CREB3L4 and breast carcinoma: CREB3L4 and PRDM1 disproportionately affect the type I and II LacNAc pathway in luminal breast cancer: Our analysis suggests that CREB3L4 (enrichment p-value = 0.036) and PRDM1 (enrichment p-value = 0.039) may regulate the type 1 and 2 LacNAc pathways.