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  • Title: Early onset vitreous amyloidosis in familial amyloidotic polyneuropathy with a transthyretin Glu54Gly mutation is associated with elevated vitreous VEGF.
    Author: O'Hearn TM, Fawzi A, He S, Rao NA, Lim JI.
    Journal: Br J Ophthalmol; 2007 Dec; 91(12):1607-9. PubMed ID: 17522146.
    Abstract:
    AIM: To report the early vitreous involvement in a rare familial amyloidotic polyneuropathy (FAP) mutation and associated vitreous vascular endothelial growth factor (VEGF) levels. DESIGN: Observational case series. METHODS: Review of clinical, pathological, photographic, and angiographic records of two FAP siblings with severe vitreous involvement. Laboratory ELISA analysis of vitreous samples for VEGF, and DNA sequence analysis of peripheral blood for transthyretin (TTR) mutational analysis. RESULTS: Two patients underwent 25-gauge vitrectomy in three eyes with marked improvement of visual acuity. Neovascularisation seen intraoperatively responded to endolaser. Analysis of vitrectomy samples for VEGF showed raised levels in all three specimens. Mutational analysis revealed an isolated Glu54Gly mutation in the transthyretin gene. CONCLUSIONS: Early involvement of the vitreous occurs in a rare transthyretin mutation of FAP, with increased vitreous levels of VEGF.
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