Early-onset Neovascular Inflammatory Vitreoretinopathy Due to Two de Novo CAPN5 Mutations in Chinese Patients: A Case Series

Ocul Immunol Inflamm. 2023 Nov;31(9):1777-1784. doi: 10.1080/09273948.2022.2110901. Epub 2022 Nov 11.

Abstract

Purpose: To explore the clinical and molecular characteristics, diagnosis, and treatment of early-onset autosomal dominant neovascular inflammatory vitreoretinopathy (ADNIV) in Chinese patients.

Methods: A retrospective, interventional case series was assembled from three ADNIV patients.

Results: The three ADNIV cases harbored de novo CAPN5 mutations (p.Arg289Trp and p.Leu73Val). The ages of onset ranged from 11 months to 2 years. All the cases presented with vitreous opacity and subretinal inflammatory exudations. During the postoperative follow-up, all the patients manifested with exaggerated postoperative inflammatory responses. An intravitreal Ozurdex injection could not effectively control ocular inflammation in ADNIV. Laser spots after panretinal photocoagulation were partly visible.

Conclusions: Two de novo CAPN5 mutations (p.Leu73Val and p.Arg289Trp) could cause early-onset ADNIV. Panretinal photocoagulation during vitrectomy and an intravitreal Ozurdex injection could not significantly stop the progression of subretinal exudations and ocular inflammation in early-onset ADNIV patients.

Keywords: ADNIV; CAPN5; Ozurdex; panretinal photocoagulation; uveitis.

MeSH terms

  • East Asian People*
  • Humans
  • Inflammation
  • Mutation
  • Retrospective Studies
  • Vitreoretinopathy, Proliferative* / diagnosis
  • Vitreoretinopathy, Proliferative* / genetics

Substances

  • Capn5 protein, human