Circulating antibodies specific for Ks, Ha, and cN1A have been described in inclusion body myositis (IBM), systemic sclerosis (Ssc), and Sjögren’s syndrome, whereas anti-Zo has been identified in anti-synthetase syndrome (ASS) with ILD [26,27,28,29,30,31,32,33,34,35,36]. Here, NT5C1A is linked to inclusion body myositis.