To analyze the roles of AGR2 in HCC progression, we established AGR2-silenced Hep3B, HepG2 and Huh7 cells (lane 2 vs 1; Fig. 3A(a), B(a), C(a); Additional file 2: Figure S2), and cell viability was determined using MTT assay. Here, AGR2 is linked to hepatocellular carcinoma.