We observed upregulation of TAGLN3 (UniProtKB/Swiss-Prot: Q9UI15), one of the three isoforms of the TAGLN family (together with TAGLN1 and TAGLN2; for a discussion of TAGLN2’s role in other types of breast cancer, namely ER-negative; see [79]). This evidence concerns the gene TAGLN3 and breast carcinoma.