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Retinitis pigmentosa 20(RP20)

MedGen UID:
462436
•Concept ID:
C3151086
•
Disease or Syndrome
Synonyms: RP 20; RP20
 
Gene (location): RPE65 (1p31.3)
 
Monarch Initiative: MONDO:0013425
OMIM®: 613794

Definition

Any retinitis pigmentosa in which the cause of the disease is a mutation in the RPE65 gene. [from MONDO]

Clinical features

From HPO
Night blindness
MedGen UID:
10349
•Concept ID:
C0028077
•
Disease or Syndrome
Inability to see well at night or in poor light.
See: Feature record | Search on this feature
Nystagmus
MedGen UID:
45166
•Concept ID:
C0028738
•
Disease or Syndrome
Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.
See: Feature record | Search on this feature
Severely reduced visual acuity
MedGen UID:
226987
•Concept ID:
C1301509
•
Disease or Syndrome
Severe reduction of the ability to see. On the 6m visual acuity scale, severe reduction is defined as less than 6/60 but at least 3/60. On the 20ft visual acuity scale, severe reduction is defined as less than 20/200 but at least 20/400. On the decimal visual acuity scale, severe reduction is defined as less than 0.1 but at least 0.05.
See: Feature record | Search on this feature
Attenuation of retinal blood vessels
MedGen UID:
480605
•Concept ID:
C3278975
•
Finding
See: Feature record | Search on this feature
Visual impairment
MedGen UID:
777085
•Concept ID:
C3665347
•
Finding
Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.
See: Feature record | Search on this feature
Rod-cone dystrophy
MedGen UID:
1632921
•Concept ID:
C4551714
•
Disease or Syndrome
An inherited retinal disease subtype in which the rod photoreceptors appear to be more severely affected than the cone photoreceptors. Typical presentation is with nyctalopia (due to rod dysfunction) followed by loss of mid-peripheral field of vision, which gradually extends and leaves many patients with a small central island of vision due to the preservation of macular cones.
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Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  

Professional guidelines

PubMed

Bardet-Biedl syndrome: A clinical overview focusing on diagnosis, outcomes and best-practice management.
Shoemaker A
Diabetes Obes Metab 2024 Apr;26 Suppl 2:25-33. Epub 2024 Feb 21 doi: 10.1111/dom.15494. PMID: 38383825
Genetic treatment for autosomal dominant inherited retinal dystrophies: approaches, challenges and targeted genotypes.
Daich Varela M, Georgiadis A, Michaelides M
Br J Ophthalmol 2023 Sep;107(9):1223-1230. Epub 2022 Aug 29 doi: 10.1136/bjo-2022-321903. PMID: 36038193
Genetic Testing in Pediatric Ophthalmology.
Verma IC, Paliwal P, Singh K
Indian J Pediatr 2018 Mar;85(3):228-236. Epub 2017 Oct 2 doi: 10.1007/s12098-017-2453-7. PMID: 28971364

Recent clinical studies

Etiology

IMPG2-Related Maculopathy.
Birtel J, Caswell R, De Silva SR, Herrmann P, Rehman S, Lotery AJ, Mahroo OA, Michaelides M, Webster AR, MacLaren RE, Charbel Issa P
Am J Ophthalmol 2024 Feb;258:32-42. Epub 2023 Oct 6 doi: 10.1016/j.ajo.2023.10.002. PMID: 37806544
Genomic Landscape of Sporadic Retinitis Pigmentosa: Findings from 877 Spanish Cases.
Martin-Merida I, Avila-Fernandez A, Del Pozo-Valero M, Blanco-Kelly F, Zurita O, Perez-Carro R, Aguilera-Garcia D, Riveiro-Alvarez R, Arteche A, Trujillo-Tiebas MJ, Tahsin-Swafiri S, Rodriguez-Pinilla E, Lorda-Sanchez I, Garcia-Sandoval B, Corton M, Ayuso C
Ophthalmology 2019 Aug;126(8):1181-1188. Epub 2019 Mar 20 doi: 10.1016/j.ophtha.2019.03.018. PMID: 30902645
Ciliopathy: Usher Syndrome.
Tsang SH, Aycinena ARP, Sharma T
Adv Exp Med Biol 2018;1085:167-170. doi: 10.1007/978-3-319-95046-4_32. PMID: 30578505
Comprehensive Molecular Screening in Chinese Usher Syndrome Patients.
Sun T, Xu K, Ren Y, Xie Y, Zhang X, Tian L, Li Y
Invest Ophthalmol Vis Sci 2018 Mar 1;59(3):1229-1237. doi: 10.1167/iovs.17-23312. PMID: 29625443
Non-syndromic retinitis pigmentosa.
Verbakel SK, van Huet RAC, Boon CJF, den Hollander AI, Collin RWJ, Klaver CCW, Hoyng CB, Roepman R, Klevering BJ
Prog Retin Eye Res 2018 Sep;66:157-186. Epub 2018 Mar 27 doi: 10.1016/j.preteyeres.2018.03.005. PMID: 29597005

Diagnosis

IMPG2-Related Maculopathy.
Birtel J, Caswell R, De Silva SR, Herrmann P, Rehman S, Lotery AJ, Mahroo OA, Michaelides M, Webster AR, MacLaren RE, Charbel Issa P
Am J Ophthalmol 2024 Feb;258:32-42. Epub 2023 Oct 6 doi: 10.1016/j.ajo.2023.10.002. PMID: 37806544
Genomic Landscape of Sporadic Retinitis Pigmentosa: Findings from 877 Spanish Cases.
Martin-Merida I, Avila-Fernandez A, Del Pozo-Valero M, Blanco-Kelly F, Zurita O, Perez-Carro R, Aguilera-Garcia D, Riveiro-Alvarez R, Arteche A, Trujillo-Tiebas MJ, Tahsin-Swafiri S, Rodriguez-Pinilla E, Lorda-Sanchez I, Garcia-Sandoval B, Corton M, Ayuso C
Ophthalmology 2019 Aug;126(8):1181-1188. Epub 2019 Mar 20 doi: 10.1016/j.ophtha.2019.03.018. PMID: 30902645
Systematic evaluation of a targeted gene capture sequencing panel for molecular diagnosis of retinitis pigmentosa.
Huang H, Chen Y, Chen H, Ma Y, Chiang PW, Zhong J, Liu X, Asan, Wu J, Su Y, Li X, Deng J, Huang Y, Zhang X, Li Y, Fan N, Wang Y, Tang L, Shen J, Chen M, Zhang X, Te D, Banerjee S, Liu H, Qi M, Yi X
PLoS One 2018;13(4):e0185237. Epub 2018 Apr 11 doi: 10.1371/journal.pone.0185237. PMID: 29641573Free PMC Article
Comprehensive Molecular Screening in Chinese Usher Syndrome Patients.
Sun T, Xu K, Ren Y, Xie Y, Zhang X, Tian L, Li Y
Invest Ophthalmol Vis Sci 2018 Mar 1;59(3):1229-1237. doi: 10.1167/iovs.17-23312. PMID: 29625443
Non-syndromic retinitis pigmentosa.
Verbakel SK, van Huet RAC, Boon CJF, den Hollander AI, Collin RWJ, Klaver CCW, Hoyng CB, Roepman R, Klevering BJ
Prog Retin Eye Res 2018 Sep;66:157-186. Epub 2018 Mar 27 doi: 10.1016/j.preteyeres.2018.03.005. PMID: 29597005

Therapy

Dysregulation of histone deacetylases in ocular diseases.
Jun JH, Kim JS, Palomera LF, Jo DG
Arch Pharm Res 2024 Jan;47(1):20-39. Epub 2023 Dec 27 doi: 10.1007/s12272-023-01482-x. PMID: 38151648
Stem cell therapy for inherited retinal diseases: a systematic review and meta-analysis.
Chen X, Xu N, Li J, Zhao M, Huang L
Stem Cell Res Ther 2023 Oct 5;14(1):286. doi: 10.1186/s13287-023-03526-x. PMID: 37798796Free PMC Article
Molecular Strategies for RPGR Gene Therapy.
Cehajic Kapetanovic J, McClements ME, Martinez-Fernandez de la Camara C, MacLaren RE
Genes (Basel) 2019 Sep 4;10(9) doi: 10.3390/genes10090674. PMID: 31487940Free PMC Article
Gene therapy for RPE65-related retinal disease.
Miraldi Utz V, Coussa RG, Antaki F, Traboulsi EI
Ophthalmic Genet 2018 Dec;39(6):671-677. Epub 2018 Oct 18 doi: 10.1080/13816810.2018.1533027. PMID: 30335549
Mitochondrial biogenesis: pharmacological approaches.
Valero T
Curr Pharm Des 2014;20(35):5507-9. doi: 10.2174/138161282035140911142118. PMID: 24606795

Prognosis

Extracellular vesicles in degenerative retinal diseases: A new therapeutic paradigm.
Manai F, Smedowski A, Kaarniranta K, Comincini S, Amadio M
J Control Release 2024 Jan;365:448-468. Epub 2023 Dec 2 doi: 10.1016/j.jconrel.2023.11.035. PMID: 38013069
Leber Congenital Amaurosis.
Tsang SH, Sharma T
Adv Exp Med Biol 2018;1085:131-137. doi: 10.1007/978-3-319-95046-4_26. PMID: 30578499
Genetic Testing in Pediatric Ophthalmology.
Verma IC, Paliwal P, Singh K
Indian J Pediatr 2018 Mar;85(3):228-236. Epub 2017 Oct 2 doi: 10.1007/s12098-017-2453-7. PMID: 28971364
Mitochondrial biogenesis: pharmacological approaches.
Valero T
Curr Pharm Des 2014;20(35):5507-9. doi: 10.2174/138161282035140911142118. PMID: 24606795
Retinitis pigmentosa.
Merin S, Auerbach E
Surv Ophthalmol 1976 Mar-Apr;20(5):303-46. doi: 10.1016/s0039-6257(96)90001-6. PMID: 817406

Clinical prediction guides

Functional Vision in Patients With Biallelic USH2A Variants.
Heon E, Melia M, Bocchino LE, Samarakoon L, Duncan JL, Ayala AR, Audo I, Bradley C, Cheetham JK, Dagnelie G, Durham TA, Hoyng CB, Jain N, Jayasundera KT, Pennesi ME, Weng CY; Foundation Fighting Blindness Consortium Investigator Group
Am J Ophthalmol 2024 Apr;260:200-211. Epub 2023 Dec 21 doi: 10.1016/j.ajo.2023.12.009. PMID: 38135239
IMPG2-Related Maculopathy.
Birtel J, Caswell R, De Silva SR, Herrmann P, Rehman S, Lotery AJ, Mahroo OA, Michaelides M, Webster AR, MacLaren RE, Charbel Issa P
Am J Ophthalmol 2024 Feb;258:32-42. Epub 2023 Oct 6 doi: 10.1016/j.ajo.2023.10.002. PMID: 37806544
Foveal Hypoplasia in CRB1-Related Retinopathies.
Rodriguez-Martinez AC, Higgins BE, Tailor-Hamblin V, Malka S, Cheloni R, Collins AM, Bladen J, Henderson R, Moosajee M
Int J Mol Sci 2023 Sep 11;24(18) doi: 10.3390/ijms241813932. PMID: 37762234Free PMC Article
Prediction of visual impairment in retinitis pigmentosa using deep learning and multimodal fundus images.
Liu TYA, Ling C, Hahn L, Jones CK, Boon CJ, Singh MS
Br J Ophthalmol 2023 Oct;107(10):1484-1489. Epub 2022 Jul 27 doi: 10.1136/bjo-2021-320897. PMID: 35896367Free PMC Article
Mitochondrial biogenesis: pharmacological approaches.
Valero T
Curr Pharm Des 2014;20(35):5507-9. doi: 10.2174/138161282035140911142118. PMID: 24606795

Recent systematic reviews

Diagnostic accuracy of artificial intelligence in detecting retinitis pigmentosa: A systematic review and meta-analysis.
Musleh AM, AlRyalat SA, Abid MN, Salem Y, Hamila HM, Sallam AB
Surv Ophthalmol 2024 May-Jun;69(3):411-417. Epub 2023 Dec 1 doi: 10.1016/j.survophthal.2023.11.010. PMID: 38042377
Stem cell therapy for inherited retinal diseases: a systematic review and meta-analysis.
Chen X, Xu N, Li J, Zhao M, Huang L
Stem Cell Res Ther 2023 Oct 5;14(1):286. doi: 10.1186/s13287-023-03526-x. PMID: 37798796Free PMC Article
Epidemiology of Mutations in the 65-kDa Retinal Pigment Epithelium (RPE65) Gene-Mediated Inherited Retinal Dystrophies: A Systematic Literature Review.
Sallum JMF, Kaur VP, Shaikh J, Banhazi J, Spera C, Aouadj C, Viriato D, Fischer MD
Adv Ther 2022 Mar;39(3):1179-1198. Epub 2022 Jan 30 doi: 10.1007/s12325-021-02036-7. PMID: 35098484Free PMC Article
Vitamin A and fish oils for preventing the progression of retinitis pigmentosa.
Schwartz SG, Wang X, Chavis P, Kuriyan AE, Abariga SA
Cochrane Database Syst Rev 2020 Jun 18;6(6):CD008428. doi: 10.1002/14651858.CD008428.pub3. PMID: 32573764Free PMC Article
Vitamin A and fish oils for retinitis pigmentosa.
Rayapudi S, Schwartz SG, Wang X, Chavis P
Cochrane Database Syst Rev 2013 Dec 19;2013(12):CD008428. doi: 10.1002/14651858.CD008428.pub2. PMID: 24357340Free PMC Article

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