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Which are the causes of Congenital Nephrotic Syndrome Finnish Type?

See some of the causes of Congenital Nephrotic Syndrome Finnish Type according to people who have experience in Congenital Nephrotic Syndrome Finnish Type

Congenital Nephrotic Syndrome Finnish Type causes

Congenital Nephrotic Syndrome Finnish Type (CNSF) is a rare genetic disorder that affects the kidneys, leading to excessive protein loss in the urine. It is primarily found in individuals of Finnish descent, hence the name. This condition is caused by mutations in the NPHS1 gene, which is responsible for producing a protein called nephrin. Nephrin plays a crucial role in maintaining the integrity of the glomerular filtration barrier in the kidneys.



Genetic Mutations: The main cause of CNSF is the presence of mutations in the NPHS1 gene. These mutations can be inherited from parents who are carriers of the defective gene or can occur spontaneously during the development of the embryo. The NPHS1 gene mutations disrupt the production or function of nephrin, leading to the development of CNSF.



Autosomal Recessive Inheritance: CNSF follows an autosomal recessive pattern of inheritance, which means that both parents must carry a copy of the mutated gene for their child to be affected. If both parents are carriers, there is a 25% chance with each pregnancy that their child will inherit two copies of the mutated gene and develop CNSF.



Prevalence in the Finnish Population: CNSF is particularly prevalent in individuals of Finnish descent, with an estimated incidence of 1 in 8,000 live births in Finland. This higher prevalence is attributed to a founder effect, where a specific population has a higher frequency of a particular genetic mutation due to a small ancestral population.



Impact on Nephrin Function: The absence or dysfunction of nephrin in individuals with CNSF disrupts the normal filtration process in the kidneys. This leads to increased permeability of the glomerular filtration barrier, allowing large amounts of protein to be lost in the urine. The loss of protein, particularly albumin, results in a condition called nephrotic syndrome, characterized by edema (swelling), hypoalbuminemia (low levels of albumin in the blood), and hyperlipidemia (elevated blood lipid levels).



Other Contributing Factors: While the primary cause of CNSF is the genetic mutation in the NPHS1 gene, other factors may influence the severity and progression of the disease. These factors include environmental influences, epigenetic modifications, and potential interactions with other genes. However, further research is needed to fully understand the impact of these factors on the development of CNSF.



In conclusion, Congenital Nephrotic Syndrome Finnish Type is primarily caused by mutations in the NPHS1 gene, leading to the absence or dysfunction of nephrin. This genetic disorder follows an autosomal recessive pattern of inheritance and is more prevalent in individuals of Finnish descent. The loss of protein in the urine due to impaired kidney filtration results in the characteristic symptoms of nephrotic syndrome. While other factors may contribute to the disease's progression, the genetic mutation remains the primary cause of CNSF.


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