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Table 6 Comparison of the distribution of NAIP copy number in SMA patients and healthy individuals

From: Molecular characterization and copy number of SMN1, SMN2 and NAIP in Chinese patients with spinal muscular atrophy and unrelated healthy controls

Number of normalNAIP SMA patients (N = 42) Healthy individuals (N = 212) P
0 4 (9.5%) 0 (0%)  
1 26 (61.9%) 15 (7.1%) <0.001
2 12 (28.6%) 197 (92.9%)