ATM and systemic sclerosis: As well as the more well-recognized autoantibodies that are included in the 2013 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria for SSc [3] (i.e., anti-centromere, anti-topoisomerase I (Scl-70 or ATA), and anti-RNA polymerase III), other autoantibodies have been associated with important SSc phenotypes (Table 1) [1].