Human Phenotype Ontology 
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Abnormal lymphocyte morphology (HP:0004332)help
Grandparent Node:
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Leukopenia (HP:0001882)help
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Lymphopenia (HP:0001888)help
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T lymphocytopenia (HP:0005403)help
Term ID: 5403
Name: T lymphocytopenia
Synonym: Decrease in T cell count; Decrease in T cell number; Decreased numbers of circulating T cells; Low T cell count; Reduced number of T cells
Definition: An abnormally low count of T cells.
Comments:
Reference: HP:0005403
Genes and Diseases:
 
       Child Nodes:
........expandDecreased proportion of CD4-positive T cells (HP:0005407) help
........expandDecreased proportion of CD8-positive T cells (HP:0005415) help
................... HP:0005422 Absence of CD8-positive T cells
........expandDecreased proportion circulating T-helper cells (HP:0008165) help
........expandDecreased proportion of CD3-positive T cells (HP:0045080) help

 Sister Nodes: 
..expandB lymphocytopenia (HP:0010976) 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:0005403HP:0005403T lymphocytopenia0ACP5 CL E G H54124OMIM:607944Spondyloenchondrodysplasia with immune dysregulation.16
HP:0005403HP:0005403T lymphocytopenia0ADA CL E G H100186ORPHA:277Severe combined immunodeficiency due to adenosine deaminase deficiencyHP:0040282 - Frequent75
HP:0005403HP:0005403T lymphocytopenia0ATM CL E G H472795OMIM:208900ATAXIA-TELANGIECTASIA.3267
HP:0005403HP:0005403T lymphocytopenia0CASP10 CL E G H8431500ORPHA:3261Autoimmune lymphoproliferative syndrome87
HP:0005403HP:0005403T lymphocytopenia0CD247 CL E G H9191677OMIM:610163IMMUNODEFICIENCY 25; IMD258
HP:0005403HP:0005403T lymphocytopenia0CD3G CL E G H9171675OMIM:615607Immunodeficiency 1719
HP:0005403HP:0005403T lymphocytopenia0CD8A CL E G H9251706OMIM:608957Cd8 deficiency, familial4
HP:0005403HP:0005403T lymphocytopenia0CIITA CL E G H42617067ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040283 - Occasional118
HP:0005403HP:0005403T lymphocytopenia0DNMT3B CL E G H17892979OMIM:242860Immunodeficiency-Centromeric instability-facial anomalies syndrome.79
HP:0005403HP:0005403T lymphocytopenia0DOCK2 CL E G H17942988OMIM:616433Immunodeficiency 406
HP:0005403HP:0005403T lymphocytopenia0DOCK8 CL E G H8170419191ORPHA:217390Combined immunodeficiency due to DOCK8 deficiencyHP:0040281 - Very frequent217
HP:0005403HP:0005403T lymphocytopenia0DOCK8 CL E G H8170419191OMIM:243700Hyper-Ige recurrent infection syndrome, autosomal recessive217
HP:0005403HP:0005403T lymphocytopenia0EPG5 CL E G H5772429331OMIM:242840Vici syndrome40
HP:0005403HP:0005403T lymphocytopenia0EXTL3 CL E G H21373518ORPHA:508533Skeletal dysplasia-T-cell immunodeficiency-developmental delay syndromeHP:0040282 - Frequent3
HP:0005403HP:0005403T lymphocytopenia0FAS CL E G H35511920ORPHA:3261Autoimmune lymphoproliferative syndrome59
HP:0005403HP:0005403T lymphocytopenia0FASLG CL E G H35611936ORPHA:3261Autoimmune lymphoproliferative syndrome37
HP:0005403HP:0005403T lymphocytopenia0FCHO1 CL E G H2314929002OMIM:619164IMMUNODEFICIENCY 76; IMD76
HP:0005403HP:0005403T lymphocytopenia0FOXN1 CL E G H845612765ORPHA:169095Severe combined immunodeficiency due to FOXN1 deficiencyHP:0040281 - Very frequent54
HP:0005403HP:0005403T lymphocytopenia0FOXN1 CL E G H845612765OMIM:601705T-CELL IMMUNODEFICIENCY, CONGENITAL ALOPECIA, AND NAIL DYSTROPHY.54
HP:0005403HP:0005403T lymphocytopenia0FOXN1 CL E G H845612765OMIM:618806T-CELL LYMPHOPENIA, INFANTILE, WITH OR WITHOUT NAIL DYSTROPHY, AUTOSOMAL DOMINANT; TLIND54
HP:0005403HP:0005403T lymphocytopenia0IKBKB CL E G H35515960OMIM:618204IMMUNODEFICIENCY 15A; IMD15A4
HP:0005403HP:0005403T lymphocytopenia0IL2RA CL E G H35596008OMIM:606367IMMUNODEFICIENCY 41 WITH LYMPHOPROLIFERATION AND AUTOIMMUNITY; IMD4165
HP:0005403HP:0005403T lymphocytopenia0IL2RG CL E G H35616010OMIM:312863Combined immunodeficiency, X-linked48
HP:0005403HP:0005403T lymphocytopenia0IL2RG CL E G H35616010OMIM:300400Severe combined immunodeficiency, X-linked48
HP:0005403HP:0005403T lymphocytopenia0IL2RG CL E G H35616010ORPHA:276T-B+ severe combined immunodeficiency due to gamma chain deficiency48
HP:0005403HP:0005403T lymphocytopenia0IL7 CL E G H35746023OMIM:618309EPIDERMODYSPLASIA VERRUCIFORMIS, SUSCEPTIBILITY TO, 5; EV5
HP:0005403HP:0005403T lymphocytopenia0IL7R CL E G H35756024OMIM:608971Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-positive, NK cell-positive94
HP:0005403HP:0005403T lymphocytopenia0IL7R CL E G H35756024ORPHA:169154T-B+ severe combined immunodeficiency due to IL-7Ralpha deficiencyHP:0040282 - Frequent94
HP:0005403HP:0005403T lymphocytopenia0ITK CL E G H37026171OMIM:613011LYMPHOPROLIFERATIVE SYNDROME 1; LPFS151
HP:0005403HP:0005403T lymphocytopenia0IVNS1ABP CL E G H1062516951OMIM:618969IMMUNODEFICIENCY 70; IMD70
HP:0005403HP:0005403T lymphocytopenia0JAK3 CL E G H37186193OMIM:600802Scid, autosomal recessive, T-Negative/b-Positive type140
HP:0005403HP:0005403T lymphocytopenia0JAK3 CL E G H37186193ORPHA:35078T-B+ severe combined immunodeficiency due to JAK3 deficiencyHP:0040281 - Very frequent140
HP:0005403HP:0005403T lymphocytopenia0KNSTRN CL E G H9041730767ORPHA:221139Combined immunodeficiency with faciooculoskeletal anomalies1
HP:0005403HP:0005403T lymphocytopenia0LCK CL E G H39326524OMIM:615758Immunodeficiency 221
HP:0005403HP:0005403T lymphocytopenia0LEP CL E G H39526553ORPHA:66628Obesity due to congenital leptin deficiency47
HP:0005403HP:0005403T lymphocytopenia0LEPR CL E G H39536554ORPHA:179494Obesity due to leptin receptor gene deficiency46
HP:0005403HP:0005403T lymphocytopenia0MAGT1 CL E G H8406128880OMIM:300853IMMUNODEFICIENCY, X-LINKED, WITH MAGNESIUM DEFECT, EPSTEIN-BARR VIRUS INFECTION, AND NEOPLASIA; XMEN17
HP:0005403HP:0005403T lymphocytopenia0MCM10 CL E G H5538818043OMIM:619313IMMUNODEFICIENCY 80 WITH OR WITHOUT CONGENITAL CARDIOMYOPATHY; IMD80
HP:0005403HP:0005403T lymphocytopenia0MYC CL E G H46097553ORPHA:543Burkitt lymphoma11
HP:0005403HP:0005403T lymphocytopenia0NBN CL E G H46837652OMIM:251260Nijmegen breakage syndrome.706
HP:0005403HP:0005403T lymphocytopenia0NHEJ1 CL E G H7984025737ORPHA:169079Cernunnos-XLF deficiencyHP:0040281 - Very frequent20
HP:0005403HP:0005403T lymphocytopenia0NSMCE3 CL E G H561607677OMIM:617241LUNG DISEASE, IMMUNODEFICIENCY, AND CHROMOSOME BREAKAGE SYNDROME; LICS2
HP:0005403HP:0005403T lymphocytopenia0PGM3 CL E G H52388907ORPHA:443811PGM3-CDGHP:0040282 - Frequent15
HP:0005403HP:0005403T lymphocytopenia0PIK3CD CL E G H52938977ORPHA:221139Combined immunodeficiency with faciooculoskeletal anomalies9
HP:0005403HP:0005403T lymphocytopenia0PIK3CD CL E G H52938977OMIM:615513IMMUNODEFICIENCY 14; IMD149
HP:0005403HP:0005403T lymphocytopenia0PIK3CG CL E G H52948978OMIM:619802IMMUNODEFICIENCY 97 WITH AUTOINFLAMMATION; IMD972
HP:0005403HP:0005403T lymphocytopenia0PRKCD CL E G H55809399ORPHA:3261Autoimmune lymphoproliferative syndrome10
HP:0005403HP:0005403T lymphocytopenia0PTPRC CL E G H57889666OMIM:61992425
HP:0005403HP:0005403T lymphocytopenia0RAC2 CL E G H58809802OMIM:618986IMMUNODEFICIENCY 73B WITH DEFECTIVE NEUTROPHIL CHEMOTAXIS AND LYMPHOPENIA; IMD73B9
HP:0005403HP:0005403T lymphocytopenia0RAG1 CL E G H58969831OMIM:233650Combined cellular and humoral immune defects with granulomas.127
HP:0005403HP:0005403T lymphocytopenia0RAG1 CL E G H58969831ORPHA:231154Combined immunodeficiency due to partial RAG1 deficiencyHP:0040281 - Very frequent127
HP:0005403HP:0005403T lymphocytopenia0RAG1 CL E G H58969831OMIM:601457Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-positive.127
HP:0005403HP:0005403T lymphocytopenia0RAG2 CL E G H58979832OMIM:233650Combined cellular and humoral immune defects with granulomas.50
HP:0005403HP:0005403T lymphocytopenia0RAG2 CL E G H58979832OMIM:601457Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-positive.50
HP:0005403HP:0005403T lymphocytopenia0RASGRP1 CL E G H101259878ORPHA:3261Autoimmune lymphoproliferative syndrome
HP:0005403HP:0005403T lymphocytopenia0RFX5 CL E G H59939986ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040283 - Occasional38
HP:0005403HP:0005403T lymphocytopenia0RFXANK CL E G H86259987ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040283 - Occasional26
HP:0005403HP:0005403T lymphocytopenia0RFXAP CL E G H59949988ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040283 - Occasional34
HP:0005403HP:0005403T lymphocytopenia0RIPK1 CL E G H873710019OMIM:618108IMMUNODEFICIENCY 57; IMD57
HP:0005403HP:0005403T lymphocytopenia0SASH3 CL E G H5444015975OMIM:3010821
HP:0005403HP:0005403T lymphocytopenia0SP110 CL E G H34315401ORPHA:79124Hepatic veno-occlusive disease-immunodeficiency syndromeHP:0040282 - Frequent49
HP:0005403HP:0005403T lymphocytopenia0SYK CL E G H685011491OMIM:619381IMMUNODEFICIENCY 82 WITH SYSTEMIC INFLAMMATION; IMD821
HP:0005403HP:0005403T lymphocytopenia0TOM1 CL E G H1004311982OMIM:619510IMMUNODEFICIENCY 85 AND AUTOIMMUNITY; IMD85
HP:0005403HP:0005403T lymphocytopenia0UNC119 CL E G H909412565OMIM:615518IMMUNODEFICIENCY 13; IMD1330
HP:0005403HP:0005403T lymphocytopenia0WAS CL E G H745412731OMIM:301000Wiskott-Aldrich syndrome65
HP:0005403HP:0005403T lymphocytopenia0WIPF1 CL E G H745612736OMIM:614493WISKOTT-ALDRICH SYNDROME 2; WAS26
HP:0005403HP:0005403T lymphocytopenia0ZAP70 CL E G H753512858ORPHA:911Combined immunodeficiency due to ZAP70 deficiency46
HP:0005403HP:0005403T lymphocytopenia0ZAP70 CL E G H753512858OMIM:269840SELECTIVE T-CELL DEFECT46
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1ATM CL E G H472795OMIM:208900ATAXIA-TELANGIECTASIA.3267
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1CASP10 CL E G H8431500ORPHA:3261Autoimmune lymphoproliferative syndromeHP:0040283 - Occasional87
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1CD3G CL E G H9171675OMIM:615607Immunodeficiency 17.19
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1CD8A CL E G H9251706OMIM:608957Cd8 deficiency, familial4
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1CIITA CL E G H42617067ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040282 - Frequent118
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1DOCK8 CL E G H8170419191OMIM:243700Hyper-Ige recurrent infection syndrome, autosomal recessive217
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1EPG5 CL E G H5772429331OMIM:242840Vici syndrome.40
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1EXTL3 CL E G H21373518ORPHA:508533Skeletal dysplasia-T-cell immunodeficiency-developmental delay syndromeHP:0040283 - Occasional3
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1EXTL3 CL E G H21373518ORPHA:508533Skeletal dysplasia-T-cell immunodeficiency-developmental delay syndromeHP:0040283 - Occasional3
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1FAS CL E G H35511920ORPHA:3261Autoimmune lymphoproliferative syndromeHP:0040283 - Occasional59
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1FASLG CL E G H35611936ORPHA:3261Autoimmune lymphoproliferative syndromeHP:0040283 - Occasional37
HP:0005403HP:0008165Decreased helper T cell proportion1FOXN1 CL E G H845612765OMIM:601705T-CELL IMMUNODEFICIENCY, CONGENITAL ALOPECIA, AND NAIL DYSTROPHY.54
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1IKBKB CL E G H35515960OMIM:618204IMMUNODEFICIENCY 15A; IMD15A4
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1IKBKB CL E G H35515960OMIM:618204IMMUNODEFICIENCY 15A; IMD15A4
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1IL2RG CL E G H35616010OMIM:312863Combined immunodeficiency, X-linked.48
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1IL2RG CL E G H35616010OMIM:312863Combined immunodeficiency, X-linked.48
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1IL2RG CL E G H35616010ORPHA:276T-B+ severe combined immunodeficiency due to gamma chain deficiencyHP:0040281 - Very frequent48
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1IL7R CL E G H35756024ORPHA:169154T-B+ severe combined immunodeficiency due to IL-7Ralpha deficiencyHP:0040282 - Frequent94
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1IL7R CL E G H35756024ORPHA:169154T-B+ severe combined immunodeficiency due to IL-7Ralpha deficiencyHP:0040282 - Frequent94
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1ITK CL E G H37026171OMIM:613011LYMPHOPROLIFERATIVE SYNDROME 1; LPFS151
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1IVNS1ABP CL E G H1062516951OMIM:618969IMMUNODEFICIENCY 70; IMD70
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1KNSTRN CL E G H9041730767ORPHA:221139Combined immunodeficiency with faciooculoskeletal anomaliesHP:0040282 - Frequent1
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1LCK CL E G H39326524OMIM:615758Immunodeficiency 22.1
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1LEP CL E G H39526553ORPHA:66628Obesity due to congenital leptin deficiencyHP:0040281 - Very frequent47
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1LEPR CL E G H39536554ORPHA:179494Obesity due to leptin receptor gene deficiencyHP:0040281 - Very frequent46
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1MAGT1 CL E G H8406128880OMIM:300853IMMUNODEFICIENCY, X-LINKED, WITH MAGNESIUM DEFECT, EPSTEIN-BARR VIRUS INFECTION, AND NEOPLASIA; XMEN17
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1MYC CL E G H46097553ORPHA:543Burkitt lymphomaHP:0040283 - Occasional11
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1NSMCE3 CL E G H561607677OMIM:617241LUNG DISEASE, IMMUNODEFICIENCY, AND CHROMOSOME BREAKAGE SYNDROME; LICS2
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1NSMCE3 CL E G H561607677OMIM:617241LUNG DISEASE, IMMUNODEFICIENCY, AND CHROMOSOME BREAKAGE SYNDROME; LICS2
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1PGM3 CL E G H52388907ORPHA:443811PGM3-CDGHP:0040281 - Very frequent15
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1PIK3CD CL E G H52938977ORPHA:221139Combined immunodeficiency with faciooculoskeletal anomaliesHP:0040282 - Frequent9
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1PIK3CG CL E G H52948978OMIM:619802IMMUNODEFICIENCY 97 WITH AUTOINFLAMMATION; IMD972
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1PRKCD CL E G H55809399ORPHA:3261Autoimmune lymphoproliferative syndromeHP:0040283 - Occasional10
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1RASGRP1 CL E G H101259878ORPHA:3261Autoimmune lymphoproliferative syndromeHP:0040283 - Occasional
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1RFX5 CL E G H59939986ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040282 - Frequent38
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1RFXANK CL E G H86259987ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040282 - Frequent26
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1RFXAP CL E G H59949988ORPHA:572Immunodeficiency by defective expression of MHC class IIHP:0040282 - Frequent34
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1SASH3 CL E G H5444015975OMIM:3010821
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1TOM1 CL E G H1004311982OMIM:619510IMMUNODEFICIENCY 85 AND AUTOIMMUNITY; IMD85
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1UNC119 CL E G H909412565OMIM:615518IMMUNODEFICIENCY 13; IMD1330
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1WAS CL E G H745412731OMIM:301000Wiskott-Aldrich syndrome65
HP:0005403HP:0005407Decreased proportion of CD4-positive helper T cells1WAS CL E G H745412731OMIM:301000Wiskott-Aldrich syndrome65
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1WIPF1 CL E G H745612736OMIM:614493WISKOTT-ALDRICH SYNDROME 2; WAS26
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1ZAP70 CL E G H753512858ORPHA:911Combined immunodeficiency due to ZAP70 deficiencyHP:0040282 - Frequent46
HP:0005403HP:0005415Decreased proportion of CD8-positive T cells1ZAP70 CL E G H753512858OMIM:269840SELECTIVE T-CELL DEFECT46
HP:0005403HP:0005422Absence of CD8-positive T cells2CD8A CL E G H9251706OMIM:608957Cd8 deficiency, familial.4
HP:0005403HP:0005422Absence of CD8-positive T cells2ZAP70 CL E G H753512858ORPHA:911Combined immunodeficiency due to ZAP70 deficiencyHP:0040282 - Frequent46
HP:0005403HP:0005422Absence of CD8-positive T cells2ZAP70 CL E G H753512858OMIM:269840SELECTIVE T-CELL DEFECT46


Genes (56) :ACP5 ADA ATM CASP10 CD247 CD3G CD8A CIITA DNMT3B DOCK2 DOCK8 EPG5 EXTL3 FAS FASLG FCHO1 FOXN1 IKBKB IL2RA IL2RG IL7 IL7R ITK IVNS1ABP JAK3 KNSTRN LCK LEP LEPR MAGT1 MCM10 MYC NBN NHEJ1 NSMCE3 PGM3 PIK3CD PIK3CG PRKCD PTPRC RAC2 RAG1 RAG2 RASGRP1 RFX5 RFXANK RFXAP RIPK1 SASH3 SP110 SYK TOM1 UNC119 WAS WIPF1 ZAP70

Diseases (58) :OMIM:607944 ORPHA:277 OMIM:208900 ORPHA:3261 OMIM:610163 OMIM:615607 OMIM:608957 ORPHA:572 OMIM:242860 OMIM:616433 ORPHA:217390 OMIM:243700 OMIM:242840 ORPHA:508533 OMIM:619164 ORPHA:169095 OMIM:601705 OMIM:618806 OMIM:618204 OMIM:606367 OMIM:312863 OMIM:300400 ORPHA:276 OMIM:618309 OMIM:608971 ORPHA:169154 OMIM:613011 OMIM:618969 OMIM:600802 ORPHA:35078 ORPHA:221139 OMIM:615758 ORPHA:66628 ORPHA:179494 OMIM:300853 OMIM:619313 ORPHA:543 OMIM:251260 ORPHA:169079 OMIM:617241 ORPHA:443811 OMIM:615513 OMIM:619802 OMIM:619924 OMIM:618986 OMIM:233650 ORPHA:231154 OMIM:601457 OMIM:618108 OMIM:301082 ORPHA:79124 OMIM:619381 OMIM:619510 OMIM:615518 OMIM:301000 OMIM:614493 ORPHA:911 OMIM:269840
 

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