Researchers looked at the genome of some of the oldest living people. While they did not find a significant association with extreme longevity, the researchers published their genome findings. At least the data will be available as a resource for future researchers looking at the “genetic basis” of longevity.
There are 74 supercentenarians (110 years or older) alive worldwide, with 22 living in the United States. The authors of this study performed whole genome sequencing on 17 of them to explore the genetic basis underlying extreme human longevity.
“We were looking for a really simple explanation in a single gene,” said Stuart K. Kim, a Stanford geneticist and molecular biologist. “And we know now that it’s a lot more complicated, and it will take a lot more experiments and a lot more data from the genes of more supercentenarians to find out just what might account for their ages.”
From the limited sample size the researchers were not able to find protein-altering variants associated with extreme longevity, according to a study in PLOS ONE by Hinco Gierman from Stanford University and colleagues published November 12, 2014 . But they did find one supercentarian had a genetic variant related to a heart condition that had very little effect on his health considering he reached such and elderly age. The researchers noted that it is recommended by the American College of Medical Genetics and Genomics to report this instance as an incidental finding.
The whole genome sequences of all 17 supercentenarians are now available as a public resource so that they can be used to assist the discovery of the genetic basis of extreme longevity in future studies.
Compare to Large genome sequencing studies in the USA (posted August 26, 2014 )