The heterogeneity of Polycystic ovarian syndrome is actually quite intriguing. Environmental and familial factors contribute to this condition. If you try to connect the most sound etiology/pathogenesis with the possible cause, youll find that the CYP11a gene which is involved in steroidogenesis.
There is an article that discusses this in detail:
I'm studying the LH gene and it's receptor which have a role in the clinical features of PCOS.
I'm going to attach a systematic review about genetics of PCOS later because it's in my laptop covering different genetics mutations also you can search about GWAS on PCOS.