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Genomics Precision Diagnostic > Ophthalmology Precision Panel > Retinitis Pigmentosa Precision Panel

Retinitis Pigmentosa Precision Panel

Retinitis Pigmentosa (RP) comprises a complex group of inherited dystrophies characterized by degeneration and dysfunction of the retina, affecting photoreceptor and pigment epithelial function.
Overview
Indication
Clinical Utility
Genes & Diseases
Methodology
References

Overview

  • Retinitis Pigmentosa (RP) comprises a complex group of inherited dystrophies characterized by degeneration and dysfunction of the retina, affecting photoreceptor and pigment epithelial function. RP can be an isolated finding or be part of a syndrome that can be inherited in a dominant, recessive or X-linked pattern. This disease presents as progressive loss of night and peripheral vision, leading to a constricted visual field and markedly diminished vision. The clinical presentation of these findings is highly variable, some patients being affected during childhood while others are asymptomatic well into adulthood. There is an increase in mortality rate due to psychiatric comorbidities.  

  • The Igenomix Retinitis Pigmentosa Precision Panel can be used to make an accurate and directed diagnosis as well as a differential diagnosis of blindness ultimately leading to a better management and prognosis of the disease. It provides a comprehensive analysis of the genes involved in this disease using next-generation sequencing (NGS) to fully understand the spectrum of relevant genes involved.

Indication

  • The Igenomix Retinitis Pigmentosa Precision Panel is indicated for those patients with a clinical suspicion or diagnosis with or without the following manifestations: 
    • Family history of RP  
    • Night blindness 
    • Progressive constriction of the visual field, usually peripheral 
    • Cataracts 
    • Sensation of sparking lights (photopsias) 
    • Headache 

Clinical Utility

The clinical utility of this panel is: 

  • The genetic and molecular confirmation for an accurate clinical diagnosis of a symptomatic patient.  
  • Early initiation of multidisciplinary treatment in the form of medical care with vitamin A and other antioxidants and surgical care for potential cataract extraction or retinal prosthesis.  
  • Risk assessment and genetic counselling of asymptomatic family members according to the mode of inheritance. 
  • Detect novel disease-causing genes and novel variant in disease-causing genes. 

Genes & Diseases

Methodology

References

See scientific referrals

Daiger, S. (2007). Perspective on Genes and Mutations Causing Retinitis Pigmentosa. Archives Of Ophthalmology, 125(2), 151. doi: 10.1001/archopht.125.2.151 

Hartong, D., Berson, E., & Dryja, T. (2006). Retinitis pigmentosa. The Lancet, 368(9549), 1795-1809. doi: 10.1016/s0140-6736(06)69740-7 

Dias MF, Joo K, Kemp JA, et al. Molecular genetics and emerging therapies for retinitis pigmentosa: Basic research and clinical perspectives. Prog Retin Eye Res 2018; 63:107. 

Tsang, S. H., & Sharma, T. (2018). Autosomal Dominant Retinitis Pigmentosa. Advances in experimental medicine and biology, 1085, 69–77. https://doi.org/10.1007/978-3-319-95046-4_15 

Hims, M. M., Diager, S. P., & Inglehearn, C. F. (2003). Retinitis pigmentosa: genes, proteins and prospects. Developments in ophthalmology, 37, 109–125. https://doi.org/10.1159/000072042 

Daiger, S. P., Bowne, S. J., & Sullivan, L. S. (2014). Genes and Mutations Causing Autosomal Dominant Retinitis Pigmentosa. Cold Spring Harbor perspectives in medicine, 5(10), a017129. https://doi.org/10.1101/cshperspect.a017129 

Na, K. H., Kim, H. J., Kim, K. H., Han, S., Kim, P., Hann, H. J., & Ahn, H. S. (2017). Prevalence, Age at Diagnosis, Mortality, and Cause of Death in Retinitis Pigmentosa in Korea-A Nationwide Population-based Study. American journal of ophthalmology, 176, 157–165. https://doi.org/10.1016/j.ajo.2017.01.014 

 

 

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