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Please use the following description when referring to our project:
The FinnGen study is a large-scale genomics initiative that has analyzed over 500,000 Finnish biobank samples and correlated genetic variation with health data to understand disease mechanisms and predispositions. The project is a collaboration between research organisations and biobanks within Finland and international industry partners.
When using these results in publications, please remember to:
Acknowledge the FinnGen study. You can use the following text:
“We want to acknowledge the participants and investigators of the FinnGen study”
Cite our latest publication:
Kurki, M.I., Karjalainen, J., Palta, P. et al. FinnGen provides genetic insights from a well-phenotyped isolated population. Nature 613, 508–518 (2023). https://doi.org/10.1038/s41586-022-05473-8
Furthermore, if possible, include "FinnGen" as a keyword for your publication.
If you want to cite this website, use the following citation:
Chip genotype data processing and QC Samples were genotyped with Illumina (Illumina Inc., San Diego, CA, USA) and Affymetrix arrays (Thermo Fisher Scientific, Santa Clara, CA, USA).
Genotype calls were made with GenCall and zCall algorithms for Illumina and AxiomGT1 algorithm for Affymetrix data.
Chip genotyping data produced with previous chip platforms and reference genome builds were lifted over to build version 38 (GRCh38/hg38) following the protocol described here: dx.doi.org/10.17504/protocols.io.xbhfij6.
In sample-wise quality control steps, individuals with ambiguous gender, high genotype missingness (>5%), excess heterozygosity (+-4SD) and non-Finnish ancestry were excluded. In variant-wise quality control steps, variants with high missingness (>2%), low HWE P-value (<1e-6) and low minor allele count (MAC<3) were excluded.
Before imputation, chip-genotyped samples were pre-phased with Eagle 2.3.5 using the default parameters, except the number of conditioning haplotypes, which was set to 20,000.
Hail v0.2
Cromwell-42
Wdltool-0.14
Plink 1.9 and 2.0
BCFtools 1.7 and 1.9
Eagle 2.3.5
Beagle 4.1 (version 27Jan18.7e1)
R 3.4.1 (packages: data.table 1.10.4, sm 2.2-5.4)
To download FinnGen summary statistics you will need to fill the online form at this link. You will then receive an email containing the detailed instructions for downloading the data.
Release 11 contains
When using these results in publications, please remember to:
1) Acknowledge the FinnGen study. You can use the following text:
“We want to acknowledge the participants and investigators of the FinnGen study”
2) Cite our latest publication:
Kurki M.I., et al. FinnGen provides genetic insights from a well-phenotyped isolated population. Nature 2023 Jan;613(7944):508-518. doi: 10.1038/s41586-022-05473-8. Epub 2023 Jan 18.
Furthermore, if possible, include "FinnGen" as a keyword for your publication.
If you want to cite this website, use the following citation:
The manifest file with the link to all the downloadable summary stats is available at:
File naming pattern and file structure
GWAS summary statistics (tab-delimited, bgzipped, genome build 38, tabix index files included) are named as {endpoint}.gz
. For example, endpoint I9_CHD
has I9_CHD.gz
and I9_CHD.gz.tbi
.
To learn more about the methods used, see section GWAS.
The {endpoint}.gz
have the following structure:
Two fine-mapping methods were used:
Fine-mapping results are tab-delimited and bgzipped.
SuSiE results have the following filename pattern:
{endpoint}.SUSIE.cred.bgz
{endpoint}.SUSIE.cred_99.bgz
{endpoint}.SUSIE.snp.bgz
FINEMAP results have the following filename pattern:
{endpoint}.FINEMAP.config.bgz
{endpoint}.FINEMAP.region.bgz
{endpoint}.FINEMAP.snp.bgz
To learn more about the methods used, see section Fine-mapping.
{endpoint}.SUSIE.cred.bgz
contain credible set summaries from SuSiE fine-mapping for all genome-wide significant regions. {endpoint}.SUSIE.cred_99.bgz
contain the 99% credible set summaries while the default is 95%. They have the following structure:
{endpoint}.SUSIE.snp.bgz
contain variant summaries with credible set information and have the following structure:
{endpoint}.FINEMAP.config.bgz
contain summary fine-mapping variant configurations from FINEMAP method and have the following structure:
{endpoint}.FINEMAP.region.bgz
contain summary statistics on number of independent signals in each region and have the following structure:
{endpoint}.FINEMAP.snp.bgz
has summary statistics of variants and into what credible set they may belong to. Columns:
Linkage disequilibrium (LD) was estimated from SISu v4.2 for each chromosome. Use the tool LDstore (v1.1) for further usage of the bcor files.
ldstore --bcor FG_LD_chr1.bcor --incl-range 20000000-50000000 --table output_file_name.table
To learn more about the methods used, see section LD estimation.
The variant annotation has measures (HWE
, INFO
, ...) listed per batch.
Genotype imputation was done with the population-specific .
The reference panel variant call set was produced with the GATK HaplotypeCaller algorithm by following GATK best practices for variant calling.
Genotype-, sample- and variant-wise QC was carried out iteratively by using the and the resulting high-quality WGS data for 8,554 individuals were phased with as described in the previous section.
Genotype imputation was carried out by using the population-specific SISu v4.2 imputation reference panel with (version 27Jan18.7e1) as described in the following protocol: .
Post-imputation quality control involved checking the expected conformity of the imputation INFO-value distribution, MAF differences between the target dataset and the imputation reference panel and checking chromosomal continuity of the imputed genotype calls.
v4.2 consists of 8,554 WGS of Finnish individuals from 5 research cohorts from:
METSIM (PIs Markku Laakso and Mike Boehnke)
FINRISK (PI Pekka Jousilahti)
Corogene (PI Juha Sinisalo)
Biobank of Eastern Finland (PI Arto Mannermaa)
Finnish EUFAM Dyslipidemia Study (PIs Marja-Riitta Taskinen and Samuli Ripatti)
High-coverage (25x) WGS data used to develop the SISu v4.2 reference panel were generated at the McDonnell Genome Institute at Washington University (PIs Ira Hall and Nathan Stitziel).
Column name | Description |
---|---|
Column name | Description |
---|---|
Column name | Description |
---|---|
Column name | Description |
---|---|
Column name
Description
#chrom
chromosome on build GRCh38 (1-23
)
pos
position in base pairs on build GRCh38
ref
reference allele
alt
alternative allele (effect allele)
rsids
variant identifier
nearest_genes
nearest gene(s) (comma separated) from variant
pval
p-value from regenie
mlogp
-log10(p-value)
beta
effect size (log(OR) scale) estimated with regenie for the alternative allele
sebeta
standard error of effect size estimated with regenie
af_alt
alternative (effect) allele frequency
af_alt_cases
alternative (effect) allele frequency among cases
af_alt_controls
alternative (effect) allele frequency among controls
Column name
Description
trait
phenotype
region
region for which the fine-mapping was run
cs
running number for independent credible sets in a region
cs_log10bf
Log10 bayes factor of comparing the solution of this model (cs independent credible sets) to cs -1 credible sets
cs_avg_r2
Average correlation R2 between variants in the credible set
cs_min_r2
minimum r2 between variants in the credible set
low_purity
cs_size
how many snps does this credible set contain
Column name
Description
trait
endpoint name
region
chr:start-end
v
variant identifier
rsid
rs variant identifier
chromosome
chromosome on build GRCh38 (1-22, X
)
position
position in base pairs on build GRCh38
allele1
reference allele
allele2
alternative allele (effect allele)
maf
minor allele frequency
beta
effect size GWAS
se
standard error GWAS
p
p-value GWAS
mean
posterior expectation of true effect size
sd
posterior standard deviation of true effect size
prob
posterior probability of association
cs
identifier of 95% credible set (-1 = variant is not part of credible set)
lead_r2
r2 value to a lead variant (the one with maximum PIP) in a credible set
alphax
posterior inclusion probability for the x-th single effect (x := 1..L where L is the number of single effects (causal variants) specified; default: L = 10)
Column name
Description
trait
phenotype
region
region for which the fine-mapping was run
rank
rank of this configuration within a region
config
causal variants in this configuration
prob
probability across all n independent signal configurations
log10bf
log10 bayes factor for this configuration
odds
odds of this configuration
k
how many independent signals in this configuration
prob_norm_k
probability of this configuration within k independent signals solution
h2
snp heritability of this solution
h2_0.95CI
95% confidence interval limits of snp heritability of this solution
mean
marginalized shrinkage estimates of the posterior effect size mean
sd
marginalized shrinkage estimates of the posterior effect standard deviation
Column name
Description
trait
phenotype
region
region for which the fine-mapping was run
h2g
heritability of this region
h2g_sd
standard deviation of snp heritability of this region
h2g_lower95
lower limit of 95% CI for snp heritability
h2g_upper95
upper limit of 95% CI for snp heritability
log10bf
log bayes factor compared against null (no signals in the region)
prob_xSNP
columns for probabilities of different number of independent signals
expectedvalue
expectation (average) of the number of signals
Column name
Description
trait
phenotype
region
region for which the fine-mapping was run
v
variant
index
running index
rsid
rs variant identifier
chromosome
chromosome
position
position
allele1
reference allele
allele2
alternative allele
maf
alternative allele frequency
beta
original marginal effect size
se
original standard error
z
original zscore
prob
post inclusion probability
log10bf
log10 bayes factor
mean
marginalized shrinkage estimates of the posterior effect size mean
sd
marginalized shrinkage estimates of the posterior effect standard deviation
mean_incl
conditional estimates of the posterior effect size mean
sd_incl
conditional estimates of the posterior effect size standard deviation
p
original p-value
csx
credible set index for given number of causal variants x
This is a description of the quality control procedures applied before running the GWAS.
The PCA for population structure has been run in the following way:
The sisu version 4.2 imputation panel is pruned iteratively, until a target number of SNPs is reached:
9,641,808 starting variants: only variants with a minimum info score of 0.9 in all batches are kept.
The script starts with [500.0, 50.0, 0.9] params in plink (window,step,r2). It then decreases 0.05 in r2 iteratively pruning the imputation panel until the threshold of 200,000 snps is reached. Once the SNP count falls under 200,000 the closest pruning is returned.
If the higher r2 is closer, 200,000 snps are randomly selected, else the last pruned snps are returned.
Plink flags used: --snps-only --chr 1-22 --max-alleles 2 --maf 0.01 .
For this run 180,032 snps are returned.
Then, FinnGen data was merged with the 1k genome project (1kgp) data, using the variants mentioned above. A round of PCA was performed and a bayesian algorithm was used to spot outliers. This process got rid of 17,133 FinnGen samples. The figure below shows the scatter plots for the first 3 PCs. Outliers, in green, are separated from the FinnGen red cluster.
While the method automatically detected as being outliers the 1kg samples with non European and southern European ancestries, it did not manage to exclude some samples with Western European origins. Since the signal from these samples would have been too small to allow a second round to be performed without detecting substructures of the Finnish population, another approach was used. The FinnGen samples that survived the first round were used to compute another PCA. The EUR and FIN 1kg samples were then projected onto the space generated by the first 3 PCs. Then, the centroid of each cluster was calculated and used to calculate the squared mahalanobis distance of each FinnGen sample to each of the centroids. Being the squared distance a sum of squared variables (with unitary variance, due to the mahalanobis distance), we could see it as a sum of 3 independent squared variables. This allowed us to map the squared distance into a probability (chi squared with 3 degrees of freedom). Therefore, for each cluster, a probability of being part of it was computed. Then, a threshold of 0.95 was used to exclude FinnGen samples whose relative chance of being part of the Finnish cluster was below the level. This method produced another 22 outliers. The figure below shows the first three principal components.
FIN 1kg samples are in purple, while EUR 1kgp samples are in Blue. Samples in green are FinnGen samples who are flagged as being non Finnish, while red ones are considered Finnish.
Then all pairs of FinnGen samples up to second degree were returned. The figure below shows the distribution of kinship values.
Then, the previously defined “non Finnish” samples were excluded and 2 algorithms were used to return a unique subset of unrelated samples:
one called greedy would continuously remove the highest degree node from the network of relations, until no more links are left in the network.
one called native, based on a native implementation of python’s networkx package, performed on each subgraph of the network.
The largest independent set of either algorithm would be used to keep those sample, while flagging the others as “outliers” for the final PCA.
Then, the subset of outliers who also belong to the set of duplicates/twins was identified.
To compute the final step the Finngen samples were ultimately separated in three groups:
277,053 inliers: unrelated samples with Finnish ancestry.
176,844 outliers: non duplicate samples with Finnish ancestries, but who are also related to the inliers.
19,784 rejected samples: either of non Finnish ancestry or are twins/duplicates with relations to other samples.
Finally, the PCA for the inliers was calculated, and then outliers were projected on the same PC space, allowing to calculate covariates for a total of 453,897 samples.
Of the 453,897 non-duplicate population inlier samples from PCA, we excluded 136 samples from analysis because of missing minimum phenotype data, and 28 samples because of failing sex check with F thresholds of 0.4 and 0.7. A total of 453,733 samples were used for core analysis. There are 254,618 females and 199,115 males among these samples.
Documentation from the original developers of the algorithm can be found here: http://www.well.ox.ac.uk/~spencer/Aberrant/aberrant-manu.
We used two state-of-the-art methods, FINEMAP (Benner, C. et al., 2016; Benner, C. et al., 2018) and SuSiE (Wang, G. et al., 2020) to fine-map genome-wide significant loci in FinnGen endpoints.
Briefly, there are three main steps:
For each genome-wide significant locus (default configuration: P < 5e-8), we define a fine-mapping region by taking a 3 Mb window around a lead variant (and merge regions if they overlap). If a merged window exceeds 10MB, we iteratively shrink the window by 10%, until the merged window fits into 10MB or is split into merged windows that each fit into 10MB. We preprocess an input GWAS summary statistics into separate files per region for the following steps.
We compute in-sample dosage LD using LDstore2 for each fine-mapping region.
With the inputs of summary statistics and in-sample LD from the steps 1-2, we conduct fine-mapping using FINEMAP and SuSiE with the maximum number of causal variants in a locus L = 10.
The "Credible Sets"-table on a phenotype page in the R11 PheWeb browser shows the SuSiE-fine-mapped credible sets of that phenotype. The variant shown per credible set is the maximum PIP (posterior inclusion probability) variant of that credible set. In addition to the causal variants, variants that were in sufficient LD (Pearson r^2 > 0.05), had a small enough p-value (pval < 0.01), and were close enough to the lead variant (distance to lead variant < 1.5 megabases) were clumped together with the credible set. Variants have been compared against GWAS Catalog and annotated. The LD grouping, annotation and GWAS Catalog comparison were done using the autoreporting pipeline.
The columns of the table are explained below:
Gene-based burden test results of loss of function variants (LoFs).
Loss of function (LoF) variants were generated from vcf files with VEP (). LoF variants are defined as having consequences in the list [frameshift_variant,splice_donor_variant,stop_gained,splice_acceptor_variant]. Also, a max_maf (0.01) and minimum info score (0.8) filters are applied. This leaves 3,737 genes that can be used for the association tests.
We used all 2,444 core binary phenotypes in the analyses.
We used as inputs the nulls already calculated for
Tests are performed with regenie --step2 in burden mode using a max mask (i.e. using the maximum number of ALT alleles across sites)
The files were created using from the Finnish panel v4.2.
The panel has been divided per chromosome. For example, to use the LD information in the first chromosome, FG_LD_chr1.bcor
would be the file to use.
number of samples: 3775
window size: 1500 kb
accuracy: low
number of threads: 96
LD threshold to include correlations: 0.05
can be downloaded via:
And an example to extract variant range 20 Mb - 50 Mb from chromosome 7 is as follows:
It is not preferred to use these LD estimate files for e.g. fine-mapping, since many of the fine-mapping methods (e.g. SuSiE) require in-sample LD information for good results!
We used regenie for release 11. Regenie's main advantages are fast leave-one-chromosome-out relatedness calculation which avoids proximal contamination, and use of an approximate Firth test which gives more reliable effect size estimates for rare variants.
We used regenie version 2.2.4.
Links:
We analyzed:
2,447 endpoints
2,444 binary endpoints
3 quantitative endpoints (HEIGHT_IRN, WEIGHT_IRN, BMI_IRN)
453,733 samples
254,618 females
199,115 males
21,311,942 variants
We included the following covariates in the model: sex, age, 10 PCs, Finngen chip version 1 or 2 , and legacy genotyping batch.
For matters related to this documentation, send us an email to finngen-info@helsinki.fi.
for the latest updates on the project as well as additional background information please consider visiting the study website or follow FinnGen on twitter .
If you want to host FinnGen summary statistics on your website, please get in contact with us at: humgen-servicedesk@helsinki.fi.
The HLA data was imputed from R11 genotype data, using HIBAG models created by Jarmo Ritari from the Finnish Blood Bank. More information can be found in the repository:
as well as in the publication:
Ritari J, Hyvä rinen K, Clancy J, FinnGen, Partanen J, Koskela S. Increasing accuracy of HLA imputation by a population-specific reference panel in a Finngen biobank cohort. NAR Genomics and Bioinformatics, Volume 2, Issue 2, June 2020, lqaa030,
Genotype data was constructed from the dosage data using PLINK 2.
A snp-stats report was generated with
Association testing was performed using Regenie 2.2.4. Same settings were used as in the core GWAS analysis. See for more information.
A summary was created from the regenie summary statistic outputs. This summary contains the most significant variant (by p-value) for each phenotype. Pheweb links to phenotype and gene pages have been added as additional columns.
The disease endpoints were defined using nationwide registries:
We harmonized over the International Classification of Diseases (ICD) revisions 8, 9 and 10, cancer-specific ICD-O-3, (NOMESCO) procedure codes, Finnish-specific Social Insurance Institute (KELA) drug reimbursement codes and ATC-codes.
These registries spanning decades were electronically linked to the cohort baseline data using the unique national personal identification numbers assigned to all Finnish citizens and residents.
A full list of FinnGen endpoints is for release 11.
The endpoints with fewer than 50 cases, and developmental “helper” endpoints were excluded from the final PheWas (“OMIT” tag in the endpoint definition file).
We included 2,447 endpoints in the analysis, which consisted of 2,444 binary endpoints and 3 quantitative endpoints (HEIGHT_IRN, WEIGHT_IRN, BMI_IRN). Endpoints with less than 50 cases among the 453,733 samples were excluded, as well as endpoints labeled with an OMIT tag in the endpoint definition file.
The quantitative endpoints HEIGHT and WEIGHT were acquired from minimum phenotype data. After that, phenotype BMI was formed from them, and all of them were inverse normal transformed.
7 endpoints did not progress past step1 in regenie pipeline due to convergence issues, and were discarded. The endpoints are:
For regenie step 1 LOCO prediction computation for each endpoint, we used age, sex, 10 PCs, Finngen 1 or 2 chip or legacy genotyping batch as covariates. For sex-specific phenotypes, sample sex was left out from the covariates. We excluded covariates that had less than 10 cases.
For calculating genetic relatedness in regenie step 1, we included variants 1) imputed with an INFO score > 0.95 in all batches and 2) > 97 % non-missing genotypes and 3) MAF > 1 %. The remaining variants were LD pruned with a 1.5Mb window and r2 threshold of 0.2. This resulted in a set of 215,152 well-imputed not rare variants for relatedness calculation.
We used a genotype block size of 1,000 in regenie step 1.
We ran association tests with regenie for each of the 2,440 endpoints for each variant with a minimum allele count of 5 among each phenotype’s cases and controls. We used the approximate Firth test for variants with an initial p-value of less than 0.01 and computed the standard error based on effect size and likelihood ratio test p-value (regenie options --firth --approx --pThresh 0.01 --firth-se).
(Risteys = intersection in Finnish) allows browsing of the FinnGen data at the phenotype level, including endpoint definitions, statistics about number of individuals, gender distribution, and longitudinal relationships. Please also note the R11 specific page
Column name
Explanation
top PIP variant
variant with largest PIP int he credible set. Click the arrow to the left of the variant to show the credible set variants.
CS quality
This column shows whether the credible set is well-formed. a 'true' value means that the credible set is likely trustworthy, and a 'false' value means that the credible set is likely not trustworthy.
chromosome
The chromosome in which the credible set lies.
position
The position of the lead variant
p-value
p-value of the top PIP variant.
-log10(p)
-log10(p-value)
effect size (beta)
effect size of the top PIP variant.
Finnish Enrichment
Finnish enrichment of the top PIP variant.
Alternate allele frequency
alternate allele frequency of the top PIP variant.
Lead Variant Gene
A probable gene of the top PIP variant.
# coding in cs
number of coding variants in the credible set. Hover over the number to see the variant, the consequence, and the correlation (pearsonr squared) to the lead variant.
# credible variants
number of variants in the credible set.
Credible set bayes factor (log10)
The bayes factor related to the credible set.
CS matching Traits
Number of matches found in GWAS Catalog for the credible set variants. Hover over the number to see the trait, as well as the associated variant's LD (pearsonr squared) to the lead variant.
LD Partner Traits
Number of matches found in GWAS Catalog to the group of credible variants and variants in LD with the top PIP variant.Hover over the numbr to see the trait, as well as the associated variant's LD (pearsonr squared) to the lead variant.
Timeline for releases:
[1] samples used for PheWAS.
Release
Date release to partners
Date release to public
Total sample size [1]
R2
Q4 2018 (Nov)
Q1 2020
96,499
R3
Q2 2019 (May)
Q2 2020
135,638
R4
Q4 2019 (Oct)
Q4 2020
176,899
R5
Q2 2020 (March)
Q2 2021
218,792
R6
Q3 2020
Q1 2022
260,405
R7
Q2 2021
Q2 2022
309,154
R8
Q3 2021
Q4 2022
342,499
R9
Q1 2022
Q2 2023
377,277
R10
Q3 2022
Q4 2023
412,181
R11
Q1 2023
Q2 2024
453,733
R12
Q3 2023
~Q3 2024
~500,000
FinnGen individuals were genotyped with Illumina and Affymetrix chip arrays (Illumina Inc., San Diego, and Thermo Fisher Scientific, Santa Clara, CA, USA).
Chip genotype data were imputed using the population-specific SISu v4.2 imputation reference panel of 8,554 whole genomes.
Merged imputed genotype data is composed of 116 data sets that include samples from multiple cohorts.
Total number of individuals: 473,681
Total number of variants (merged set): 21,311,942
Reference assembly: GRCh38/hg38
FinnGen research project is a public-private partnership combining genotype data from Finnish biobanks and digital health record data from Finnish health registries. FinnGen provides a unique opportunity to study genetic variation in relation to disease trajectories in an isolated population.
FinnGen is a growing project, aiming at 500,000 individuals in the end of 2023.
FinnGen results are subjected to one year embargo and, after that, available to the larger scientific community via the Pheweb browser or through data download.