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. 2014 Feb 28;13(8):1299–1305. doi: 10.4161/cc.28201

Table 2. The gene amplification and deletion events in breast cancer patients.

            Young Group           Old Group  
Positive n Negative n Positive n Negative n
Rb1 deletion*           61           135           23           204           0.000
CHEK2 deletion*           91           105           44           183           0.000
CCND1 amplification*           46           150           52           175           0.891
c-Myc amplification*           56           140           30           197           0.000

*In all the gene mutation events, the following are excluded: 3 Rb1 amplification cases (1 old, 2 young), 1 CHEK2 amplification case (1 young), 2 CCND1 deletion case (1 old, 1 young), 2 c-Myc deletion cases (1 old, 1 young).