Name

CORD8 Gene

cone rod dystrophy 8

CORD1 Gene

cone rod dystrophy 1 (autosomal dominant)

CORD4 Gene

cone rod dystrophy 4

CORD17 Gene

cone rod dystrophy 17 (autosomal dominant)

PRCD Gene

progressive rod-cone degeneration

This gene is predominantly expressed in the retina, and mutations in this gene are the cause of autosomal recessive retinal degeneration in both humans and dogs. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2010]

CRX Gene

cone-rod homeobox

The protein encoded by this gene is a photoreceptor-specific transcription factor which plays a role in the differentiation of photoreceptor cells. This homeodomain protein is necessary for the maintenance of normal cone and rod function. Mutations in this gene are associated with photoreceptor degeneration, Leber congenital amaurosis type III and the autosomal dominant cone-rod dystrophy 2. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some variants has not been determined. [provided by RefSeq, Jul 2008]

COD2 Gene

cone dystrophy 2 (X-linked)

RCD1 Gene

retinal cone dystrophy 1

PDE6B Gene

phosphodiesterase 6B, cGMP-specific, rod, beta

Photon absorption triggers a signaling cascade in rod photoreceptors that activates cGMP phosphodiesterase (PDE), resulting in the rapid hydrolysis of cGMP, closure of cGMP-gated cation channels, and hyperpolarization of the cell. PDE is a peripheral membrane heterotrimeric enzyme made up of alpha, beta, and gamma subunits. This gene encodes the beta subunit. Mutations in this gene result in retinitis pigmentosa and autosomal dominant congenital stationary night blindness. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2009]

PDE6A Gene

phosphodiesterase 6A, cGMP-specific, rod, alpha

This gene encodes the cyclic-GMP (cGMP)-specific phosphodiesterase 6A alpha subunit, expressed in cells of the retinal rod outer segment. The phosphodiesterase 6 holoenzyme is a heterotrimer composed of an alpha, beta, and two gamma subunits. cGMP is an important regulator of rod cell membrane current, and its dynamic concentration is established by phosphodiesterase 6A cGMP hydrolysis and guanylate cyclase cGMP synthesis. The protein is a subunit of a key phototransduction enzyme and participates in processes of transmission and amplification of the visual signal. Mutations in this gene have been identified as one cause of autosomal recessive retinitis pigmentosa. [provided by RefSeq, Jul 2008]

PDE6G Gene

phosphodiesterase 6G, cGMP-specific, rod, gamma

This gene encodes the gamma subunit of cyclic GMP-phosphodiesterase, which is composed of alpha- and beta- catalytic subunits and two identical, inhibitory gamma subunits. This gene is expressed in rod photoreceptors and functions in the phototransduction signaling cascade. It is also expressed in a variety of other tissues, and has been shown to regulate the c-Src protein kinase and G-protein-coupled receptor kinase 2. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2009]

PDE6D Gene

phosphodiesterase 6D, cGMP-specific, rod, delta

This gene encodes the delta subunit of rod-specific photoreceptor phosphodiesterase (PDE), a key enzyme in the phototransduction cascade. A similar protein in cow functions in solubilizing membrane-bound PDE. In addition to its role in the PDE complex, the encoded protein is thought to bind to prenyl groups of proteins to target them to subcellular organelles called cilia. Mutations in this gene are associated with Joubert syndrome-22. Alternative splicing results in multiple splice variants. [provided by RefSeq, Mar 2014]

CCHCR1 Gene

coiled-coil alpha-helical rod protein 1

This gene encodes a protein with five coiled-coil alpha-helical rod domains that is thought to act as a regulator of mRNA metabolism through its interaction with mRNA-decapping protein 4. It localizes to P-bodies, the site of mRNA metabolism, with an N-terminus that is required for this subcellular localization, suggesting it is a P-body component. Naturally occurring mutations in this gene are associated with psoriasis. [provided by RefSeq, May 2017]

TLNRD1 Gene

talin rod domain containing 1

This gene encodes a protein that is regulated by micro RNA MiR-574-3, and is thought to have an oncogenic function in human bladder cancer. A similar gene in mouse is located in a chromosomal region critical for differentiation of mesoderm, which affects embryo patterning and the formation of heart, muscle, blood, skeleton and the urogenital system. The mouse gene is expressed in early development, and in the adult. [provided by RefSeq, Nov 2016]

OPN1MW Gene

opsin 1 (cone pigments), medium-wave-sensitive

This gene encodes for a light absorbing visual pigment of the opsin gene family. The encoded protein is called green cone photopigment or medium-wavelength sensitive opsin. Opsins are G-protein coupled receptors with seven transmembrane domains, an N-terminal extracellular domain, and a C-terminal cytoplasmic domain. The long-wavelength opsin gene and multiple copies of the medium-wavelength opsin gene are tandemly arrayed on the X chromosome and frequent unequal recombination and gene conversion may occur between these sequences. X chromosomes may have fusions of the medium- and long-wavelength opsin genes or may have more than one copy of these genes. Defects in this gene are the cause of deutanopic colorblindness. [provided by RefSeq, Mar 2009]

OPN1SW Gene

opsin 1 (cone pigments), short-wave-sensitive

This gene belongs to the G-protein coupled receptor 1 family, opsin subfamily. It encodes the blue cone pigment gene which is one of three types of cone photoreceptors responsible for normal color vision. Defects in this gene are the cause of tritan color blindness (tritanopia). Affected individuals lack blue and yellow sensory mechanisms while retaining those for red and green. Defective blue vision is characteristic. [provided by RefSeq, Jul 2008]

OPN1LW Gene

opsin 1 (cone pigments), long-wave-sensitive

This gene encodes for a light absorbing visual pigment of the opsin gene family. The encoded protein is called red cone photopigment or long-wavelength sensitive opsin. Opsins are G-protein coupled receptors with seven transmembrane domains, an N-terminal extracellular domain, and a C-terminal cytoplasmic domain. This gene and the medium-wavelength opsin gene are tandemly arrayed on the X chromosome and frequent unequal recombination and gene conversion may occur between these sequences. X chromosomes may have fusions of the medium- and long-wavelength opsin genes or may have more than one copy of these genes. Defects in this gene are the cause of partial, protanopic colorblindness. [provided by RefSeq, Jul 2008]

OPN1MW2 Gene

opsin 1 (cone pigments), medium-wave-sensitive 2

This gene encodes for a light absorbing visual pigment of the opsin gene family. The encoded protein is called green cone photopigment or medium-wavelength sensitive opsin. Opsins are G-protein coupled receptors with seven transmembrane domains, an N-terminal extracellular domain, and a C-terminal cytoplasmic domain. The long-wavelength opsin gene and multiple copies of the medium-wavelength opsin gene are tandemly arrayed on the X chromosome and frequent unequal recombination and gene conversion may occur between these sequences. X chromosomes may have fusions of the medium- and long-wavelength opsin genes or may have more than one copy of these genes. Defects in this gene are the cause of deutanopic colorblindness. [provided by RefSeq, Mar 2009]

PDE6C Gene

phosphodiesterase 6C, cGMP-specific, cone, alpha prime

This gene encodes the alpha-prime subunit of cone phosphodiesterase, which is composed of a homodimer of two alpha-prime subunits and 3 smaller proteins of 11, 13, and 15 kDa. Mutations in this gene are associated with cone dystrophy type 4 (COD4). [provided by RefSeq, Mar 2010]

PDE6H Gene

phosphodiesterase 6H, cGMP-specific, cone, gamma

This gene encodes the inhibitory (or gamma) subunit of the cone-specific cGMP phosphodiesterase, which is a tetramer composed of two catalytic chains (alpha and beta), and two inhibitory chains (gamma). It is specifically expressed in the retina, and is involved in the transmission and amplification of the visual signal. Mutations in this gene are associated with retinal cone dystrophy type 3A (RCD3A). [provided by RefSeq, Mar 2010]

MDRV Gene

muscular dystrophy, with rimmed vacuoles

MCDR3 Gene

macular dystrophy, retinal 3

MCDR1 Gene

macular dystrophy, retinal, 1 (North Carolina type)

MCDR4 Gene

macular dystrophy, retinal, 4 (North Carolina type with progressive sensorineural hearing loss)

CYMD Gene

cystoid macular dystrophy

LGMD1H Gene

limb girdle muscular dystrophy 1H (autosomal dominant)

LGMD1G Gene

limb girdle muscular dystrophy 1G (autosomal dominant)

FECD7 Gene

Corneal dystrophy, Fuchs endothelial, 7

FECD5 Gene

Corneal dystrophy, Fuchs endothelial, 5

FECD3 Gene

Corneal dystrophy, Fuchs endothelial, 3

FECD2 Gene

corneal dystrophy, Fuchs endothelial 2

MDC1B Gene

Muscular dystrophy, congenital, 1B

VMD1 Gene

vitelliform macular dystrophy, atypical

CDB2 Gene

corneal dystrophy of Bowman layer type II (Thiel-Behnke)

CACD Gene

central areolar choroidal dystrophy

FSHMD1A Gene

facioscapulohumeral muscular dystrophy 1A

Facioscapulohumeral muscular dystrophy (FSHD) is a common hereditary disease of muscle. Patients with FSHD have a chromosomal rearrangement within the subtelomeric region of chromosome 4 (4q35). This region is composed mainly of a polymorphic repeat structure consisting of 3.3 kb repeat units, designated D4Z4. The number of repeat units varies from 10 to more than 100 in the population, however, in FSHD patients only 1-10 repeat units is observed because of a deletion of an integral number of these units. FSHD is caused by an epigenetic mechanism involving the contraction of a subtelomeric macrosatellite repeat, which results in marked hypomethylation of the contracted D4Z4 allele. It is likely not the structure, but the deregulation of transcription of one or more genes as a result of repeat-contraction-mediated chromatin alterations, that causes FSHD. [provided by RefSeq, Sep 2011]

FSHMD1B Gene

facioscapulohumeral muscular dystrophy 1B

CACD3 Gene

Choroidal dystrophy, central areolar 3

LECD Gene

Corneal dystrophy, Lisch epithelial

MDBS2 Gene

butterfly-shaped pigmentary macular dystrophy 2

ATD Gene

asphixiating thoracic dystrophy (chondroectodermal dysplasia-like syndrome)

MDCMP Gene

muscular dystrophy, congenital, merosin-positive

XECD Gene

Corneal dystrophy, endothelial, X-linked

CHED1 Gene

corneal endothelial dystrophy 1 (autosomal dominant)