Myasthenic Syndrome, Congenital, 4a, Slow-channel; Cms4a

Table of contents:

Description
Related genes
Clinical Features
Incidence and onset information
Alternative Names
Researches and researchers
Gene Panels
Sources and references

Description

Slow-channel congenital myasthenic syndrome (SCCMS) is a disorder of the postsynaptic neuromuscular junction (NMJ) characterized by early-onset progressive muscle weakness. The disorder results from kinetic abnormalities of the acetylcholine receptor channel, specifically from prolonged opening and activity of the channel, which causes prolonged synaptic currents resulting in a depolarization block. This is associated with calcium overload, which may contribute to subsequent degeneration of the endplate and postsynaptic membrane. Treatment with quinine, quinidine, or fluoxetine may be helpful; acetylcholinesterase inhibitors and amifampridine should be avoided (summary by Engel et al., 2015).For a discussion of genetic heterogeneity of CMS, see CMS1A (OMIM ).

Genes related to Myasthenic Syndrome, Congenital, 4a, Slow-channel; Cms4a

CHRNE

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Clinical Features

Top most frequent phenotypes and symptoms related to Myasthenic Syndrome, Congenital, 4a, Slow-channel; Cms4a

Generalized hypotonia
Strabismus
Muscle weakness
Ptosis
Dysphagia
Respiratory insufficiency
Respiratory distress
Myopathy
Feeding difficulties in infancy
Limb muscle weakness

And another 15 symptoms. If you need more information about this disease we can help you.

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Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
— No data available about the known clinical features onset.

Alternative names

Myasthenic Syndrome, Congenital, 4a, Slow-channel; Cms4a Is also known as cms1a1, formerly, cms ia1, formerly, congenital myasthenic syndrome type ia1, formerly.

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.

Myasthenic Syndrome, Congenital, 4a, Slow-channel; Cms4a Recommended genes panels

Panel Name, Specifity and genes Tested/covered
GeneAware Complete Panel Version 2 (Female). By Baylor Miraca Genetics Laboratories (United States). RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, BTK , (...) View the complete list with 139 more genes Panel complete gene list RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, BTK, TGM1, TH, TTPA, UBE3A, UGT1A1, USH1C, USH2A, CLRN1, WAS, MCOLN1, NPHS2, CDH23, PCDH15, CAPN3, CBS, HPS3, LRPPRC, RTEL1, MLC1, DCLRE1C, ADA, CFTR, CHAT, POMGNT1, CHRNE, SUMF1, DHDDS, TPP1, CLN3, CLN5, CLN6, CLN8, ADAMTS2, COL4A3, CPT1A, ETHE1, CPT2, GNE, MMACHC, TMEM216, CTNS, CTSK, CYBB, CYP1B1, CYP27A1, BBS10, DOK7, DBT, DHCR7, DLD, DMD, GNPTAB, DPYD, AGA, AGL, EIF2B5, AGXT, FAH, FANCC, FKTN, FH, FMR1, ALDH3A2, G6PC, G6PD, SLC37A4, GAA, GALC, GALT, ALDOB, GBA, GCDH, GJB2, GJB6, GLB1, GLDC, ALPL, GRHPR, AMT, HADHA, HBA1, HBA2, HBB, HEXA, HEXB, HMGCL, HSD17B4, IDUA, ABCC8, ELP1, IL2RG, ABCD1, IVD, LAMA3, LAMB3, LAMC2, MAN2B1, MECP2, ARSA, MPI, MPL, ASL, MTTP, ASPA, ASS1, MYO7A, NBN, NEB, NPC1, NPHP1, NPHS1, ATM, OCRL, OTC, PAH, PC, PCCA, PCCB, ATP7B, SLC26A4, PEX1, PEX7, ACADM, PHGDH, SERPINA1, PKHD1, PLA2G6, PMM2, POLG, ACADVL, PPT1, PROP1, BBS1, BBS2, PTS, PEX2, BCKDHA, RAPSN, BCKDHB Specificity 1 % Genes 100 %
GeneAware Complete Panel Version 2 (Male). By Baylor Miraca Genetics Laboratories (United States). RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, TGM1 , (...) View the complete list with 129 more genes Panel complete gene list RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, TGM1, TH, TTPA, UBE3A, UGT1A1, USH1C, USH2A, CLRN1, WAS, MCOLN1, NPHS2, CDH23, PCDH15, CAPN3, CBS, HPS3, LRPPRC, RTEL1, MLC1, DCLRE1C, ADA, CFTR, CHAT, POMGNT1, CHRNE, SUMF1, DHDDS, TPP1, CLN3, CLN5, CLN6, CLN8, ADAMTS2, COL4A3, CPT1A, ETHE1, CPT2, GNE, MMACHC, TMEM216, CTNS, CTSK, CYP1B1, CYP27A1, BBS10, DOK7, DBT, DHCR7, DLD, GNPTAB, DPYD, AGA, AGL, EIF2B5, AGXT, FAH, FANCC, FKTN, FH, ALDH3A2, G6PC, SLC37A4, GAA, GALC, GALT, ALDOB, GBA, GCDH, GJB2, GJB6, GLB1, GLDC, ALPL, GRHPR, AMT, HADHA, HBA1, HBA2, HBB, HEXA, HEXB, HMGCL, HSD17B4, IDUA, ABCC8, ELP1, IVD, LAMA3, LAMB3, LAMC2, MAN2B1, ARSA, MPI, MPL, ASL, MTTP, ASPA, ASS1, MYO7A, NBN, NEB, NPC1, NPHP1, NPHS1, ATM, PAH, PC, PCCA, PCCB, ATP7B, SLC26A4, PEX1, PEX7, ACADM, PHGDH, SERPINA1, PKHD1, PLA2G6, PMM2, POLG, ACADVL, PPT1, PROP1, BBS1, BBS2, PTS, PEX2, BCKDHA, RAPSN, BCKDHB Specificity 1 % Genes 100 %
Congenital Myasthenic Syndrome Advanced Sequencing Evaluation. By Athena Diagnostics Inc (United States). SCN4A, CHAT, CHRNA1, CHRNB1, CHRND, CHRNE, COLQ, DOK7, DPAGT1, AGRN, GFPT1, MUSK, RAPSN Specificity 8 % Genes 100 %
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 Panel complete gene list RYR1, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCE, SGCG, SLC25A4, SUCLA2, SUCLG1, TWNK, TCAP, TIA1, TK2, TNNI2, TNNT1, TPM2, TPM3, MYOT, TTN, UBA1, VCP, VRK1, ACTA1, RXYLT1, FBXL4, CACNA1S, SLC5A7, CCDC78, CAPN3, DNAJB6, CAV3, B4GAT1, LDB3, BSCL2, SELENON, LIMS2, MGME1, TRIM32, FIG4, SPEG, KLHL41, SYNE2, SYNE1, TNPO3, BICD2, RRM2B, FKRP, TRPV4, CFL2, CHAT, POMGNT1, CHKB, CHRNA1, CHRNB1, CHRND, CHRNE, CHRNG, POMT2, CLCN1, CNTN1, AGK, COL12A1, COL6A1, COL6A2, COL6A3, COLQ, GMPPB, GNE, CRYAB, SIL1, LAS1L, TRAPPC11, REEP1, POMGNT2, MTMR14, POMK, DOK7, DAG1, DCTN1, ANO5, DES, STAC3, TMEM43, B3GALNT2, SMCHD1, PLEKHG5, DMD, TOR1AIP1, DYNC1H1, MEGF10, DNM2, DNMT1, DPM1, DPM2, DPM3, HSPB8, KLHL40, PNPLA2, DYSF, TYMP, EMD, FKTN, FHL1, KBTBD13, ISPD, FLNC, GAA, GAN, GARS, GLE1, SETX, AMPD1, HINT1, HNRNPDL, HSPB1, IGHMBP2, ITGA7, LAMA2, LAMP2, LARGE1, LMNA, LMOD3, MATR3, MTM1, MUSK, MYF6, MYH2, MYH7, NEB, ATP2A1, PABPN1, ATP7A, PHKA1, PLEC, PMM2, POLG, POLG2, POMT1, BAG3, CAVIN1, PYGM, RAPSN 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 Panel complete gene list SKI, SLC18A3, TNNI2, TNNT3, TPM2, TPM3, UBA1, ZMPSTE24, ACTA1, ADGRG6, SLC5A7, KLHL41, FKBP10, NEK9, NALCN, CHAT, CHRNA1, CHRNB1, CHRND, CHRNE, CHRNG, SCARF2, SLC39A13, CNTN1, ANTXR2, COL3A1, ALG2, ADCY6, CHST14, ZC4H2, PIEZO2, DOK7, GLDN, DNM2, ECEL1, ZBTB42, ERBB3, ERCC6, FBN1, FBN2, GLE1, RIPK4, LMNA, MUSK, MYBPC1, MYH2, MYH3, MYH8, NEB, CNTNAP1, CHMP1A, PIP5K1C, PITX1, PLOD2, PLOD3, PSMB8, RAPSN Specificity 2 % Genes 100 %
Comprehensive Neuromuscular Panel. By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University (United States). RYR1, RYR2, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCE, SGCG, TCAP, TNNI2, TNNT1, TPM2, TPM3, MYOT, TTN, VCP, VRK1, ACTA1, CAPN3 , (...) View the complete list with 59 more genes Panel complete gene list RYR1, RYR2, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCE, SGCG, TCAP, TNNI2, TNNT1, TPM2, TPM3, MYOT, TTN, VCP, VRK1, ACTA1, CAPN3, CAV3, LDB3, BSCL2, SELENON, TRIM32, SYNE2, SYNE1, FKRP, CFL2, CHAT, POMGNT1, CHRNA1, CHRNB1, CHRND, CHRNE, CHRNG, POMT2, COL6A1, COL6A2, COL6A3, COLQ, GNE, CRYAB, SIL1, MTMR14, DOK7, DAG1, ANO5, DES, PLEKHG5, DMD, DNM2, DYSF, EMD, FKTN, FHL1, ISPD, FLNC, GAA, GLE1, AMPD1, IGHMBP2, ITGA7, LAMA2, LARGE1, LMNA, MTM1, MUSK, MYH2, MYH7, NEB, PABPN1, PLEC, PMM2, POMT1, BAG3, CAVIN1, PYGM, RAPSN Specificity 2 % Genes 100 %
Neuromuscular Disorders Sequencing Panel. By Genetic Services Laboratory University of Chicago (United States). RYR1, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCG, SNAP25, STIM1, SYT2, TCAP, TNNT1, TNXB, TPM2, TPM3, MYOT, TTN, VCP, ACTA1, RXYLT1 , (...) View the complete list with 91 more genes Panel complete gene list RYR1, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCG, SNAP25, STIM1, SYT2, TCAP, TNNT1, TNXB, TPM2, TPM3, MYOT, TTN, VCP, ACTA1, RXYLT1, CCDC78, CAPN3, DNAJB6, CAV3, B4GAT1, LDB3, SELENON, LIMS2, TRIM32, SPEG, KLHL41, SYNE2, SYNE1, TNPO3, FKRP, FKBP14, CFL2, CHAT, POMGNT1, CHKB, CHRNA1, CHRNB1, CHRND, CHRNE, POMT2, CNTN1, COL12A1, COL13A1, COL6A1, COL6A2, COL6A3, COLQ, GMPPB, ALG2, GNE, CRYAB, CHST14, SIL1, TRAPPC11, ORAI1, POMK, DOK7, DAG1, ANO5, DES, ALG14, STAC3, TMEM43, B3GALNT2, DMD, MEGF10, DNM2, DPAGT1, DPM1, DPM2, DPM3, PREPL, KLHL40, DYSF, AGRN, EMD, FKTN, FHL1, KBTBD13, ISPD, FLNC, GAA, GBE1, GFPT1, HNRNPDL, HRAS, ITGA7, LAMA2, LAMB2, LAMP2, LARGE1, LMNA, LMOD3, LRP4, MTM1, MUSK, MYF6, MYH2, MYH7, MYL2, NEB, PLEC, BAG3, HACD1, PYGM, RAPSN Specificity 1 % Genes 100 %
Congenital Myasthenic Syndrome Sequencing Panel. By Genetic Services Laboratory University of Chicago (United States). SCN4A, SNAP25, SYT2, CHAT, CHRNA1, CHRNB1, CHRND, CHRNE, COL13A1, COLQ, ALG2, DOK7, ALG14, DPAGT1, PREPL, AGRN, GFPT1, LRP4, MUSK, RAPSN Specificity 5 % Genes 100 %

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Sources and references

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