By studying centenarians, their children, and controls, researchers led by Yousin Suh have found a potential role for insulin growth factor one in human longevity. The scientists screened IGF1 and the IGF1 receptor genes in their study population and found a gender-specific effect. Female centenarians, as they report in PNAS, are more likely to have a heterozygous mutation in the IGF1 receptor gene that results in an altered IGF signaling pathway.

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The UK's Nuffield Council on Bioethics says genetically modifying human embryos could be morally permissible, according to the Guardian.

A new Nature Biotechnology paper reports that CRISPR-Cas9 gene editing can lead to large deletions or complex rearrangements that could be pathogenic.

The Wall Street Journal likens a prototype developed by Synthetic Genomics to a "biological fax machine."

In PNAS this week: strategy for reactivating Rett syndrome-linked MECP2, small molecules able to suppress Staphylococcus aureus virulence, and more.