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October 17, 2022Molecular Genetics & Genomic MedicineOpen Access

Scalable detection of technically challenging variants through modified next‐generation sequencing

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Authors

SRSusan RojahnTHTina HambuchJAJessika Adrian

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Overview

Analytical validation study demonstrates accurate detection of complex variants using adapted next-generation sequencing, indicating a scalable workflow for comprehensive genetic screening.

Key Points

  • Determine whether pairing customized target enrichment chemistries with bioinformatic masking enables next-generation sequencing to accurately detect technically challenging genetic variants.
  • Customized next-generation sequencing pipelines using specialized target enrichment and bioinformatic masking to resolve high-similarity sequences and repetitive short regions.
  • Validated the adapted assays using reference genomic samples with known genotypes across challenging genes (including PMS2, SMN1/SMN2, GBA1, HBA1/HBA2, CYP21A2, ARX, and MSH2).
  • Achieved 100% analytical sensitivity across all evaluated technically challenging genetic variants.
  • Yielded 100% specificity for PMS2, GBA1, SMN1/SMN2, HBA1/HBA2, and MSH2 Boland inversions, with 97.8%–100% specificity for CYP21A2 and 85.7% specificity for ARX polyalanine repeats.

Cite This Study

Rojahn et al. (2022) studied this question.

synapsesocial.com/papers/6a8a7bbd5246293882fd90a2https://doi.org/10.1002/mgg3.2072
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Also Consider

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  1. 1MLDP-AS: An Optimized Next-Generation Sequencing Assay for Enhanced Detection of Technically Challenging Variants in Expanded Carrier Screening2025
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  5. 5Targeted Next-Generation Sequencing can Replace Sanger Sequencing in Clinical Diagnostics2013 · 304 citations