The University of Montreal's Philip Awadalla, with Canadian and American collaborators, describes ties between rare alleles in the meiotic recombination-related gene PRDM9 and childhood leukemia in an early, online Genome Research study. The team picked up rare, maternally inherited PRDM9 variants when they tested two French Canadian siblings with B-cell precursor acute lymphoblastic leukemia and their unaffected parents.

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US Attorney General Jeff Sessions is considering using DNA tests to determine relatedness between adult and child migrants, the Daily Caller reports.

Bloomberg reports that Brainstorm Cell Therapeutics plans to offer a treatment it is developing under the "right to try" law for hundreds of thousands of dollars.

In Nature this week: expansion of disease-resistance genes among long-lived oak trees, and more.

In a proof-of-concept study, researchers report being able to determine age from dried bloodstains, Discover's D-brief blog reports.