XPA and head and neck squamous cell carcinoma: A polymorphism in the 3′ UTR of ERCC1 (not the exon 4 RFLP studied here) has been associated with glioma (Chen et al, 2000) and SCCHN (Sturgis et al, 2002) and two XPA polymorphisms are associated with lung cancer (Park et al, 2002).