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Distal hereditary motor neuronopathies (distal HMN, dHMN), sometimes also called distal hereditary motor neuropathies, are a genetically and clinically heterogeneous group of motor neuron diseases that result from genetic mutations in various genes and are characterized by degeneration and loss of motor neuron cells in the anterior horn of the spinal cord and subsequent muscle atrophy.
Distal spinal muscular atrophy type 2 (DSMA2), also known as Jerash type distal hereditary motor neuropathy (HMNJ), is a very rare childhood-onset genetic disorder characterised by progressive muscle wasting affecting lower and subsequently upper limbs.
In these disorders, a patient experiences progressive muscle atrophy and sensory neuropathy of the extremities. [2] The term "hereditary motor and sensory neuropathy" was used mostly historically to denote the more common forms Charcot–Marie–Tooth disease (CMT). With the identification of a wide number of genetically and phenotypically ...
Congenital distal spinal muscular atrophy (cDSMA), also known as distal hereditary motor neuropathy (or neuronopathy) type VIII (dHMN8), is a hereditary medical condition characterized by muscle wasting (), particularly of distal muscles in legs and hands, and by early-onset contractures (permanent shortening of a muscle or joint) of the hip, knee, and ankle.
Distal hereditary motor neuronopathy type 6 (DHMN6) 604320: IGHMBP2: 11q13.3: Autosomal recessive: Affects mainly infant boys, similar to SMA type 1 but with diaphragmatic paralysis Distal spinal muscular atrophy type 2 (DSMA2) Distal hereditary motor neuronopathy – Jerash type (DHMN-J) 605726: SIGMAR1: 19p13.3: Autosomal recessive: Slowly ...
Hereditary motor and sensory neuropathy with proximal dominance (HMSN-P) is an autosomal dominant neurodegenerative disorder that is defined by extensive involuntary and spontaneous muscle contractions, asthenia, and atrophy with distal sensory involvement following. The disease starts presenting typically in the 40s and is succeeded by a slow ...
Distal hereditary motor neuropathy type V is a particular type of neuropathic disorder. In general, distal hereditary motor neuropathies affect the axons of distal motor neurons and are characterized by progressive weakness and atrophy of muscles of the extremities. [ 1 ]
n/a Ensembl n/a n/a UniProt n a n/a RefSeq (mRNA) n/a n/a RefSeq (protein) n/a n/a Location (UCSC) n/a n/a PubMed search n/a Wikidata View/Edit Human Distal hereditary motor neuropathy, Jerash type is a protein that in humans is encoded by the HMNJ gene. References ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine. ^ "Entrez Gene ...