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Nimbus: a design-driven analyses suite for amplicon-based NGS data.

R W W Brouwer1, M C G N van den Hout1, C E M Kockx1

  • 1Center for Biomics, Department of Cell Biology, Erasmus MC, 3000CA Rotterdam, The Netherlands.

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Summary
This summary is machine-generated.

Nimbus is a new software suite that improves amplicon-based sequencing analysis by tracking DNA source amplicons. This enhances variant calling accuracy and optimizes assay design for next-generation sequencing data.

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Area of Science:

  • Genomics
  • Bioinformatics

Background:

  • PCR-based DNA enrichment and massively parallel sequencing are cost-effective for high-depth gene sequencing.
  • Current analysis methods for amplicon-based sequencing do not fully leverage source amplicon information, limiting potential.
  • Tracking source amplicons can identify biases, improve variant calling, and refine future assay designs.

Purpose of the Study:

  • To introduce Nimbus, a comprehensive software suite for analyzing amplicon-based sequencing data.
  • To provide tools for data pre-processing, alignment, variant calling (SNPs, indels), quality control, and visualization.
  • To enable design optimization and accurate variant detection by tracking amplicons.

Main Methods:

  • Nimbus utilizes alignment seeds to detect single nucleotide polymorphisms (SNPs) and employs decoy amplicons to mitigate alignment issues.
  • The software tracks amplicons throughout the analysis pipeline for performance comparison and design optimization.
  • It differentiates false positive variants within single amplicons from true variants across multiple amplicons.

Main Results:

  • Nimbus was evaluated using HaloPlex Exome datasets, demonstrating superior performance in calling low-frequency variants compared to other methods.
  • High concordance was observed between variants called by Nimbus in twin samples and those identified by SNP-arrays.
  • The software successfully provides end-to-end solutions for variant calling, design optimization, and visualization.

Conclusions:

  • Nimbus offers an integrated solution for analyzing amplicon-derived next-generation sequencing data.
  • The software enhances the accuracy of variant calling and facilitates the optimization of amplicon-based sequencing assays.
  • Nimbus improves the overall utility and potential of amplicon-based sequencing by accounting for source amplicon information.