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Massively Parallel Sequencing for Rare Genetic Disorders: Potential and Pitfalls
Aideen M McInerney-Leo1, Emma L Duncan2
1Dermatology Research Centre, University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia.
Frontiers in Endocrinology
|March 8, 2021
Summary
Massively parallel sequencing (MPS) has revolutionized gene discovery, accelerating the identification of disease-related genes. This powerful technology, including whole exome sequencing and whole genome sequencing, offers new diagnostic capabilities and insights.
Area of Science:
- Genetics
- Genomics
- Bioinformatics
Background:
- Gene discovery historically relied on linkage analysis, identifying ~1,300 disease genes by 2000.
- The human genome project and massively parallel sequencing (MPS) ushered in a new era of accelerated gene discovery.
Purpose of the Study:
- To review the impact of massively parallel sequencing (MPS) on disease gene discovery.
- To compare different MPS technologies and discuss their applications and limitations.
- To explore the ethical, social, and legal implications of MPS in genetic testing.
Main Methods:
- Review of advancements in gene discovery methodologies.
- Comparison of whole exome sequencing (WES), whole genome sequencing (WGS), and panel sequencing.
- Discussion of the application of MPS in identifying various genetic mutations, including de novo and recessive variants.
Main Results:
- MPS significantly accelerates disease gene identification, reducing mapping time from years to weeks.
- MPS enables the discovery of genes for rare and complex genetic disorders, even from single individuals or small families.
- Whole exome sequencing (WES) has driven most discoveries, while whole genome sequencing (WGS) excels at detecting structural variations.
Conclusions:
- Massively parallel sequencing (MPS) has transformed genetic research and diagnostics.
- Different MPS techniques offer distinct advantages for specific genetic investigations.
- The integration of MPS into clinical practice is expanding, despite ongoing ethical and legal considerations.
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