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GENOMICS 30 days · 6 modules · Online

DNA-Seq Variant Calling Workshop (30-Day, Online)

From raw reads to a prioritized variant list: alignment, calling, annotation, and filtering for whole genomes and exomes.

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About this workshop

Sequencing a genome or exome produces millions of short reads, and the real work is turning them into a short, trustworthy list of variants that could matter. This workshop follows that path: cleaning reads, aligning them to a reference, preparing the alignments, and calling single-nucleotide variants and small insertions and deletions. You learn how quality scores and filters separate real variants from errors, and how annotation predicts the effect of each change and shows how common it is in populations. You then narrow the list using inheritance patterns and gene relevance, and check key variants visually in a genome browser. The mini-project applies the full pipeline to a real exome or genome dataset, so you finish with a method you can reuse.

Tools and pipelines you will use

This workshop emphasizes standard, open-source bioinformatics tools widely used in peer-reviewed genomics literature:

What you will learn

Module 1 Foundations
Week 1
Linux and command-line basics Run tools and organise projects.
DNA sequencing designs Whole-genome, exome and targeted panels compared.
File formats FASTQ, BAM, VCF and reference files.
Read quality control Clean reads before alignment.
Module 2 Alignment
Reference genome preparation Index the genome and annotation files.
Mapping reads Align reads to the reference.
Post-alignment processing Sort, mark duplicates and recalibrate.
Coverage and quality metrics Check depth and mapping performance.
Module 3 Variant calling
SNPs and indels Call small variants from alignments.
Calling strategies Single-sample and multi-sample approaches.
Hard filters and quality scores Remove unreliable calls.
Comparing callers See how different tools agree.
Module 4 Annotation
Effect prediction Classify variants by their predicted impact.
Population frequency Separate common from rare variants.
Known variant databases Check clinical and research resources.
Annotated tables Build files ready to filter.
Module 5 Filtering and prioritization
Filtering strategies Narrow thousands of variants to a short list.
Inheritance patterns Apply family and case-control logic.
Candidate genes Rank variants by likely relevance.
Visual review Confirm important variants in a genome browser.
Module 6 Mini-project and report
Week 4
Project dataset Analyse a public exome or genome dataset.
Reproducible workflow Record every step and setting.
Figures and write-up Summarize variants and candidates.
Review and next steps Discuss validation and limitations.

What you receive & prerequisites

What you receive

  • 30 days of structured online self-paced access & mentor guidance
  • Curated real-world NGS benchmark datasets
  • Reusable pipeline scripts and command-line code templates
  • Independent capstone mini-project evaluation
  • Certificate of Completion issued by Xenoi Biotech Pvt. Ltd.

Prerequisites & setup

  • Basic life science background (B.Sc., M.Sc., B.Tech, or research scholar)
  • No prior programming or Linux experience required (covered in Module 1)
  • Laptop or PC with 8 GB RAM and internet access
  • Remote compute setup instructions provided during onboarding

Course curriculum designed by Anjali Chaudhary, Bioinformatics Scientist at Xenoi Biotech.

Last updated: October 2026

Frequently asked questions

Is this DNA-Seq (variants) workshop delivered online?

Yes. All Xenoi Biotech workshops are delivered 100% online, allowing researchers and students across India and internationally to participate with remote compute support.

How long is the workshop and what is the workload?

The workshop runs for 30 days across 6 structured modules. Learners typically dedicate 1 to 2 flexible hours per day to work through pipeline commands, code exercises, and the mini-project.

Who is this workshop designed for?

It is built for B.Sc., M.Sc., and Ph.D. students, postdoctoral researchers, faculty members, and industry professionals in biotechnology, biochemistry, microbiology, and medicine who need to analyze NGS datasets independently.

What will I learn in this workshop?

You will master the GATK Best Practices workflow: BWA alignment, duplicate marking, base quality score recalibration (BQSR), germline variant calling with HaplotypeCaller, VQSR filtering, and clinical/population annotation via Ensembl VEP.

What are the fees, dates, and enrollment details?

The workshop fee is MRP ₹5,000, inclusive of GST. Batch dates are shared on enquiry. Use the Enrol now button to reserve your place or receive the upcoming schedule.

Fees, dates and batches

The workshop fee is MRP ₹5,000 (incl. GST). Batch dates and onboarding materials are shared upon enquiry.

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