Well... My experience (having worked as an SWE) w/ medical technology is that if a company is selling something, they will choose the version of advice or analysis that most aligns with selling something. (I got ordered to adjust scoring thresholds in a statistical grouping to have "nicer" groups, for example.)

If your company does treatment X that competes with treatment Y, they'll look to expenand the edge cases that suggest X over Y as much as possible. If a company wants people to feel like they're getting something out of a genetic profile, they'll report the broadest version of risk, and then slow roll more detailed analysis.

Things like this are why I strongly think certain profit motives and business models should be extremely restricted. Just like private prisons create a profit motive for creating crimes, medical services have a profit motive for spreading inaccurate and twisted medical advice, whether it's things like alternative or new age medicine, treatment modality choices, or DNA information.