Volume 66, Issue 5 pp. 646-651

Linkage of Graves’ disease to the human leucocyte antigen region in the Chinese-Han population in Taiwan

Pei-Lung Chen

Pei-Lung Chen

Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital,

Program in Human Genetics, Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA

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Cathy Shen-Jang Fann

Cathy Shen-Jang Fann

Institute of Biomedical Sciences, Academia Sinica,

Institute of Public Health, National Yang-Ming University, Taipei, Taiwan, and

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Chien-Ching Chang

Chien-Ching Chang

Institute of Biomedical Sciences, Academia Sinica,

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I-Lin Wu

I-Lin Wu

Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital,

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Wei-Yih Chiu

Wei-Yih Chiu

Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital,

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Chin-Yu Lin

Chin-Yu Lin

Institute of Biomedical Sciences, Academia Sinica,

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Wei-Shiung Yang

Wei-Shiung Yang

Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital,

Institute of Biomedical Sciences, Academia Sinica,

Graduate Institute of Clinical Medicine and

Department of Medicine, College of Medicine, National Taiwan University,

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Tien-Chun Chang

Tien-Chun Chang

Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital,

Department of Medicine, College of Medicine, National Taiwan University,

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First published: 13 February 2007
Citations: 8
Tien-Chun Chang or Wei-Shiung Yang, Department of Internal Medicine, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei 100, Taiwan. Tel.: 886 2 23123456, ext: 5034; Fax: 886 2 25930146; E-mail: [email protected] or [email protected]

Summary

Objective To investigate whether markers in the candidate chromosome regions, including the human leucocyte antigen (HLA) region, are linked to Graves’ disease (GD).

Design A familial linkage study with a candidate region approach.

Patients A total of 536 individuals in 122 multiplex Chinese-Han families with a GD proband and at least one other affected sibling, resulting in 270 affected sib-pairs. Subjects with a family history of noniatrogenic hypothyroidism or Hashimoto's thyroiditis were excluded.

Measurements We genotyped eight short tandem repeat polymorphism (STRP) markers in a 13·7 cM region covering the HLA region on chromosome 6p21 and 26 STRPs in four other candidate regions previously reported in the literature.

Results Multipoint nonparametric linkage (NPL) analysis showed significant linkage to the HLA region [the marker UniSTS:239159, nonparametric log of odds (LOD) score 3·44, P = 0·00003; NPL Z-score 4·1, P = 0·00002] from 270 affected sib-pairs. The 1-LOD support interval comprised the whole HLA region (ca. 4 Mb). By contrast, the maximal NPL Z-scores of the markers of the other candidate regions (2q33, 5q31, 7q22 and 14q31) previously reported were all less than 1·0.

Conclusions Our results provide strong support for linkage of GD to the HLA region. Further dissection of this region to identify the candidate gene for GD is warranted in our population.

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