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Published on: August 8, 2022
[Clinical and genetic basis of hypertensive nephrosclerosis. NEFROSEN Study]
1Sección de Nefrología, Hospital Valle del Nalón, Langreo, Asturias. beaojea@hotmail.com
Insights
This study investigates the MYH9 gene
Area of Science:
- Nephrology
- Genetics
- Hypertension Research
Background:
- Hypertensive nephrosclerosis, a chronic kidney disease (CKD), is linked to essential hypertension.
- The MYH9 gene is implicated in CKD in African Americans, prompting investigation in Caucasians.
- Understanding genetic links is crucial as hypertension control doesn't always correlate with CKD progression.
Purpose of the Study:
- To determine if MYH9 gene polymorphism is associated with essential hypertension and nephrosclerosis in Caucasians.
- To identify clinical risk factors contributing to the progression of CKD.
- To explore both clinical and genetic factors influencing end-stage CKD development.
Main Methods:
- Retrospective study comparing CKD patients with essential hypertensives and healthy controls.
- Recruitment of 500 CKD patients (stages 3-5), 300 essential hypertensives, and 200 healthy controls.
- Collection of clinical, laboratory, and blood sample data for genetic analysis.
Main Results:
- This section is to be filled after study completion.
Conclusions:
- The study aims to establish a link between MYH9 gene and nephrosclerosis in Caucasians.
- It seeks to identify key clinical and genetic risk factors for CKD progression.
- Findings will contribute to understanding the genetic basis of hypertensive nephrosclerosis.
Background:
Hypertensive nephrosclerosis is a chronic kidney disease (CKD) associated with essential hypertension. The lack of correlation between hypertension control and progression to end-stage CKD suggests an intrinsic and primitive disease. New evidence suggests that MYH9 gene alterations are associated with polymorphisms in African Americans. The aim of this study is to investigate whether a polymorphism of MYH9 in Caucasians is linked to essential hypertension and nephrosclerosis. The secondary objective is to identify the clinical risk factors of progression to end-stage CKD. This is a retrospective study that will compare patients with nephrosclerosis and essential hypertensives without renal disease, and also patients with nephrosclerosis and impaired renal function with those that are stable.
Method:
Between October 2009 and October 2010, 500 patients with stages 3-5 CKD attributed to nephrosclerosis according to usual clinical criteria, and 300 essential hypertensives (eGFR>60 mL/min/1.73 m2; microalbuminuria <300 mg/g) are to be recruited. A total of 200 healthy controls from the general population are also to be included for the genetic study. There are two study sections, being the first and final visits to the clinic (for stage 5 cases, the start of replacement therapy will be the end of follow-up). Clinical and laboratory data will be recorded, and blood samples will be collected.
Discussion:
Our study will aim to determine if there is a relationship between the diagnosis of nephrosclerosis and the MYH9 gene in Caucasians, and to study possible risk factors for progression to end-stage CKD, on both clinical and genetic bases.
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