Global developmental delay, and Sensory neuropathy

HSN2C is an autosomal recessive disorder characterized by onset in the first decade of progressive distal sensory loss leading to ulceration and amputation of the fingers and toes. Affected individuals also develop distal muscle weakness, primarily affecting the lower limbs (summary by Riviere et al., 2011).For a discussion of genetic heterogeneity of HSN, see HSAN1 (OMIM ).

• Global developmental delay
• Short stature
• Muscle weakness
• Peripheral neuropathy
• Areflexia

SOURCES: ORPHANET OMIM MENDELIAN

Hereditary cerebral hemorrhage with amyloidosis (HCHWA), Piedmont type is a form of HCHWA (see this term) characterized by an age of onset between 50-70 years of age, recurrent lobar intracerebral hemorrhages and cognitive decline.

ABETAL34V AMYLOIDOSIS Is also known as abetal34v-related amyloidosis|abeta amyloidosis, piedmont type|hchwa, piedmont type|hereditary cerebral hemorrhage with amyloidosis, piedmont type

• Intellectual disability
• Global developmental delay
• Behavioral abnormality
• Dementia
• Stroke

SOURCES: ORPHANET MENDELIAN

Charcot-Marie-Tooth disease type 4J is a subtype of Charcot-Marie-Tooth disease type 4 characterized by childhood- to adulthood-onset of variably severe, rapidly progressive, axonal and demyelinating sensorimotor neuropathy typically manifesting with delayed motor development, proximal and distal asymmetric muscle weakness and atrophy of the lower and upper extremities, severe motor dysfunction with mildly reduced sensory impairment, and areflexia. Nerve conduction velocities range from very mildly to severely reduced.

CHARCOT-MARIE-TOOTH DISEASE TYPE 4J Is also known as charcot-marie-tooth disease, autosomal recessive, type 4j|cmt4j

• Global developmental delay
• Muscle weakness
• Pain
• Motor delay
• Peripheral neuropathy

SOURCES: OMIM ORPHANET MESH MENDELIAN

X-linked Charcot-Marie-Tooth disease type 4 is a rare, genetic, axonal, peripheral sensorimotor neuropathy characterized by an X-linked recessive inheritance pattern and the neonatal- to early childhood-onset of severe, slowly progressive, distal muscle weakness and atrophy (in particular of the peroneal group), as well as sensory impairment (with the lower extremities being more affected than the upper extremities), pes cavus, areflexia and hammertoes. Sensorineural hearing loss and cognitive impairment may also be associated. Females are asymptomatic and do not display the phenotype.

X-LINKED CHARCOT-MARIE-TOOTH DISEASE TYPE 4 Is also known as neuropathy, axonal motor-sensory, with deafness and mental retardation|charcot-marie-tooth disease with deafness and mental retardation|cowchock syndrome|nadmr|cmt4x|namsd|charcot-marie-tooth disease, x-linked recessive, 4|cmtx4

• Intellectual disability
• Global developmental delay
• Hearing impairment
• Scoliosis
• Ataxia

SOURCES: ORPHANET OMIM MENDELIAN

Spastic paraplegia-optic atrophy-neuropathy (SPOAN) syndrome is a rare, complex type of hereditary spastic paraplegia characterized by early-onset progressive spastic paraplegia presenting in infancy, associated with optic atrophy, fixation nystagmus, polyneuropathy occurring in late childhood/early adolescence leading to severe motor disability and progressive joint contractures and scoliosis. SPOAN syndrome is caused by mutations in the KLC2 gene (11q13.1), encoding kinesin light chain 2.

SPASTIC PARAPLEGIA-OPTIC ATROPHY-NEUROPATHY SYNDROME Is also known as spoan|spg68|autosomal recessive spastic paraplegia type 68

• Global developmental delay
• Scoliosis
• Ataxia
• Nystagmus
• Pain

SOURCES: ORPHANET MESH OMIM MENDELIAN

MIGRAINE, FAMILIAL HEMIPLEGIC, 2; FHM2 Is also known as mhp2

• Intellectual disability
• Seizures
• Global developmental delay
• Hearing impairment
• Ataxia

SOURCES: OMIM MENDELIAN

MIGRAINE, FAMILIAL HEMIPLEGIC, 1; FHM1 Is also known as mhp1|fhm

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Hearing impairment

SOURCES: OMIM MENDELIAN

Charcot-Marie-Tooth disease type 2Z (CMT2Z) is an autosomal dominant peripheral neuropathy characterized by onset, usually in the first decade, of distal lower limb muscle weakness and sensory impairment. The disorder is progressive, and affected individuals tend to develop upper limb and proximal muscle involvement in an asymmetric pattern, resulting in severe disability late in adulthood (summary by Sevilla et al., 2016).For a phenotypic description and a discussion of genetic heterogeneity of axonal CMT, see CMT2A1 (OMIM ).

AUTOSOMAL DOMINANT CHARCOT-MARIE-TOOTH DISEASE TYPE 2Z Is also known as autosomal dominant charcot-marie-tooth disease type 2 due to morc2 mutation|cmt2z|charcot-marie-tooth disease, axonal, autosomal dominant, type 2z|charcot-marie-tooth neuropathy, type 2z

• Global developmental delay
• Generalized hypotonia
• Hearing impairment
• Scoliosis
• Muscle weakness

SOURCES: ORPHANET OMIM MENDELIAN

For a general phenotypic description and a discussion of genetic heterogeneity of Charcot-Marie-Tooth disease type 1, see CMT1B (OMIM ).CMT1A is the most common form of CMT. The average age of onset of clinical symptoms is 12.2 +/- 7.3 years. Slow nerve conduction velocity (NCV) less than 38 m/s is highly diagnostic and is a 100% penetrant phenotype independent of age ({36,39:Lupski et al., 1991, 1992}).

CHARCOT-MARIE-TOOTH DISEASE, DEMYELINATING, TYPE 1A; CMT1A Is also known as hereditary motor and sensory neuropathy ia|hmsn ia|charcot-marie-tooth neuropathy, type 1a|hmsn1a|charcot-marie-tooth disease, autosomal dominant, with focally folded myelin sheaths, type 1a

• Global developmental delay
• Hearing impairment
• Muscle weakness
• Motor delay
• Peripheral neuropathy

SOURCES: OMIM MENDELIAN

Paroxysmal exertion-induced dyskinesia (PED) is a form of paroxysmal dyskinesia (see this term), characterized by painless attacks of dystonia of the extremities triggered by prolonged physical activities.

PAROXYSMAL EXERTION-INDUCED DYSKINESIA Is also known as ped with or without epilepsy and/or hemolytic anemia|paroxysmal exertion-induced dystonia with or without epilepsy and/or hemolytic anemia|dyt18|dystonia 18|ped|paroxysmal exercise-induced dyskinesia with or without epilepsy and/or hemolytic anemia

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Microcephaly

SOURCES: ORPHANET OMIM MESH MENDELIAN