Table 1.

Summary of available criteria for anti-synthetase syndrome. ILD: interstitial lung disease; ATS: American thoracic society

Connors (2)	Lega (7)	Solomon (6)
Anti-aminoacyl-tRNA synthetase autoantibody positivity plus one among:  • Myositis (Bohan and Peter’s criteria)  • ILD by ATS criteria  • Arthritis (clinic, X-rays, self-report)  • Unexplained fever  • Raynaud’s phenomenon  • Mechanic’s hands	Anti-aminoacyl-tRNA synthetase autoantibody positivity plus one among:  • Myositis (overt or hypomyopathic)  • ILD by ATS criteria  • Arthritis or arthralgia Or two among:  • Unexplained fever  • Raynaud’s phenomenon  • Mechanic’s hands	Anti-aminoacyl-tRNA synthetase autoantibody positivity plus (2 major criteria or 1 major plus 2 minor criteria) Major criteria:  • Myositis (Bohan and Peter’s criteria)  • ILD by ATS criteria Minor criteria:  • Arthritis  • Raynaud’s phenomenon  • Mechanic’s hands