Human Phenotype Ontology 
Grandparent Node:
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Abnormal erythrocyte morphology (HP:0001877)help
Parent Node:
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Abnormal mean corpuscular volume (HP:0025065)help
..Starting node
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Decreased mean corpuscular volume (HP:0025066)help
Term ID: 25066
Name: Decreased mean corpuscular volume
Synonym: Decreased MCV; Microcytosis; Reduced erythrocyte volume
Definition: A reduction from normal of the mean corpuscular volume, or mean cell volume (MCV) of red blood cells (usually defined as an MCV below 80 femtoliters).
Comments:
Reference: HP:0025066
Genes and Diseases:
 
       Child Nodes:

 Sister Nodes: 
..expandIncreased mean corpuscular volume (HP:0005518) help
InputHPO IDHPO termDistanceGeneGene id entrezHGNC IDDiseaseIdDiseaseNameFrequencyOnsetHGMD variantsClinVar variants
 
HPO disease - gene - phenotype typical associations:
 
HPO disease - gene - phenotype less frequent non-typical associations:
HP:0025066HP:0025066Decreased mean corpuscular volume0GLRX5 CL E G H5121820134OMIM:616860Anemia, sideroblastic, 3, pyridoxine-refractory17
HP:0025066HP:0025066Decreased mean corpuscular volume0HBB CL E G H30434827ORPHA:231222Beta-thalassemia intermediaHP:0040281 - Very frequent580
HP:0025066HP:0025066Decreased mean corpuscular volume0HBB CL E G H30434827ORPHA:231214Beta-thalassemia majorHP:0040281 - Very frequent580
HP:0025066HP:0025066Decreased mean corpuscular volume0HBB CL E G H30434827ORPHA:231226Dominant beta-thalassemiaHP:0040282 - Frequent580
HP:0025066HP:0025066Decreased mean corpuscular volume0HBB CL E G H30434827ORPHA:90039Hemoglobin D disease580
HP:0025066HP:0025066Decreased mean corpuscular volume0HBB CL E G H30434827ORPHA:2133Hemoglobin E diseaseHP:0040281 - Very frequent580
HP:0025066HP:0025066Decreased mean corpuscular volume0LPIN2 CL E G H966314450OMIM:609628MAJEED SYNDROME; MJDS186
HP:0025066HP:0025066Decreased mean corpuscular volume0NHLRC2 CL E G H37435424731OMIM:618278Fibrosis, neurodegeneration, and cerebral angiomatosis.
HP:0025066HP:0025066Decreased mean corpuscular volume0SLC11A2 CL E G H489110908OMIM:206100Anemia, hypochromic microcytic, with iron overload 1.60
HP:0025066HP:0025066Decreased mean corpuscular volume0SLC25A38 CL E G H5497726054OMIM:205950Anemia, sideroblastic, 2, pyridoxine-refractory.41
HP:0025066HP:0025066Decreased mean corpuscular volume0SLC4A1 CL E G H652111027OMIM:611590Renal tubular acidosis, distal, with hemolytic anemiaHP:0040283 - Occasional109
HP:0025066HP:0025066Decreased mean corpuscular volume0SPTB CL E G H671011274OMIM:617948ELLIPTOCYTOSIS 3; EL3156
HP:0025066HP:0025066Decreased mean corpuscular volume0STEAP3 CL E G H5524024592OMIM:615234Anemia, hypochromic microcytic, with iron overload 2.1
HP:0025066HP:0025066Decreased mean corpuscular volume0STEAP3 CL E G H5524024592ORPHA:300298Severe congenital hypochromic anemia with ringed sideroblastsHP:0040282 - Frequent1
HP:0025066HP:0025066Decreased mean corpuscular volume0TRNT1 CL E G H5109517341OMIM:616959Retinitis pigmentosa and erythrocytic microcytosis28


Genes (10) :GLRX5 HBB LPIN2 NHLRC2 SLC11A2 SLC25A38 SLC4A1 SPTB STEAP3 TRNT1

Diseases (15) :OMIM:616860 ORPHA:231222 ORPHA:231214 ORPHA:231226 ORPHA:90039 ORPHA:2133 OMIM:609628 OMIM:618278 OMIM:206100 OMIM:205950 OMIM:611590 OMIM:617948 OMIM:615234 ORPHA:300298 OMIM:616959
 

Human Phenotype Ontology(HPO) is developed by the Human Phenotype Ontology Consortium. The version used here is December 15 2022 release.