HLA-A and Anxiety: While no documented links were found between HLA-A and anxiety, links with aging revealed a robust positive relationship between HLA-A and aging (five mined sentences), where increased MHC1 expression in motoneurons is associated with aging (Edstrom et al., 2004) and increased MHC1 expression with the denervation of aging muscle (Tetruashvily et al., 2016).