CCDC170 and breast carcinoma: Certain of the bust-size associated variants near the 3′- end of CCDC170 identified in this and previous reports (Table 2)15,16 have also been associated with spinal bone mineral density (rs6929137)51 and breast cancer in Chinese (rs2046210)41, and it was recently proposed that these variants reflect regulatory elements relevant to ESR1 expression52.