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Multicenter Study
. 2016 Jul:168:25-29.
doi: 10.1016/j.clim.2016.04.002. Epub 2016 Apr 22.

Klinefelter's syndrome (47,XXY) is in excess among men with Sjögren's syndrome

Affiliations
Multicenter Study

Klinefelter's syndrome (47,XXY) is in excess among men with Sjögren's syndrome

Valerie M Harris et al. Clin Immunol. 2016 Jul.

Erratum in

  • Corrigendum to "Klinefelter's syndrome (47,XXY) is in excess among men with Sjögren's syndrome" [Clin. Immunol. 168 (2016) 25-29].
    Harris VM, Sharma R, Cavett J, Kurien BT, Liu K, Koelsch KA, Rasmussen A, Radfar L, Lewis D, Stone DU, Kaufman CE, Li S, Segal B, Wallace DJ, Weisman MH, Venuturupalli S, Kelly JA, Alarcon-Riquelme ME, Pons-Estel B, Jonsson R, Lu X, Gottenberg JE, Anaya JM, Cunninghame-Graham DS, Huang AJW, Brennan MT, Hughes P, Alevizos I, Miceli-Richard C, Keystone EC, Bykerk VP, Hirschfield G, Xie G, Siminovitch KA, Ng WF, Nordmark G, Bucher SM, Eriksson P, Omdal R, Rhodus NL, Rischmueller M, Rohrer M, Wahren-Herlenius M, Witte T, Mariette X, Lessard CJ, Harley JB, Sivils KL, Scofield RH. Harris VM, et al. Clin Immunol. 2018 Feb;187:137-138. doi: 10.1016/j.clim.2017.11.012. Epub 2017 Dec 7. Clin Immunol. 2018. PMID: 29195081 No abstract available.

Abstract

Primary Sjögren's syndrome (pSS) has a strong female bias. We evaluated an X chromosome dose effect by analyzing 47,XXY (Klinefelter's syndrome, 1 in 500 live male births) among subjects with pSS. 47,XXY was determined by examination of fluorescence intensity of single nucleotide polymorphisms from the X and Y chromosomes. Among 136 pSS men there were 4 with 47,XXY. This was significantly different from healthy controls (1 of 1254 had 47,XXY, p=0.0012 by Fisher's exact test) as well men with rheumatoid arthritis (0 of 363 with 47,XXY), but not different compared to men with systemic lupus erythematosus (SLE) (4 of 136 versus 8 of 306, Fisher's exact test p=NS). These results are consistent with the hypothesis that the number of X chromosomes is critical for the female bias of pSS, a property that may be shared with SLE but not RA.

Keywords: Klinefelter's syndrome; Sex bias; Sjögren's syndrome; X chromosome.

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Figures

Figure 1
Figure 1
X chromosome B plot of a Klinefelter's syndrome subject with 2 diffferent X chromosomes as demonstrated by heterogeneity of X chromosome single nucleotide markers at 0.5 (top panel), and a Klinefelter's syndrome subject with 2 identical X chromosomes as demonstrated by homozygosity of X chromosome single nucleotide markers at 0.0 and 1.0 with none at 0.5 (bottom panel). Both subjects demonstrate a 4 band pattern (0.0, 0.33, 0.67, 1.0) in the pseudoautosomal region 1 (far left) indicating three total sex chromosomes. The X chromosome centromere and banding patterns are represented in the middle diagram.

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