I'm interested in HLA imputation results from UK biobank (which was created by HLA*IMP 2 algorithm) and I have registered to have the access of HLA imputation values (field 22182 https://biobank.ctsu.ox.ac.uk/crystal/field.cgi?id=22182). However, these values are not annotated and I am unable to interpret results despite a bunch of values just like example data (https://biobank.ctsu.ox.ac.uk/crystal/examples/eg_hla_impute.dat).
Have anyone analyzed HLA imputation values from UK biobank before? How do you interpret the results (and if possible, how to compare HLA allele frequency in interested phenotype, is chi-square with FDR adjustment enough). Any suggestion is appreciated.