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Molecular genetic analyses of human NKG2C (KLRC2) gene deletion

Human NKG2A, NKG2C and NKG2E genes are located on 12p13 in the NK gene complex. We recently identified deletion of NKG2C in a Japanese population. This study was performed to identify the breakpoint, and to examine the association of NKG2C deletion with susceptibility to rheumatoid arthritis and sys...

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Published in:International immunology 2004-01, Vol.16 (1), p.163-168
Main Authors: Miyashita, Risa, Tsuchiya, Naoyuki, Hikami, Koki, Kuroki, Kimiko, Fukazawa, Toru, Bijl, Marc, Kallenberg, Cees G. M., Hashimoto, Hiroshi, Yabe, Toshio, Tokunaga, Katsushi
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container_title International immunology
container_volume 16
creator Miyashita, Risa
Tsuchiya, Naoyuki
Hikami, Koki
Kuroki, Kimiko
Fukazawa, Toru
Bijl, Marc
Kallenberg, Cees G. M.
Hashimoto, Hiroshi
Yabe, Toshio
Tokunaga, Katsushi
description Human NKG2A, NKG2C and NKG2E genes are located on 12p13 in the NK gene complex. We recently identified deletion of NKG2C in a Japanese population. This study was performed to identify the breakpoint, and to examine the association of NKG2C deletion with susceptibility to rheumatoid arthritis and systemic lupus erythematosus. The location of the breakpoint was determined to be 1.5–1.8 kb telomeric from the 3′ end of NKG2A by comparing sequences of the intergenic segments upstream and downstream of the NKG2C gene in the common haplotype with the intergenic sequence between NKG2A and NKG2E in the deletion haplotype. Based on this information, a genotyping system was developed. The frequency of NKG2C deletion haplotype was 20.2% in Japanese and 20.0% in Dutch populations. The frequency of homozygous deletion was 4.1% in Japanese and 3.8% in Dutch. Evidence for an association with rheumatic diseases was not detected. These results indicated that NKG2C deletion is commonly present in Japanese and Dutch, suggesting that NKG2C is not essential for survival and reproduction, and is not associated with rheumatic diseases.
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source Oxford Academic Journals (OUP)
subjects Adult
Arthritis, Rheumatoid - epidemiology
Arthritis, Rheumatoid - genetics
Base Sequence
Case-Control Studies
Gene Deletion
Genetic Predisposition to Disease
genome
Genotype
Humans
Japan - epidemiology
Killer Cells, Natural - physiology
Linkage Disequilibrium - genetics
Lupus Erythematosus, Systemic - epidemiology
Lupus Erythematosus, Systemic - genetics
Middle Aged
Molecular Sequence Data
Netherlands - epidemiology
NK cell
NK Cell Lectin-Like Receptor Subfamily C
Polymerase Chain Reaction
polymorphism
Receptors, Immunologic - genetics
Receptors, Natural Killer Cell
rheumatoid arthritis
systemic lupus erythematosus
title Molecular genetic analyses of human NKG2C (KLRC2) gene deletion
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