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Symbol
Name
ID
Icos
inducible T cell co-stimulator
MGI:1858745
Phenotype annotations related to immune system
*Aspects of the system are reported to show a normal phenotype.
Darker colors indicate more annotations
Human Phenotypes
Decreased circulating IgA level
Decreased circulating IgG level
Decreased circulating total IgM
Secretory IgA deficiency
Impaired T cell function
Neutropenia in presence of anti-neutropil antibodies
Decreased proportion of class-switched memory B cells
B lymphocytopenia
Abnormal T cell count
Abnormal lymphocyte morphology
Recurrent sinusitis
Conjunctivitis
Lymphadenopathy
Splenomegaly
Recurrent infection of the gastrointestinal tract
Recurrent otitis media
Chronic intestinal candidiasis
Pneumonia
Recurrent pneumonia
Autoimmunity
Immunodeficiency
Recurrent infections
Recurrent bacterial infections
Recurrent respiratory infections
Recurrent bronchitis
Recurrent sinopulmonary infections
Disease(s) Associated with ICOS
common variable immunodeficiency 1
immunoglobulin alpha deficiency

Mouse Phenotypes
immune system phenotype
decreased T cell proliferation
insulitis
abnormal B cell selection
abnormal class switch recombination
abnormal T cell differentiation
abnormal leukocyte cell number
abnormal B cell number
decreased germinal center B cell number
decreased plasma cell number
increased plasma cell number
abnormal memory B cell number
decreased CD4-positive, alpha-beta T cell number
decreased T cell number
abnormal spleen morphology
abnormal spleen germinal center morphology
decreased spleen germinal center number
decreased spleen germinal center size
abnormal B cell physiology
abnormal immunoglobulin level
decreased IgA level
decreased IgE level
decreased IgG1 level
decreased IgG2a level
decreased IgG2b level
decreased IgG2c level
increased IgG3 level
decreased IgG level
abnormal NK cell physiology
abnormal T cell physiology
abnormal CD4-positive, alpha-beta T cell physiology
abnormal T-helper 2 physiology
decreased circulating interferon-gamma level
decreased circulating interleukin-4 level
abnormal interferon level
abnormal interleukin level
abnormal Peyer's patch germinal center morphology
small Peyer's patches
small lymph nodes
abnormal immune system physiology
abnormal cytokine secretion
decreased interferon-gamma secretion
abnormal interleukin secretion
decreased interleukin-21 secretion
decreased interleukin-4 secretion
decreased interleukin-5 secretion
decreased susceptibility to autoimmune diabetes
increased susceptibility to experimental autoimmune encephalomyelitis
decreased autoantibody level
decreased anti-insulin autoantibody level
abnormal response to infection
Availability Mouse Genotype
Icostm1.1Wks/Icostm1.1Wks
Icostm1Dgry/Icostm1Dgry
Icostm1Flv/Icostm1Flv *
Icostm1Mak/Icostm1Mak
Icostm1Shr/Icostm1Shr
Icostm1Tkan/Icostm1Tkan
Icostm1Flv/Icos+

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory