Our independent analysis of primary ER+PIK3CA-mutant breast cancers, which exhibit high INPP4B expression, identified these and additional upregulated Wnt genes (LEF1, MYCN, FZD7, SFRP2, TCF7L1, CTNNB1, FZD4, and SFRP1). Here, FZD7 is linked to breast carcinoma.