SPRY4 and breast cancer: The current study was designed to evaluate a panel of long non-coding RNAs (lncRNAs) BC040587, HOTAIR, MALAT1, CCAT1, CCAT2, PVT1, UCA1, SPRY4-IT1, PANDAR, and AK058003—and two mRNAs (SNCG, BDNF) as novel prognostic biomarkers for BC.