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J Gerontol A Biol Sci Med Sci. 2017 Aug 1;72(8):1038-1044. doi: 10.1093/gerona/glw116.

Association of Polymorphisms in Connective Tissue Growth Factor and Epidermal Growth Factor Receptor Genes With Human Longevity.

Author information

1
Department of Research, Honolulu Heart Program/Honolulu-Asia Aging Study (HAAS), Kuakini Medical Center, Hawaii.
2
Department of Cell and Molecular Biology and Department of Pathology, John A. Burns School of Medicine, University of Hawaii Manoa, Honolulu.
3
Basic & Clinical Genomics Laboratory, School of Medical Sciences and Bosch Institute, University of Sydney, New South Wales, Australia.
4
Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu.
5
Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii Manoa, Honolulu, Hawaii.
6
Department of Human Welfare, Okinawa International University, Japan.
7
California Pacific Medical Center Research Institute, San Francisco.
8
Institute of Clinical Molecular Biology, Kiel University, Germany.
9
Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, South Korea.

Abstract

Growth pathways play key roles in longevity. The present study tested single-nucleotide polymorphisms (SNPs) in the connective tissue growth factor gene (CTGF) and the epidermal growth factor receptor gene (EGFR) for association with longevity. Comparison of allele and genotype frequencies of 12 CTGF SNPs and 41 EGFR SNPs between 440 American men of Japanese ancestry aged ≥95 years and 374 men of average life span revealed association with longevity at the p < .05 level for 2 SNPs in CTGF and 7 in EGFR. Two in CTGF and two in EGFR remained significant after Bonferroni correction. The SNPs of both CTGF and EGFR were in a haplotype block in each respective gene. Haplotype analysis confirmed the suggestive association found by χ2 analysis. We noted an excess of heterozygotes among the longevity cases, consistent with heterozygote advantage in living to extreme old age. No associations of the most significant SNPs were observed in whites or Koreans. In conclusion, the present findings indicate that genetic variation in CTGF and EGFR may contribute to the attainment of extreme old age in Japanese. More research is needed to confirm that genetic variation in CTGF and EGFR contributes to the attainment of extreme old age across human populations.

KEYWORDS:

Case–control study; Connective tissue growth factor; Epidermal growth factor; Longevity; Molecular genetics

PMID:
27365368
PMCID:
PMC5861942
DOI:
10.1093/gerona/glw116
[Indexed for MEDLINE]
Free PMC Article

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