Question 1

What is Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

Charcot-Marie-Tooth disease axonal type 2L (CMT2L) is a rare inherited nerve disorder that affects the peripheral nerves, which are responsible for movement and sensation. It belongs to a group of conditions known as axonal Charcot-Marie-Tooth diseases, in which the damage is mainly to the nerve fibers (axons).

In the only reported family, the disease usually begins between the ages of 15 and 33 years. People with this condition have a gradual onset of symptoms that include muscle weakness, especially in the legs, and sensory changes. The condition progresses slowly over time.

Question 2

What are the symptoms of Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

Common symptoms include symmetric weakness in the distal parts of the legs and sometimes the hands, reduced or absent tendon reflexes, and sensory loss in the lower legs. Additionally, many people experience a high arch in the feet, known as pes cavus.

Question 3

What causes Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

This condition is caused by mutations in the HSPB8 gene and follows an autosomal dominant inheritance pattern. This means that a change in just one copy of the gene can lead to the development of the disorder. Associated genes include HSPB8.

Question 4

How is Charcot-Marie-Tooth disease axonal type 2L inherited?

Accepted Answer

Charcot-Marie-Tooth disease axonal type 2L follows an autosomal dominant inheritance pattern. This means inheriting just one copy of the altered gene from either parent can cause the condition.

Question 5

How rare is Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

Charcot-Marie-Tooth disease axonal type 2L is classified as very rare. The estimated prevalence is approximately <1 in 1,000,000. Because rare disease data can be limited, actual numbers may differ from published estimates.

Question 6

How is Charcot-Marie-Tooth disease axonal type 2L diagnosed?

Accepted Answer

Information about diagnosis is currently limited for this condition.

Question 7

Are there treatments for Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

Information about treatment is currently limited for this condition.

Question 8

What are the long-term effects of Charcot-Marie-Tooth disease axonal type 2L on mobility?

Accepted Answer

Charcot-Marie-Tooth disease axonal type 2L can lead to gradual muscle weakness, especially in the legs. Over time, this may affect mobility, making it harder to walk or perform daily activities. However, the progression is slow, so many people may maintain their mobility for a longer time before experiencing more severe symptoms.

Question 9

How does Charcot-Marie-Tooth disease axonal type 2L impact daily life and activities?

Accepted Answer

Living with Charcot-Marie-Tooth disease axonal type 2L can affect daily activities due to muscle weakness and sensory changes. People may find it challenging to walk, balance, or perform tasks that require fine motor skills. Supportive measures, like physical therapy, can help manage these challenges and improve quality of life.

Question 10

What should families consider when planning for children if one parent has Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

Since Charcot-Marie-Tooth disease axonal type 2L is inherited in an autosomal dominant pattern, there is a 50% chance for each child to inherit the condition if one parent has it. Families may want to discuss genetic counseling to understand the risks and options available for family planning.

Question 11

What specific symptoms should I watch for in Charcot-Marie-Tooth disease axonal type 2L?

Accepted Answer

In Charcot-Marie-Tooth disease axonal type 2L, you should watch for muscle weakness in the legs and sometimes the hands. Other symptoms include reduced or absent tendon reflexes and sensory loss in the lower legs. A high arch in the feet, known as pes cavus, is also common and can affect walking.

Organ System	Phenotype Count	Example Features
Brain and nerves	2	Hyporeflexia, Peripheral axonal neuropathy
Bones and joints	1	Sideways curvature of the spine (scoliosis)
Muscles	1	Distal muscle weakness

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Charcot-Marie-Tooth disease axonal type 2L

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Charcot-Marie-Tooth disease axonal type 2L

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Prognosis

Research Landscape

Recent Publications

Medical References

External Resources

OMIM

Orphanet

GARD

Related Diseases

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

What is Charcot-Marie-Tooth disease axonal type 2L?

What are the symptoms of Charcot-Marie-Tooth disease axonal type 2L?

What causes Charcot-Marie-Tooth disease axonal type 2L?

How is Charcot-Marie-Tooth disease axonal type 2L inherited?

How rare is Charcot-Marie-Tooth disease axonal type 2L?

How is Charcot-Marie-Tooth disease axonal type 2L diagnosed?

Are there treatments for Charcot-Marie-Tooth disease axonal type 2L?

What are the long-term effects of Charcot-Marie-Tooth disease axonal type 2L on mobility?

How does Charcot-Marie-Tooth disease axonal type 2L impact daily life and activities?

What should families consider when planning for children if one parent has Charcot-Marie-Tooth disease axonal type 2L?

What specific symptoms should I watch for in Charcot-Marie-Tooth disease axonal type 2L?