KLK12 and breast carcinoma: Previously, Papachristopoulou et al. [3] reported that mRNA expression of KLK12 splice variants (KLK12sv1/2 and KLK12sv3) were good prognosis markers in breast carcinomas, which agrees with our present results because the KLK12 antibody and KLK12 specific siRNA used in this study recognizes these variants.