In this study, 52.9 (18/34), 58.8 (20/34), 20.6 (7/34) and 58.8% (20/34) of the laryngeal carcinomas were positive for GLUT-1, P-gp, MRP1 and GST-π, respectively (Fig. 1). Here, ABCC1 is linked to laryngeal carcinoma.