Presynaptic Congenital Myasthenic Syndromes

Description

Myasthenia gravis is a disease that causes weakness in the muscles under your control. It happens because of a problem in communication between your nerves and muscles. Myasthenia gravis is an autoimmune disease. Your body's own immune system makes antibodies that block or change some of the nerve signals to your muscles. This makes your muscles weaker. Common symptoms are trouble with eye and eyelid movement, facial expression and swallowing. But it can also affect other muscles. The weakness gets worse with activity, and better with rest. There are medicines to help improve nerve-to-muscle messages and make muscles stronger. With treatment, the muscle weakness often gets much better. Other drugs keep your body from making so many abnormal antibodies. There are also treatments which filter abnormal antibodies from the blood or add healthy antibodies from donated blood. Sometimes surgery to take out the thymus gland helps. For some people, myasthenia gravis can go into remission and they do not need medicines. The remission can be temporary or permanent. If you have myasthenia gravis, it is important to follow your treatment plan. If you do, you can expect your life to be normal or close to it. NIH: National Institute of Neurological Disorders and Stroke

Clinical Features

Top most frequent phenotypes and symptoms related to Presynaptic Congenital Myasthenic Syndromes

  • Intellectual disability
  • Seizures
  • Ataxia
  • Nystagmus
  • Sensorineural hearing impairment
  • Ptosis
  • Low-set ears
  • High palate
  • Feeding difficulties
  • Motor delay

And another 58 symptoms. If you need more information about this disease we can help you.

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Incidence and onset information

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

Researches and researchers

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Presynaptic Congenital Myasthenic Syndromes Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Ataxia, Comprehensive Evaluation.

By Athena Diagnostics Inc (United States).

SACS, ATXN1, ATXN10, ATXN2, ATXN7, ATXN8OS, SLC1A3, SPTBN2, TBP, TTPA, VAMP1, CACNA1A, CACNB4, APTX, TGM6, COQ8A, SYNE1, TDP1, TTBK2, SYT14 , (...)

View the complete list with 22 more genes
Specificity
3 %
Genes
10 %
Ataxia, Supplemental Dominant Evaluation.

By Athena Diagnostics Inc (United States).

SLC1A3, SPTBN2, VAMP1, CACNA1A, CACNB4, TGM6, TTBK2, AFG3L2, EEF2, FGF14, ITPR1, KCNA1, KCNC3, KCND3, PDYN, PRKCG
Specificity
7 %
Genes
10 %
Ataxia, Complete Dominant Evaluation.

By Athena Diagnostics Inc (United States).

ATXN1, ATXN10, ATXN2, ATXN7, ATXN8OS, SLC1A3, SPTBN2, TBP, VAMP1, CACNA1A, CACNB4, TGM6, TTBK2, ATN1, AFG3L2, EEF2, FGF14, ITPR1, KCNA1, KCNC3 , (...)

View the complete list with 5 more genes
Specificity
4 %
Genes
10 %
Hereditary Spastic Paraplegia Panel.

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

RTN2, SACS, SLC16A2, SLC2A1, KDM5C, SPG11, ATL1, SPAST, SPG7, TFG, ACOX1, TREX1, UCHL1, VAMP1, ERLIN2, CAPN1, BSCL2, SAMHD1, PNPLA6, ERLIN1 , (...)

View the complete list with 59 more genes
Specificity
2 %
Genes
10 %
Hereditary Spastic Paraplegia Exome Panel.

By Genetic Services Laboratory University of Chicago (United States).

RTN2, SACS, SLC16A2, SLC2A1, KDM5C, SPG11, ATL1, SPAST, SPG7, VAMP1, ERLIN2, CAPN1, BSCL2, PNPLA6, ERLIN1, NIPA1, GJC2, EXOSC3, SPART, CPT1C , (...)

View the complete list with 36 more genes
Specificity
2 %
Genes
10 %
Ataxia Exome Panel.

By Genetic Services Laboratory University of Chicago (United States).

BCS1L, RTN2, SACS, SCN1A, SCN2A, SCN8A, SCO1, SDHA, SDHD, SLC16A2, SLC17A5, SLC19A2, SLC1A3, SLC20A2, SLC2A1, SLC6A1, SLC9A1, SLC9A6, SNAP25, SOD1 , (...)

View the complete list with 457 more genes
Specificity
1 %
Genes
20 %
Autosomal dominant spastic ataxia 1 (sequence analysis of VAMP1 gene).

By CGC Genetics (Portugal).

VAMP1
Specificity
100 %
Genes
10 %
Hereditary ataxias (NGS panel for 44 genes).

By CGC Genetics (Portugal).

SACS, SLC1A3, SPTBN2, TTPA, VAMP1, VLDLR, CACNA1A, CACNB4, ELOVL4, ABHD12, APTX, TGM6, COQ8A, SYNE1, TDP1, TTBK2, CCDC88C, ELOVL5, SYT14, PLEKHG4 , (...)

View the complete list with 24 more genes
Specificity
3 %
Genes
10 %

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Sources and references

You can check the following sources for additional information.

ORPHANET Rare Disease Symptoms Checker

If you liked this article maybe you will also find interesting the following in-depth articles about other rare diseases, like WEBB-DATTANI SYNDROME; WEDAS EPILEPTIC ENCEPHALOPATHY, EARLY INFANTILE, 2; EIEE2 DEAFNESS, AUTOSOMAL RECESSIVE 15; DFNB15 LEUKODYSTROPHY, PROGRESSIVE, EARLY CHILDHOOD-ONSET; PLDECO CAMPOMELIC DYSPLASIA CEREBELLAR ATAXIA, NONPROGRESSIVE, WITH MENTAL RETARDATION; CANPMR ATYPICAL JUVENILE PARKINSONISM

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