> For the complete documentation index, see [llms.txt](https://docs.finngen.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.finngen.fi/finngen-data-specifics/red-library-data-individual-level-data/genotype-data/types-of-genotype-files-available/grm-data.md).

# Genetic relationships (GRM)

This page has been last updated for R13.

### Sandbox directory

Genetic relationships (GRM) are available in the following Sandbox directory:

`/finngen/library-red/finngen_R[RELEASE]/grm_1.0`

### Data files

We use a high-quality LD-pruned subset of the imputed genotype data for genetic relationship matrix (GRM) calculation. The data has been generated using [plink](https://www.cog-genomics.org/plink/2.0/formats) with hard-called genotypes. Population outliers and genetic duplicates are excluded from the imputed genotype data files and this explains the difference in samples between imputed data files and GRM files.

* `R[RELEASE]_GRM_VO_LD_0.2.bed`: GRM file in PLINK binary biallelic genotype table format
* `R[RELEASE]_GRM_VO_LD_0.2.bim`: Extended variant information file accompanying the .bed file
* `R[RELEASE]_GRM_VO_LD_0.2.fam`: Sample information file accompanying the .bed file
* `R[RELEASE]_GRM_VO_LD_0.2.log`: Log from plink
* `R[RELEASE]_variants_info_allbatches_0.90.txt`: Sisu v4.2 panel variants with INFO score >= 0.90 in every batch in format "chr\_pos\_ref\_alt"

Please refer to the readme file in the sandbox directory for full details of the available data.