<unk>  syndrome is a rare condition with only less than 100 patients in literature worldwide as of 2014 with only 2 patients diagnosed in adulthood. The prevalence of the syndrome is less than one per 100,000 births. The sex ratio of male to female patients is about 1:2, with no familial or racial predisposition has been found.
Caudal duplication
Isodisomy
Robertsonian translocation
Genomic imprinting
Bromism
Trisomy
Germline mosaicism
Uniparental disomy