Enhancing Molecular Testing for Effective Delivery of Actionable Gene Diagnostics

Area of Science:

• Genomics
• Molecular Biology
• Clinical Genetics

Background:

• Current genomic sequencing methods often use a bulk approach, limiting the resolution of single-cell analysis.
• This bulk approach leaves genomic heterogeneity, mosaicism, and complex structural variants partially uncharacterized.
• Clinical diagnostics face challenges in deciphering disease-causing genomic sequences and understanding genotype-phenotype correlations.

Purpose of the Study:

• To review the application of nanopore sequencing in clinical genomics.
• To highlight the significance of genetic counseling in the context of advanced genomic analysis.
• To propose a comprehensive approach for phenotype-driven molecular diagnosis.

Main Methods:

• Review of current literature on nanopore sequencing in clinical genomics.
• Discussion of the role of genetic counseling (pre- and post-test).
• Conceptual framework for phenotype-driven molecular diagnosis.

Main Results:

• Nanopore sequencing provides single-molecule, long-read, high-resolution data in real-time, including nucleic acid sequence and methylation.
• Accurate interpretation of genotype-phenotype correlations is crucial, especially considering the interplay of multiple variants.
• Inheritable disorders can exhibit phenotypic variability even within families.

Conclusions:

• Nanopore sequencing holds promise for advancing clinical genomics by enabling detailed analysis of genomic data.
• Integrating genetic counseling with advanced sequencing techniques can lead to a more effective phenotype-driven molecular diagnostic approach.
• This integrated approach has the potential to reduce diagnostic timelines and facilitate actionable diagnoses and therapeutic interventions.