Floating Within

The Chinese University of Hong Kong's Dennis Lo is working on adapting cell-free DNA approaches to spot cancer, Technology Review's Antonio Regalado writes.

Lo developed non-invasive prenatal diagnostic testing for Down syndrome based on isolating fetal DNA circulating in a pregnant woman's blood, and he says it's similarly possible to uncover tumor DNA in a patient's blood.

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CNN reports that researchers have tied a new variant to opioid addiction risk.

Organoids derived from patients' tumors may help determine what chemotherapy treatment patients would benefit from, according to New Scientist.

An initiative from GenomeAsia 100K hopes to increase the number of South Asians in genetic research, according to NBC News.

In Science this week: genomic analysis of ancient and modern horses indicates population turnover, and more.