A Candidate Gene Association Study Identifies DAPL1 as a Female-Specific Susceptibility Locus for Age-Related Macular Degeneration (AMD)

Grassmann, Felix and Friedrich, Ulrike and Fauser, Sascha and Schick, Tina and Milenkovic, Andrea and Schulz, Heidi L. and von Strachwitz, Claudia N. and Bettecken, Thomas and Lichtner, Peter and Meitinger, Thomas and Arend, Nicole and Wolf, Armin and Haritoglou, Christos and Rudolph, Guenther and Chakravarthy, Usha and Silvestri, Giuliana and McKay, Gareth J. and Freitag-Wolf, Sandra and Krawczak, Michael and Smith, R. Theodore and Merriam, John C. and Merriam, Joanna E. and Allikmets, Rando and Heid, Iris M. and Weber, Bernhard H. F. (2015) A Candidate Gene Association Study Identifies DAPL1 as a Female-Specific Susceptibility Locus for Age-Related Macular Degeneration (AMD). NEUROMOLECULAR MEDICINE, 17 (2). pp. 111-120. ISSN 1535-1084, 1559-1174

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Abstract

Age-related macular degeneration (AMD) is the leading cause of blindness among white caucasians over the age of 50 years with a prevalence rate expected to increase markedly with an anticipated increase in the life span of the world population. To further expand our knowledge of the genetic architecture of the disease, we pursued a candidate gene approach assessing 25 genes and a total of 109 variants. Of these, synonymous single nucleotide polymorphism (SNP) rs17810398 located in death-associated protein-like 1 (DAPL1) was found to be associated with AMD in a joint analysis of 3,229 cases and 2,835 controls from five studies [combined P (ADJ) = 1.15 x 10(-6), OR 1.332 (1.187-1.496)]. This association was characterized by a highly significant sex difference (P (diff) = 0.0032) in that it was clearly confined to females with genome-wide significance [P (ADJ) = 2.62 x 10(-8), OR 1.541 (1.324-1.796); males: P (ADJ) = 0.382, OR 1.084 (0.905-1.298)]. By targeted resequencing of risk and non-risk associated haplotypes in the DAPL1 locus, we identified additional potentially functional risk variants, namely a common 897-bp deletion and a SNP predicted to affect a putative binding site of an exonic splicing enhancer. We show that the risk haplotype correlates with a reduced retinal transcript level of two, less frequent, non-canonical DAPL1 isoforms. DAPL1 plays a role in epithelial differentiation and may be involved in apoptotic processes thereby suggesting a possible novel pathway in AMD pathogenesis.

Item Type: Article
Uncontrolled Keywords: GENOME-WIDE ASSOCIATION; QUANTITATIVE TRAITS; RISK; DISEASE; PROTEIN; STAGE; SNP; Age-related macular degeneration; Death-associated protein-like 1; DAPL1; Canonical DAPL1 isoforms; Genetic association study
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Humangenetik
Medicine > Institut für Epidemiologie und Präventivmedizin > Lehrstuhl für Genetische Epidemiologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 15 Jul 2019 08:25
Last Modified: 15 Jul 2019 08:25
URI: https://pred.uni-regensburg.de/id/eprint/5469

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