SNP Panel for Salt Sensitivity Diagnosis
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Solution Overview
Problem
Current methods lack effective means to identify, diagnose, and treat individuals with salt sensitivity of blood pressure, which is associated with increased cardiovascular events and mortality, and is influenced by genetic and environmental factors, particularly the response to dietary sodium intake.
Innovation Solution
The use of single nucleotide polymorphisms (SNPs) in genes such as SLC4A5 and GRK4, along with other genetic markers, to identify and diagnose salt sensitivity, providing a panel of genes and SNPs for determining blood pressure sensitivity to sodium intake, enabling personalized treatment strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If genetic markers (SNPs) are used to identify salt sensitivity, then diagnostic accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The diagnostic approach is segmented into multiple independent SNP markers (SLC4A5, GRK4, DRD2, etc.) that can be tested separately or in combination. This allows the complex diagnostic process to be broken down into manageable components, where each SNP test can be performed independently using standardized methods, thereby reducing overall test complexity while maintaining high diagnostic accuracy through the cumulative information from multiple markers.
Solution Approach 2:
The patent develops a universal genetic testing platform that can detect multiple SNP markers associated with salt sensitivity using a single methodology framework. This multi-functional approach allows the same diagnostic system to evaluate several genetic markers (SLC4A5, GRK4, DRD2, CYP11B2, etc.) simultaneously, reducing the need for multiple separate tests and simplifying the overall diagnostic process while maintaining comprehensive accuracy.
2Reliability
If multiple genetic markers are analyzed, then identification reliability is improved, but loss of time in testing increases
Solution Approach 1:
Multiple SNP marker analyses are merged into a single integrated genetic testing protocol. Instead of performing separate tests for each marker (SLC4A5, GRK4, DRD2, etc.), the patent combines them into one comprehensive assay that can be completed in a single testing session. This merging approach maintains the high identification reliability that comes from analyzing multiple markers while eliminating the cumulative time loss that would result from sequential testing.
Solution Approach 2:
The patent establishes predetermined thresholds and interpretation criteria for SNP marker combinations before clinical implementation. By pre-establishing the diagnostic algorithms and decision rules for interpreting multiple marker results, the system eliminates the need for time-consuming post-test analysis and consultation, allowing rapid interpretation of multi-marker results while maintaining high identification reliability.
3Reliability
If personalized treatment strategies are implemented based on genetic profiles, then treatment effectiveness is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies local quality by tailoring treatment recommendations to each individual's specific genetic profile. Instead of a one-size-fits-all approach, the system identifies which specific SNP markers are present in each patient (e.g., SLC4A5 variants, GRK4 variants, DRD2 variants) and provides customized dietary and pharmacological recommendations targeted to that individual's genetic characteristics. This localized approach improves treatment effectiveness while keeping the underlying system relatively simple by using standardized genetic testing followed by protocol-based interpretation.
Data Source
AI summary
It was determined whether SNPs in SLC4A5 are associated with salt sensitivity of blood pressure (BP). Subjects consumed an isocaloric constant diet with a randomized order of 7 days low Na+ (10 mmol/d) and 7 days high Na+ (300 mmol/d) intake. Salt sensitivity was defined as a ≧7 mm Hg increase in mean arterial pressure (MAP). 35 polymorphisms in 17 candidate genes were assayed. Association analyses with salt sensitivity revealed three variants that associated with salt sensitivity, two in SLC4A5 (rs7571842, rs10177833; P<0.001), and one in GRK4 (rs1801058; P=0.020). Paradoxical changes in blood pressure in response to changes in salt intake were also found associated with a SNP for DRD2 (rs6276). In conclusion, SLC4A5 variants are strongly associated with salt sensitivity of BP in Caucasian and a DRD2 SNP is a marker for paradoxical response to salt intake.