Charcot-marie-tooth Disease, Axonal, Type 2b; Cmt2b

Description

Autosomal dominant Charcot-Marie-Tooth disease type 2B (CMT2B) is a severe form of axonal Charcot-Marie-Tooth disease, a peripheral sensorimotor neuropathy. CMT2B onset, in the 2nd or 3rd decade, is characterized by ulcerations and infections of feet. Symmetric and distal weakness develops mostly in the legs together with a severe symmetric distal sensory loss, tendon reflexes are only reduced at ankles and foot deformities, including pes cavus or planus and hammer toes, appear in childhood.

Clinical Features

Top most frequent phenotypes and symptoms related to Charcot-marie-tooth Disease, Axonal, Type 2b; Cmt2b

  • Scoliosis
  • Nystagmus
  • Peripheral neuropathy
  • Pain
  • Cerebellar atrophy
  • Hyporeflexia
  • Areflexia
  • Pes cavus
  • Diabetes mellitus
  • Pes planus
And another 19 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.


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Charcot-marie-tooth Disease, Axonal, Type 2b; Cmt2b Recommended genes panels

Panel Name, Specifity and genes Tested/covered
CMT Advanced Evaluation - Dominant.

By Athena Diagnostics Inc in United States.

GARS, MFN2, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2, HSPB1, YARS, DNM2
Specificity
8 %
Genes
100 %
CMT Advanced Evaluation - Dominant, Axonal.

By Athena Diagnostics Inc in United States.

GARS, MFN2, TRPV4, MPZ, NEFL, HSPB8, RAB7A, HSPB1, YARS, DNM2, LMNA
Specificity
10 %
Genes
100 %
CMT Advanced Evaluation - Comprehensive.

By Athena Diagnostics Inc in United States.

GARS, MFN2, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2, HSPB1, YARS , (...)

View the complete list with 3 more genes
Specificity
5 %
Genes
100 %
CMT Advanced Evaluation - Axonal.

By Athena Diagnostics Inc in United States.

GARS, MFN2, GDAP1, TRPV4, MPZ, NEFL, HSPB8, RAB7A, HSPB1, YARS, DNM2, LMNA, GJB1
Specificity
8 %
Genes
100 %
RAB7 (CMT2B) DNA Sequencing Test.

By Athena Diagnostics Inc in United States.

RAB7A
Specificity
100 %
Genes
100 %
CMT Advanced Evaluation - Nonprevalent.

By Athena Diagnostics Inc in United States.

GARS, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2, HSPB1, YARS, DNM2, LMNA , (...)

View the complete list with 1 more genes
Specificity
5 %
Genes
100 %
CMT Advanced Evaluation - Nonprevalent Axonal.

By Athena Diagnostics Inc in United States.

GARS, GDAP1, TRPV4, NEFL, HSPB8, RAB7A, HSPB1, YARS, DNM2, LMNA, GJB1
Specificity
10 %
Genes
100 %
Charcot-Marie-Tooth Hereditary Neuropathy Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center in United States.

GARS, KIF1B, MFN2, VCP, HARS, KARS, AIFM1, SURF1, NEFH, SLC12A6, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ , (...)

View the complete list with 34 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth Syndrome.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University in United States.

GARS, KIF1B, MFN2, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2, HSPB1 , (...)

View the complete list with 14 more genes
Specificity
3 %
Genes
100 %
Charcot Marie Tooth Panel.

By Molecular Genetics Laboratory London Health Sciences Centre in Canada.

TTR, GARS, KIF1B, MFN2, AIFM1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A , (...)

View the complete list with 14 more genes
Specificity
3 %
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 in United States.

ATP7A, FBLN5, GARS, KIF1B, MFN2, HARS, KARS, SPTLC2, REEP1, AIFM1, HEXA, HK1, ELP1, SLC12A6, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2 , (...)

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 in United States.

ATP7A, FBLN5, GARS, KIF1B, MFN2, HARS, KARS, SPTLC2, REEP1, AIFM1, HEXA, HK1, ELP1, SLC12A6, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2 , (...)

View the complete list with 58 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth.

By Human Genetics University Hospital Bern in Switzerland.

GARS, SEPT9, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, MPZ, PMP22, NEFL, LITAF, RAB7A, EGR2, YARS, DNM2, GJB1, BSCL2 , (...)

View the complete list with 2 more genes
Specificity
5 %
Genes
100 %
RAB7A. Complete sequencing.

By Instituto de Medicina Genomica Instituto de Medicina Genomica in Spain.

RAB7A
Specificity
100 %
Genes
100 %
Charcot-Marie-Tooth disease type 2B (CMT2B, sequence analysis of RAB7A gene).

By CGC Genetics in Portugal.

RAB7A
Specificity
100 %
Genes
100 %
Hereditary peripheral neuropathies, including Charcot-Marie-Tooth disease (NGS panel for 74 genes).

By CGC Genetics in Portugal.

TTR, ABHD12, TWNK, C12orf65, GARS, KIF1B, MFN2, KARS, SPTLC2, REEP1, TYMP, AIFM1, PHYH, HK1, SEPT9, ELP1, SLC12A6, NDRG1, SBF2, PRX , (...)

View the complete list with 54 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth disease (NGS panel for 43 genes).

By CGC Genetics in Portugal.

C12orf65, GARS, KIF1B, MFN2, KARS, AIFM1, HK1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8 , (...)

View the complete list with 23 more genes
Specificity
3 %
Genes
100 %
Hereditary Motor and Sensory Neuropathy IIB (HMSN2B) via RAB7A Gene Sequencing with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

RAB7A
Specificity
100 %
Genes
100 %
Charcot Marie Tooth - Comprehensive Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

FBLN5, GARS, MFN2, KARS, AIFM1, HK1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF , (...)

View the complete list with 25 more genes
Specificity
3 %
Genes
100 %
Charcot Marie Tooth - Axonal Neuropathy Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

GARS, MFN2, KARS, AIFM1, HK1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, NEFL, HSPB8, RAB7A, HSPB1, DNM2 , (...)

View the complete list with 18 more genes
Specificity
3 %
Genes
100 %
Hereditary Sensory and Autonomic Neuropathy Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

POLG, SPTLC2, FLVCR1, ELP1, RAB7A, NTRK1, WNK1, SPTLC1, ATL1, KIF1A, SCN9A, DNMT1, CCT5, DST, RETREG1, NGF, SCN11A, ATL3, CLTCL1, PRDM12
Specificity
5 %
Genes
100 %
Comprehensive Neuropathy Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

TTR, ATP7A, FBLN5, GARS, MFN2, KARS, SPTLC2, REEP1, AIFM1, HK1, ELP1, SLC12A6, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1 , (...)

View the complete list with 51 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth disease Deletion / Duplication panel.

By Connective Tissue Gene Tests in United States.

C12orf65, GARS, KIF1B, MFN2, KARS, HADHB, AIFM1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8 , (...)

View the complete list with 23 more genes
Specificity
3 %
Genes
100 %
Charcot-Marie-Tooth disease NGS panel.

By Connective Tissue Gene Tests in United States.

C12orf65, GARS, KIF1B, MFN2, KARS, HADHB, AIFM1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8 , (...)

View the complete list with 23 more genes
Specificity
3 %
Genes
100 %
Charcot-Marie-Tooth disease Comprehensive panel.

By Connective Tissue Gene Tests in United States.

C12orf65, GARS, KIF1B, MFN2, KARS, HADHB, AIFM1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8 , (...)

View the complete list with 23 more genes
Specificity
3 %
Genes
100 %
Neuropathy.

By MGZ Medical Genetics Center in Germany.

TTR, ABHD12, ATP7A, C12orf65, GAA, FBLN5, OPTN, AMACR, POLG, GARS, MFN2, HADHA, VCP, HARS, KARS, SPTLC2, REEP1, HADHB, TYMP, SQSTM1 , (...)

View the complete list with 102 more genes
Specificity
1 %
Genes
100 %
Charcot-Marie-Tooth Neuropathy Type 2B.

By MGZ Medical Genetics Center in Germany.

RAB7A
Specificity
100 %
Genes
100 %
Charcot Marie Tooth Type 2 Panel.

By FirmaLab in United States.

GARS, KIF1B, MFN2, GDAP1, TRPV4, MPZ, NEFL, HSPB8, RAB7A, HSPB1, YARS, DNM2, LMNA, AARS, MED25
Specificity
7 %
Genes
100 %
CMT2B.

By Centogene AG - the Rare Disease Company in Germany.

RAB7A
Specificity
100 %
Genes
100 %
AllNeuro panel.

By Centogene AG - the Rare Disease Company in Germany.

F2, F5, FMR1, HTT, HFE, MTHFR, TTR, UBE3A, VHL, PTEN, AARS2, ABHD12, ACACA, ACAD9, ACADL, ACADM, ACADS, AGL, ACADVL, ACAT1 , (...)

View the complete list with 1185 more genes
Specificity
1 %
Genes
100 %
Charcot-Marie-Tooth and Sensory Neuropathies Panel.

By CeGaT GmbH in Germany.

TTR, ABHD12, TWNK, C12orf65, FBLN5, OPA1, POLG, GARS, KIF1B, MFN2, HADHA, HARS, KARS, SPTLC2, REEP1, HADHB, TYMP, AIFM1, SURF1, HK1 , (...)

View the complete list with 64 more genes
Specificity
2 %
Genes
100 %
RAB7 - Gene sequencing.

By Clinical Genetics Academic Medical Center in Netherlands.

RAB7A
Specificity
100 %
Genes
100 %
Charcot-Marie-Tooth Disease.

By Asper Biogene Asper Biogene LLC in Estonia.

C12orf65, POLG, GARS, KIF1B, MFN2, VCP, HARS, KARS, SPTLC2, REEP1, TYMP, AIFM1, SURF1, NAGLU, HK1, ARSA, NDRG1, SBF2, PRX, FIG4 , (...)

View the complete list with 47 more genes
Specificity
2 %
Genes
100 %
Invitae Comprehensive Neuropathies Panel.

By Invitae in United States.

TTR, ATP7A, GARS, MFN2, HARS, SPTLC2, REEP1, AIFM1, ELP1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22 , (...)

View the complete list with 50 more genes
Specificity
2 %
Genes
100 %
Invitae Hereditary Sensory and Autonomic Neuropathy Panel.

By Invitae in United States.

SPTLC2, ELP1, RAB7A, NTRK1, WNK1, SPTLC1, ATL1, KIF1A, SCN9A, DNMT1, DST, RETREG1, NGF, SCN11A, ATL3
Specificity
7 %
Genes
100 %
Invitae Charcot-Marie-Tooth Disease Comprehensive Panel.

By Invitae in United States.

GARS, MFN2, HARS, AIFM1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2 , (...)

View the complete list with 22 more genes
Specificity
3 %
Genes
100 %
Invitae Charcot-Marie-Tooth Disease Autosomal Dominant Panel.

By Invitae in United States.

GARS, MFN2, HARS, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2, HSPB1, YARS, DNM2, LMNA, INF2, BSCL2, DYNC1H1, MORC2 , (...)

View the complete list with 4 more genes
Specificity
5 %
Genes
100 %
CHARCOT- MARIE TOOTH.

By GENETAQ Molecular Genetics Centre and Diagnosis of Rare Diseases in Spain.

GARS, KIF1B, MFN2, HK1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2 , (...)

View the complete list with 12 more genes
Specificity
4 %
Genes
100 %
Hereditary Neuropathies: Sequencing Panel.

By EGL Genetic Diagnostics Eurofins Clinical Diagnostics in United States.

TTR, ATP7A, TWNK, PRKCG, POLG, GARS, KIF1B, MFN2, SPTLC2, COQ8A, REEP1, SPG7, ALDH3A2, PHYH, FXN, APTX, ELP1, GLA, PLP1, ATM , (...)

View the complete list with 70 more genes
Specificity
2 %
Genes
100 %
Hereditary Neuropathies: Deletion/Duplication Panel.

By EGL Genetic Diagnostics Eurofins Clinical Diagnostics in United States.

TTR, ATP7A, TWNK, PRKCG, POLG, GARS, KIF1B, MFN2, SPTLC2, COQ8A, REEP1, SPG7, ALDH3A2, PHYH, FXN, APTX, ELP1, GLA, PLP1, ATM , (...)

View the complete list with 70 more genes
Specificity
2 %
Genes
100 %
Hereditary Neuropathies NGS Panel.

By Fulgent Genetics Fulgent Genetics in United States.

TTR, GARS, KIF1B, MFN2, SPTLC2, GLA, NDRG1, SBF2, PRX, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A , (...)

View the complete list with 13 more genes
Specificity
4 %
Genes
100 %
Charcot Marie Tooth Disease Extended NGS Panel.

By Fulgent Genetics Fulgent Genetics in United States.

TTR, ATP7A, GARS, KIF1B, MFN2, SPTLC2, REEP1, ELP1, GLA, SLC12A6, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ , (...)

View the complete list with 29 more genes
Specificity
3 %
Genes
100 %
RAB7A.

By Fulgent Genetics Fulgent Genetics in United States.

RAB7A
Specificity
100 %
Genes
100 %
Charcot-Marie-Tooth Neuropathy Panel.

By Blueprint Genetics in Finland.

TTR, ATP7A, C12orf65, FBLN5, AMACR, GNE, POLG, GARS, KIF1B, MFN2, VCP, HARS, KARS, SPTLC2, REEP1, HADHB, TYMP, AIFM1, SURF1, HK1 , (...)

View the complete list with 78 more genes
Specificity
2 %
Genes
100 %
Charcot-Marie-Tooth neuropathy type 2B.

By Bioarray in Spain.

RAB7A
Specificity
100 %
Genes
100 %
CHARCOT-MARIE-TOOTH DISEASE TYPE 2B.

By Laboratorio de Genetica Clinica SL in Spain.

RAB7A
Specificity
100 %
Genes
100 %
CHARCOT-MARIE-TOOTH : NGS PANEL.

By Laboratorio de Genetica Clinica SL in Spain.

GARS, KIF1B, MFN2, KARS, HK1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A , (...)

View the complete list with 14 more genes
Specificity
3 %
Genes
100 %
Charcot-Marie-Tooth neuropathy axonal autosomal dominant panel.

By LifeLabs Genetics in Canada.

RAB7A
Specificity
100 %
Genes
100 %
Charcot-Marie-Tooth DiseaseType 2B, Sequencing RAB7A Gene.

By Reference Laboratory Genetics in Spain.

RAB7A
Specificity
100 %
Genes
100 %
Hereditary Peripheral Neuropathy , Panel Massive Sequencing (NGS) 31 Genes.

By Reference Laboratory Genetics in Spain.

GARS, KIF1B, MFN2, PHYH, PEX7, SLC12A6, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF , (...)

View the complete list with 11 more genes
Specificity
4 %
Genes
100 %
Charcot-Marie-Tooth Disease, Panel Massive Sequencing (NGS) 32 Genes.

By Reference Laboratory Genetics in Spain.

GARS, KIF1B, MFN2, HK1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ, PMP22, NEFL, HSPB8, LITAF, RAB7A, EGR2 , (...)

View the complete list with 12 more genes
Specificity
4 %
Genes
100 %
Motor Neuron Disorder and Related Diseases , Panel Massive Sequencing (NGS) 49 Genes.

By Reference Laboratory Genetics in Spain.

ATP7A, OCRL, GARS, KIF1B, MFN2, VCP, KARS, REEP1, ELP1, SMN1, NDRG1, SBF2, PRX, FIG4, FGD4, SH3TC2, MTMR2, GDAP1, TRPV4, MPZ , (...)

View the complete list with 29 more genes
Specificity
3 %
Genes
100 %
Charcot-Marie-Tooth Disease Type 2 , Panel Massive Sequencing (NGS) 20 Genes.

By Reference Laboratory Genetics in Spain.

GARS, KIF1B, MFN2, HARS, NAGLU, GDAP1, TRPV4, MPZ, NEFL, HSPB8, RAB7A, HSPB1, DNM2, LMNA, DYNC1H1, IGHMBP2, MME, LRSAM1, AARS, MED25
Specificity
5 %
Genes
100 %

Alternate names

Charcot-marie-tooth Disease, Axonal, Type 2b; Cmt2b Is also known as charcot-marie-tooth disease, autosomal dominant, type 2b, charcot-marie-tooth neuropathy, type 2b, hereditary motor and sensory neuropathy iib;hmsn iib, hmsn2b;cmt2b.



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