Human Gene Set: HP_FIBER_TYPE_GROUPING


Standard name HP_FIBER_TYPE_GROUPING
Systematic name M46347
Brief description Fiber type grouping
Full description or abstract An abnormal distribution of muscle fiber types in muscle tissue. Human skeletal muscle contains at least two fiber types recognizable by histochemical techniques. In transverse sections of normal skeletal muscle, type 1 and type 2 fibers are distributed in a random fashion. Grouping of fibers of the same type can be seen in certain peripheral neuropathies, thought to be due to reinnervation of denervated muscle fibers by sprouting axons. With grouping, motor units enlarge. The fibers of a motor unit, which are normally scattered, come to lie adjacent to one another. Histochemical examination shows groups of muscle fibers of the same histochemical type. [PMID:32715519]
Collection C5: Ontology
      HPO: Human Phenotype Ontology
Source publication  
Exact source HP:0033685
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External links https://hpo.jax.org/app/browse/term/HP:0033685
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Source species Homo sapiens
Contributed by Human Phenotype Ontology Group (The Jackson Laboratory (JAX))
Source platform or
identifier namespace		 Human_NCBI_Gene_ID
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Version history 2026.2.Hs: Updated to HPO Release 2026-09-01.


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