Marta Latasiewicz1, Christian Fontecilla2, Elena Millá2, Aurora Sánchez3. 1. Department of Ophthalmology, Hospital Clinic of Barcelona, Barcelona, Spain. Electronic address: mjlatasi@clinic.ub.es. 2. Department of Ophthalmology, Hospital Clinic of Barcelona, Barcelona, Spain. 3. Department of Biochemistry and Molecular Genetics, Hospital Clinic de Barcelona, Barcelona, Spain.
Abstract
OBJECTIVE: To analyze ocular involvement in patients diagnosed with Marfan syndrome (MFS), study their clinical findings and prognosis based on the type of FBN1 mutation, and evaluate possible genotype-phenotype correlations. DESIGN: Observational single-centre case series. PARTICIPANTS: Eleven patients diagnosed with MFS were included. All subjects met the Ghent criteria of MFS, the diagnosis was confirmed by genetic testing. METHODS: All subjects underwent a complete ophthalmologic examination. We evaluated clinical data, the incidence of ectopia lentis (EL), and other eye disorders. The association of ocular signs with the type of mutation was analyzed. RESULTS: Four of the 11 patients had EL, of which 3 developed secondary glaucoma, and 62.5% of the phakic patients had myopia. Other ocular abnormalities included strabismus, retinal tears, retinal detachment, and amblyopia. The encountered types of mutations were premature termination codon (PTC) in 7 patients, missense in 2 cases, 1 aberration of splicing, and 1 indel mutation. Two novel mutations were found. Of the patients with EL, 2 had a missense, 1 an indel, and 1 a nonsense mutation. CONCLUSIONS: Myopia was the most frequent ocular involvement. Patients with a PTC mutation revealed to have a smaller risk of EL; however, more studies are required to indicate the mechanism of the correlation.
OBJECTIVE: To analyze ocular involvement in patients diagnosed with Marfan syndrome (MFS), study their clinical findings and prognosis based on the type of FBN1 mutation, and evaluate possible genotype-phenotype correlations. DESIGN: Observational single-centre case series. PARTICIPANTS: Eleven patients diagnosed with MFS were included. All subjects met the Ghent criteria of MFS, the diagnosis was confirmed by genetic testing. METHODS: All subjects underwent a complete ophthalmologic examination. We evaluated clinical data, the incidence of ectopia lentis (EL), and other eye disorders. The association of ocular signs with the type of mutation was analyzed. RESULTS: Four of the 11 patients had EL, of which 3 developed secondary glaucoma, and 62.5% of the phakic patients had myopia. Other ocular abnormalities included strabismus, retinal tears, retinal detachment, and amblyopia. The encountered types of mutations were premature termination codon (PTC) in 7 patients, missense in 2 cases, 1 aberration of splicing, and 1 indel mutation. Two novel mutations were found. Of the patients with EL, 2 had a missense, 1 an indel, and 1 a nonsense mutation. CONCLUSIONS:Myopia was the most frequent ocular involvement. Patients with a PTC mutation revealed to have a smaller risk of EL; however, more studies are required to indicate the mechanism of the correlation.