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CLINICAL CHARACTERISTICS AND NATURAL HISTORY OF RHO-ASSOCIATED RETINITIS PIGMENTOSA: A Long-Term Follow-Up Study

  • Xuan-Thanh-An Nguyen
  • , Mays Talib
  • , Caroline van Cauwenbergh
  • , Mary J. van Schooneveld
  • , Marta Fiocco
  • , Jan Wijnholds
  • , Jacoline B. ten Brink
  • , Ralph J. Florijn
  • , Nicoline E. Schalij-Delfos
  • , Gislin Dagnelie
  • , Maria M. van Genderen
  • , Elfride de Baere
  • , Magda A. Meester-Smoor
  • , Julie de Zaeytijd
  • , Irina Balikova
  • , Alberta A. Thiadens
  • , Carel B. Hoyng
  • , Caroline C. Klaver
  • , L. Ingeborgh van den Born
  • , Arthur A. Bergen
  • Bart P. Leroy, Camiel J. F. Boon
  • Leiden University Medical Center
  • Ghent University
  • Amsterdam UMC - University of Amsterdam
  • Leiden University
  • Johns Hopkins University
  • Bartiméus, Zeist, Netherlands
  • University Medical Center Utrecht
  • Erasmus MC
  • Radboud University Medical Center
  • The Rotterdam Eye Hospital
  • Netherlands Institute for Neuroscience
  • University of Pennsylvania

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

PURPOSE: To investigate the natural history of RHO-associated retinitis pigmentosa (RP). METHODS: A multicenter, medical chart review of 100 patients with autosomal dominant RHO-associated RP. RESULTS: Based on visual fields, time-to-event analysis revealed median ages of 52 and 79 years to reach low vision (central visual field <20°) and blindness (central visual field <10°), respectively. For the best-corrected visual acuity (BCVA), the median age to reach mild impairment (20/67 ≤ BCVA < 20/40) was 72 years, whereas this could not be computed for lower acuities. Disease progression was significantly faster in patients with a generalized RP phenotype (n = 75; 75%) than that in patients with a sector RP phenotype (n = 25; 25%), in terms of decline rates of the BCVA (P < 0.001) and V4e retinal seeing areas (P < 0.005). The foveal thickness of the photoreceptor-retinal pigment epithelium (PR + RPE) complex correlated significantly with BCVA (Spearman's ρ = 0.733; P < 0.001). CONCLUSION: Based on central visual fields, the optimal window of intervention for RHO-associated RP is before the 5th decade of life. Significant differences in disease progression are present between generalized and sector RP phenotypes. Our findings suggest that the PR + RPE complex is a potential surrogate endpoint for the BCVA in future studies.

Original languageEnglish
Pages (from-to)213-223
Number of pages11
JournalRetina (Philadelphia, Pa.)
Volume41
Issue number1
Early online date15 Apr 2020
DOIs
Publication statusPublished - 1 Jan 2021

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