[Detection of pathogenic mutations for methylmalonic acidemia using new-generation semiconductor targeted sequencing]

Area of Science:

• Genetics
• Molecular Biology
• Genomic Medicine

Context:

• Methylmalonic acidemia is a complex monogenic disease.
• Accurate genetic diagnosis is crucial for patient management.
• Next-generation sequencing (NGS) offers advanced diagnostic capabilities.

Purpose:

• To detect pathogenic mutations in a methylmalonic acidemia patient using IonTorrent Personal Genome Machine (PGM).
• To evaluate the feasibility of PGM technology for analyzing complex monogenic diseases.

Summary:

• Targeted sequencing of the MMAA gene was performed on a patient with methylmalonic acidemia.
• A known nonsense mutation (c.586C>T) and a novel mutation (c.898C>T) were identified.
• Sanger sequencing confirmed both MMAA gene mutations.

Impact:

• Successfully identified pathogenic MMAA mutations in a patient.
• Demonstrates the utility of PGM-based targeted sequencing for diagnosing hereditary diseases.
• Highlights the potential of NGS in clinical genetic diagnostics.