Retinitis Pigmentosa, X-linked

X-linked Retinitis Pigmentosa (XLRP) affects 10-20% of families with retinitis pigmentosa. This particular form of RP is rather severe in that affected males show first symptoms, such as night blindness and lack of dark adaptation, already within the first decade of life. In the second decade, patients usually have a reduced visual field and visual acuity, followed by complete blindness by the third or fourth decade of life. Female carriers may also be affected with a milder form of disease with peripheral pigmentary changes in the retina.

Tests Available

Forms and Documents

Test Details

RP2
  • Confirmation of clinical diagnosis
  • Identification of female carriers for a mutation with a mild phenotype
  • Establish the mode of inheritance
  • Prenatal diagnosis in at risk pregnancies
  • Pre-symptomatic testing
  • Capillary Sequencing

Ordering

326
3 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL) | Buccal Swabs

Billing

81479x1
No
Yes
  • 743.53 Chorioretinal degeneration, congenital
  • 743.55 Congenital macular changes
  • 362.76 Dystrophies primarily involving the retinal pigment epithelium, Fundus flavimaculatus, Vitelliform dystrophy
  • 362.75 Other dystrophies
  • 743.56 Other retinal changes, congenital
  • 362.74 Pigmentary retinal dystrophy, Retinal dystrophy, albipunctate, Retinitis pigmentosa
* For price inquiries please email zebras@genedx.com

References

  1. Dandekar et al (2004) Br J Ophthalmol 88:528-532
  2. Prokisch et al., (2007) Investigative Ophthalmology & Visual Science 48:4012-4018
  3. Sharon et al. (2003) Am. J. Hum. Genet. 73:1131-1146
  4. Garcia-Hoyos et al., (2006) Investigative Ophthalmology & Visual Science 47:3777-3782
  5. Jin et al., (2006) Molecular Vision 12:1167-1174

Forms and Documents

Test Details

(GJC3), GCSH, GDF1, GDF3, GDF6, GFER, GJA1, GJA8, GJB2, GJB6, GJE1, GLB1, GLDC, GLIS2, GLIS3, GM2A, GMPPA
  • Molecular confirmation of a clinical diagnosis
  • To assist with decisions about treatment and management of individuals with retinal dystrophies
  • Testing of at-risk relatives for specific known variant(s) previously identified in an affected family member
  • Prenatal diagnosis for known familial pathogenic variant(s) in at-risk pregnancies
  • Next-Gen Sequencing

Ordering

J905
6 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL) | Buccal Swabs

Billing

81434x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Sahel et al. (2014) Cold Spring Harb Perspect Med 5 (2):a017111 (PMID: 25324231)
  2. Kocur et al. (2002) Br J Ophthalmol 86 (7):716-22 (PMID: 12084735);
  3. Ayuso et al. (2010) Genome Med 2 (5):34 (PMID: 20519033)
  4. Finger et al. (2011) Invest. Ophthalmol. Vis. Sci. 52 (7):4381-9 (PMID: 21447690)
  5. den Hollander et al. (2006) American Journal Of Human Genetics 79 (3):556-61 (PMID: 16909394)
  6. Braun et al. (2013) Human Molecular Genetics 22 (25):5136-45 (PMID: 23918662)
  7. Zernant et al. (2014) Hum. Mol. Genet. 23 (25):6797-806 (PMID: 25082829)
  8. Bauwens et al. (2015) Hum. Mutat. 36 (1):39-42 (PMID: 25346251)
  9. Schulz et al. (2017) Invest. Ophthalmol. Vis. Sci. 58 (1):394-403 (PMID: 28118664)
  10. Beryozkin et al. (2015) Sci Rep 5 :13187 (PMID: 26306921)
  11. Lee et al. (2015) Am. J. Ophthalmol. 160 (2):354-363.e9 (PMID: 25910913)
  12. de Castro-Miro et al. (2016) PLoS ONE 11 (12):e0168966 (PMID: 28005958)
  13. Haer-Wigman et al. (2017) Eur. J. Hum. Genet. 25 (5):591-599 (PMID: 28224992)
  14. Riera et al. (2017) Sci Rep 7 :42078 (PMID: 28181551)
  15. Carss et al. (2017) Am. J. Hum. Genet. 100 (1):75-90 (PMID: 28041643)
  16. Retterer et al. (2015) Genet. Med.: (PMID: 26633542)