Age-related macular degeneration. Clinical features in a large family and linkage to chromosome 1q.

نویسندگان

  • M L Klein
  • D W Schultz
  • A Edwards
  • T C Matise
  • K Rust
  • C B Berselli
  • K Trzupek
  • R G Weleber
  • J Ott
  • M K Wirtz
  • T S Acott
چکیده

OBJECTIVES To identify the chromosomal location of a disease-causing gene and to describe the clinical characteristics of a large family with age-related macular degeneration (ARMD). METHODS An ARMD pedigree was identified, and the disease state of family members was documented by stereoscopic fundus photography and was classified using a modified version of the Wisconsin Age-Related Maculopathy Grading System. A genome-wide screen at approximately 6-centimorgan spacing using a DNA-pooling strategy combined with shared-segment analysis was used to identify likely chromosomal regions. The entire family was then screened at each likely locus, and 1 positive locus was refined by screening with markers at an average density of 0.5 centimorgan and subjected to parametric linkage analysis. RESULTS In the 10 affected family members, ARMD was manifest by the presence of large, soft, confluent drusen accompanied by varying degrees of retinal pigment epithelial degeneration and/or geographic atrophy. Age-related macular degeneration segregated as an autosomal-dominant trait, with the disease locus mapping to chromosome 1q25-q31 between markers D1S466 and D1S413, with a multipoint lod score of 3.00. CONCLUSION Age-related macular degeneration localized to chromosome 1q25-q31 (gene symbol, ARMD1) as a dominant trait in a large family with a predominantly dry phenotype. CLINICAL RELEVANCE Identification of ARMD genes will facilitate early diagnosis and aid in understanding the molecular pathophysiological mechanisms of ARMD. This knowledge will contribute to the development of preventive and improved treatment strategies.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Age-related macular degeneration: a high-resolution genome scan for susceptibility loci in a population enriched for late-stage disease.

Age-related macular degeneration (AMD) is a complex multifactorial disease that affects the central region of the retina. AMD is clinically heterogeneous, leading to geographic atrophy (GA) and/or choroidal neovascularization (CNV) at advanced stages. Considerable data exists in support of a genetic predisposition for AMD. Recent linkage studies have provided evidence in favor of several AMD su...

متن کامل

Transpupilary thermotherapy of occult subfoveal choroidal neovascularization secondary to age related macular degeneration

 Abstract Background: Transpupillary thermotherapy is a new treatment for subfoveal choroidal neovascularization which needs further evaluation. This study was aimed to evaluate the efficacy of transpupillary thermotherapy on regression of occult subfoveal choroidal neovascularization with or without pigment epithelial detachment in patients with age-related macular degeneration. Methods: In a ...

متن کامل

North Carolina macular dystrophy (MCDR1) caused by a novel tandem duplication of the PRDM13 gene

PURPOSE To identify the underlying cause of disease in a large family with North Carolina macular dystrophy (NCMD). METHODS A large four-generation family (RFS355) with an autosomal dominant form of NCMD was ascertained. Family members underwent comprehensive visual function evaluations. Blood or saliva from six affected family members and three unaffected spouses was collected and DNA tested...

متن کامل

همراهی پلی‌مورفیسم p.Gly119Arg ژن CFI در مبتلایان به بیماری دژنراسیون ماکولای وابسته به سن در جمعیت ساکن در شهر تهران

Background: Age-related macular degeneration (AMD) is the leading cause of blindness in the developed world and is characterized by progressive degeneration of the retinal pigment epithelium and secondary photoreceptor loss, resulting in visual loss. Etiological research suggests that age related macular degeneration is a complex disease, caused by the interactions of several genetic and enviro...

متن کامل

مروری بر روش های کمک بینایی به منظور بهبود کیفیت زندگی بیماران مبتلا به دژنراسیون وابسته به سن ماکولا

Background and purpose: Age related macular degeneration is the most common cause of sever visual impairment and blindness among adults over the age of 65 years in developed countries. The purpose of this study was to review the literature on using low vision aids in age related macular degeneration and their effects on their quality of life. Materials and methods: A comprehensive search of ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Archives of ophthalmology

دوره 116 8  شماره 

صفحات  -

تاریخ انتشار 1998