This project reminds me of Matt Might's work (predating LLMs) on using techniques from Precision Medicine to help his son, who had a rare disease.

https://www.youtube.com/watch?v=Rt3XyeFHvt4 (poorly transcribed here: https://www.janestreet.com/tech-talks/algorithm-for-precisio...)

If I recall correctly, he used miniKanren along with formalized, structured data extracted from medical research. Unfortunately, his son has since passed away.