Official agent skill

Genomics Variant Interpretation

by aws-samples in aws-samples/amazon-bedrock-agents-healthcare-lifesciences

A skill your agent uses when interpreting genomic variants from VCF files, performing clinical variant classification using ClinVar/VEP annotations, analyzing allele frequencies against population…

OfficialMIT-0Auto-check passedResearch & Science

Install Genomics Variant Interpretation

skills CLI
$ npx skills add aws-samples/amazon-bedrock-agents-healthcare-lifesciences --skill genomics-variant-interpretation -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aws-samples/amazon-bedrock-agents-healthcare-lifesciences genomics-variant-interpretation --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aws-samples/amazon-bedrock-agents-healthcare-lifesciences.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/genomics-variant-interpretation .claude/skills/genomics-variant-interpretation && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
genomics-variant-interpretation
GitHub stars
274
Token cost
~1.5k tokens
SKILL.md length
426 words
Files
3 (incl. scripts, references)
Skills in repo
12
Repo updated
First seen
Licence
MIT-0

At a glance

A skill your agent uses when interpreting genomic variants from VCF files, performing clinical variant classification using ClinVar/VEP annotations, analyzing allele frequencies against population…

  • Works in 5 steps: Select the appropriate analysis tool → Apply quality filtering → Interpret clinical significance → …
  • Interpreting genomic variants from VCF files
  • SKILL.md covers When to use this skill, Workflow: Clinical Variant…, Tool Reference and Data Architecture, plus 2 more sections
  • Performing clinical variant classification using ClinVar/VEP annotations

What it does

Genomics Variant Interpretation is an agent skill from aws-samples/amazon-bedrock-agents-healthcare-lifesciences, published by the product's own GitHub organization. Use when interpreting genomic variants from VCF files, performing clinical variant classification using ClinVar/VEP annotations, analyzing allele frequencies against population data (1000 Genomes), or generating clinical reports for genetic counseling.

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts and reference files.

It sits in Research & Science, covering Bioinformatics and Clinical and healthcare research. The licence is MIT-0.

When your agent uses it

  • Interpreting genomic variants from VCF files
  • Performing clinical variant classification using ClinVar/VEP annotations
  • Analyzing allele frequencies against population data (1000 Genomes)
  • Generating clinical reports for genetic counseling

Example prompts

  • “/genomics-variant-interpretation”

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Select the appropriate analysis tool
  2. Apply quality filtering
  3. Interpret clinical significance
  4. Assess population frequency context
  5. Generate clinical report

What it can do on your machine

Read from SKILL.md and the folder at commit 9960565. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/, which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Genomics Variant Interpretation loads about 1.5k tokens when it runs. Until then it costs about 71 tokens; SKILL.md has 426 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~71
When it runs · the whole SKILL.md, loaded when a task matches
~1.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from aws-samples/amazon-bedrock-agents-healthcare-lifesciences at commit 9960565, republished under its MIT-0 licence (© aws-samples). 426 words, ~1,483 tokens.

Download SKILL.mdSave it as .claude/skills/genomics-variant-interpretation/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
genomics-variant-interpretation
description
Use when interpreting genomic variants from VCF files, performing clinical variant classification using ClinVar/VEP annotations, analyzing allele frequencies against population data (1000 Genomes), or generating clinical reports for genetic counseling.

Genomics Variant Interpretation

When to use this skill

  • Interpret variants in specific genes (BRCA1/2, TP53, CYP2D6)
  • Classify variant pathogenicity using ClinVar + VEP annotations
  • Compare allele frequencies against population databases (1000 Genomes)
  • Analyze a patient cohort for pharmacogenomic or cancer-risk variants
  • Generate clinical-grade variant reports

Workflow: Clinical Variant Interpretation

Step 1: Select the appropriate analysis tool
User questionToolParameters
Variants in specific genesquery_variants_by_genegene_symbols, sample_ids
Chromosomal region analysisquery_variants_by_chromosomechromosome, position_range
Rare variant discoveryanalyze_allele_frequenciesfrequency_threshold
Cohort comparisoncompare_sample_variantssample_ids (min 2)
Complex/custom questionsexecute_dynamic_genomics_queryuser_question
Step 2: Apply quality filtering

All queries automatically enforce:

  • qual > 30 (quality score threshold)
  • PASS filter status
  • Cardinality checks on VEP annotation arrays

These filters ensure only high-confidence variants enter clinical interpretation.

Step 3: Interpret clinical significance

Classification hierarchy (act on highest applicable):

ClinVar SignificanceVEP ImpactAction
PathogenicHIGHImmediate clinical attention
PathogenicMODERATEClinical attention, confirm with functional data
Likely_pathogenicHIGHStrong candidate, recommend confirmatory testing
Likely_pathogenicMODERATEMonitor, include in report
Uncertain_significance (VUS)HIGHFlag for reassessment, research interest
VUSMODERATEMonitor, periodic reclassification
Benign / Likely_benignAnyNo clinical action

Priority scoring (used in query results):

Pathogenic + HIGH impact = 10
Pathogenic + MODERATE = 9
Likely_pathogenic + HIGH = 8
Likely_pathogenic + MODERATE = 7
VUS + HIGH = 6
HIGH impact (no ClinVar) = 5
VUS + MODERATE = 4
All others = 1
Step 4: Assess population frequency context

Use analyze_allele_frequencies with 1000 Genomes data:

Frequency categoryThresholdInterpretation
Very Rare< 0.001 (0.1%)Potential novel pathogenic variant
Rare< 0.01 (1%)Candidate for rare disease
Uncommon< 0.05 (5%)May be population-specific
Common>= 0.05Likely benign polymorphism

Rule: Pathogenic variants for Mendelian diseases are almost always < 1% frequency.

Step 5: Generate clinical report

Structure: Patient ID, Gene, Variant (chr:pos:ref>alt), Consequence, Impact, ClinVar significance, Population frequency (1000G AF + rarity category), Associated disease (CLNDN), Clinical interpretation, Recommended follow-up.

Show full SKILL.md (159 more words)Show less

Tool Reference

query_variants_by_gene
Input: gene_symbols ("BRCA1,BRCA2,TP53"), sample_ids (optional), include_frequency (bool)
Output: Variants with VEP annotation, ClinVar significance, priority score
Use for: Targeted gene panels, cancer predisposition, pharmacogenomics
query_variants_by_chromosome
Input: chromosome ("17"), sample_ids (optional), position_range ("32000000-33000000")
Output: All PASS variants in region with annotations
Use for: CNV analysis, specific loci investigation, regional patterns
analyze_allele_frequencies
Input: sample_ids (optional), frequency_threshold (default 0.01)
Output: Variants with rarity classification, quality tiers, 1000G comparison
Use for: Rare disease analysis, novel variant discovery, population genetics
compare_sample_variants
Input: sample_ids ("NA21135,NA21137" -- minimum 2)
Output: Per-sample summary: total variants, pathogenic count, impact distribution, quality metrics
Use for: Family studies, cohort stratification, trio analysis
execute_dynamic_genomics_query
Input: user_question (natural language), sample_ids (optional)
Output: Custom SQL generated and executed against HealthOmics stores
Use for: Complex questions not covered by specialized tools

Data Architecture

Variant data lives in AWS HealthOmics stores queried via Athena:

  • Variant Store (genomicsvariantstore): sample, position, alleles, quality, VEP annotations
  • Annotation Store (genomicsannotationstore): ClinVar attributes (CLNSIG, CLNDN, GENEINFO)

Stores are joined on: contigname + start + referenceallele + alternatealleles[1]

VEP annotation fields: symbol, impact, consequence, biotype, sift_prediction, polyphen_prediction ClinVar fields: CLNSIG, CLNDN, GENEINFO, CLNREVSTAT, RS, ALLELEID

Common Analysis Patterns

PatternGenesFilterAction
Cancer predispositionBRCA1, BRCA2, TP53, PALB2, CHEK2, ATMPathogenic/Likely_pathogenicGenetic counseling referral
PharmacogenomicsCYP2D6, CYP2C19, CYP2C9, DPYD, TPMTFunctional impact allelesMedication dosing adjustment
Rare disease triageAll (frequency filter)Very Rare + HIGH + not BenignCandidate list for clinical review

Conventions

  • Lead reports with the most actionable finding first
  • Include population frequency context for every pathogenic call
  • Distinguish germline (inherited) from somatic (tumor) context
  • For VUS: note classification may change with new evidence
  • Never state a variant is definitively causal without functional evidence
  • Include quality metrics (qual, depth) to assess confidence

© aws-samples, MIT-0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (scripts, references) in skills/genomics-variant-interpretation of aws-samples/amazon-bedrock-agents-healthcare-lifesciences.

  • SKILL.md
  • references/.gitkeep
  • scripts/.gitkeep

Open the folder on GitHubat commit 9960565

Compare with similar skills

Genomics Variant Interpretation next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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PacsomaticK-Dense-AI/scientific-agent-skills48k1 repos~1.6kAutomated safety check: PassMIT
Tooluniverse Precision Medicine Stratificationwu-yc/LabClaw1.1k2 repos~12kAutomated safety check: PassNone
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Questions about Genomics Variant Interpretation

What does Genomics Variant Interpretation do?

A skill your agent uses when interpreting genomic variants from VCF files, performing clinical variant classification using ClinVar/VEP annotations, analyzing allele frequencies against population…. Genomics Variant Interpretation is an agent skill from aws-samples/amazon-bedrock-agents-healthcare-lifesciences, published by the product's own GitHub organization. Use when interpreting genomic variants from VCF files, performing clinical variant classification using ClinVar/VEP annotations, analyzing allele frequencies against population data (1000 Genomes), or generating clinical reports for genetic counseling.

When should I use Genomics Variant Interpretation?

Genomics Variant Interpretation fits situations like: interpreting genomic variants from VCF files; performing clinical variant classification using ClinVar/VEP annotations; analyzing allele frequencies against population data (1000 Genomes); generating clinical reports for genetic counseling.

How do I install Genomics Variant Interpretation in Claude Code?

Run `npx skills add aws-samples/amazon-bedrock-agents-healthcare-lifesciences --skill genomics-variant-interpretation -a claude-code`. Or copy the skill folder (skills/genomics-variant-interpretation in aws-samples/amazon-bedrock-agents-healthcare-lifesciences) into .claude/skills/genomics-variant-interpretation in your project. Claude Code loads it when a task matches its description.

How do I install Genomics Variant Interpretation in Codex?

Run `npx skills add aws-samples/amazon-bedrock-agents-healthcare-lifesciences --skill genomics-variant-interpretation -a codex`. Or copy the skill folder (skills/genomics-variant-interpretation in aws-samples/amazon-bedrock-agents-healthcare-lifesciences) into .agents/skills/genomics-variant-interpretation in your project. Codex loads it when a task matches its description.

Can I use Genomics Variant Interpretation in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aws-samples/amazon-bedrock-agents-healthcare-lifesciences --skill genomics-variant-interpretation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/genomics-variant-interpretation, .gemini/skills/genomics-variant-interpretation, .github/skills/genomics-variant-interpretation and .opencode/skills/genomics-variant-interpretation in your project.

What does Genomics Variant Interpretation need to run?

SKILL.md names no scripts, command-line tools or credentials: Genomics Variant Interpretation is instructions for the agent only.

Does Genomics Variant Interpretation access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Genomics Variant Interpretation safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Genomics Variant Interpretation use?

Genomics Variant Interpretation is published under the MIT-0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Genomics Variant Interpretation use?

About 1.5k tokens (SKILL.md is roughly 5.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Genomics Variant Interpretation?

Skills that share tags, products or a category with Genomics Variant Interpretation: Biomedical Analysis Dispatch (xjtulyc/MedgeClaw, 617 stars), Pacsomatic (K-Dense-AI/scientific-agent-skills, 48k stars), Tooluniverse Precision Medicine Stratification (wu-yc/LabClaw, 1.1k stars) and Database Lookup (majiayu000/claude-skill-registry, 666 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Genomics Variant Interpretation?

aws-samples (a GitHub organization, an official publisher) maintains it in aws-samples/amazon-bedrock-agents-healthcare-lifesciences, which has 274 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 1, 2026.

Source: aws-samples/amazon-bedrock-agents-healthcare-lifesciences on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.