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• Introduction
  • Overview of CLC LightSpeed Module
  • Contact information
  • System requirements
  • Installing modules
    • Licensing modules
    • Uninstalling modules
  • Installing server extensions
    • Licensing server extensions
• Methods
  • Trimming
    • Quality trimming
    • Adapter trimming
  • Generating read mappings
    • Readmapping - short reads
      • Indexing
      • Read mapping and read pairs
    • Readmapping - long reads
      • Indexing
      • Read mapping
    • Deduplication
    • Local realignment
    • UMI grouping
      • Definitions
    • Primer trimming
  • Structural variant detection
  • Variant detection
    • Germline variant detection
    • Somatic variant detection
    • Tumor normal variant detection
    • Variant detection using target regions
  • Batch processing
  • Compatibility with CLC Genomics Workbench tools
  • Limitations
• Tools
  • LightSpeed Fastq to Germline Variants
    • LightSpeed Fastq to Germline Variants outputs
  • LightSpeed Fastq to Somatic Variants
    • LightSpeed Fastq to Somatic Variants outputs
  • LightSpeed Fastq to Somatic Variants Tumor Normal
    • LightSpeed Fastq to Somatic Variants Tumor Normal outputs
  • Report from LightSpeed Fastq to Variants tools
    • Summary
    • Input read QC
    • Quality trimming
    • Adapter trimming
    • Mapping statistics
  • LightSpeed Long Reads to Germline Variants (beta)
    • LightSpeed Long Reads to Germline Variants (beta) outputs
    • Genotype track
      • Getting started
      • Locus table
      • Allele table
      • Track view
      • Header view
      • Differences between Genotype tracks and Variant tracks
      • VCF compatibility
  • Report from LightSpeed Long Reads to Germline Variants
    • Summary
    • Input read QC
    • Quality trimming
    • Mapping statistics
  • Calculate TMB Score (LightSpeed)
  • Copy Number Variant Detection (WGS)
    • Copy Number Variant Detection (WGS) outputs
  • LightSpeed Utility Tools
    • Convert Genotype Track to Variant Track (beta)
    • Import VCF to Genotype Track (beta)
    • Genotype Track Amino Acid Changes (beta)
  • Prepare Sequencing Data
    • LightSpeed Demultiplex QIAseq Long Reads
      • LightSpeed Demultiplex QIAseq Long Reads outputs
  • Export genotype track to VCF
• Template Workflows
  • General Template Workflows
    • Fastq to Germline Variants (WGS)
      • Outputs from Fastq to Germline Variants (WGS)
    • Fastq to Germline Variants (WES)
      • Outputs from Fastq to Germline Variants (WES)
    • Fastq to Somatic Variants (WGS)
      • Outputs from Fastq to Somatic Variants (WGS)
    • Fastq to Somatic Variants (WES)
      • Outputs from Fastq to Somatic Variants (WES)
    • Fastq to Somatic Variants (Tumor Normal) (WGS)
      • Outputs from Fastq to Somatic Variants (Tumor Normal) (WGS)
    • Fastq to Somatic Variants (Tumor Normal) (WES)
      • Outputs from Fastq to Somatic Variants (Tumor Normal) (WES)
    • Fastq to Germline CNV Control
      • Outputs from Fastq to Germline CNV Control
    • Fastq to Somatic CNV Control
      • Outputs from Fastq to Somatic CNV Control
  • Template Workflows - QIAseq Targeted DNA
    • QIAseq Fastq to Germline Variants
      • Outputs from QIAseq Fastq to Germline Variants
    • QIAseq Fastq to Somatic Variants
      • Outputs from QIAseq Fastq to Somatic Variants
    • QIAseq Fastq to Germline CNV Control
      • Outputs from QIAseq Fastq to Germline CNV Control
    • QIAseq Fastq to Somatic CNV Control
      • Outputs from QIAseq Fastq to Somatic CNV Control
  • Template Workflows - QIAseq Targeted DNA Pro
    • QIAseq Pro Fastq to Germline Variants
      • Outputs from QIAseq Pro Fastq to Germline Variants
    • QIAseq Pro Fastq to Somatic Variants
      • Outputs from QIAseq Pro Fastq to Somatic Variants
    • QIAseq Pro Fastq to Germline CNV Control
      • Outputs from QIAseq Pro Fastq to Germline CNV Control
    • QIAseq Pro Fastq to Somatic CNV Control
      • Outputs from QIAseq Pro Fastq to Somatic CNV Control
  • Template Workflows - QIAseq xHYB Long Read
    • QIAseq xHYB Long Reads to Germline Variants (ONT) (beta)
      • Outputs from QIAseq xHYB Long Reads to Germline Variants (ONT) (beta)
    • QIAseq xHYB Long Reads to Germline Variants (PacBio) (beta)
      • Outputs from QIAseq xHYB Long Reads to Germline Variants (PacBio) (beta)
    • Guide to changing reference data
• Bibliography

Adapter trimming

The algorithm can trim adapter sequences from mapped paired-end reads. For each individual read in a pair, read sequence that extends beyond the 5' end of the other read in the pair, is considered adapter sequence and is trimmed.

If consensus sequences can be calculated from the adapter sequences removed from R1 and/or R2, these are included in the report. Provided consensus sequences start with the first base that is removed, and continue until it is no longer possible to confidently calculate a consensus.

It is possible to remove trimmed reads that are shorter than a defined threshold after adapter trimming.

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