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The rate, nature and transmission of mitochondrial DNA mutations in humans - EurekAlert
In a paper published today in Cell, scientists from deCODE genetics, a subsidiary of Amgen, present the largest study to date of germline mtDNA mutations in humans and their transmission across 116,663 mother-child pairs. The study documents the astonishing extent of hypermutability at some positions in mtDNA, including the well-known deleterious A>G mutation at position 3243 which causes the MELAS syndrome. The mutation occurred 15 times in the 2,548 matrilineal pedigrees, but typically disappeared after several generations, due to its severe impact on the health of carriers.
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