PARP1 and cancer: Considering the multiple functions of PARP1 including cell proliferation and DNA repair, it was not surprising to find high expression associated with shorter MFS, as already reported in other cancers (Goncalves et al., 2011; Li et al., 2016; Mahe et al., 2015; Michels et al., 2015; Murnyak et al., 2017).