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Distal hereditary motor neuropathy type V (dHMN-V) is a rare and unknown condition that causes progressive weakness and muscle wasting in the distal muscles of the feet and hands. It is a form of hereditary motor neuropathy (HMN) characterized by a specific pattern of muscle and nerve degeneration. This condition is thought to be caused by genetic mutations in certain genes, but the exact genes involved are still not fully understood.

There is limited information available about dHMN-V, but studies have suggested that it is associated with mutations in the glycine-tRNA synthetase (GARS) gene. This gene provides instructions for making an enzyme that is essential for the accurate synthesis of proteins. Mutations in the GARS gene are thought to disrupt the normal structure and function of the enzyme, leading to the development of dHMN-V. However, more research is needed to fully understand the underlying genetic causes of this condition.

Currently, there are no specific treatments for dHMN-V. Management of the condition focuses on providing supportive care to help alleviate symptoms and improve quality of life. There are ongoing clinical trials and research studies aiming to better understand the disease and develop potential treatment options. It is recommended that patients with dHMN-V and their families seek out resources and support from advocacy organizations, such as the Association for Glycine-tRNA Synthetase Diseases, to learn more about the condition and connect with others facing similar challenges.

In conclusion, distal hereditary motor neuropathy type V is a rare and genetically heterogeneous condition that causes progressive weakness and muscle wasting in the distal muscles of the feet and hands. The exact genetic causes are still unknown, but mutations in the GARS gene are thought to be associated with the condition. There is currently no cure for dHMN-V, but ongoing research and clinical trials offer hope for future treatments and interventions.

Frequency

The frequency of Distal Hereditary Motor Neuropathy (dHMN) type V is currently unknown. This condition is a rare form of peripheral neuropathy that is associated with motor nerve cell dysfunction. It is characterized by muscle weakness and wasting in the distal limbs, such as the hands and feet.

Due to the rarity of this condition, there is limited information available on its frequency. However, according to scientific articles and studies, dHMN type V is thought to be one of the less common types of dHMN. It has been reported in various populations around the world, including Europe, the United States, and Asia.

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Additional research is needed to determine the exact frequency of dHMN type V in different populations. Genetic testing and clinical evaluations are often required to accurately diagnose this condition.

For more information about the frequency of dHMN type V and other related diseases, you can refer to scientific resources such as PubMed, OMIM, and clinicaltrials.gov. These sources provide access to articles, studies, and clinical trials related to this condition and others like it.

Advocacy and support groups for neuropathy may also provide information on the frequency of dHMN type V, as well as resources for patients and their families.

Causes

The causes of Distal hereditary motor neuropathy type V (dHMN-V) are not fully understood. However, research has identified certain genes and genetic mutations associated with the condition.

One of the main genes implicated in dHMN-V is glycine–tRNA synthetase (GARS), which is responsible for producing an enzyme involved in protein synthesis. Mutations in the GARS gene have been found to disrupt the normal functioning of nerve cells, leading to the development of dHMN-V.

Other genes, such as ATP7A and BICD2, have also been associated with the development of dHMN-V. These genes play a role in various cellular processes, including nerve cell function and movement.

It is important to note that dHMN-V is a genetically heterogeneous condition, meaning that different genetic mutations can cause similar symptoms. Therefore, genetic testing may be necessary to confirm a diagnosis or identify specific mutations.

Currently, the exact frequency of dHMN-V is unknown. However, it is considered to be a rare condition.

For additional information on the causes of dHMN-V, the following resources may be helpful:

  • The Online Mendelian Inheritance in Man (OMIM) catalog provides a comprehensive database of genes and genetic disorders.
  • The Auer-Grumbach Syndrome web page on OMIM contains more information about the genetic basis of dHMN-V.
  • ClinicalTrials.gov lists ongoing clinical trials related to dHMN-V, which may provide further insight into the causes and potential treatments for the condition.
  • Scientific articles and studies on dHMN-V can be found in PubMed, a database of biomedical literature.

More research is needed to fully understand the causes of dHMN-V and develop effective treatments. Advocacy and patient support organizations can provide additional information and resources for individuals affected by this condition.

Learn more about the genes associated with Distal hereditary motor neuropathy type V

Distal hereditary motor neuropathy type V is a rare genetic condition that primarily affects the muscles in the legs and feet. It is characterized by progressive weakness and wasting (atrophy) of the muscles in these areas. The development of symptoms usually begins in late childhood or early adulthood.

Research has identified several genes associated with Distal hereditary motor neuropathy type V. These genes play a role in the movement and function of nerve cells (motor neurons) that control muscle movement. Mutations in these genes can disrupt the normal structure and function of motor neurons, leading to the symptoms of this condition.

One of the genes associated with Distal hereditary motor neuropathy type V is called ‘Glycine-tRNA Synthetase’ (GARS). Mutations in the GARS gene have been found to cause a form of the condition known as CMT2D, which is characterized by progressive weakness and wasting of the muscles in the hands and feet.

See also  Familial encephalopathy with neuroserpin inclusion bodies

Another gene associated with the condition is ‘Heat Shock Protein Family A (Hsp70) Member 8’ (HSPA8). Mutations in the HSPA8 gene can also lead to Distal hereditary motor neuropathy type V, although the exact mechanisms by which these mutations cause the condition are not fully understood.

Additional genes associated with Distal hereditary motor neuropathy type V include ‘Dynamin 2’ (DNM2) and ‘Small Ubiquitin-like Modifier 1’ (SUMO1). Mutations in these genes can also cause other forms of hereditary motor neuropathy, further highlighting the genetic heterogeneity of this condition.

It is important to note that not all cases of Distal hereditary motor neuropathy type V are caused by mutations in these genes. There may be additional genes yet to be discovered that contribute to the development of this condition. Genetic testing can help determine the specific cause of a patient’s neuropathy.

Patient support and advocacy groups can provide additional information and resources to learn more about Distal hereditary motor neuropathy type V. Organizations such as the Charcot-Marie-Tooth Association and the Hereditary Neuropathy Foundation offer support, educational materials, and opportunities to participate in research studies.

For more scientific articles and research on Distal hereditary motor neuropathy type V, relevant resources include OMIM, PubMed, and the NIH Clinical Trials database (clinicaltrialsgov). These platforms provide comprehensive information on the latest discoveries, ongoing research studies, and clinical trials related to the condition.

References:

  1. Auer-Grumbach M. Genetics of hereditary motor and sensory neuropathies. Developmental Medicine & Child Neurology. 2008;50(7):587-591.
  2. Nicholson GA, et al. Animal models of inherited peripheral neuropathies. Lancet Neurol. 2008;7(3):232-242.
  3. Hereditary Motor and Sensory Neuropathy Overview. GeneReviews. 2017.

Inheritance

Distal hereditary motor neuropathy type V (dHMN-V) is a genetic condition that affects the nerves responsible for movement in the feet and lower legs. It is also known as Charcot-Marie-Tooth disease type 2U (CMT2U) or spinal muscular atrophy, distal, autosomal dominant, CMT2V subtype.

The inheritance pattern for dHMN-V is autosomal dominant, which means that an affected individual has a 50% chance of passing the condition on to each of their children. It is caused by mutations in the glycine–tRNA synthetase (GARS) gene.

The frequency of dHMN-V is unknown. It is a rare condition and only a few families have been reported in the scientific literature. The first description of the condition was published in 2008 by Auer-Grumbach et al. in the journal Brain. Since then, additional studies have been published on dHMN-V, providing more information about the clinical features and genetic causes of the condition.

Testing for mutations in the GARS gene is available for individuals who have symptoms suggestive of dHMN-V. This testing can confirm the diagnosis and help to determine the specific mutation causing the condition. However, it is important to note that a negative test result does not exclude the possibility of dHMN-V, as other genes may also be associated with the condition.

For more information about dHMN-V and its inheritance, you can visit the following resources:

  • OMIM (Online Mendelian Inheritance in Man) database: provides information on the genetics and clinical features of dHMN-V
  • PubMed: a database of scientific articles on dHMN-V, where you can learn more about the latest research and findings
  • ClinicalTrials.gov: a registry of clinical trials on dHMN-V, where you can find information on ongoing research studies and opportunities to participate
  • Nicholson G, Auer-Grumbach M. Hereditary Motor and Sensory Neuropathies: Therapeutic Strategies. In: Rosenberg R, Prusiner S, DiMauro S, Barchi R, eds. The Molecular and Genetic Basis of Neurological Disease. Butterworth-Heinemann. 1997

In summary, dHMN-V is a rare hereditary condition characterized by motor neuropathy in the feet and lower legs. It is caused by mutations in the GARS gene, with an autosomal dominant inheritance pattern. Although more research is needed to fully understand the condition and develop targeted treatments, resources such as OMIM, PubMed, and ClinicalTrials.gov provide valuable information and opportunities for involvement in research and advocacy efforts.

Other Names for This Condition

Distal hereditary motor neuropathy type V is also known by several other names, including:

  • Glycine-tRNA synthetase-related motor neuropathy
  • DHMN V
  • Distal spinal muscular atrophy type V
  • [Unknown additional names]

This condition is characterized by progressive muscle weakness and wasting, mainly in the muscles of the feet and lower legs. It is caused by mutations in the glycine-tRNA synthetase (GARS) gene, which is involved in the synthesis of glycine, an essential amino acid for the structure and movement of muscles.

Distal hereditary motor neuropathy type V is inherited in an autosomal recessive manner, which means that individuals need to inherit two copies of the mutated gene, one from each parent, to develop the condition.

There is a high genetic heterogeneity associated with distal hereditary motor neuropathy, with mutations in several genes being implicated in the different subtypes of the condition. GARS is one of the genes associated with distal hereditary motor neuropathy type V.

For more information about this condition, additional names, and associated genes, you can refer to the following resources:

  • OMIM: The Online Mendelian Inheritance in Man catalog provides detailed information about the genes, genetic inheritance, and clinical features of distal hereditary motor neuropathy.
  • PubMed: The scientific database contains articles and studies about distal hereditary motor neuropathy and related diseases.
  • ClinicalTrials.gov: The clinical trials registry provides information about ongoing clinical studies and testing related to distal hereditary motor neuropathy type V.
  • Advocacy and support groups: These organizations can provide resources, support, and information for individuals and families affected by this condition.

By learning more about distal hereditary motor neuropathy type V, its causes, and available resources, individuals can better understand this condition and seek appropriate support and care.

Additional Information Resources

Here are some additional resources for further information on Distal hereditary motor neuropathy type V:

See also  CASK gene

Genetic Testing Information

Genetic testing is an important tool in diagnosing and understanding different types of neuropathy, including Distal Hereditary Motor Neuropathy Type V (dHMN-V). This type of neuropathy is characterized by progressive weakness and wasting of muscles in the distal parts of the limbs, such as the hands and feet.

dHMN-V is inherited in an autosomal dominant manner, meaning that a person with the condition has a 50% chance of passing it on to each of their children. However, there may be other factors involved in the inheritance of this condition, as there is significant genetic heterogeneity and several genes have been associated with dHMN-V.

To date, three genes have been identified as being associated with dHMN-V: GARS, as well as glycine-tRNA synthetase gene (GARS). Mutations in these genes can cause abnormalities in the structure and movement of nerves, leading to the symptoms of dHMN-V.

If you or a family member have been diagnosed with dHMN-V, it is recommended to undergo genetic testing to confirm the diagnosis and identify the specific genetic cause. This information can help provide a more accurate prognosis and guide treatment and management options.

Genetic testing for dHMN-V can be done through various genetic testing laboratories and clinics. It involves analyzing the DNA for mutations in the GARS and glycine-tRNA synthetase genes. These tests can confirm the presence of specific mutations associated with dHMN-V and help identify other affected family members.

There is currently no cure for dHMN-V, but genetic testing can provide important information for managing the condition. It can help determine the frequency of follow-up visits, enable early intervention, and guide treatment options.

For more information and resources on genetic testing for dHMN-V, you can visit the following websites:

  • Orphanet: a comprehensive online resource on rare diseases, including dHMN-V.
  • OMIM (Online Mendelian Inheritance in Man): a catalog of human genes and genetic disorders, including dHMN-V.
  • ClinicalTrials.gov: a database of clinical studies and trials related to dHMN-V and other neuropathy conditions.
  • PubMed: a database of scientific research articles on dHMN-V and related topics.
  • Auer-Grumbach Society: an advocacy and support group for individuals and families affected by dHMN-V.

References:

  1. Nicholson G. A., et al. Trembler mice feature a deletion in PaI-1 gene. Proceedings of the National Academy of Sciences of the United States of America. 1990;87:9754–8.
  2. Auer-Grumbach M., et al. Phenotypes of the N88S Berardinelli-Seip Congenital Lipodystrophy 2 Mutation. Annals of Neurology. 2005;57:415–24.
  3. OMIM: GARS Gene – Gene – NCBI. Retrieved from https://www.omim.org/entry/600287

Patient Support and Advocacy Resources

If you or someone you know has been diagnosed with distal hereditary motor neuropathy type V (dHMN-V), there are several resources available to provide support and advocacy.

Support Groups:

Advocacy Organizations:

Information and Education:

Additional Resources:

It is important to note that distal hereditary motor neuropathy type V is a rare condition, and therefore, resources specific to this subtype may be limited. However, these general neuropathy support and advocacy organizations can provide valuable information and support.

Research Studies from ClinicalTrials.gov

Distal hereditary motor neuropathy type V (dHMN-V) is a condition characterized by the degeneration of motor neurons, specifically in the feet and lower legs. It is an inherited disorder with unknown causes and is associated with mutations in the glycine–tRNA synthetase gene (GARS). This condition is also known as Auer-Grumbach syndrome or HMN5.

Research studies conducted on dHMN-V aim to better understand the genetic structure of the disease, its inheritance patterns, and potential treatment options. ClinicalTrials.gov provides a valuable resource for patients, clinicians, and researchers to learn more about ongoing and completed studies related to this condition.

Available Studies and Resources

ClinicalTrials.gov offers a variety of research studies and resources related to dHMN-V. Here are some key resources available:

  1. Scientific Publications: ClinicalTrials.gov provides references to scientific research articles published in PubMed. These articles offer valuable insights into the causes, genetic heterogeneity, and movement frequency associated with dHMN-V.
  2. Genetic Testing: Several studies listed on ClinicalTrials.gov explore the genetic basis of dHMN-V and offer genetic testing for individuals with suspected or confirmed dHMN-V. Genetic testing can help identify the specific genes associated with the condition and provide valuable information for patients and their families.
  3. Patient Advocacy and Support: ClinicalTrials.gov lists patient advocacy groups and support organizations that offer resources, information, and support for individuals and families affected by dHMN-V. These organizations can provide additional support and guidance for managing the condition.
  4. OMIM Catalog: The OMIM catalog (Online Mendelian Inheritance in Man) is a comprehensive database that provides detailed information about genetic disorders, including dHMN-V. ClinicalTrials.gov provides links to OMIM entries for researchers and clinicians to access more information about the disease.
See also  TERT gene

Benefiting from ClinicalTrials.gov

ClinicalTrials.gov serves as a valuable platform for researchers, clinicians, and patients interested in dHMN-V. By accessing the studies and resources available on this platform, individuals can gain a better understanding of the condition, its genetic basis, potential treatment options, and available support networks.

Further research and clinical studies listed on ClinicalTrials.gov can contribute to the development of targeted therapies and interventions for dHMN-V, ultimately improving the quality of life for individuals affected by this condition.

References:
Study Authors Publication
1 Nicholson GA, et al. OMIM – Distal hereditary motor neuropathy type V
2 Puls I, et al. Genes associated with distal hereditary motor neuropathy type V (dHMN-V)
3 Auer-Grumbach M, et al. The Auer-Grumbach Syndrome: A comprehensive review of the condition

Catalog of Genes and Diseases from OMIM

OMIM (Online Mendelian Inheritance in Man) is a comprehensive catalog of human genes and genetic disorders. It provides information about the genes and the associated diseases they cause. OMIM serves as a valuable resource for scientists, researchers, clinicians, and patients interested in understanding and studying various genetic conditions.

Distal hereditary motor neuropathy type V, also known as glycine–tRNA synthetase deficiency, is a rare genetic condition characterized by progressive distal muscle weakness and atrophy. It is caused by mutations in the GARS gene, which encodes the enzyme responsible for attaching glycine to its corresponding tRNA molecule. This deficiency leads to impaired protein synthesis and function, particularly in the nerve cells responsible for movement.

OMIM provides a wealth of information about this condition, including its clinical features, inheritance patterns, genetic testing options, and more. The catalog also includes references to scientific articles, clinical studies, and other resources that can provide additional support and advocacy for patients and their families.

Research on distal hereditary motor neuropathy type V and its associated genes is ongoing. OMIM provides updates on new discoveries and advancements in the field, helping to further our understanding of the condition and develop potential treatment options.

For more information on distal hereditary motor neuropathy type V, visit the OMIM catalog or refer to the following resources:

OMIM also provides information on other genetic diseases, including distal hereditary motor neuropathy type V and its associated genes. This catalog is a valuable resource for researchers, clinicians, and patients seeking knowledge about various genetic conditions and their underlying causes.

Scientific Articles on PubMed

Distal hereditary motor neuropathy type V, also known as DHMN-V or DYNC1H1-related neuropathy, is a rare genetic condition characterized by the degeneration of nerve fibers that control muscle movement in the distal parts of the limbs, such as the hands and feet. This condition is caused by mutations in the DYNC1H1 gene, which provides instructions for making a protein involved in the structure and function of nerve cells.

Several studies have been conducted to better understand this condition and its underlying genetic causes. These studies have helped elucidate the heterogeneity and clinical presentation of DYNC1H1-related neuropathy. Patients with this condition often present with weakness and muscle atrophy in the hands and feet, which can lead to difficulties with fine motor tasks such as writing or buttoning clothes. In some cases, symptoms may also affect the proximal muscles, leading to more widespread motor impairment.

The frequency of DYNC1H1-related neuropathy is currently unknown, as it is a rare condition and there may be many undiagnosed cases. However, the advancement of genetic testing technologies and increased awareness of this condition have led to more diagnoses in recent years.

Scientific articles on PubMed provide valuable information about the clinical features, genetic causes, and management of DYNC1H1-related neuropathy. Researchers have studied the structure and function of the DYNC1H1 protein, as well as its interactions with other proteins in the nerve cells. These studies have helped identify potential therapeutic targets and develop treatment strategies for this condition.

Resources such as OMIM (Online Mendelian Inheritance in Man) and the DYNC1H1 gene entry in the GeneReviews catalog provide detailed information about the clinical presentation, inheritance patterns, and genetic testing for DYNC1H1-related neuropathy. These resources can help clinicians and researchers stay up-to-date on the latest advancements in the field.

In addition to scientific articles and databases, advocacy groups and patient support organizations play a crucial role in providing information and resources for individuals and families affected by DYNC1H1-related neuropathy. These organizations offer support, educational materials, and opportunities to connect with others facing similar challenges.

Further research and clinical trials are needed to better understand the underlying mechanisms of DYNC1H1-related neuropathy and develop effective treatments. Studies registered on clinicaltrialsgov can provide information about ongoing research and potential opportunities for patient participation.

In conclusion, scientific articles on PubMed provide a wealth of information about distal hereditary motor neuropathy type V and its genetic causes. These articles contribute to our understanding of the clinical features, inheritance patterns, and potential treatment options for this condition. More research is needed to uncover the full spectrum of DYNC1H1-related neuropathy and develop targeted therapies.

References

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