Leber congenital amaurosis 7

General Information (adopted from Orphanet):

Synonyms, Signs: LCA7
Number of Symptoms 7
OrphanetNr:
OMIM Id: 613829
ICD-10:
UMLs:
MeSH:
MedDRA:
Snomed:

Prevalence, inheritance and age of onset:

Prevalence: No data available.
Inheritance: Autosomal recessive
[Omim]
Age of onset:

Disease classification (adopted from Orphanet):

Parent Diseases: No data available.

Symptom Information: Sort by abundance 

1
(HPO:0000613) Photophobia 158 / 7739
2
(HPO:0000550) Undetectable electroretinogram 25 / 7739
3
(HPO:0000563) Keratoconus 25 / 7739
4
(HPO:0000505) Visual impairment 297 / 7739
5
(HPO:0000518) Cataract 454 / 7739
6
(HPO:0012043) Pendular nystagmus 11 / 7739
7
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739

Associated genes:

CRX;

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Description: (OMIM) Leber congenital amaurosis comprises a group of early-onset childhood retinal dystrophies characterized by vision loss, nystagmus, and severe retinal dysfunction. Patients usually present at birth with profound vision loss and pendular nystagmus. Electroretinogram (ERG) responses are usually nonrecordable. ...
Clinical Description OMIM Because the CRX gene is essential for photoreceptor maintenance and because expression of a dominant-negative CRX allele in developing retina prevented outer segment biogenesis (Furukawa et al., 1997), Freund et al. (1998) tested the hypothesis that CRX mutations ...
Molecular genetics OMIM Using SSCP analysis and direct sequencing of PCR-amplified exons in the CRX gene in 74 LCA patients, Freund et al. (1998) identified putative disease-causing de novo deletion mutations in CRX in 2 patients with LCA7: a 2-bp deletion ...