“…The factor underlying the syndrome is the mutation of the LMX1B gene (MIM 602575) on chromosome 9q34 (Ghoumid et al, ; Sweeney, Fryer, Mountford, Green, & McIntosh, ). Although its clinical manifestations vary in frequency and severity, NPS is generally characterized by malformation of the nails and elbows, insufficient development or the absence of kneecaps, and exostosis of the iliac wings (iliac horns due to abnormal bone production; Bhor, Damdhar, Kokate, Salve, & Andhale, ). Moreover, ocular anomalies (i.e., glaucoma) and renal damage (i.e., nephropathy) are observed frequently, in approximately one in three cases (Bongers et al, ; Lemley, ; Lichter et al, ).…”