MYC and cancer: Several studies have shown that LIN28 proteins are overexpressed in different types of cancers (colorectal, breast, and ovarian), where the function of let‐7 as tumour suppressor against RAS or MYC is lost (Balzeau et al., 2017; Enriquez et al., 2015; Guo et al., 2006; Viswanathan et al., 2009; Wang et al., 2016).