Congenital contractural arachnodactyly: Difference between revisions
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{{Infobox medical condition | |||
| name = Congenital contractural arachnodactyly | |||
| synonyms = Beals syndrome, Beals-Hecht syndrome | |||
| field = [[Medical genetics]] | |||
| symptoms = Long limbs, [[arachnodactyly]], [[contracture]]s, [[kyphoscoliosis]], [[crumpled ear]]s | |||
| complications = [[Scoliosis]], [[joint contracture]]s | |||
| onset = [[Congenital]] | |||
| duration = Lifelong | |||
| causes = [[Genetic mutation]] in the [[FBN2]] gene | |||
| risks = [[Family history]] | |||
| diagnosis = [[Clinical examination]], [[genetic testing]] | |||
| differential = [[Marfan syndrome]], [[Ehlers-Danlos syndrome]] | |||
| treatment = [[Physical therapy]], [[orthopedic surgery]] | |||
| prognosis = Variable, generally good with treatment | |||
| frequency = Rare | |||
}} | |||
{{Short description|A rare genetic disorder affecting connective tissue}} | {{Short description|A rare genetic disorder affecting connective tissue}} | ||
'''Congenital contractural arachnodactyly''' (CCA), also known as '''Beals syndrome''', is a rare [[genetic disorder]] that affects the [[connective tissue]] in the body. It is characterized by [[arachnodactyly]], which refers to abnormally long and slender fingers and toes, and [[contractures]], which are permanent shortening of muscles or tendons around joints. This condition is similar to [[Marfan syndrome]], but it has distinct features and is caused by mutations in a different gene. | '''Congenital contractural arachnodactyly''' (CCA), also known as '''Beals syndrome''', is a rare [[genetic disorder]] that affects the [[connective tissue]] in the body. It is characterized by [[arachnodactyly]], which refers to abnormally long and slender fingers and toes, and [[contractures]], which are permanent shortening of muscles or tendons around joints. This condition is similar to [[Marfan syndrome]], but it has distinct features and is caused by mutations in a different gene. | ||
==Genetics== | ==Genetics== | ||
Congenital contractural arachnodactyly is caused by mutations in the [[FBN2 gene]], which provides instructions for making a protein called [[fibrillin-2]]. Fibrillin-2 is an essential component of the [[extracellular matrix]], which provides structural support to tissues and organs. Mutations in the FBN2 gene lead to the production of an abnormal fibrillin-2 protein, disrupting the normal function of connective tissue. | Congenital contractural arachnodactyly is caused by mutations in the [[FBN2 gene]], which provides instructions for making a protein called [[fibrillin-2]]. Fibrillin-2 is an essential component of the [[extracellular matrix]], which provides structural support to tissues and organs. Mutations in the FBN2 gene lead to the production of an abnormal fibrillin-2 protein, disrupting the normal function of connective tissue. | ||
CCA is inherited in an [[autosomal dominant]] pattern, meaning that a single copy of the altered gene in each cell is sufficient to cause the disorder. This means that an affected individual has a 50% chance of passing the mutation to their offspring. | CCA is inherited in an [[autosomal dominant]] pattern, meaning that a single copy of the altered gene in each cell is sufficient to cause the disorder. This means that an affected individual has a 50% chance of passing the mutation to their offspring. | ||
==Clinical Features== | ==Clinical Features== | ||
Individuals with congenital contractural arachnodactyly typically present with a range of clinical features, including: | Individuals with congenital contractural arachnodactyly typically present with a range of clinical features, including: | ||
* '''Arachnodactyly''': Long, slender fingers and toes. | * '''Arachnodactyly''': Long, slender fingers and toes. | ||
* '''Contractures''': Permanent shortening of muscles or tendons, particularly affecting the elbows, knees, and fingers. | * '''Contractures''': Permanent shortening of muscles or tendons, particularly affecting the elbows, knees, and fingers. | ||
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* '''Muscle hypoplasia''': Underdevelopment of muscles, leading to reduced muscle mass and strength. | * '''Muscle hypoplasia''': Underdevelopment of muscles, leading to reduced muscle mass and strength. | ||
* '''Joint laxity''': Increased flexibility of the joints, which may lead to joint instability. | * '''Joint laxity''': Increased flexibility of the joints, which may lead to joint instability. | ||
==Diagnosis== | ==Diagnosis== | ||
The diagnosis of congenital contractural arachnodactyly is based on clinical evaluation, family history, and genetic testing. A healthcare provider may suspect CCA based on the characteristic physical features and may confirm the diagnosis through genetic testing to identify mutations in the FBN2 gene. | The diagnosis of congenital contractural arachnodactyly is based on clinical evaluation, family history, and genetic testing. A healthcare provider may suspect CCA based on the characteristic physical features and may confirm the diagnosis through genetic testing to identify mutations in the FBN2 gene. | ||
==Management== | ==Management== | ||
There is no cure for congenital contractural arachnodactyly, but management focuses on alleviating symptoms and improving quality of life. Treatment options may include: | There is no cure for congenital contractural arachnodactyly, but management focuses on alleviating symptoms and improving quality of life. Treatment options may include: | ||
* '''Physical therapy''': To improve joint mobility and muscle strength. | * '''Physical therapy''': To improve joint mobility and muscle strength. | ||
* '''Orthopedic interventions''': Such as braces or surgery to correct joint contractures or spinal deformities. | * '''Orthopedic interventions''': Such as braces or surgery to correct joint contractures or spinal deformities. | ||
* '''Regular monitoring''': To assess and manage any complications, such as scoliosis or joint problems. | * '''Regular monitoring''': To assess and manage any complications, such as scoliosis or joint problems. | ||
==Prognosis== | ==Prognosis== | ||
The prognosis for individuals with congenital contractural arachnodactyly varies depending on the severity of the condition and the presence of any complications. With appropriate management, many individuals can lead relatively normal lives, although they may require ongoing medical care and support. | The prognosis for individuals with congenital contractural arachnodactyly varies depending on the severity of the condition and the presence of any complications. With appropriate management, many individuals can lead relatively normal lives, although they may require ongoing medical care and support. | ||
==Related pages== | ==Related pages== | ||
* [[Marfan syndrome]] | * [[Marfan syndrome]] | ||
* [[Connective tissue disorder]] | * [[Connective tissue disorder]] | ||
* [[Genetic disorder]] | * [[Genetic disorder]] | ||
[[Category:Genetic disorders]] | [[Category:Genetic disorders]] | ||
[[Category:Connective tissue diseases]] | [[Category:Connective tissue diseases]] | ||
Latest revision as of 22:52, 3 April 2025
| Congenital contractural arachnodactyly | |
|---|---|
| Synonyms | Beals syndrome, Beals-Hecht syndrome |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Long limbs, arachnodactyly, contractures, kyphoscoliosis, crumpled ears |
| Complications | Scoliosis, joint contractures |
| Onset | Congenital |
| Duration | Lifelong |
| Types | N/A |
| Causes | Genetic mutation in the FBN2 gene |
| Risks | Family history |
| Diagnosis | Clinical examination, genetic testing |
| Differential diagnosis | Marfan syndrome, Ehlers-Danlos syndrome |
| Prevention | N/A |
| Treatment | Physical therapy, orthopedic surgery |
| Medication | N/A |
| Prognosis | Variable, generally good with treatment |
| Frequency | Rare |
| Deaths | N/A |
A rare genetic disorder affecting connective tissue
Congenital contractural arachnodactyly (CCA), also known as Beals syndrome, is a rare genetic disorder that affects the connective tissue in the body. It is characterized by arachnodactyly, which refers to abnormally long and slender fingers and toes, and contractures, which are permanent shortening of muscles or tendons around joints. This condition is similar to Marfan syndrome, but it has distinct features and is caused by mutations in a different gene.
Genetics[edit]
Congenital contractural arachnodactyly is caused by mutations in the FBN2 gene, which provides instructions for making a protein called fibrillin-2. Fibrillin-2 is an essential component of the extracellular matrix, which provides structural support to tissues and organs. Mutations in the FBN2 gene lead to the production of an abnormal fibrillin-2 protein, disrupting the normal function of connective tissue. CCA is inherited in an autosomal dominant pattern, meaning that a single copy of the altered gene in each cell is sufficient to cause the disorder. This means that an affected individual has a 50% chance of passing the mutation to their offspring.
Clinical Features[edit]
Individuals with congenital contractural arachnodactyly typically present with a range of clinical features, including:
- Arachnodactyly: Long, slender fingers and toes.
- Contractures: Permanent shortening of muscles or tendons, particularly affecting the elbows, knees, and fingers.
- Kyphoscoliosis: A combination of kyphosis (outward curvature of the spine) and scoliosis (sideways curvature of the spine).
- Crumpled ears: The outer ear may appear crumpled or folded.
- Muscle hypoplasia: Underdevelopment of muscles, leading to reduced muscle mass and strength.
- Joint laxity: Increased flexibility of the joints, which may lead to joint instability.
Diagnosis[edit]
The diagnosis of congenital contractural arachnodactyly is based on clinical evaluation, family history, and genetic testing. A healthcare provider may suspect CCA based on the characteristic physical features and may confirm the diagnosis through genetic testing to identify mutations in the FBN2 gene.
Management[edit]
There is no cure for congenital contractural arachnodactyly, but management focuses on alleviating symptoms and improving quality of life. Treatment options may include:
- Physical therapy: To improve joint mobility and muscle strength.
- Orthopedic interventions: Such as braces or surgery to correct joint contractures or spinal deformities.
- Regular monitoring: To assess and manage any complications, such as scoliosis or joint problems.
Prognosis[edit]
The prognosis for individuals with congenital contractural arachnodactyly varies depending on the severity of the condition and the presence of any complications. With appropriate management, many individuals can lead relatively normal lives, although they may require ongoing medical care and support.
