Neuronopathy, Distal Hereditary Motor, Type Viia; Hmn7a

Description

Distal hereditary motor neuronopathy type VIIa is an autosomal dominant neurologic disorder characterized by onset in the second decade of progressive distal muscle wasting and weakness affecting the upper and lower limbs and resulting in walking difficulties and hand grip. There is significant muscle atrophy of the hands and lower limbs. The disorder is associated with vocal cord paresis due to involvement of the tenth cranial nerve (summary by Barwick et al., 2012).For a general phenotypic description and a discussion of genetic heterogeneity of distal HMN, see HMN type I (HMN1 ).

Clinical Features

Top most frequent phenotypes and symptoms related to Neuronopathy, Distal Hereditary Motor, Type Viia; Hmn7a

  • Hearing impairment
  • Sensorineural hearing impairment
  • Peripheral neuropathy
  • Skeletal muscle atrophy
  • Tremor
  • Hyporeflexia
  • Pes cavus
  • Difficulty walking
  • Paralysis
  • Distal muscle weakness

And another 5 symptoms. If you need more information about this disease we can help you.

Click here to know more about Mendelian.

Incidence and onset information

Not enough data available about incidence and published cases.
No data available about the known clinical features onset.

Alternative names

Neuronopathy, Distal Hereditary Motor, Type Viia; Hmn7a Is also known as spinal muscular atrophy, distal, with vocal cord paralysis, neuropathy, distal hereditary motor, type viia, hmn viia, dhmn7a, harper-young myopathy, dhmnvp.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.


Mendelian

Accelerate your rare disease diagnosis with us

Learn more

Neuronopathy, Distal Hereditary Motor, Type Viia; Hmn7a Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Neuromuscular Disorders Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

RYR1, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCE, SGCG, SLC25A4, SUCLA2, SUCLG1, TWNK, TCAP, TIA1, TK2, TNNI2, TNNT1, TPM2, TPM3, MYOT , (...)

View the complete list with 124 more genes
Specificity
1 %
Genes
100 %
Congenital Contractures Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

SKI, SLC18A3, TNNI2, TNNT3, TPM2, TPM3, UBA1, ZMPSTE24, ACTA1, ADGRG6, SLC5A7, KLHL41, FKBP10, NEK9, NALCN, CHAT, CHRNA1, CHRNB1, CHRND, CHRNE , (...)

View the complete list with 37 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth (CMT) and Related Hereditary Neuropathies, PMP22 Deletion/Duplication with Reflex to Sequencing Panel.

By ARUP Laboratories, Molecular Genetics and Genomics (United States).

SBF1, SCN9A, SLC12A6, SOX10, ATL1, SPTLC1, SPTLC2, TFG, YARS, PRX, SLC5A7, ARHGEF10, WNK1, BSCL2, GDAP1, TRIM2, CCT5, KIF1B, LITAF, FIG4 , (...)

View the complete list with 58 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth (CMT) and Related Hereditary Neuropathies Panel, Sequencing.

By ARUP Laboratories, Molecular Genetics and Genomics (United States).

SBF1, SCN9A, SLC12A6, SOX10, ATL1, SPTLC1, SPTLC2, TFG, YARS, PRX, SLC5A7, ARHGEF10, WNK1, BSCL2, GDAP1, TRIM2, CCT5, KIF1B, LITAF, FIG4 , (...)

View the complete list with 58 more genes
Specificity
2 %
Genes
100 %
Distal hereditary motor neuropathy type VIIA (HMN7A, sequence analysis of SLC5A7 gene).

By CGC Genetics (Portugal).

SLC5A7
Specificity
100 %
Genes
100 %
Spinal muscular atrophy (NGS panel for 21 genes).

By CGC Genetics (Portugal).

SCO2, UBA1, VAPB, VRK1, SLC5A7, CHCHD10, BSCL2, EXOSC8, BICD2, TRPV4, REEP1, DCTN1, FBXO38, PLEKHG5, DYNC1H1, HSPB8, GARS, DNAJB2, IGHMBP2, ASAH1 , (...)

View the complete list with 1 more genes
Specificity
5 %
Genes
100 %
Distal Hereditary Motor Neuropathy Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics (United States).

SYT2, SLC5A7, BSCL2, BICD2, TRPV4, AARS, LAS1L, REEP1, DCTN1, FBXO38, DYNC1H1, HSPB8, GAN, GARS, SETX, HINT1, DNAJB2, HSPB1, HSPB3, IGHMBP2 , (...)

View the complete list with 2 more genes
Specificity
5 %
Genes
100 %
Distal Hereditary Motor Neuropathy, Type 7A via SLC5A7 Gene Sequencing with CNV Detection.

By PreventionGenetics PreventionGenetics (United States).

SLC5A7
Specificity
100 %
Genes
100 %

We have 18 more panels available in our App

Get the app

Sources and references

You can check the following sources for additional information.

OMIM MESH Genetic Syndrome Finder

If you liked this article maybe you will also find interesting the following in-depth articles about other rare diseases, like URIC ACID CONCENTRATION, SERUM, QUANTITATIVE TRAIT LOCUS 1; UAQTL1 PREIMPLANTATION EMBRYONIC LETHALITY 1; PREMBL1

Need help with a diagnosis?

Learn more about how to achieve it with Mendelian


Learn more