In luminal B BC, the regulation of lncRNA OAZ1/miRNA hsa-miR-7851-3p/multiple mRNAs (ALG12 and HOXA5) and multiple lncRNAs (COTL1, HMG20B, and SORBS3)/miRNA hsa-miR-10396b-5p/multiple mRNAs (PAK6, CEP41, RASA4) was found. The gene discussed is OAZ1; the disease is breast cancer.