“South San Francisco, Calif.-based Moonwalk, which was founded in 2022 and operated quietly until recently, seeks to harness a form of epigenetic control that involves adding chemical tags, known as methyl groups, to DNA. Adding a methylation tag suppresses a gene, while removing one can allow it to be activated.

Bing Ren, director of the Center for Epigenomics at the University of California, San Diego, said he is optimistic the approach could be a breakthrough, partly because it could open new angles of attack on diseases.”

From Wall Street Journal.