SCREENING OF MUTATIONS IN THE NPHS2 GENE IN GREEK PATIENTS WITH AUTOSOMAL-RECESSIVE STEROID-RESISTANT NEPHROTIC SYNDROME

PEDIATRICS ◽  
2008 ◽  
Vol 121 (Supplement 2) ◽  
pp. S117.1-S117
Author(s):  
Spyridon Megremis ◽  
Artemis Mitsioni ◽  
Andromachi Mitsioni ◽  
Constantinos Stefanidis ◽  
Sofia Kitsiou-Tzelli ◽  
...  
Author(s):  
ABDOUSS Fatima ◽  

Mutations in the NPHS2 gene encoding podocin are implicated in an autosomal-recessive form of nonsyndromic steroid-resistant nephrotic syndrome in both pediatric and adult patients. The p.R138Q (c.413G>A) mutation in exon 3 was the most prevalent mutation in European series. The p.R229Q (c.686G>A) variant in exon 5 is the first human variant discovered with a mutation-dependent pathogenicity. We aimed in this study to screen for the p.R138Q mutation and the p.R138Q variant in a Moroccan cohort with Steroid Resistant Nephrotic Syndrome.


2011 ◽  
Vol 51 (5) ◽  
pp. 272 ◽  
Author(s):  
Dedi Rachmadi ◽  
Danny Hilmanto ◽  
Ponpon Ijradinata ◽  
Abdurahman Sukadi

Background Steroid-resistant nephrotic syndrome (SRNS) often develops into end stage renal disease. Previous studies have reported that NPHS2 gene mutation, gender, and atopic history are risk factors associated with SRNS. Interethnic, sociocultural, and environmental differences have also been suggested to affect these mutations.Objective To analyze possible risk factors for SRNS, including NPHS2 gene mutations (412C→T and 419delG), gender and atopic history, in Indonesian subjects with SRNS.Methods A case-control study with 153 subjects, consisting of 88 SRNS patients and 65 control subjects, was undertaken in 10 Indonesian teaching centre hospitals from September 2006 to December 2007. Analysis of the NPHS2 gene mutation in 412 C→T was performed by amplification refractory mutation system-polymerase chain reaction (ARMS-PCR), while that for the NPHS2 gene mutation in 419delG was performed by restriction fragment length polymorphism (RFLP). Data was analyzed by multiple logistic regression.Results In our Indonesian subjects, the significant risk factors for SRNS were male gender (OR=2.21; CI 95%:1.07-4.56, P=0.036), NPHS2 412C→T gene mutation (OR=18.07; CI 95%:6.76-48.31, P<0.001), and NPHS2 419delG gene mutation (OR=4.55; CI 95%:1.66-12.47, P=0.003). However, atopic history was not a significant risk factor for SRNS (OR=1.807; CI 95%:0.642-5.086, P=0.262).Conclusion NPHS2 412C→T and 419delG gene mutations, as well as male gender are risk factors for SRNS in Indonesian subjects. Atopic history was not significantly associated with SRNS in our subjects. [Paediatr Indones. 2011;51:272-6].


2019 ◽  
Vol 46 (6) ◽  
pp. 6339-6344
Author(s):  
Sepideh Zununi Vahed ◽  
Hakimeh Moghaddas Sani ◽  
Mehdi Haghi ◽  
Mohammadali Mohajel Shoja ◽  
Mohammadreza Ardalan

2011 ◽  
Vol 80 (4) ◽  
pp. 389-396 ◽  
Author(s):  
Simone Sanna-Cherchi ◽  
Katelyn E. Burgess ◽  
Shannon N. Nees ◽  
Gianluca Caridi ◽  
Patricia L. Weng ◽  
...  

2019 ◽  
Vol 7 (19) ◽  
pp. 3145-3148
Author(s):  
Moushira Zaki ◽  
Shreen El-Shaer ◽  
Sahar Rady ◽  
Manal Abd El-Salam ◽  
Ragaa Abd-El-Salam ◽  
...  

BACKGROUND: Mutations in the NPHS2 genes are the main aetiology of early-onset and familial steroid-resistant nephrotic syndrome (SRNS). The pathogenic NPHS2 mutation together with the p.R229Q variant has been less described among Egyptian children. AIM: This study aims to determine the mutation of NPHS2 in children with NS and discover the role of p.R229Q variant in SRNS METHODS: The study included 53 children with NS, and 53 healthy volunteers matched in age and sex controls. The median age at disease onset was 7.3 years. Among NS cases, 31 cases had steroid-sensitive nephrotic syndrome (SSNS) and 22 children with steroid-resistant nephrotic syndrome (SRNS). Polymerase chain reaction amplification of the whole coding region of NPHS2 gene was carried out for its mutational analysis. Restriction digestion testing was carried out after PCR to determine the presence of R229Q polymorphism. Randomly selected samples were re-genotyped by two independent technicians for assessment of Quality control RESULTS: NS patients showed a significant higher frequency of heterozygous genotype GA (89.5%) compared to control group (10.5%) with increased risk of NS (OR, 12.04; 95% CI, 2.61 to55.38; p < 0.0001). Moreover, SRNS showed a significant higher frequency of GA genotype (68.2%) than the SSNS group (6.5%). The GA genotype was associated with increased risk of SRNS (OR, 31.1; 95% CI, 5.73 to 168.48; P < 0.001) and the A allele was associated with increased risk of SRNS (OR, 15.52; 95% CI, 3.325 to 72.422; P < .001). CONCLUSION: R229Q polymorphisms are associated with SRNS, and any child with SRNS should be searched for mutations in the NPHS2 gene.


2016 ◽  
Vol 426 (1-2) ◽  
pp. 177-181 ◽  
Author(s):  
Aravind Selvin Kumar Ramanathan ◽  
Murali Vijayan ◽  
Srilakshmi Rajagopal ◽  
Padmaraj Rajendiran ◽  
Prabha Senguttuvan

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Faravareh Khordadpoor Deilamani ◽  
Mohammad Taghi Akbari

Background: Steroid-resistant nephrotic syndrome is a genetic disease with autosomal recessive inheritance pattern and symptoms such as proteinuria and hypoalbuminemia and rapid progress of kidney disease. Preimplantation genetic diagnosis is an option for couples who are at risk of affected pregnancy to have a healthy child. Objectives: This study aimed to develop a new PGD test for a couple who are heterozygous for a mutation in NPHS2 gene and have a son affected to steroid-resistant nephrotic syndrome. Methods: Variant detection by cycle sequencing and Multiplex fluorescent PCR for identification of flanking STR markers were used to investigate the status of the embryos. Results: Three out of six embryos were transferable from which one was transferred and resulted in the birth of a healthy boy. Conclusions: We recommend increasing the number of the STR markers to two at the downstream of the NPHS2 gene especially in cases that direct mutation analysis such as cycle sequencing is not applied.


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