"Involved" in the sense that he took the public data, added in a small amount of his own privately generated data and was trying to get the first assembly. The scientists in the Human Genome Project thought he was going to try to patent the whole thing so others would have to pay him. Back then, it was not clear what was and was not patentable.

So the involvement was in spurring the Human Genome Project to race to an assembly, a massive computational problem that hadn't been fully planned for by the public effort:

https://archive.is/2022.02.14-091753/https://www.nytimes.com...

i believe he also was the human genome project, he arranged to have one of the samples be him