RAD23B is a homolog of yeast ultraviolet excision repair protein RAD23 [34], wherein RAD23B and XPC (xeroderma pigmentosum complementation group C) form an XPC-RAD23B complex, which plays a key role in the recognition of DNA damage in genomic nucleotide excision repair (NER) by identifying and interacting with unpaired bases in the DNA strand [35, 36]. This evidence concerns the gene XPC and Xeroderma pigmentosum complementation group C.