The patient's presentation of early-onset obesity, hyperphagia, visual impairment, renal abnormalities, irregular menses, and neurodevelopmental delays, together with genetic support of a pathogenic BBS9 variant (c.1120C > T; p. Arg374∗), established the diagnosis of Bardet-Biedl Syndrome (BBS) as the unifying condition. This evidence concerns the gene BBS9 and obesity due to melanocortin 4 receptor deficiency.