PCBP1 and neoplasm: Our findings in the current study cumulatively indicate that the RNA binding protein, poly r(C) binding protein 1 (PCBP1) or heterogeneous nuclear ribonucleoprotein E1 (hnRNPE1) expression correlates withmiR-3978 expression and that hnRNP E1 itself functions as a suppressor of tumor progression.