Rising political and security tensions between Beijing and the west have prompted calls for a review of the transfer of genetic data to China from a biomedical database containing the DNA of half a million UK citizens. The UK Biobank said it had about 300 projects under which researchers in China were accessing “detailed genetic information” or other health data on volunteers. The anonymised data is shared under an open-access policy for use in studies into diseases from cancer to depression. There is no suggestion it has been misused or…