Canine Liver Copper Risk Testing With Targeted Polymorphisms
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Solution Overview
Problem
Current methods for determining the susceptibility of dogs to liver copper accumulation are limited by the genetic complexity of copper metabolism and lack effective genetic markers for predicting copper-associated liver diseases such as chronic hepatitis and cirrhosis.
Innovation Solution
Identification of specific polymorphisms in the dog genome, including SNPs and microsatellite repeats, which are associated with susceptibility or protection from liver copper accumulation, enabling a genetic test to predict the risk of liver copper-related diseases and inform breeding strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If genetic testing is performed to determine susceptibility to liver copper accumulation, then prediction accuracy for copper-associated liver diseases is improved, but the complexity of genetic analysis increases due to the complex nature of copper metabolism pathways
Solution Approach 1:
The patent segments the complex genetic analysis into distinct components by identifying and testing for specific polymorphisms in individual genes (ATP7A, ATP7B, UBLS, GOLGA5) rather than analyzing the entire copper metabolism pathway. This allows the complex problem to be divided into manageable genetic markers that can be tested separately and combined for overall susceptibility assessment.
Solution Approach 2:
The patent extracts specific polymorphic sites from the complex genetic background by identifying key nucleotide positions (such as c.1010C>T in ATP7A, c.1477G>A in ATP7B) that are most strongly associated with liver copper accumulation. This extraction approach isolates the critical genetic variants from the broader genomic context, simplifying the testing protocol while maintaining prediction accuracy.
2Reliability
If multiple polymorphisms are analyzed to improve prediction accuracy, then the reliability of susceptibility determination is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent develops a universal genetic testing panel that can simultaneously detect multiple polymorphisms across different genes (ATP7A, ATP7B, UBLS, GOLGA5) using a single standardized protocol. This multi-functional approach allows the same testing system to assess susceptibility by analyzing several genetic markers in one assay, improving reliability without proportionally increasing detection difficulty.
Solution Approach 2:
The patent changes the measurement parameters by focusing on specific nucleotide positions and polymorphism types (SNPs, microsatellite repeats) that are optimized for detection using standard molecular biology techniques. By selecting polymorphisms with detectable genetic variations at defined chromosomal locations, the patent makes multiple markers measurable using conventional PCR and sequencing methods rather than requiring complex analytical platforms.
3Productivity
If genetic markers are identified for breeding programs, then the productivity of producing healthy offspring is improved, but the loss of information about the full genetic basis of copper metabolism occurs
Solution Approach 1:
The patent uses affordable, targeted genetic testing for specific polymorphisms rather than comprehensive genomic sequencing, enabling widespread use in breeding programs. This approach sacrifices complete genetic information about copper metabolism to achieve cost-effective, practical screening that can be applied to large numbers of breeding animals, thereby improving breeding efficiency while accepting limited genetic insight.
Data Source
AI summary
The present disclosure provides methods of determining the susceptibility of a dog to liver copper accumulation, comprising detecting in a biological sample obtained from the dog the presence or absence in the genome of the dog of one or more polymorphisms, and methods of treating or breeding the dog based on such determination.