COL9A2
collagen type IX alpha 2 chain
Normal Function
Health Conditions Related to Genetic Changes
Multiple epiphyseal dysplasia
At least five mutations in the COL9A2 gene have been shown to cause dominant multiple epiphyseal dysplasia, a disorder of cartilage and bone development that primarily affects the ends of the long bones in the arms and legs (epiphyses). All of these mutations disrupt how genetic information is spliced together to make the blueprint for producing the α2(IX) chain. These mutations, called splice-site mutations, change one DNA building block (nucleotide) near an area of the gene called exon 3. These mutations in the COL9A2 gene result in the deletion of 12 protein building blocks (amino acids) from the α2(IX) chain. It is not known how mutations in COL9A2 cause the signs and symptoms of dominant multiple epiphyseal dysplasia.
More About This Health ConditionRelated Conditions
Multiple epiphyseal dysplasiaStickler syndromeIntervertebral disc disease
Health Conditions Related to Genetic Changes
At least five mutations in the COL9A2 gene have been shown to cause dominant multiple epiphyseal dysplasia, a disorder of cartilage and bone development that primarily affects the ends of the long bones in the arms and legs (epiphyses). All of these mutations disrupt how genetic information is spliced together to make the blueprint for producing the α2(IX) chain. These mutations, called splice-site mutations, change one DNA building block (nucleotide) near an area of the gene called exon 3. These mutations in the COL9A2 gene result in the deletion of 12 protein building blocks (amino acids) from the α2(IX) chain. It is not known how mutations in COL9A2 cause the signs and symptoms of dominant multiple epiphyseal dysplasia.
MedlinePlus Genetics provides information about Stickler syndrome
MedlinePlus Genetics provides information about Intervertebral disc disease