bio-causal-genomics-genetic-correlation

bio-causal-genomics-genetic-correlation is a skill for Claude Code, Codex from PKU-YuanGroup/OpenAI4S. It costs 163 tokens per session (9,511 once invoked), scanned A, a copy of bio-causal-genomics-genetic-correlation, MIT.

A research workflow for measuring how much two traits share genetic influences using GWAS summary statistics or individual-level genetic data. The genetic correlation, written as `rg`, describes how similarly genetic differences are associated with two traits.

In plain words
What is it for?
Use it to estimate genetic correlation between two traits with methods including cross-trait LDSC, HDL, LAVA, rho-HESS, GREML, Popcorn, or HDL-L, and to compare shared genetic effects across regions or populations.
Why use it?
It helps distinguish traits with shared genetic architecture from traits whose genetic influences are mostly separate. The result can also provide an early check before using methods that investigate possible causal relationships.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to estimate genetic correlation between two traits with methods including cross-trait LDSC, HDL, LAVA, rho-HESS, GREML, Popcorn, or HDL-L, and to compare shared genetic effects across regions or populations.

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Install with agentmods
npx agentmods add skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add PKU-YuanGroup/OpenAI4S --skill bio-causal-genomics-genetic-correlation
Clone the repo
git clone --depth 1 https://github.com/PKU-YuanGroup/OpenAI4S

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bio-causal-genomics-genetic-correlation

README.md
[![agentmods](https://agentmods.dev/badge/skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation/github.svg)](https://agentmods.dev/skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation)
Your own site
<a href="https://agentmods.dev/skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation"><img src="https://agentmods.dev/badge/skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bio-causal-genomics-genetic-correlation

Your own site · 80×15
<a href="https://agentmods.dev/skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation"><img src="https://agentmods.dev/badge/skills/pku-yuangroup/openai4s/bio-causal-genomics-genetic-correlation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 163 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,511 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 98% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00163 $0.09511
Opus 5 $0.00081 $0.04756
Sonnet 5 $0.00033 $0.01902
Haiku 4.5 $0.00016 $0.00951

Measured 13d ago against content hash a52d58a7422a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

bio-causal-genomics-genetic-correlation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/ldsc_crosstrait_rg.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

98% identical to bio-causal-genomics-genetic-correlation — 14 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/bioskills/bio-causal-genomics-genetic-correlation/SKILL.md · 495 lines

How it starts

The opening of the file, as written. The whole thing — 495 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Version Compatibility

Reference examples tested with: LDSC v1.0.1+ (Python 3; prefer abdenlab/ldsc-python3 v2.0.0 -- belowlab/ldsc v3.0.1 README states the --h2 / --rg / --h2-cts CLI is broken; use Docker jtb114/ldsc:latest for the belowlab fallback; original bulik/ldsc is Python 2.7 unmaintained since 2019), HDL 1.4.0+ (R; GitHub zhenin/HDL), LAVA 0.1.0+ (R; GitHub josefin-werme/LAVA), HESS 0.5.4+ (Python; huwenboshi/hess), Popcorn 1.0+ (Python; brielin/Popcorn), GCTA 1.94+ (GREML-bivariate), baselineLD_v2.2 / eur_w_ld_chr LD-score panels from alkesgroup.broadinstitute.org/LDSCORE, UKB-array SVD eigen reference for HDL.

Before using code patterns, verify installed versions match. If versions differ:

  • Python: pip show <package> then python3 -c 'import <module>; help(<module>)'
  • R: packageVersion('<pkg>') then ?function_name
  • CLI: <tool> --version then <tool> --help

If code throws an LD-score "category not found" error, an HDL reference-panel mismatch, or a LAVA locus-ID lookup failure, introspect the installed LD-score column headers and the supplied partitioning file rather than retrying with default flags.

Genetic Correlation

"Estimate the genetic correlation between two traits from GWAS summary statistics" -> Decompose the bivariate genetic architecture into a single global rg (cross-trait LDSC, HDL), per-locus local rg (LAVA, rho-HESS, HDL-L), or cross-population rg (Popcorn). Genetic correlation is the central cross-trait statistic in causal genomics: it quantifies shared etiology, motivates CHP-aware MR sensitivity when high, gates LCV's gcp partial-causation parameter, and feeds into multi-trait analysis frameworks (MTAG, GenomicSEM). Tool choice is a decision about the regime (sumstats vs individual-level; global vs local; same-ancestry vs trans-ancestry) and the sample-overlap structure between input GWAS.

  • CLI (LDSC, robust to overlap): ldsc.py --rg trait1.sumstats.gz,trait2.sumstats.gz --ref-ld-chr eur_w_ld_chr/ --w-ld-chr eur_w_ld_chr/ --out rg
  • R (HDL, lower variance, requires independent samples): HDL.rg(gwas1.df, gwas2.df, LD.path = 'UKB_array_SVD_eigen90_extraction', N0 = 0)
  • R (LAVA, local rg per locus): process.input() -> run.univ() -> run.bivar(input, locus_id) over ~2495 LDetect-derived loci
  • CLI (rho-HESS, locus-level): hess.py --local-rhog t1.sumstats.gz t2.sumstats.gz --bfile <ref> --partition <part>.bed --chrom <chr>
  • CLI (Popcorn, trans-ancestry): popcorn fit -v 1 --cfile cross_pop_scores.txt --sfile1 pop1.txt --sfile2 pop2.txt out

Read the full file on GitHub · 495 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 13d ago First seen · 495 lines · 163 tokens per session scan A a52d58a7422a

Subscribe to this mod's changes

bio-causal-genomics-genetic-correlation is a skill published in the GitHub repository PKU-YuanGroup/OpenAI4S (407 stars, last pushed yesterday), licensed MIT. It adds 163 tokens to every session and 9,511 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to bio-causal-genomics-genetic-correlation, differing in 14 lines, and is treated as a copy.

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