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Figure 3 | Breast Cancer Research

Figure 3

From: High-resolution genomic and expression analyses of copy number alterations in HER2-amplified breast cancer

Figure 3

Pattern of co-occurrence of recurrent amplifications in HER2+ and HER2- BC. (A) Fraction of co-amplification of recurrent amplifications in HER2+ BC excluding the 17q12 HER2 locus. For each amplification (vertical axis), the fraction of samples with a co-amplification (horizontal axis) is indicated in each box. Only co-amplifications occurring in ≥2 tumors with fractions ≥0.2 are displayed. For example, 20% of tumors with 17q24.2 amplification also have 1q21.2 amplification, while 40% of tumors with 1q21.2 amplifications also show amplification at 17q24.2 indicating that the number of 1q21.2 amplified tumors is lower than the number of tumors with 17q24.2 amplification. (B) The fraction of co-amplification of recurrent amplifications in A in HER2- breast tumors. Only co-amplifications occurring in ≥3 tumors with fractions ≥0.2 are displayed. Fractions are calculated similarly as in A.

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