Figure 1From: Evaluation of 7q31 region improves the accuracy of EGFR FISH assay in non small cell lung cancerEGFR/CEP7 co-amplification or Polisomy of chromosome 7?. In case of polysomy, the copy number of 7q31 region increases similarly to centromere signals. EGFR high copy number in the presence of an eusomic status of 7q31 region is indicative of gene amplification.Back to article page