Human Gene Set: HP_HIPPOCAMPAL_MALROTATION


Standard name HP_HIPPOCAMPAL_MALROTATION
Systematic name M50895
Brief description Hippocampal malrotation
Full description or abstract Hippocampal malrotation, also termed incomplete inversion of the hippocampus or hippocampal malformation, is an increasingly recognized neuroimaging finding of undetermined clinical significance. It is characterized by features including (i) Round or pyramidal shape instead of ovoid shape; (ii) Medial position of the hippocampus on the hippocampal sulcus; (iii) The collateral sulcus is excessively deep or verticalized; (iv) Fimbria located medial to the hippocampus; (v) Small or displaced fornix; (vi) Enlarged temporal horn and empty choroid fissure; (vii) Thickened subiculum; (viii) Reduced upper horizontal portion of the parahippocampal gyrus. [PMID:33916495]
Collection C5: Ontology
      HPO: Human Phenotype Ontology
Source publication  
Exact source HP:0034396
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External links https://hpo.jax.org/app/browse/term/HP:0034396
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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 2026.1.Hs: Updated to HPO Release 2026-01-08.


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