ATG5 and synovial sarcoma: Tear ATG5 at a cutoff of >4.0 ng/mL/μg had a positive likelihood ratio (LR) of 14.7 with a 94.6% sensitivity and 93.6% specificity for SS in patients with aqueous deficient-type DE, which was greater than the values of the Schirmer I test, TBUT, and the OSS score.