NEW YORK (GenomeWeb News) â€" In a pair of papers appearing online today in the Lancet and Lancet Oncology, members of the Breast Cancer Intergroup of North America reported that some post-menopausal, estrogen receptor positive breast cancer patients benefit from the addition of chemotherapy to standard tamoxifen treatment.

And, the researchers found, the addition of chemotherapy was most beneficial for individuals scoring high on Genomic Health's Oncotype DX test, suggesting the recurrence assay may be helpful for guiding such treatment.

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Decode Genetics' ability to tell Icelanders, even ones the company hasn't sequenced, about their disease risk brings up ethical questions.

Genetic analysis of Britain's King Richard III and modern descendants of his relatives indicate breaks in the male line.

In Nature this week: Icelandic genome sequences, approach to increase CRISPR efficiency, and more.

Testing showing "genetic incompatibilities" have led thousands of couples in Saudi Arabia to call off their weddings, the BBC reports.