RAS is regulated by the let-7 microRNA family.
Johnson, Steven M, Helge Grosshans, Jaclyn Shingara, Mike Byrom, Rich Jarvis, Angie Cheng, Emmanuel Labourier, Kristy L Reinert, David Brown, and Frank J Slack. 2005. “RAS Is Regulated by the Let-7 MicroRNA Family.”. Cell 120 (5): 635-47.