Figure 2.
Results of genetic diagnosis for NPHP-RC. One-third (n=19; 34.5%) of the patients with clinical diagnoses of NPHP-RC obtained a genetic diagnosis by two-step genetic diagnosis using Sanger sequencing (n=12, 21.8%) and targeted exome sequencing (n=7; 12.7%). Four patients with homozygous total deletion of NPHP1, three with IQCB1/NPHP5, one with CEP290/NPHP6, and four with TMEM67/MKS3/NPHP11 were detected using Sanger sequencing. Mutations of other genes were detected using targeted exome sequencing. In addition, heterozygous mutations in NPHP-RC genes were detected in 13 patients (23.6%). NPHP-RC, nephronophthisis-related ciliopathy.