PTPA and gastric cancer: With the help of univariate cox regression analysis, we found that six lncRNAs, lnc-SLC26A11, lnc-CHAF1B-3, lnc-CHAF1B-2, LINC00106, MIR3142HG and lnc-PTPA-3 had significant correlation with prognosis in gastric cancer (Figure 1B).