Transcription factor which may be involved in the control of cell cycle progression by the RB1/E2F1 pathway and in B-cell differentiation. {ECO:0000269|PubMed:11812999, ECO:0000269|PubMed:12692263}. This is the function of Ensembl gene identifier ENSG00000116017 (ARID3A, AT-rich interaction domain 3A).