[bnprks]

I think it is known that the Chinese state is making genetic databases of these minority populations and is taking genetic samples without consent. It's also known that the Chinese state is committing human rights violations against these minorities. I have not personally read reporting about specific ways the genetic samples have been used in fact, though.

In a US lab, for instance, I would expect that a similar genetic study would have hard-copy signed consent forms from every participant in the study with 3-6 year retention requirements, and this could be audited by their institution's IRB if there were concerns. (Ultimately I think there is an accountability chain all the way to the US federal government, though I'm not familiar with how the institutional IRBs are monitored). I don't know what equivalent institutions might exist in China, and whether the journals got/requested any verification of consents from them.

Though for papers like these where co-authors have affiliations with police departments or academies, I'm not sure how trustworthy it would be even if the police did claim they had evidence of consent for the data in these papers. (Given that Chinese police are known to be collecting genetic samples without consent in some documented cases.)