ATR and cancer: Apoptotic signaling in response to DNA damage, ATM signaling Pathway, Cell cycle, p53 signaling Pathway, Chaperones modulate interferon Signaling Pathway, Role of BRCA1, BRCA2 and ATR in Cancer Susceptibility, Telomeres, Telomerase, Cellular Aging, and Immortality, Tumor Suppressor Arf Inhibits Ribosomal Biogenesis,MAPK signaling Pathway