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Worldwide carrier frequency and genetic prevalence of autosomal recessive inherited retinal diseases
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Worldwide carrier frequency and genetic prevalence of autosomal recessive inherited retinal diseases
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Worldwide carrier frequency and genetic prevalence of autosomal recessive inherited retinal diseases
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Journal Article
Worldwide carrier frequency and genetic prevalence of autosomal recessive inherited retinal diseases
2020
Overview
One of the major questions in human genetics is what percentage of individuals in the general population carry a disease-causing mutation. Based on publicly available information on genotypes from six main world populations, we created a database including data on 276,921 sequence variants, present within 187 genes associated with autosomal recessive (AR) inherited retinal diseases (IRDs). Assessment of these variants revealed that 10,044 were categorized as disease-causing mutations. We developed an algorithm to compute the gene-specific prevalence of disease, as well as the mutational burden in healthy subjects. We found that the genetic prevalence of AR-IRDs corresponds approximately to 1 case in 1,380 individuals, with 5.5 million people expected to be affected worldwide. In addition, we calculated that unaffected carriers ofmutations are numerous, ranging from 1 in 2.26 individuals in Europeans to 1 in 3.50 individuals in the Finnish population. Our analysis indicates that about 2.7 billion people worldwide (36% of the population) are healthy carriers of at least one mutation that can cause AR-IRD, a value that is probably the highest across any group of Mendelian conditions in humans.
Publisher
National Academy of Sciences
Subject
