ILAE GGE readme:
# Marker - this is the marker name
# Allele1 - the first allele for this marker in the first file where it occurs
# Allele2 - the second allele for this marker in the first file where it occurs
# Weight - the sum of the individual study weights (typically, N) for this marker
# Z-score - the combined z-statistic for this marker
# P-value - meta-analysis p-value
# Direction - summary of effect direction for each study (see below), with one '+' or '-' per study
# HetISq - I^2 statistic which measures heterogeneity on scale of 0-100%
# HetChiSq - chi-squared statistic in simple test of heterogeneity
# df - degrees of freedom for heterogeneity statistic
# HetPVal - P-value for heterogeneity statistic
# Order of cohorts in ÒdirectionÓ column:
# --> Input File 1 : ILM Collaboration
# --> Input File 2 : EPICURE
# --> Input File 3 : EPIGEN-London
# --> Input File 4 : EPIGEN-Brussels
# --> Input File 5 : Philadelphia.550.AA
# --> Input File 6 : Philadelphia.550.CAU
# --> Input File 7 : Philadelphia.OMNI.CAU
# --> Input File 8 : EPIGEN-Duke
? --> result not available in that cohort.