PMID- 38463584 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240312 IS - 1943-8141 (Print) IS - 1943-8141 (Electronic) IS - 1943-8141 (Linking) VI - 16 IP - 2 DP - 2024 TI - Thyroid autoimmunity in relation to HLA-DRB1 and HLA-DQB1 polymorphism in nonsegmental vitiligo: a cross-sectional-study. PG - 524-530 AB - OBJECTIVES: Nonsegmental vitiligo (NSV) is frequently associated with thyroid autoimmunity (TAI), however, the immunopathogenic mechanisms of such association remain to be investigated. The aims of this work were to estimate the frequency of TAI and to describe the genetic polymorphism in the human leukocyte antigen (HLA)-DRB1 and -DQB1 loci in TAI susceptibility among patients with NSV. PATIENTS AND METHODS: In this cross-sectional study, screening for TAI was performed in 97 Moroccan patients with NSV by measuring antibodies against thyroid peroxidase (TPOAb) and thyroglobulin (TGAb). HLA-DRB1 and -DQB1 were determined with single specific primer-polymerase chain reaction (PCR-SSP) typing methods. RESULTS: TAI was diagnosed in 20 patients with NSV (20.6%). The phenotypic frequency of DQB1*05 (OR = 5.04; P = 0.006; pc = 0.036) was significantly higher in NSV patients with TAI. Genotype DQB1*05/DQB1*06 (OR = 25.33; P = 0.001; pc = 0.003) confer susceptibility to TAI in NSV patients. NSV patients with TAI and early onset vitiligo have an extremely high phenotype frequency of DQB1*05 allele (OR = 14.67; P = 0.001; pc = 0.048) and DQB1*05/DQB1*06 genotype (OR = 26.55; P = 0.01; pc = 0.03). TAI in patients with NSV was (6.2%) associated with onset of clinical thyroid disease based on TSH and free T4. CONCLUSION: Our findings suggest that HLA-DQ polymorphisms influence TAI risk in subjects with NSV, although HLA does not completely explain the co-occurrence of these two diseases. CI - AJTR Copyright (c) 2024. FAU - Bouayad, Abdellatif AU - Bouayad A AD - Faculty of Medicine and Pharmacy, Mohammed First University Oujda, Morocco. FAU - Benzekri, Laila AU - Benzekri L AD - Department of Dermatology, Faculty of Medicine and Pharmacy, Mohammed V Souissi University, Ibn Sina Hospital Rabat, Morocco. LA - eng PT - Journal Article DEP - 20240215 PL - United States TA - Am J Transl Res JT - American journal of translational research JID - 101493030 PMC - PMC10918139 OTO - NOTNLM OT - HLA OT - Moroccan population OT - Nonsegmental vitiligo OT - thyroid autoimmunity COIS- None. EDAT- 2024/03/11 06:42 MHDA- 2024/03/11 06:43 PMCR- 2024/02/15 CRDT- 2024/03/11 04:23 PHST- 2023/12/07 00:00 [received] PHST- 2024/01/28 00:00 [accepted] PHST- 2024/03/11 06:43 [medline] PHST- 2024/03/11 06:42 [pubmed] PHST- 2024/03/11 04:23 [entrez] PHST- 2024/02/15 00:00 [pmc-release] AID - 10.62347/LDYE8203 [doi] PST - epublish SO - Am J Transl Res. 2024 Feb 15;16(2):524-530. doi: 10.62347/LDYE8203. eCollection 2024.