715800000: Charcot-Marie-Tooth disease type 4B2 (disorder)

• SNOMED CT Concept\Clinical finding (finding)\Disease\...
• \Genetic disease\Hereditary disease\...
• \Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary peripheral neuropathy\Hereditary motor and sensory neuropathy (disorder)\Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases. Type 4 is less common and often limited to certain ethnic groups. Patients present with the typical CMT phenotype along with typical features of progressive, distally accentuated weakness and atrophy of muscles innervated by the peroneal nerve in the lower limbs, followed by weakness and atrophy of hands, sensory loss, and characteristic foot abnormalities.\Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.
• \Autosomal hereditary disorder\Autosomal recessive hereditary disorder\Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases. Type 4 is less common and often limited to certain ethnic groups. Patients present with the typical CMT phenotype along with typical features of progressive, distally accentuated weakness and atrophy of muscles innervated by the peroneal nerve in the lower limbs, followed by weakness and atrophy of hands, sensory loss, and characteristic foot abnormalities.\Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.
• \Disorder of foetus and/or newborn\Congenital disease\Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases. Type 4 is less common and often limited to certain ethnic groups. Patients present with the typical CMT phenotype along with typical features of progressive, distally accentuated weakness and atrophy of muscles innervated by the peroneal nerve in the lower limbs, followed by weakness and atrophy of hands, sensory loss, and characteristic foot abnormalities.\Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.
• \Disorder of body system\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary peripheral neuropathy\Hereditary motor and sensory neuropathy (disorder)\Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases. Type 4 is less common and often limited to certain ethnic groups. Patients present with the typical CMT phenotype along with typical features of progressive, distally accentuated weakness and atrophy of muscles innervated by the peroneal nerve in the lower limbs, followed by weakness and atrophy of hands, sensory loss, and characteristic foot abnormalities.\Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.
• \Disorder of body system\Disorder of nervous system (disorder)\Hereditary disorder of nervous system\Hereditary peripheral neuropathy\Hereditary motor and sensory neuropathy (disorder)\Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases. Type 4 is less common and often limited to certain ethnic groups. Patients present with the typical CMT phenotype along with typical features of progressive, distally accentuated weakness and atrophy of muscles innervated by the peroneal nerve in the lower limbs, followed by weakness and atrophy of hands, sensory loss, and characteristic foot abnormalities.\Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.
• \Disorder of body system\Disorder of nervous system (disorder)\Disorder of the peripheral nervous system\Hereditary peripheral neuropathy\Hereditary motor and sensory neuropathy (disorder)\Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases. Type 4 is less common and often limited to certain ethnic groups. Patients present with the typical CMT phenotype along with typical features of progressive, distally accentuated weakness and atrophy of muscles innervated by the peroneal nerve in the lower limbs, followed by weakness and atrophy of hands, sensory loss, and characteristic foot abnormalities.\Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jul 2016. Module: SNOMED CT core

Descriptions:

Id	Description	Lang	Type	Status	Case?	Module
3303757010	Charcot-Marie-Tooth disease, type 4B2 (CMT4B2) is a severe early-onset demyelinating CMT peripheral sensorimotor polyneuropathy. Clinically and pathologically very similar to Charcot-Marie-Tooth type 4B1 with childhood-onset of muscle weakness, sensory loss, reduced nerve conduction velocities, characteristic myelin outfoldings and a severe disease course. However, in addition to the severe neuropathy, patients from some CMT4B2 families also develop early-onset glaucoma. Caused by mutations in the MTMR13/SBF2 gene encoding a protein involved in polyphosphoinositide signaling. Transmitted in an autosomal recessive manner.	en	Definition	Inactive	Entire term case sensitive (core metadata concept)	SNOMED CT core
5401106012	Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterized by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
5401107015	Charcot-Marie-Tooth disease type 4B2 (CMT4B2) is a subtype of Charcot-Marie-Tooth type 4 characterised by a severe, early childhood-onset of demyelinating sensorimotor neuropathy, early-onset glaucoma, focally folded myelin sheaths in the peripheral nerves, severely reduced nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Severe visual impairment leading to visual loss has also been reported.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
3303755019	Charcot-Marie-Tooth disease type 4B2 (disorder)	en	Fully specified name	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
3303756018	Charcot-Marie-Tooth disease type 4B2	en	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core

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