MMP1 and oculopharyngeal muscular dystrophy: Additionally, ROC curve analyses showed good efficacy of salivary MMP-1 level in discriminating OSCC from non-cancerous groups (HC, OPMD, HC and OPMD) (Figure 1C,D), with AUCs of 0.871–0.898 and 0.865–0.885 based on pair-A ELISA and pair-B ELISA data, respectively.