XRCC6 (X Ray Repair Complementing Defective Repair in Chinese Hamster Cells 6, X-ray Repair Complementing Defective Repair in Chinese Hamster Cells 6, 70kD Subunit of Ku Antigen, ATP Dependent DNA Helicase 2 Subunit 1, ATP-dependent DNA Helicase II 70kD S[XRCC6]