The relatively higher expressions of MDR1 (HR: 1.4 [1.17–1.68], log-rank P = 0.0017) and MRP1 (HR: 1.35 [1.14–1.6], log-rank P = 5e–04) were associated with an unfavorable prognostic outcome in GC patients (Fig. 6C). The gene discussed is ABCC1; the disease is gastric cancer.