Oculocutaneous albinism (OCA) is a rare and heterogeneous disorder characterized by hypopigmentation of the skin, hair and eyes. Thirty OCA type 6 (OCA6) patients with 24 mutations in SLC24A5 have been reported across various populations; however, only one patient has been identified in a Chinese population. This study identifies two novel SLC24A5 frame-shift variants in two unrelated Chinese patients and both are predicted to be pathogenic by American College of Medical Genetics guidelines. The genotypes and phenotypes of all three Chinese OCA6 patients are unique compared with those identified in other populations. All of the mutations identified to date in Chinese OCA6 patients are predicted to be non-functional, a finding that is useful in guiding genetic diagnosis and counseling for OCA6 in China.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1111/1346-8138.15065 | DOI Listing |
Ophthalmic Genet
February 2023
Pediatric Ophthalmology & Ocular Genetics, C-MER (Shenzhen) Dennis Lam Eye Hospital, Shenzhen, China.
Background: Oculocutaneous albinism (OCA) could be either non-syndromic or syndromic. There are significant challenges in clinically recognizing and differentiating Hermansky-Pudlak syndrome (HPS) from non-syndromic OCA.
Materials And Methods: In a prospective consecutive case series, 63 patients (less than 18 years old) with a molecular genetic diagnosis of albinism (except ), Ocular albinism (OA) and Hermansky-Pudlak syndrome seen over a 3-year period were evaluated and analyzed.
Pigment Cell Melanoma Res
March 2022
Department of Dermatology, Yamagata University Faculty of Medicine, Yamagata, Japan.
Pigment Cell Melanoma Res
July 2020
Department of Otorhinolaryngology Head and Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, USA.
Skin pigmentation is a highly heterogeneous trait with diverse consequences worldwide. SLC24A5, encoding a potent K -dependent Na /Ca exchanger, is among the known color-coding genes that participate in melanogenesis by maintaining pH in melanosomes. Deficient SLC24A5 activity results in oculocutaneous albinism (OCA) type 6 in humans.
View Article and Find Full Text PDFJ Dermatol
November 2019
Department of Dermatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
J Cell Sci
July 2019
Beijing Key Laboratory for Genetics of Birth Defects, Beijing Pediatric Research Institute; MOE Key Laboratory of Major Diseases in Children; Genetics and Birth Defects Control Center, National Center for Children's Health; Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
Oculocutaneous albinism (OCA) is a heterogeneous and autosomal recessive hypopigmentation disorder, which is caused by mutations of genes involved in pigment biosynthesis or melanosome biogenesis. We have previously identified (also known as ) as a causative gene for OCA type 6 (OCA6). However, the pathogenesis of OCA6 is unknown.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!