I am working on a GWAS data. While finding association for height phenotype, I find a gene BBS (bardet beidl syndrome, a autosomal recessive disorder which effects height) gene getting associated with height trait. The population on which I am working on has high rate of consanguineous marriages. I would like to check whether this marriage pattern is something to do with this gene or not by ROH or IBD analysis. However, I am in a bit of confusion whether to do ROH or IBD as it is a autosomal recessive disorder.
I will be greatful if somebody suggest me which analysis is right in this context?