A brief summary. Open access:
A genome-wide association study with 1,126,563 individuals identifies new risk loci for Alzheimer’s disease
Nature Genetics | VOL 53 | SEPTEMBER 2021 | 1276–1282 |
This research appears to be focused on those of northwest European ancestry. (Because that's where the data is.) As I understand their paper, these results appear to be more of a building block to construct a better model for risk assessment and potential genetic targets for medication than a basis for action.