GPT and congenital generalized lipodystrophy: Abbreviations: BMI, body mass index; ALT, alanine aminotransferase; AST, aspartate aminotransferase; HDL, high-density lipoprotein; LDL, low-density lipoprotein; FPLD, familial partial lipodystrophy; CGL, congenital generalized lipodystrophy; TF-SMA, distance between transversalis facia and the superior mesenteric artery, representing mesenteric fat tissue thickness; TF-RR, the distance from the end of the right renal lower pole to the transversalis facia, representing retroperitoneal fat tissue thickness; NA, not applicable