LMX1B and mandibuloacral dysplasia: Other rare syndromal conditions are mitochondrial disorders (gene NA coding for nonprotein tRNA), Nail-patella syndrome (gene LMX1B coding for LIM homeobox transcription factor 1 beta), Schimke immunoosseous dysplasia (SMARCAL1 coding for SWI/SNF2-related, matrix-associated, actin-dependent regulator of chromatin, subfamily a-like 1), Mandibuloacral dysplasia (ZMPSTE24 gene coding for the zinc metalloproteinase STE 24), and Galloway-Mowat syndrome (gene GMSI coding for GMSI).