title: Age matters--thoughts on a grading system for ABCA4 mutations.
authors.forename: Birgit
authors.initials: B
authors.lastname: Lorenz
authors.forename: Markus N
authors.initials: MN
authors.lastname: Preising
mesh_terms: D018528:ATP-Binding Cassette Transporters / Q000235:genetics*; D000367:Age Factors; D006801:Humans; D009154:Mutation; D010641:Phenotype; D012162:Retinal Degeneration / Q000145:classification / Q000175:diagnosis* / Q000235:genetics*; D012374:Rod Cell Outer Segment / Q000473:pathology*
chemical_list: C056475:ABCA4 protein, human; D018528:ATP-Binding Cassette Transporters