OMIA group 1481
Achromatopsia-2, CNGA3-related
The chain reaches the human disease achromatopsia 2, which Mondo defines as: “Achromatopsia 2 is a condition that affects the color vision. Most people have complete achromatopsia which is characterized by a total absence of color vision (only able to see black, white and shades of gray). Rarely, affected people may have incomplete achromatopsia which is associated with some color discrimination. Other common signs and symptoms include reduced visual acuity, involuntary back-and-forth eye movements, increased sensitivity to light (photophobia), and hyperopia (farsightedness). Achromatopsia 2 is caused by changes (mutations) in the CNGA3 gene and is inherited in an autosomal recessive manner. Although color discrimination cannot be improved, treatments are available to address some of the other associated symptoms.”
The chain
From the animal disease to the drugs. The page shows what each step found and where the chain stopped. It does not say whether the animal is a model of a human disease.
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Animal disease
Reached
OMIA records it in 2 species entries marked as a defect.
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Human disease
Reached
1 Mondo disease.
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Human gene
Reached
1 human gene.
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Target evidence
Reached
1 Open Targets association, with a best score of 0.71.
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Drugs
Stopped here
No ChEMBL drug acts on a human gene of the group's target evidence.
The chain stopped at Drugs: No ChEMBL drug acts on a human gene of the group's target evidence.
Natural-model score
How complete and how well supported the chain to each human disease is, out of 100, by stated rules. It does not say that the animal is a validated model of the human disease. How the score works.
61.8 out of 100
| Part | Computed from | Points |
|---|---|---|
| Target evidence | Open Targets score of 0.71 | 24.8 of 35 |
| Drugs | No drug has been tested for this disease, and none acts on its genes | 0.0 of 25 |
| Ortholog | One to one ortholog | 20.0 of 20 |
| Both routes | Both routes found this disease | 10.0 of 10 |
| Species | 2 naturally occurring species entries marked as a defect | 7.0 of 10 |
Species
The chain follows only the species entries that OMIA marks as a defect.
| Species | Scientific name | OMIA entry | A defect |
|---|---|---|---|
| dog | Canis lupus familiaris | OMIA:001481-9615 | Yes |
| sheep | Ovis aries | OMIA:001481-9940 | Yes |
Genes
Each gene OMIA records for a species entry, and the human gene it reaches through Ensembl's orthologs.
| Species | Animal gene | Human gene | Ortholog |
|---|---|---|---|
| dog | CNGA3 cyclic nucleotide gated channel alpha 3 NCBI Gene 481341 | CNGA3 Ensembl | one to one |
| sheep | CNGA3 cyclic nucleotide gated channel alpha 3 NCBI Gene 100233164 | CNGA3 Ensembl | one to one |
Human diseases
Two routes lead from an OMIA group to a Mondo human disease: OMIA's own Mondo link, and the group's OMIM numbers through Mondo's cross-references.
- OMIA's own Mondo link: found a disease.
- OMIA's OMIM numbers: found a disease.
| Mondo disease | Name | Found by |
|---|---|---|
| MONDO:0009003 | achromatopsia 2 Achromatopsia 2 is a condition that affects the color vision. Most people have complete achromatopsia which is characterized by a total absence of color vision (only able to see black, white and shades of gray). Rarely, affected people may have incomplete achromatopsia which is associated with some color discrimination. Other common signs and symptoms include reduced visual acuity, involuntary back-and-forth eye movements, increased sensitivity to light (photophobia), and hyperopia (farsightedness). Achromatopsia 2 is caused by changes (mutations) in the CNGA3 gene and is inherited in an autosomal recessive manner. Although color discrimination cannot be improved, treatments are available to address some of the other associated symptoms. | Both routes |
Target evidence
Each Open Targets association between one of the group's human genes and one of its human diseases, with its overall score and the score for each kind of evidence.
| Human gene | Human disease | Score | Evidence | Kinds of evidence |
|---|---|---|---|---|
| CNGA3 | achromatopsia 2 | 0.71 | 237 | Genetic association 0.94 Genetic literature 0.61 Animal model 0.60 Literature 0.10 |
Drugs
No ChEMBL drug acts on a human gene of the group's target evidence.