Clinical diagnosis of genetic or acquired lipodystrophy Supportive data: 1) Presence of biallelic known disease-causing variants in the genes for autosomal recessive lipodystrophy syndromes; 2) Presence of a known (or de novo loss of function) disease-causing variant in the genes for autosomal dominant lipodystrophy syndromes; or 3) Clinical supportive data based on morphological criteria together with metabolic abnormalities.