MIF and rheumatoid arthritis: High expression MIF alleles have been associated with several autoimmune diseases, including RA (Bae & Lee, 2018; De la Cruz‐Mosso et al., 2014; Donn et al., 2002, 2001; Martínez et al., 2007; Morales‐Zambrano et al., 2014; Sreih et al., 2011, 2018).