ANCESTOR

Every five minutes, a transplant candidate dies while waiting for a compatible heart, liver, or kidney. Imagine a technology that could provide those life-saving transplant organs for a high price, and imagine what a company would do to monopolize that technology. On a remote island in Lake Superior, a team of geneticists has unlocked this holy grail of medicine. By reverse-engineering thousands of genomes, they dial back the evolutionary clock to re-create the progenitor of all mammals. The method? Illegal. The result? An AI-designed animal whose organs can be safely transplanted into any person. There's just one problem: these "ancestors" are not the docile herd animals the scientists envisioned. Instead, the project spawns something big, something evil … something very, very hungry. As creators become prey in an ultimate battle for survival, the research team must fight for their lives — even while government agents close in to shut the project down, and the deep-pocketed company backing this research reveals its own cold-blooded agenda...

https://scottsigler.com/book/ancestor/