Separating gene clustering in the rare mucopolysaccharidosis disease
Leon Bobrowski1,2, Tomasz Łukaszuk1, Lidia Gaffke3
1Faculty of Computer Science, Białystok University of Technology, Białystok, Poland.
Abstract:
Rare disease datasets are typically structured such that a small number of patients (cases) are represented by multidimensional feature vectors. In this report, we considered a rare disease, mucopolysaccharidosis (MPS). This disease is divided into 11 types and subtypes, depending on the genetic defect, type of deficient enzyme, and nature of accumulated glycosaminoglycan(s). Among them, 7 types are known as possibly neuronopathic and 4 are non-neuronopathic, and in the case of the former group, prediction of the course of the disease is crucial for patient's treatment and the management. Here, we have used transcriptomic data available for one patient from each MPS type/subtype. The approach to gene grouping considered by us was based on the minimization of the perceptron criterion in the form of convex and piecewise linear function (CPL). This approach allows designing complexes of linear classifiers on the basis of small samples of multivariate vectors. As a result, distinguishing neuronopathic and non-neuronopathic forms of MPS was possible on the basis of bioinformatic analysis of gene expression patterns where each MPS type was represented by only one patient. This approach can be potentially used also for assessing other features of patients suffering from rare diseases, for which large body of data (like transcriptomic data) is available from only one or a few representatives.
Insights
Researchers distinguished neuronopathic and non-neuronopathic mucopolysaccharidosis (MPS) forms using gene expression data from single patients. This bioinformatic approach aids rare disease classification with limited data.
Area of Science:
- Bioinformatics
- Genomics
- Rare Diseases
Background:
- Rare disease datasets often have limited patient numbers, posing challenges for analysis.
- Mucopolysaccharidosis (MPS) is a rare genetic disorder with 11 types, some potentially affecting the nervous system.
- Predicting the course of neuronopathic MPS is vital for effective patient management.
Purpose of the Study:
- To develop a method for classifying MPS subtypes using limited transcriptomic data.
- To differentiate between neuronopathic and non-neuronopathic forms of MPS.
- To demonstrate the utility of a novel bioinformatic approach for rare disease analysis.
Main Methods:
- Utilized transcriptomic data from a single patient representing each MPS type/subtype.
- Employed a gene grouping strategy based on minimizing the perceptron criterion (convex and piecewise linear function - CPL).
- Designed complexes of linear classifiers suitable for small, multivariate datasets.
Main Results:
- Successfully distinguished between neuronopathic and non-neuronopathic MPS forms using bioinformatic analysis.
- Gene expression patterns from single-patient data were sufficient for classification.
- The CPL approach enabled effective analysis of limited, high-dimensional rare disease data.
Conclusions:
- A novel bioinformatic method can classify rare diseases like MPS using minimal patient data.
- This approach is promising for analyzing other rare diseases with limited transcriptomic or similar data.
- Effective classification of MPS subtypes is achievable even with single-instance data per type.
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