A rare NEIL1 variant reported in the Japanese population results in a truncated NEIL1 protein, NEIL1 Q282TER, which lacks the putative nuclear localization signal (NLS). NEIL1 Q282TER localizes to the cytosol and, due to this mislocalization, is not able to access damaged DNA substrates. Several NEIL truncation mutations that remove the NLS have been reported in different cancer types and correlate with increased mutational loads, but they have not been functionally studied. NEIL1 Q282TER has not yet been associated with any specific cancer type or cancer predisposition, but is the only functionally studied NEIL1 truncation mutant that lacks the NLS (Shinmura et al. 2015).