ERCC4 and breast cancer: The ERCC4 gene is involved in the nucleotide excision repair (NER) pathway, which has led to the investigation of its role in the susceptibility to develop different types of cancer including breast cancer (Garcia-Closas et al, 2006; Mechanic et al, 2006; Moreno et al, 2006; Kiyohara and Yoshimasu, 2007; Hooker et al, 2008; Smith et al, 2008).