" Then, too, while gene editing is capable of repairing DNA in cultured human cells, it will be years before its efficacy is (or is not) demonstrated in human patients, and the few clinical successes that have been achieved so far with cancer immunotherapy and HIV might or might not be accurate predictors of other successes to come. "

― Jennifer A. Doudna , A Crack in Creation: Gene Editing and the Unthinkable Power to Control Evolution