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This Week in PNAS

A consortium of scientists from Yale and EMBL, among others, used high-resolution analysis to study the genetics of Down syndrome in a paper published in the early online edition of PNAS this week. The scientists created a genetic map for 30 patients with rare segmental trisomies of various regions of HSA21 and found regions of 1.8 Mb -16.3 Mb likely to be involved in the development of eight of the cases, confirming the role of a single consensus region in causing severe Down syndrome.

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Bloomberg reports that the DNA-for-cash deal reported in Kentucky might be a more widespread scam.

St. Jude Children's Research Hospital scientists have treated infants with X-linked severe combined immunodeficiency using gene therapy in an early phase study.

St. Louis Public Radio reports that some African Americans are turning to DNA ancestry testing to help guide genealogical searches.

In Nature this week: a genomic analysis of the snailfish Pseudoliparis swirei, ancient DNA analysis gives insight into the introduction of farming to England, and more.