We identified the <i>BRCA1</i> pseudogene (<i>BRCA1P1</i>), a fusion pseudogene derived from the <i>BRCA1</i> tumor suppressor and <i>RPLP1</i> ribosomal protein genes, as an immunoregulatory RNA in breast cancer. The gene discussed is RPLP1; the disease is breast carcinoma.