Extended variant information file. A text file with no header line, and one line per variant with the following six fields: Chromosome code Variant identifier Base-pair coordinate Allele 1 Allele 2 Example: 16 16:60686_C_A 60686 60686 C A Reference: https://www.cog-genomics.org/plink/1.9/formats

(PLINK binary biallelic genotype table). Primary representation of genotype calls at biallelic variants. Must be accompanied by .bim and .fam files. Do not confuse this with the UCSC Genome Browser's BED format, which is totally different. Reference: https://www.cog-genomics.org/plink/1.9/formats

(PLINK sample information file).Sample information file accompanying a .bed binary genotype table.A text file with no header line, and one line per sample with the following six fields: Family ID Within-family ID ('IID'; cannot be '0') Within-family ID of father ('0' if father isn't in dataset) Within-family ID of mother ('0' if mother isn't in dataset) Sex code ('1' = male, '2' = female, '0' = unknown) Phenotype value ('1' = control, '2' = case, '-9'/'0'/non-numeric = missing data if case/control) Example: family_1 sample_1 0 0 0 1 Reference: https://www.cog-genomics.org/plink/1.9/formats