SLC2A1 and cancer: ATRA most effectively reduced the growth of cancer cell lines with high SLC2A1 expression [ATRA: r = -0.727, p = 0.041 (Pearson’s correlation) and 0.028 (Student’s t-test); fluorouracil: r = -0.427, p = 0.292 and 0.154; oxaliplatin: r = 0.353, p = 0.437 and 0.562] (Fig 4A and 4B).