[a_bonobo]

I've seen lots of good come out of GNNs in the biomedical space.

For example, in drug discovery you can treat any molecule and its biochemical properties as a graph so you can store the entire structure as a graph. So you make a million graphs of the biocompounds you know, a million graphs of random/similar compounds, and see which of the new million molecules the GNN will predict to work on disease X.

Long review here that might be closed access: https://academic.oup.com/bib/article/22/6/bbab159/6278145