, Mauro (April 2012). "Autoimmune Polyendocrine Syndrome Type 1: An Extensive Longitudinal Study in Sardinian Patients". The Journal of Clinical Endocrinology & Metabolism. 97 (4): 1114–1124. doi:10.1210/jc.2011-2461. ISSN 0021-972X. PMID 22344197.
  5. 1 2 Orlova, Elizaveta M; Sozaeva, Leila S; Kareva, Maria A; Oftedal, Bergithe E; Wolff, Anette S B; Breivik, Lars; Zakharova, Ekaterina Y; Ivanova, Olga N; Kämpe, Olle; Dedov, Ivan I; Knappskog, Per M (2017-07-20). "Expanding the Phenotypic and Genotypic Landscape of Autoimmune Polyendocrine Syndrome Type 1". The Journal of Clinical Endocrinology & Metabolism. 102 (9): 3546–3556. doi:10.1210/jc.2017-00139. ISSN 0021-972X. PMID 28911151. S2CID 3822560.
  6. ↑ "Autoimmune Polyglandular Syndrome Type 1 (APS-1)". NIH: National Institute of Allergy and Infectious Diseases. Retrieved 2017-04-16.
  7. 1 2 D.N. Cooper; E.V. Ball; P.D. Stenson; A.D. Phillips; K. Evans; S. Heywood; M.J. Hayden; M.M. Chapman; M.E Mort; L. Azevedo; D.S. Millar (eds.). "AIRE". The Human Gene Mutation Database. Institute of Medical Genetics in Cardiff. Retrieved 22 August 2023.
  8. 1 2 Pearce SH, Cheetham T, Imrie H, Vaidya B, Barnes ND, Bilous RW, Carr D, Meeran K, Shaw NJ, Smith CS, Toft AD, Williams G, Kendall-Taylor P (1998). "A Common and Recurrent 13-bp Deletion in the Autoimmune Regulator Gene in British Kindreds with Autoimmune Polyendocrinopathy Type 1". American Journal of Human Genetics. 63 (6): 1675–1684. doi:10.1086/302145. PMC 1377639. PMID 9837820.
  9. ↑ Bruserud Ø, Oftedal BE, Wolff AB, Husebye ES (2016). "AIRE-mutations and autoimmune disease". Current Opinion in Immunology. 43: 8–15. doi:10.1016/j.coi.2016.07.003. PMID 27504588.
  10. ↑ Qian G, Yan X, Xuan J, Zheng D, He Z, Shen J (2022). "A novel AIRE mutation leads to autoimmune polyendocrine syndrome type-1". Frontiers in Cell and Developmental Biology. 10. doi:10.3389/fcell.2022.948350. PMC 9441485. PMID 36072346. 948350.
  11. ↑ De Martino L, Capalbo D, Improda N, D'Elia F, Di Mase R, D'Assante R, et al. (October 2013). "APECED: A Paradigm of Complex Interactions between Genetic Background and Susceptibility Factors". Frontiers in Immunology. 4: 331. doi:10.3389/fimmu.2013.00331. PMC 3805967. PMID 24167503.
  12. 1 2 3 4 Aldasouqi, Saleh A. (15 November 2016). "Type I Polyglandular Autoimmune Syndrome". emedicine.medscape.com. Medscape. Archived from the original on 2008-12-09. Retrieved 20 November 2020.
  13. 1 2 3 INSERM RESERVED. "Orphanet: Autoimmune polyendocrinopathy type 1". www.orpha.net. Retrieved 2017-04-22.
  14. ↑ Greenspan, F. S.; Gardner, D. C. (2004). Basic clinical endocrinology. New York: McGraw-Hill. pp. 103. ISBN 978-0-07-140297-2.

Further reading

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