alexa Association of Macrophage Capping Protein (CAPG) Arg335His Polymorphism and Cancer Susceptibility in the Elderly Japanese
ISSN: 2167-7182

Journal of Gerontology & Geriatric Research
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Research Article

Association of Macrophage Capping Protein (CAPG) Arg335His Polymorphism and Cancer Susceptibility in the Elderly Japanese

Sariya Dechamethakun1, Noriko Sato1, Shinobu Ikeda1,2, Motoji Sawabe3, Seijiro Mori4, Yoshiji Yamada5, Masashi Tanaka6, Masaaki Muramatsu1 and Tomio Arai7*

1Department of Molecular Epidemiology, Medical Research Institute, Tokyo Medical and Dental University, Japan

2Department of Data Science, Center for Clinical Sciences, National Center for Global Health and Medicine, Japan

3Department of Molecular Pathology, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan

4Center for Promotion of Clinical Investigation, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan

5Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu, Mie, Japan

6Department of Clinical Laboratory, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan

7Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan

*Corresponding Author:
Tomio Arai
Tokyo Metropolitan Geriatric Hospital, 35-2 Sakaecho
Itabashi-Ku, Tokyo 173-0015, Japan
Tel: +81339641141 (ext. 2410)
Fax: +81339641982
E-mail: [email protected]

Received Date: April 09, 2017; Accepted Date: April 24, 2017; Published Date: April 26, 2017

Citation: Dechamethakun S, Sato N, Ikeda S, Sawabe M, Mori S, et al. (2017) Association of Macrophage Capping Protein (CAPG) Arg335His Polymorphism and Cancer Susceptibility in the Elderly Japanese. J Gerontol Geriatr Res 6:417. doi: 10.4172/2167-7182.1000417

Copyright: © 2017 Dechamethakun S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Background: Macrophage capping protein (CAPG), an actin filament end-capping protein, plays an important role in regulation of cellular motility and structural rearrangement within cells and has been implicated with development of various types of cancer. Recent study demonstrated that a CAPG variant was associated with a rare fallopian tube tumor, albeit with a small sample size. The present study aimed to determine the association of CAPG variants with cancer susceptibility.

Methods: Four non-synonymous single nucleotide variations (NSVs), rs2229668 (p.V41I), rs117284777 (p.K227R), rs200233412 (p.A229T) and rs6886 (p.R335H), in CAPG were retrieved from genotyping, by an exome-chip, in 2,317 consecutive autopsy cases (1,284 men and 1,033 women, mean age 80.7 years), in which the presence or absence of cancer was verified pathologically. The association of CAPG variants with presence of cancer and with different types of cancer was determined. Interaction with smoking was also determined.

Results: There were 1,446 cancer-bearing and 897 cancer-free subjects. Among four SNVs, only p.R335H (c.1004C>T) was associated with the presence of cancer (adjusted OR=1.49, 95% CI=1.23-1.81, P=5.08 × 10-5). The association was found in men (adjusted OR=1.64, 95% CI=1.26-2.14, P=2.25 × 10-4), but not in women. Investigation with different types of cancer revealed that gastric cancer showed a positive association (adjusted OR=1.61, 95% CI=1.16-2.24, P=0.005) in men. The effect size of CAPG variants showed no difference between smokers and nonsmokers.

Conclusions: Our study suggests that a non-synonymous SNV of CAPG, p.R335H, affects cancer susceptibility in men without interaction with smoking habit and that the SNV is associated with gastric cancer in men.

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