Running Ultima analysis pipelines on AWS HealthOmics

Ultima Genomics offers pipelines as Ready2Run workflows on AWS HealthOmics. Ready2Run workflows enable you to run these pipelines on AWS HealthOmics by simply bringing your data. For more flexibility, such as the use of larger file sizes or changing the reference genome, you can convert Ready2Run workflows to private workflows.

To get started visit the UltimaGenomics repository for workflows compatible with AWS HealthOmics:

Each Ready2Run workflow folder contains the following:

  • Required WDL file(s)

  • “How To” documentation that details the workflow and how to run it externally of WDL.

  • Documentation of the WDL inputs and outputs

  • .json file that lists the parameters for workflow

  • Folder with optional input templates with default parameters for the WDL

  • Folder containing tasks the WDL is running

For more questions about these workflows, contact healthomics.support@ultimagen.com

Germline Variant Calling using Efficient DV

Ultima utilizes Efficient DV, an analysis pipeline designed to call variants from aligned CRAM files using a version of DeepVariant adapted for Ultima Genomics data.

For detailed instructions on implementing this workflow please visit: https://github.com/Ultimagen/healthomics-workflows/blob/main/workflows/efficient_dv/howto-germline-calling-efficient-dv.md 

Structural Variant (SV) Calling

SV calling pipeline detects SVs using an in-house assembly tool, GRIDSS tool for SV detection and GRIPSS tool for filtering the output callset. The pipeline supports both germline and somatic modes.

The pipeline takes as input aligned BAM/CRAM files and outputs a filtered VCF containing annotated SV calls. The steps of the pipeline are as follows: assembly, realignment with Ultima Aligner, reverting secondary low MAPQ alignments, GRIDSS identification of SVs, GRIDSS annotation and SV filtering using GRIPSS for somatic runs and GermlineLinkVariants which links GRIDSS breakends to create an SV for germline runs.

For detailed instructions on implementing this workflow please visit: https://github.com/Ultimagen/healthomics-workflows/blob/main/workflows/structural_variant_pipeline/howto-structural-variant-calling.md