title: Linkage and association of successful aging to the 6q25 region in large Amish kindreds.
abstract: Successful aging (SA) is a multidimensional phenotype involving living to older age with high physical function, preserved cognition, and continued social engagement. Several domains underlying SA are heritable, and identifying health-promoting polymorphisms and their interactions with the environment could provide important information regarding the health of older adults. In the present study, we examined 263 cognitively intact Amish individuals age 80 and older (74 SA and 189 "normally aged") all of whom are part of a single 13-generation pedigree. A genome-wide association study of 630,309 autosomal single nucleotide polymorphisms (SNPs) was performed and analyzed for linkage using multipoint analyses and for association using the modified quasi-likelihood score test. There was evidence for linkage on 6q25-27 near the fragile site FRA6E region with a dominant model maximum multipoint heterogeneity LOD score = 3.2. The 1-LOD-down support interval for this linkage contained one SNP for which there was regionally significant evidence of association (rs205990, p = 2.36 × 10(-5)). This marker survived interval-wide Bonferroni correction for multiple testing and was located between the genes QKI and PDE10A. Other areas of chromosome 6q25-q27 (including the FRA6E region) contained several SNPs associated with SA (minimum p = 2.89 × 10(-6)). These findings suggest potentially novel genes in the 6q25-q27 region linked and associated with SA in the Amish; however, these findings should be verified in an independent replication cohort.
authors: Dr. John T. Macdonald Foundation Department of Human Genetics and John P. Hussman Institute of Human Genomics, Miller School of Medicine, University of Miami, 1501 NW 10th Avenue, Room 414, Miami, FL 33136, USA.
authors: Digna R Velez
authors: DR
authors: Edwards
authors: John R
authors: JR
authors: Gilbert
authors: James E
authors: JE
authors: Hicks
authors: Jamie L
authors: JL
authors: Myers
authors: Lan
authors: L
authors: Jiang
authors: Anna C
authors: AC
authors: Cummings
authors: Shengru
authors: S
authors: Guo
authors: Paul J
authors: PJ
authors: Gallins
authors: Ioanna
authors: I
authors: Konidari
authors: Laura
authors: L
authors: Caywood
authors: Lori
authors: L
authors: Reinhart-Mercer
authors: Denise
authors: D
authors: Fuzzell
authors: Claire
authors: C
authors: Knebusch
authors: Renee
authors: R
authors: Laux
authors: Charles E
authors: CE
authors: Jackson
authors: Margaret A
authors: MA
authors: Pericak-Vance
authors: Jonathan L
authors: JL
authors: Haines
authors: William K
authors: WK
authors: Scott
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000235:genetics*; D061365:Amish / Q000235:genetics*; D002874:Chromosome Mapping; D002896:Chromosomes, Human, Pair 6 / Q000235:genetics*; D003704:Dementia / Q000208:ethnology* / Q000235:genetics*; D005260:Female; D008040:Genetic Linkage / Q000235:genetics*; D055106:Genome-Wide Association Study; D006801:Humans; D015994:Incidence; D007196:Indiana / Q000453:epidemiology; D008126:Lod Score; D008297:Male; D008875:Middle Aged; D009820:Ohio / Q000453:epidemiology; D010375:Pedigree; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide; D011446:Prospective Studies