# Imputed genotypes in VCF format This page has been last updated for R11. ### Sandbox directory Imputed genotypes in the [VCF](https://en.wikipedia.org/wiki/Variant_Call_Format) format are available in the following Sandbox directory: `/finngen/library-red/finngen_R[RELEASE]/genotype_1.0` ### Data files One VCF file is available for each chromosome: `data/finngen_R[RELEASE]_chr[CHROM].vcf.gz` The VCF files come with their `.tbi` files. Please refer to the readme file in sandbox directory for full details of the available data. ### Further information The imputed genotype data is comprised of multiple data sets that include samples from various cohorts. The exact batches and cohorts as well as VCF INFO field tags are explained in release supplementary files. [IMPUTE2](http://mathgen.stats.ox.ac.uk/impute/impute_v2.html) INFO metrics and allele frequencies (AF) are calculated per dataset, as well as for the entire dataset. The data contains only variants present in the [imputation panel](/finngen-data-specifics/red-library-data-individual-level-data/genotype-data/imputation-panel.md). [Chip genotype data](/finngen-data-specifics/red-library-data-individual-level-data/genotype-data/types-of-genotype-files-available/chip-data-file.md) is released separately. Duplicate individuals (excluding identical twins) and biobank denials have been removed from the data. All variants are on the forward strand. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.finngen.fi/finngen-data-specifics/red-library-data-individual-level-data/genotype-data/types-of-genotype-files-available/imputation-data-file.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.