A recent well-designed American trial asked women with PCOS and obesity to take either placebo or GLP-1 agonist. 1/3 of participants were African-American and 2/3 were Caucasian. Most women had a goal of pregnancy.
After 32 weeks, the women were compared for differences in weight loss, menses, and hormones.

Links and study details can be found at www.yourfertilitypharmacist.com
The differences were significant in many ways.