ATM and breast cancer: Although MRN gene T + SJV were not by themselves a significant breast cancer risk factor, we note that our OR point estimate of 2.61 is both very close to the meta-analysis point estimate of 2.63 that Zhang et al. obtained for NBN c.657del5 [13], and close to the point estimate of 2.32 that we obtained in our meta-analysis of ATM T + SJV [19].