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http://dx.doi.org/10.3345/kjp.2014.57.3.140

Lowe syndrome: a single center's experience in Korea  

Kim, Hyun-Kyung (Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Kim, Ja Hye (Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Kim, Yoo-Mi (Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Kim, Gu-Hwan (Department of Medical Genetics Center, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Lee, Beom Hee (Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Choi, Jin-Ho (Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Yoo, Han-Wook (Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine)
Publication Information
Clinical and Experimental Pediatrics / v.57, no.3, 2014 , pp. 140-148 More about this Journal
Abstract
Purpose: Lowe syndrome is a rare, X-linked recessive disorder caused by mutations in the OCRL gene. It involves multiple anatomic systems, particularly the eyes, central nervous system, and kidneys, and leads to profound growth failure and global developmental delay. This study evaluated the clinical and genetic characteristics of Korean patients with Lowe syndrome. Methods: The clinical findings and results of genetic studies were reviewed for 12 male patients diagnosed with Lowe syndrome at a single medical institution. Results: The mean age of the patients at presentation was 2.2 months (range, 0-4 months), although the diagnosis was delayed by a mean of 2.8 years (range, 0-9.7 years). The mean follow-up period was 9.0 years (range, 0.6-16.7 years). Nine mutations in OCRL were identified in 11 patients (92%), with three novel mutations. The main presentation was congenital cataract in both eyes necessitating early cataract removal in the 11 patients with impaired visual acuity. Profound short stature and developmental delay were observed in all patients, and seizures occurred in 50% of the patients. All patients suffered from proximal renal tubular dysfunction, and one patient developed chronic renal failure. Other manifestations included pathologic fracture (50%), cutaneous cysts (42%), and cryptorchidism (42%). However, there was no bleeding tendency, and none of the patients died during the study period. Conclusion: This study describes the clinical and genetic characteristics of Korean patients with Lowe syndrome. The observations are helpful for understanding the natural courses of Lowe syndrome and for appropriate genetic counseling.
Keywords
Oculocerebrorenal syndrome; Cataract; Developmental disabilities; Acidosis; Renal tubular;
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