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Clinical and pathological features and varied mutational spectra of pathogenic genes in 55 Chinese patients with nephronophthisis.
Clinica Chimica Acta ( IF 3.2 ) Pub Date : 2020-03-12 , DOI: 10.1016/j.cca.2020.03.015 Zhihui Yue 1 , Hongrong Lin 1 , Min Li 2 , Haiyan Wang 3 , Ting Liu 4 , Miaoyue Hu 1 , Huamu Chen 2 , Huajuan Tong 5 , Liangzhong Sun 2
Clinica Chimica Acta ( IF 3.2 ) Pub Date : 2020-03-12 , DOI: 10.1016/j.cca.2020.03.015 Zhihui Yue 1 , Hongrong Lin 1 , Min Li 2 , Haiyan Wang 3 , Ting Liu 4 , Miaoyue Hu 1 , Huamu Chen 2 , Huajuan Tong 5 , Liangzhong Sun 2
Affiliation
BACKGROUND
Nephronophthisis (NPHP) is the most common genetic cause of end-stage renal disease (ESRD) in children. This study was performed to explore the pathogenic gene mutations and clinical and pathological features of Chinese patients with NPHP.
METHODS
Patients for whom causative mutations were not identified in our previous study, as well as those recruited later, were subjected to whole-exome next-generation sequencing (NGS) or the exome of 63 primary cilia disease genes.
RESULTS
We recruited 55 patients (27 boys and 28 girls) from 48 families, mainly from South China. We subjected 35 patients to NGS. Disease-causing mutations were revealed in seven more families (nine patients) by NGS. In total, disease-causing mutations were identified in 25 patients from 19 families, accounting for 39.6% (19/48) of all families, and novel mutation rate was 77.8% (35/45). NPHP1 and NPHP3 mutations were identified in 14.6% (7/48) and 12.5% (6/48) of all families, respectively. The patient with CEP83 mutations presented with prominent glomerular cysts and glomeruli dysplasia without extrarenal involvement.
CONCLUSION
A high novel mutation rate was identified, and disease-causing mutations of NPHP3 prevailed in this group of Chinese NPHP patients. This is the second report of a patient with CEP83 mutations.
更新日期：2020-03-12
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