Impact of Month of Birth on the Risk of Development of Autoimmune Addison's Disease
Overview
Authors
Affiliations
Context: The pathogenesis of autoimmune Addison's disease (AAD) is thought to be due to interplay of genetic, immune, and environmental factors. A month-of-birth effect, with increased risk for those born in autumn/winter months, has been described in autoimmune conditions such as type 1 diabetes and autoimmune thyroid disease.
Objective: Month-of-birth effect was investigated in 2 independent cohorts of AAD subjects.
Design, Setting, And Patients: The monthly distribution of birth in AAD patients was compared with that of the general population using the cosinor test. A total of 415 AAD subjects from the United Kingdom cohort were compared with 8 180 180 United Kingdom births, and 231 AAD subjects from the Polish cohort were compared with 2 421 384 Polish births.
Main Outcome Measures: Association between month of birth and the susceptibility to AAD.
Results: In the entire cohort of AAD subjects, month-of-birth distribution analysis showed significant periodicity with peak of births in December and trough in May (P = .028). Analysis of the odds ratio distribution based on month of birth in 2 cohorts of patients with AAD versus the general population revealed a December peak and May trough, and January peak and July trough, in the United Kingdom and Polish cohorts, respectively.
Conclusion: For the first time, we demonstrate that month of birth exerts an effect on the risk of developing AAD, with excess risk in individuals born in winter months and a protective effect when born in the summer. Exposure to seasonal viral infections in the perinatal period, coupled with vitamin D deficiency, could lead to dysregulation of innate immunity affecting the risk of developing AAD.
Euren A, Lynch K, Lindfors K, Parikh H, Koletzko S, Liu E Sci Rep. 2024; 14(1):25463.
PMID: 39462122 PMC: 11567144. DOI: 10.1038/s41598-024-75496-w.
Vitamin D and adrenal gland: Myth or reality? A systematic review.
Al Refaie A, Baldassini L, De Vita M, Gonnelli S, Caffarelli C Front Endocrinol (Lausanne). 2022; 13:1001065.
PMID: 36313775 PMC: 9606701. DOI: 10.3389/fendo.2022.1001065.
Davis Jr G, Davis M, Lowell W Heliyon. 2022; 8(3):e09197.
PMID: 35368522 PMC: 8969152. DOI: 10.1016/j.heliyon.2022.e09197.
Bellan M, Andreoli L, Mele C, Sainaghi P, Rigamonti C, Piantoni S Nutrients. 2020; 12(3).
PMID: 32192175 PMC: 7146294. DOI: 10.3390/nu12030789.
The potential role for infections in the pathogenesis of autoimmune Addison's disease.
Hellesen A, Bratland E Clin Exp Immunol. 2018; 195(1):52-63.
PMID: 30144040 PMC: 6300649. DOI: 10.1111/cei.13207.