گزارش یک مورد بیماری کلیه پلیکیستیک اتوزوم مغلوب ناشی از دو جهش بهصورت هتروزیگوت مرکب در ژن PKHD1: گزارش موردی
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Abstract:
Background: Autosomal recessive polycystic kidney disorder (ARPCKD) is one of the most prevalent hereditary disorders in neonates and children. Its frequency is between 1/6000 to 1/55000 births. In the most severe cases, it can be diagnosed prenatally by the presence of enlarged, echogenic kidneys and oligohydramnios. However, in the milder forms, clinical manifestations are usually detected in neonatal and childhood period. PKHD1 gene located on chromosome 6 is linked with this disorder. About half of detected mutations in this gene are missense ones. The largest protein product of this gene is called the FPC/polyductin complex (FPC). It is a single-membrane spanning protein whose absence leads to abnormal ciliogenesis in the kidneys. Case presentation: Here we present a 5-year-old female patient affected with ARPCKD. She has been born to a non-consanguineous healthy Iranian parents. No similar disorder has been seen in the family. Prenatal history has been normal. In order to find the genetic background, DNA was extracted from patient's peripheral blood lymphocytes. PKHD1 gene exons and exon-intron boundaries were sequenced using next generation sequencing platform. Two novel variants have been detected in compound heterozygote state in the patient (c.6591C>A, c.8222C>A). Bioinformatics tools predicted these variants to be pathogenic. Conclusion: In the present study, we detected two novel variants in PKHD1 gene in a patient with ARPCKD. The relatively mild phenotype of this patient is in accordance with the missense mutations found. Molecular genetic tools can help in accurate risk assessment as well as precise genotype-phenotype correlation establishment in families affected with such disorder to decrease the birth of affected individuals through preimplantation genetic diagnosis or better management of disorder.
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گزارش یک مورد بیماری کلیه پلی کیستیک اتوزوم مغلوب ناشی از دو جهش به صورت هتروزیگوت مرکب در ژن pkhd۱: گزارش موردی
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Journal title
volume 74 issue None
pages 746- 749
publication date 2017-01
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