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1.

Charcot-Marie-Tooth disease, type 2A

Charcot-Marie-Tooth hereditary neuropathy type 2A (CMT2A) is a classic axonal peripheral sensorimotor neuropathy characterized by earlier and more severe involvement of the lower extremities than the upper extremities, distal upper-extremity involvement as the neuropathy progresses, more prominent motor deficits than sensory deficits, and normal (>42 m/s) or only slightly decreased nerve conduction velocities (NCVs). Postural tremor is common. Most affected individuals develop symptoms in the first or second decade. It has recently been suggested that CMT2A represents more than 90% of the severe dominant CMT2 cases. However, milder late-onset cases and unusual presentations have also been described. [from GeneReviews]

MedGen UID:
389169
Concept ID:
C2079538
Disease or Syndrome
2.

Mitochondrial inheritance

A mode of inheritance that is observed for traits related to a gene encoded on the mitochondrial genome. Because the mitochondrial genome is essentially always maternally inherited, a mitochondrial condition can only be transmitted by females, although the condition can affect both sexes. The proportion of mutant mitochondria can vary (heteroplasmy). [from HPO]

MedGen UID:
165802
Concept ID:
C0887941
Genetic Function
3.

Peripheral neuropathy

Peripheral neuropathy is a general term for any disorder of the peripheral nervous system. The main clinical features used to classify peripheral neuropathy are distribution, type (mainly demyelinating versus mainly axonal), duration, and course. [from HPO]

MedGen UID:
141046
Concept ID:
C0442874
Disease or Syndrome
4.

Charcot-Marie-Tooth disease

Charcot-Marie-Tooth (CMT) hereditary neuropathy refers to a group of disorders characterized by a chronic motor and sensory polyneuropathy. The affected individual typically has distal muscle weakness and atrophy often associated with mild to moderate sensory loss, depressed tendon reflexes, and high-arched feet. [from GeneReviews]

MedGen UID:
2980
Concept ID:
C0007959
Disease or Syndrome
5.

Autosomal dominant Charcot-Marie-Tooth disease type 2

MedGen UID:
830983
Concept ID:
CN205435
Disease or Syndrome
6.

Charcot-Marie-Tooth disease type 1

Charcot-Marie-Tooth disease type 1 (CMT1) is a group of autosomal dominant demyelinating peripheral neuropathies characterized by distal weakness and atrophy, sensory loss, foot deformities, and slow nerve conduction velocity. [from ORDO]

MedGen UID:
830868
Concept ID:
CN205469
Disease or Syndrome
7.

De novo mutation

An alteration in a gene that is present for the first time in one family member as a result of a mutation in a germ cell (egg or sperm) of one of the parents, or a mutation that arises in the fertilized egg itself during early embryogenesis. [from NCI_NCI-GLOSS]

MedGen UID:
457665
Concept ID:
C2985439
Cell or Molecular Dysfunction
8.

Charcot-Marie-Tooth disease, type I

Charcot-Marie-Tooth (CMT) hereditary neuropathy refers to a group of disorders characterized by a chronic motor and sensory polyneuropathy. The affected individual typically has distal muscle weakness and atrophy often associated with mild to moderate sensory loss, depressed tendon reflexes, and high-arched feet. [from GeneReviews]

MedGen UID:
155486
Concept ID:
C0751036
Disease or Syndrome
9.

Unrelated

Not connected or associated e.g. by kinship. [from NCI]

MedGen UID:
99027
Concept ID:
C0445356
Finding
10.

Peripheral

On or near an edge or constituting an outer boundary; the outer area. (NCI) [from NCI_CDISC]

MedGen UID:
59959
Concept ID:
C0205100
Spatial Concept
11.

Inborn genetic diseases

Diseases that are caused by genetic mutations present during embryo or fetal development, although they may be observed later in life. The mutations may be inherited from a parent's genome or they may be acquired in utero. [from MeSH]

MedGen UID:
181981
Concept ID:
C0950123
Disease or Syndrome
12.

Heredodegenerative Disorders, Nervous System

Inherited disorders characterized by progressive atrophy and dysfunction of anatomically or physiologically related neurologic systems. [from MeSH]

MedGen UID:
155945
Concept ID:
C0751870
Disease or Syndrome
13.

Acquired Polyneuropathy

MedGen UID:
155861
Concept ID:
C0751449
Disease or Syndrome
14.

Polyneuropathy, Familial

MedGen UID:
155860
Concept ID:
C0751448
Disease or Syndrome
15.

Abnormality of the nervous system

Structural abnormalities of the central or peripheral nervous system resulting primarily from defects of embryogenesis. [from MeSH]

MedGen UID:
105425
Concept ID:
C0497552
Congenital Abnormality
16.

Neurodegenerative disease

Hereditary and sporadic conditions which are characterized by progressive nervous system dysfunction. These disorders are often associated with atrophy of the affected central or peripheral nervous system structures. [from MeSH]

MedGen UID:
101195
Concept ID:
C0524851
Disease or Syndrome
17.

Motor polyneuropathy

MedGen UID:
82885
Concept ID:
C0271683
Disease or Syndrome
18.

Cranioschisis

A congenital abnormality characterized by the failure of the bones of the skull to close. [from NCI]

MedGen UID:
78563
Concept ID:
C0265541
Congenital Abnormality
19.

Polyneuropathy

A generalized disorder of peripheral nerves. [from HPO]

MedGen UID:
57502
Concept ID:
C0152025
Disease or Syndrome
20.

Hereditary motor and sensory neuropathy

A group of slowly progressive inherited disorders affecting motor and sensory peripheral nerves. Subtypes include HMSNs I-VII. HMSN I and II both refer to CHARCOT-MARIE-TOOTH DISEASE. HMSN III refers to hypertrophic neuropathy of infancy. HMSN IV refers to REFSUM DISEASE. HMSN V refers to a condition marked by a hereditary motor and sensory neuropathy associated with spastic paraplegia (see SPASTIC PARAPLEGIA, HEREDITARY). HMSN VI refers to HMSN associated with an inherited optic atrophy (OPTIC ATROPHIES, HEREDITARY), and HMSN VII refers to HMSN associated with retinitis pigmentosa. (From Adams et al., Principles of Neurology, 6th ed, p1343) [from MeSH]

MedGen UID:
45066
Concept ID:
C0027888
Disease or Syndrome
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