ArticleBriefings in bioinformatics2021
A new method to accurately identify single nucleotide variants using small FFPE breast samples.
Article in Briefings in bioinformatics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Spatially Discontinuous Mutation Topographies in Ductal Carcinoma In Situ Reveal Noncompetitive Growth Dynamics.Cancer research · 2025Article
- Article
- Article
- Evolutionary measures show that recurrence of DCIS is distinct from progression to breast cancer.Breast cancer research : BCR · 2025Article
- Evolutionary Measures Show that Recurrence of DCIS is Distinct from Progression to Breast Cancer.medRxiv : the preprint server for health sciences · 2024Article
- Progression from ductal carcinoma in situ to invasive breast cancer: molecular features and clinical significance.Signal transduction and targeted therapy · 2024Review
- Growth Dynamics of Ductal Carcinoma in Situ Recapitulate Normal Breast Development.bioRxiv : the preprint server for biology · 2023Article
- A protocol for good quality genomic DNA isolation from formalin-fixed paraffin-embedded tissues without using commercial kits.Molecular biology reports · 2022Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
Most tissue collections of neoplasms are composed of formalin-fixed and paraffin-embedded (FFPE) excised tumor samples used for routine diagnostics. DNA sequencing is becoming increasingly important in cancer research and clinical management; however it is difficult to accurately sequence DNA from FFPE samples. We developed and validated a new bioinformatic pipeline to use existing variant-calling strategies to robustly identify somatic single nucleotide variants (SNVs) from whole exome sequencing using small amounts of DNA extracted from archival FFPE samples of breast cancers. We optimized this strategy using 28 pairs of technical replicates. After optimization, the mean similarity between replicates increased 5-fold, reaching 88% (range 0-100%), with a mean of 21.4 SNVs (range 1-68) per sample, representing a markedly superior performance to existing tools. We found that the SNV-identification accuracy declined when there was less than 40 ng of DNA available and that insertion-deletion variant calls are less reliable than single base substitutions. As the first application of the new algorithm, we compared samples of ductal carcinoma in situ of the breast to their adjacent invasive ductal carcinoma samples. We observed an increased number of mutations (paired-samples sign test, P < 0.05), and a higher genetic divergence in the invasive samples (paired-samples sign test, P < 0.01). Our method provides a significant improvement in detecting SNVs in FFPE samples over previous approaches.
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Registered trials
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