A serious new hurdle for CRISPR: Edited cells might cause cancer, find two studies https://www.statnews.com/2018/06/11/crispr-hurdle-edited-cells-might-cause-cancer/ In the studies, published in Nature Medicine, scientists found that cells whose genomes are successfully edited by CRISPR-Cas9 have the potential to seed tumors inside a patient. That could make some CRISPR’d cells ticking time bombs, according to researchers from Sweden’s Karolinska Institute and, separately, Novartis.