In vitro micronucleus studies are not valid indicators of safety. Some of the largest contract research organizations now no longer recommend we do the study at all during develoment because it is so problematic. Instead we go straight to the more accurate studies that would be needed to clear a bad in vitro MN study. Literally a third of all approved drugs have failed this test, but been shown to be clean in better studies.

The biggest news here is the author is too lazy to do proper studies before reporting results.