blue cone monochromacy

Summary
Definition
An achromatopsia that is characterized by severely impaired color discrimination, low visual acuity, nystagmus, photophobia due to the absence of functional long wavelength-sensitive and medium wavelength-sensitive cones in the retina and has_material_basis_in alteration in the red (OPN1LW) and green (OPN1MW) visual pigment gene cluster on chromosome Xq28 or in the locus control region for the red and green pigment genes, located adjacent to and 5-prime of the pigment gene cluster.
Super Class
X-linked recessive disease achromatopsia
Disease Ontology
DOID:0050679
Mondo Disease Ontology
GARD
MGI genotype (from TogoID)
Related Genes
Displaying all 2 entries
Gene ID Gene Symbol Description Source
2652 OPN1MW opsin 1, medium wave sensitive
5956 OPN1LW opsin 1, long wave sensitive
Displaying 1 entry
Gene ID Gene Symbol Description Source
14539 Opn1mw opsin 1 (cone pigments), medium-wave-sensitive (color blindness, deutan)
Related Glycoprotein
Displaying 1 entry
UniProt ID Protein Name Source
P04000 Long-wave-sensitive opsin 1
Displaying 1 entry
UniProt ID Protein Name Source
O35599 Medium-wave-sensitive opsin 1
The Human Phenotype Ontology
Displaying all 5 entries
HPO ID HPO Term
HP:0000551 Color vision defect
HP:0000662 Nyctalopia
HP:0000505 Visual impairment
HP:0007703 Abnormality of retinal pigmentation
HP:0000613 Photophobia
Displaying 1 entry
Gene ID Gene Symbol Description
93589 CACNA2D4 calcium voltage-gated channel auxiliary subunit alpha2delta 4

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: April 7, 2025