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Table 2 Type, number, size and inheritance of the CNVs found according to the clinical interpretation

From: Predictive diagnostic value for the clinical features accompanying intellectual disability in children with pathogenic copy number variations: a multivariate analysis

Variable Patients with pathogenic CNVs Patients with benign CNVs Patients with unknown CNVs
  N = 27 N = 12 N = 2
Type    
Deletion 21 (77.8%) 2 (16.7%)  
Duplication 3 (11.1%) 9 (75.0%) 2 (100%)
Duplication and deletion 3 (11.1%) 1 (8.3%)  
No. CNVs    
1 22 8 2
≥2 5 4  
Size    
≤0.5 Mb   6 (50%) 2 (100%)
>0.5 Mb 27 (100%) 6 (50%)  
Inheritance    
De novo 21 (77.8%) 1 (8.3%)  
Familial 5 (18.5%) 7 (58.3%) 2 (100%)
Unknown 1 (3.7%) 4 (33.3)