Whole Mitochondrial Genome Sequencing using Next-Generation Sequencing

• Test Name: Whole Mitochondrial Genome Sequencing using Next-Generation Sequencing (NGS)
• Test Type: Comprehensive genetic sequencing
• Specimen Required: Blood sample, saliva, or tissue sample for DNA extraction
• Methodology: Next-Generation Sequencing (NGS) of the entire mitochondrial genome
• Purpose: Provides a full sequence analysis of the mitochondrial genome to detect mutations, deletions, and other genetic variants associated with mitochondrial diseases.

• Diagnosis: Detects mutations in mitochondrial DNA (mtDNA) that are associated with various mitochondrial disorders, such as mitochondrial myopathy, MELAS, and Leigh syndrome.
• Carrier Screening: Identifies carriers of mitochondrial DNA mutations, which is crucial for family planning and understanding the risk of passing these mutations to offspring.
• Research: Used in research to study the role of mitochondrial mutations in diseases, ageing, and other biological processes.
• Personalized Medicine: Facilitates the development of personalized treatment plans based on the specific mitochondrial mutations present in an individual.

• Components:
  • DNA extraction from the provided specimen (e.g., blood, saliva, or tissue).
  • Amplification of the entire mitochondrial genome.
  • High-throughput sequencing of the mitochondrial genome using NGS technology.
  • Bioinformatics analysis to identify mutations, deletions, and other variants.
  • A comprehensive report detailing the genetic findings, including known pathogenic variants, variants of uncertain significance, and benign variants.
• Procedure:
  • The patient’s DNA is extracted and prepared for sequencing.
  • The entire mitochondrial genome is sequenced using NGS technology.
  • Data is analyzed to detect any genetic abnormalities, which are then interpreted by a geneticist.

• Normal Findings: No pathogenic mutations or significant variants were detected in the mitochondrial genome.
• Detected Abnormalities: Identification of mutations, deletions, or other variants linked to mitochondrial diseases.
• Variants of Uncertain Significance (VUS): Variants that are detected but whose impact on health is not yet fully understood.
• Clinical Correlation: Results should be interpreted in the context of the patient's clinical symptoms, family history, and other diagnostic tests.

• Qualitative and Quantitative: Provides detailed information on the presence, type, and frequency of mutations or deletions in the mitochondrial genome.
• Interpretation: The results are categorized based on the type of mutation (pathogenic, VUS, benign) and its clinical significance.
• Report: A detailed report is provided, which includes the detected genetic variants and their implications for the patient’s health.
• Turnaround Time: Typically 4-6 weeks, depending on the complexity of the case and the laboratory's capacity.

Q. What is the Whole Mitochondrial Genome Sequencing NGS Test?
This test uses Next-Generation Sequencing (NGS) to analyze the entire mitochondrial genome, identifying mutations and deletions associated with mitochondrial diseases
 

Q. Why is the Whole Mitochondrial Genome Sequencing NGS Test performed?
The test is performed to diagnose mitochondrial disorders, understand carrier status, and contribute to personalized treatment plans based on mitochondrial DNA mutations
 

Q. How is the Whole Mitochondrial Genome Sequencing NGS Test conducted?
A sample of blood, saliva, or tissue is collected, DNA is extracted, and the mitochondrial genome is sequenced using NGS technology to identify any genetic abnormalities
 

Q. What can the results of the Whole Mitochondrial Genome Sequencing NGS Test reveal?
The results can reveal pathogenic mutations, variants of uncertain significance (VUS), or benign variants in the mitochondrial genome, which may be associated with mitochondrial disorders
 

Q.  How long does it take to get results from the Whole Mitochondrial Genome Sequencing NGS Test?
Results are usually available within 4-6 weeks after the sample is submitted to the laboratory
 

Q. Is any special preparation required for the Whole Mitochondrial Genome Sequencing NGS Test?
No special preparation is required for the test, but it’s recommended to consult with a genetic counsellor before and after testing to understand the implications of the results
 

Q. What should I do if the Whole Mitochondrial Genome Sequencing NGS Test shows a mutation?
If a mutation is detected, your healthcare provider will discuss the findings with you, and genetic counselling may be recommended to explore treatment options and understand the potential impact on family members.