Application of massively parallel sequencing (MPS) in paternity testing - case report
Archiwum Medycyny Sadowej I Kryminologii
|October 4, 2017
Summary
Massively parallel sequencing (MPS) resolved a disputed paternity case by identifying complex DNA variations missed by standard capillary electrophoresis. This advanced forensic genomics technique provided definitive paternity conclusions and detailed intra-allelic polymorphism.
Area of Science:
- Forensic Science
- Genomics
- Molecular Biology
Background:
- Standard paternity testing relies on capillary electrophoresis (CE) of autosomal short tandem repeats (STRs).
- Disputed paternity cases can present complex genetic scenarios challenging traditional methods.
Observation:
- CE revealed two mismatches (D21S11, VWA) between the child and putative father.
- Massively parallel sequencing (MPS) was employed as an advanced analytical tool.
Findings:
- MPS identified a non-consensus VWA allele (14) in the mother-child pair, explaining the CE mismatch.
- Sequence variants were detected in homozygous D3S1358 alleles in the child, revealing intra-allelic polymorphism.
Implications:
- MPS offers enhanced resolution for complex paternity testing, overcoming limitations of CE.
- This technology provides comprehensive genetic information, aiding in definitive legal and familial conclusions.
- Detailed analysis of intra-allelic polymorphism enhances the power of forensic DNA analysis.
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