PMID- 19884265 OWN - NLM STAT- MEDLINE DCOM- 20100217 LR - 20161018 IS - 1479-683X (Electronic) IS - 0804-4643 (Linking) VI - 162 IP - 2 DP - 2010 Feb TI - Cytotoxic T lymphocyte antigen-4 Ala17 polymorphism is a genetic marker of autoimmune adrenal insufficiency: Italian association study and meta-analysis of European studies. PG - 361-9 LID - 10.1530/EJE-09-0618 [doi] AB - OBJECTIVE: Cytotoxic T lymphocyte antigen-4 (CTLA4) gene polymorphism has been associated with human autoimmune diseases, but discordant data are available on its association with autoimmune Addison's disease (AAD). We tested the human leukocyte antigen (HLA)-independent association of CTLA4+49 (A/G) (Ala 17) and/or CTLA4 CT60 (A/G) polymorphism with AAD. DESIGN: DNA samples from 180 AAD patients and 394 healthy control subjects from continental Italy were analyzed, and association statistical analyses and meta-analysis of published studies were performed. Methods TaqMan minor groove binder chemistry assays and PCR fragment length polymorphism assays were used. RESULTS: Frequency of allele G of CTLA4+49 was significantly increased among AAD patients (40% alleles) than among healthy controls (27% alleles; P<0.0001). CTLA4 CT60 polymorphism was associated with AAD only in the heterozygous A/G individuals. The frequency of +49 AG+GG genotypes was significantly higher among AAD patients than among healthy control subjects, in both a co-dominant (P<0.0001) and G dominant model (P<0.0001). CTLA4+49 allele G was significantly associated with disease risk in both patients with isolated AAD and in patients with autoimmune polyendocrine syndrome. Multivariate logistic regression analysis showed that CTLA4+49 allele G was positively associated with AAD (P<0.0001, odds ratio (OR)=2.43, 95% confidence interval=1.54-3.86) also after correction for DRB1*03-DQA1*0501-DQB1*0201, DRB1*04-DQA1*0301-DQB1*0302, and sex. Meta-analysis of five studies revealed a significant association of CTLA4+49 allele G with AAD (P<0.0001) with an overall OR of 1.48 (1.28-1.71). CONCLUSIONS: The CTLA4+49 polymorphism is strongly associated with genetic risk for AAD, independently from the well-known association with HLA class II genes. FAU - Brozzetti, Annalisa AU - Brozzetti A AD - Section of Internal Medicine and Endocrine and Metabolic Sciences, Department of Internal Medicine, University of Perugia, Via Enrico Dal Pozzo, 06126 Perugia, Italy. FAU - Marzotti, Stefania AU - Marzotti S FAU - Tortoioli, Cristina AU - Tortoioli C FAU - Bini, Vittorio AU - Bini V FAU - Giordano, Roberta AU - Giordano R FAU - Dotta, Francesco AU - Dotta F FAU - Betterle, Corrado AU - Betterle C FAU - De Bellis, Annamaria AU - De Bellis A FAU - Arnaldi, Giorgio AU - Arnaldi G FAU - Toscano, Vincenzo AU - Toscano V FAU - Arvat, Emanuela AU - Arvat E FAU - Bellastella, Antonio AU - Bellastella A FAU - Mantero, Franco AU - Mantero F FAU - Falorni, Alberto AU - Falorni A CN - Italian Addison Network LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't DEP - 20091102 PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 RN - 0 (Antigens, CD) RN - 0 (CTLA-4 Antigen) RN - 0 (CTLA4 protein, human) RN - 0 (Genetic Markers) RN - OF5P57N2ZX (Alanine) SB - IM MH - Addison Disease/*epidemiology/*genetics/immunology MH - Alanine/genetics MH - Antigens, CD/*genetics/immunology MH - Autoimmune Diseases/*genetics/immunology MH - CTLA-4 Antigen MH - Genetic Markers MH - Humans MH - Italy/epidemiology MH - *Polymorphism, Genetic MH - Risk Factors FIR - Ambrosi, B IR - Ambrosi B FIR - Angeli, A IR - Angeli A FIR - Baccarelli, A IR - Baccarelli A FIR - Barbetta, L IR - Barbetta L FIR - Basta, G IR - Basta G FIR - Beck-Peccoz, P IR - Beck-Peccoz P FIR - Bizzarro, A IR - Bizzarro A FIR - Boscaro, M IR - Boscaro M FIR - Calcinaro, F IR - Calcinaro F FIR - Cavagnini, F IR - Cavagnini F FIR - Celleno, R IR - Celleno R FIR - Dal Pra, C IR - Dal Pra C FIR - Ghigo, E IR - Ghigo E FIR - Laureti, S IR - Laureti S FIR - Libe, R IR - Libe R FIR - Lore, F IR - Lore F FIR - Mannelli, M IR - Mannelli M FIR - Mantovani, G IR - Mantovani G FIR - Paccotti, P IR - Paccotti P FIR - Pecori Giraldi, F IR - Pecori Giraldi F FIR - Perniola, R IR - Perniola R FIR - Santeusanio, F IR - Santeusanio F FIR - Terzolo, M IR - Terzolo M FIR - Tiberti, C IR - Tiberti C FIR - Toja, P IR - Toja P FIR - Torlontano, M IR - Torlontano M FIR - Trischitta, V IR - Trischitta V FIR - Zanchetta, R IR - Zanchetta R EDAT- 2009/11/04 06:00 MHDA- 2010/02/18 06:00 CRDT- 2009/11/04 06:00 PHST- 2009/11/04 06:00 [entrez] PHST- 2009/11/04 06:00 [pubmed] PHST- 2010/02/18 06:00 [medline] AID - EJE-09-0618 [pii] AID - 10.1530/EJE-09-0618 [doi] PST - ppublish SO - Eur J Endocrinol. 2010 Feb;162(2):361-9. doi: 10.1530/EJE-09-0618. Epub 2009 Nov 2.