Mulibrey Nanism, also known as mul, is related to peroxisomal disease and silver-russell syndrome 1. An important gene associated with Mulibrey Nanism is TRIM37 (Tripartite Motif Containing 37), and among its related pathways/superpathways are Class I MHC mediated antigen processing and presentation and Ether lipid biosynthesis. Affiliated tissues include liver and brain, and related phenotypes are macrocephaly and short stature