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Tbio
TIGIT
T-cell immunoreceptor with Ig and ITIM domains

Protein Summary
Description
Binds with high affinity to the poliovirus receptor (PVR) which causes increased secretion of IL10 and decreased secretion of IL12B and suppresses T-cell activation by promoting the generation of mature immunoregulatory dendritic cells. This gene encodes a member of the PVR (poliovirus receptor) family of immunoglobin proteins. The product of this gene is expressed on several classes of T cells including follicular B helper T cells (TFH). The protein has been shown to bind PVR with high affinity; this binding is thought to assist interactions between TFH and dendritic cells to regulate T cell dependent B cell responses.[provided by RefSeq, Sep 2009]
Uniprot Accession IDs
Gene Name
Ensembl ID
  • ENST00000383671
  • ENSP00000373167
  • ENSG00000181847
  • ENST00000486257
  • ENSP00000419085

Symbol
  • VSIG9
  • VSTM3
  • VSIG9
  • VSTM3
  • WUCAM
Illumination Graph
0.8 0.6 0.4 0.2
Knowledge Table
Most Knowledge About
Knowledge Value (0 to 1 scale)
tissue sample
0.74
protein domain
0.58
microRNA
0.56
tissue
0.49
cell line
0.48


Protein Classes
No PANTHER Classes or DTO Classes found
IDG Development Level Summary
Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 318.25   (req: < 5)
Gene RIFs: 118   (req: <= 3)
Antibodies: 275   (req: <= 50)
Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 318.25   (req: >= 5)
Gene RIFs: 118   (req: > 3)
Antibodies: 275   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 5
Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0
Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0
Expression Data (532 Tissues)
none
JensenLab TISSUES
JensenLab TISSUESGTEx - FemaleGTEx - MaleHPA RNAExpression Typelymphoid tissueimmune systemmulticellular organismbody properhematopoietic systemlymph nodeendocrine glandglandspleenviscusT celllymphocyteleukocytehematopoietic cellblooddendritic cellB celldigestive systemmacrophagedigestive tractintestinemononuclear cellgenitourinary systemphagocytelungrespiratory systemlarge intestinemonocytegranulocyterenal systemneutrophilintegumentconnective tissuebone marrowepitheliumtrunkskeletal systemstromal cellplasma cellchestliverbone marrow cellreproductive systemfibroblastcardiovascular systemfemale reproductive systemblood vesselendotheliummucosaendothelial cellhearturotheliumthymuscolonbreastblood plasmaheadepithelial cellkidneyhematopoietic stem cellnervous systemembryonic structurecentral nervous systemembryointernal female genitaliabrainerythrocytetonsilabdomeninternal male genitaliamale reproductive systemstomachmesodermthymocytegerm layercaecumpancreasskin of bodyuterusperitoneumnon-terminally differentiated cellprostate glandvasculaturemouthskeletal jointmusculature of bodypleural fluidcardiac muscle cellsmall intestinemusculaturevertebral columnthroatdeciduaneckplateletskin epidermisintestinal epitheliumspinal cordepidermal cellesophagogastric junctionovarylamina proprialymphoid folliclepericyteendometriumlymphatic vesselthyroid glanduterine cervixadipose tissuehepatocytereticuloendothelial systemglial celllate embryomesenteric lymph nodetestischordate pharynxlymphintestinal mucosamesenchymal stem cellmesenterygonadesophaguslumen of digestive tractforelimbbone elementrectumplacentamelanocyteoropharynxstratum spinosum of epidermisexocrine glandpleurafat padsmooth muscle tissueendothelial cell of vascular treeendocrine pancreasislet of Langerhanstrophoblastnervemanusmanual digitcolonic epitheliumhepatic stellate cellhypopharynxkeratinocytewhite adipose tissuebrown adipose tissueadipocytecapillaryvermiform appendixveinlarynxlymphatic vessel endotheliumlymphoid lineage restricted progenitor cellcolonic mucosahindlimbperitoneal cavityurinary bladdersaliva-secreting glandendothelial cell of lymphatic vesselepithelial cell of large intestinemacroglial cellsubarachnoid spacecerebrospinal fluidLangerhans celltype B pancreatic cellarteryneuronportal veinurineperiosteummouth mucosabile ductalveolus of lungalveolar sacileumdermisgallbladderosteoclastmedulla of thymusintestinal villustonguesalivaadrenal glandastrocytenasopharynxlayer of synovial tissueepithelium of stomachbronchusvaginamucous glandmucosa of stomachentire myelin sheathcerebral hemisphere white mattermammary glandmyelingoblet celldecidua basalissynovial membrane of synovial jointtendon sheathmyeloid lineage restricted progenitor cellcortex of thymusnephronfemurforebrainalveolar wallbrainstemumbilical cordpneumocyteduodenumextravillous trophoblastnephron tubulemesotheliumtendoncerebellumcoelemic cavity lumenmetencephalonhindbrainvenous bloodmegakaryocytehepatic arterysmooth muscle cellperitoneal fluidepithelium of small intestineosteoblastoligodendrocytecardiac muscle tissuepituitary glandamnionmeninxperipheral nervous systemperipheral blood stem cellepithelium of esophagusbrain ventricletelencephalonbasal cellcerebral hemisphereciliary bodycerebral cortexanal canalrespiratory system mucosacartilage tissuesputumsubmucosaepithelium of bronchuspleural cavityoptic choroidcalcareous toothoral epitheliumascending coloncorneatibiasigmoid colonhair folliclechoroid plexusgingivamucosa of vaginamyeloblastegg cellmyocardiumbody wallneuroendocrine celltracheasemenventral pancreatic ductyolk sacpulmonary alveolus epitheliumexocrine pancreaspelvic region of trunkpericardiumnasal cavity mucosalobe of cerebral hemispheretype B synovial cellnosebuccal mucosaepithelium of nasopharynxcytotrophoblastdecidua parietalismuscle celldiencephalonaortapronephrosesophagus mucosainguinal part of abdomenmyometriumsecretory cellskullretinasyncytiotrophoblastmedial geniculate bodyfrontal cortexneural crestartery wallvenulecollecting duct of renal tubuleerythroblasturethrablood serumsecondary palatenasal cavitywall of urinary bladderblastocystlimbic systemepithelium of mammary glandjejunumkneecardia of stomachprostate epitheliumgingival epitheliumchondroblasthypodermisautonomic nervous systemtarsal bonehindlimb stylopodmyoepitheliumendocervixbronchiolesubcutaneous adipose tissuetelencephalic ventriclepeniscranial nerverenal corpuscleexternal male genitaliastrand of hairamniotic fluidectocervixtalussynovial fluidolfactory epitheliumtype II pneumocytewall of blood vesselanusearendothelium of capillarybronchial mucosacardiac ventriclesuperficial fasciaamygdalaangular gyrusanterior cingulate cortexanterior cingulate gyrusanteroventral cochlear nucleusventral funiculus of spinal cordinsular cortexventral anterior nucleus of thalamusarcuate nucleusextrastriate cortexarea postremaprimary visual cortexcaudate nucleuscentral medial nucleuscerebellar cortexcerebellar nuclear complexwhite matter of cerebellumcervical spinal cordclaustrum of braincorpus callosumcorticomedial nuclear complexcuneate nucleuscuneiform nucleusdentate gyrus of hippocampal formationdorsal cochlear nucleusdorsal funiculus of spinal cordmedullary reticular formationdorsal motor nucleus of vagus nervedorsal raphe nucleusdorsal tegmental nucleusdorsolateral prefrontal cortexmidbrain tegmentumdorsomedial nucleus of hypothalamusprefrontal cortexentorhinal cortexepididymisfallopian tubeflocculonodular lobefrontal operculumfrontomarginal sulcusfrontopolar cortexfusiform gyrusglobus pallidusgyrus rectushabenulahippocampal formationCA1 field of hippocampusCA2 field of hippocampusCA3 field of hippocampusinferior colliculusinferior frontal gyrusinferior olivary complexinferior parietal cortexinferior temporal gyrusintraparietal sulcuspontine nuclear grouplateral amygdaloid nucleuslateral funiculus of spinal cordlateral geniculate bodylateral hypothalamic areanucleus of lateral lemniscuslateral reticular nucleuslateral parabrachial nucleuslateral nuclear group of thalamuslateral vestibular nucleuslingual gyruslocus ceruleusmammillary bodymedial dorsal nucleus of thalamusmedial superior olivary nucleusmedial parabrachial nucleusperiolivary nucleusmedial vestibular nucleusmedian raphe nucleuscingulate cortexmiddle frontal gyrusmiddle temporal gyrusfacial motor nucleushypoglossal nucleusmotor nucleus of trigeminal nervenucleus of trapezoid bodynucleus accumbensnucleus ambiguusbasal nucleus of telencephalongracile nucleusnucleus of diagonal bandnucleus raphe magnusnucleus raphe obscurusnucleus raphe pallidusreuniens nucleusrhomboidal nucleusnucleus of solitary tractoccipital cortexolfactory entorhinal cortexolfactory tubercleorbitofrontal cortexparacentral lobuleparahippocampal gyrusparamedian reticular nucleusparathyroid glandparaventricular nucleus of hypothalamusparietal cortexparietal operculumparieto-insular cortexparieto-occipital sulcustemporoparietal junctionparvocellular reticular nucleuspedunculopontine tegmental nucleuscentral gray substance of midbrainperirhinal cortexperitrigeminal nucleuspiriform cortexpontine raphe nucleuspostcentral gyrusposterior cingulate cortexposterior nucleus of thalamusposteroventral cochlear nucleusprecentral gyrusprecuneus cortexpremotor cortexpreoptic areanucleus preposituspretectal regionprincipal sensory nucleus of trigeminal nervepulvinar nucleusputamenred nucleuscaudal pontine reticular nucleusoral pontine reticular nucleusreticulotegmental nucleusretrosplenial regionseminal vesicleseptal nuclear complexskeletal muscle tissuesomatosensory cortexcaudal part of spinal trigeminal nucleusinterpolar part of spinal trigeminal nucleusoral part of spinal trigeminal nucleusvestibular nucleusstria terminalissubcallosal areasubcentral gyrus, S2subiculumsubstantia nigrasubthalamic nucleussuperior colliculussuperior frontal gyrussuperior olivary complexsuperior parietal cortexsuperior temporal gyrussuperior vestibular nucleussupplemental motor cortexsupramarginal gyrussupraoptic nucleustemporal cortextemporal polewhite matter of temporal lobetemporo-occipital transitional zoneanterior transverse temporal gyrusposterior transverse temporal gyrusventral posterolateral nucleusventral posteromedial nucleus of thalamusventral tegmental areaventral nuclear groupventrolateral medulla, A1-C1 cell groupsventromedial nucleus of hypothalamuscerebellar vermiszona incertasuprapubic skintransverse colontibial nerveC1 segment of cervical spinal cordAmmon's hornouter medulla of kidneycortex of kidneyright lobe of liverleft ventricle myocardiumgastroesophageal sphincterbody of pancreashypothalamusesophagus muscularis mucosaanterior lingual glandright atrium auricular regionbreast epitheliumtibial arterygastrocnemius medialisPeyer's patchlower leg skinupper lobe of left lungcoronary arteryesophagus squamous epitheliumascending aortaomental fat padCells - EBV-transformed lymphocytes
root: immaterial entity (BFO:0000141)
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root: material entity (BFO:0000040)
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Coexpression Data
Tissue Specific Coexpression (640)
Illuminating Dark Proteins using Reactome Pathways.
Brunson et al., bioRxiv : the preprint server for biology, 2023-06-05
Items per page:
5
1 – 5 of 640
Coexpressed Target
Data Source
Tissue
GTEx
Colon-Transverse
GTEx
Lung
GTEx
Lung
GTEx
MinorSalivaryGland
GTEx
MinorSalivaryGland
Cancer Specific Coexpression (144)
Items per page:
5
1 – 5 of 144
Coexpressed Target
Data Source
Cancer Type
TCGA
STAD
TCGA
KICH
TCGA
KICH
TCGA
KICH
TCGA
KICH
Protein Sequence and Structure
Residue Counts
LSEAGPVKRTQDIFNYHCMW02468101214161820222426
Protein Sequence
ProtVista Viewer
Related Tools (5)
Target Illumination GWAS Analytics (TIGA)
Thumbnail image for Target Illumination GWAS Analytics (TIGA)
TIGA scores and ranks GWAS discovered associations according to the quantity and quality of the evidence supporting the association.
GENEVA
Thumbnail image for GENEVA
GENEVA (GENe Expression Variance Analysis) allows you to identify RNA-sequencing datasets from the Gene Expression Omnibus (GEO) that contain conditions modulating a gene or a gene signature.
GlyGen
Thumbnail image for GlyGen
GlyGen is a data integration and dissemination project for carbohydrate and glycoconjugate related data.
ARCHS4
Thumbnail image for ARCHS4
ARCHS4 provides access to gene-function predictions based on RNA-seq co-expression, and gene expression levels across cell and tissues.
Protein-Protein Interactions (66)
1 – 10 of 66
D2HGDH
Tbio
IDG Family:  Enzyme
Novelty:  0.04618268
p_int:  0.999998988
p_ni:  0.000001012
Data Source:  BioPlex
ZDHHC6
Tbio
IDG Family:  Enzyme
Novelty:  0.17384821
p_int:  0.999988842
p_ni:  0.000011158
Data Source:  BioPlex
ZRANB3
Tbio
IDG Family:  Enzyme
Novelty:  0.00398767
p_int:  0.998523984
p_ni:  0.001210499
p_wrong:  0.000265517
Data Source:  BioPlex
UFSP2
Tbio
IDG Family:  Enzyme
Novelty:  0.12630722
p_int:  0.99634528
p_ni:  0.00365472
Data Source:  BioPlex
ITCH
Tbio
IDG Family:  Enzyme
Novelty:  0.00681861
p_int:  0.96455227
p_ni:  0.03544773
Data Source:  BioPlex
CDC6
Tbio
Novelty:  0.00219371
p_int:  0.957965549
p_ni:  0.042026228
p_wrong:  0.000008223
Data Source:  BioPlex
ATP8B2
Tbio
IDG Family:  Transporter
Novelty:  0.09269537
p_int:  0.940682069
p_ni:  0.059317893
p_wrong:  3.8e-8
Data Source:  BioPlex
RHOBTB3
Tbio
Novelty:  0.09149494
p_int:  0.937663396
p_ni:  0.062142479
p_wrong:  0.000194125
Data Source:  BioPlex
FAM171A2
Tdark
Novelty:  1.18763693
p_int:  0.823426445
p_ni:  0.176573538
p_wrong:  1.7e-8
Data Source:  BioPlex
PODXL2
Tbio
Novelty:  0.09100487
p_int:  0.81727413
p_ni:  0.002798605
p_wrong:  0.179927265
Data Source:  BioPlex
Predicted Interactions
Tissue Specific Coexpression (640)
Illuminating Dark Proteins using Reactome Pathways.
Brunson et al., bioRxiv : the preprint server for biology, 2023-06-05
Items per page:
5
1 – 5 of 640
Coexpressed Target
Data Source
Tissue
GTEx
Colon-Transverse
GTEx
Lung
GTEx
Lung
GTEx
MinorSalivaryGland
GTEx
MinorSalivaryGland
Cancer Specific Coexpression (144)
Items per page:
5
1 – 5 of 144
Coexpressed Target
Data Source
Cancer Type
TCGA
STAD
TCGA
KICH
TCGA
KICH
TCGA
KICH
TCGA
KICH
Nearest Tclin Targets
Nearest Tclin calculations are only available for non-Tclin targets that have KEGG Pathway annotations.
Interacting Pathways
Reactome is a manually curated, peer reviewed knowledgebase of human biological pathways and processes, available online as an open access resource that can be freely used and distributed by all members of the biological research community. This view of the Reactome database displays the pathways functionally interacting with TIGIT.
Viral Interactions (1 Predicted)
1 – 1 of 1
Gene Ontology Terms (8)
Items per page:
5
1 – 2 of 2
GO Term
Evidence
Assigned by
Inferred from Physical Interaction (IPI)
IntAct
Inferred from Physical Interaction (IPI)
MGI
Disease Associations (6)
1 – 6 of 6
Predicted Diseases
Tissue Specific Coexpression (640)
Illuminating Dark Proteins using Reactome Pathways.
Brunson et al., bioRxiv : the preprint server for biology, 2023-06-05
Items per page:
5
1 – 5 of 640
Coexpressed Target
Data Source
Tissue
GTEx
Colon-Transverse
GTEx
Lung
GTEx
Lung
GTEx
MinorSalivaryGland
GTEx
MinorSalivaryGland
Cancer Specific Coexpression (144)
Items per page:
5
1 – 5 of 144
Coexpressed Target
Data Source
Cancer Type
TCGA
STAD
TCGA
KICH
TCGA
KICH
TCGA
KICH
TCGA
KICH
Disease Novelty (TIN-X)
none
1.00000µ100.000µ10.0000m1.00000Novelty10.0000µ100.000µ1.00000m10.0000m100.000m1.0000010.0000100.000Importance
root: disease (DOID:4)
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GWAS Traits (6)
GWAS Trait
EFO ID
Study Count
SNP Count
Beta Count
Odds Ratio
Evidence (Mean Rank Score)
Provenance
balding measurement
1
2
2
81
smoking status measurement
2
1
2
64.9
1
1
1
37.6
risk-taking behaviour
1
1
1
30.2
feeling emotionally hurt measurement
1
1
0
5.5
23.7
none
2025303540455055606570758085Mean Rank Score-10123Beta Count
Find similar targets by:
IDG Resources
No IDG generated resources found
Orthologs (8)
1 – 5 of 8
Species
Name
Source ID
Gene ID
OMA
EggNOG
Inparanoid
Chimp
T cell immunoreceptor with Ig and ITIM domains
VGNC:2604
470887
Mouse
MGI:3642260
100043314
Rat
RGD:1563191
363784
Dog
T cell immunoreceptor with Ig and ITIM domains
VGNC:47374
487986
Horse
T cell immunoreceptor with Ig and ITIM domains
VGNC:24107
100071301
Species
Name
OMA
EggNOG
Inparanoid
Chimp
T cell immunoreceptor with Ig and ITIM domains
Mouse
Rat
Dog
T cell immunoreceptor with Ig and ITIM domains
Horse
T cell immunoreceptor with Ig and ITIM domains
Publication Statistics
PubMed Score 318.25
PubMed score by year
none
201020152020Year020406080Score
PubTator Score 40.68
PubTator score by year
none
20102015Year0246810Score
Publications (123)
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Overrepresented Terms from Abstracts 0 terms from up to 100 abstracts, scaled based on the degree of overrepresentation (Fisher's Exact Test p-Value).
Items per page:
1 – 5 of 123
GeneRIF:
The immune checkpoint TIGIT/CD155 promotes the exhaustion of CD8 + T cells in TNBC through glucose metabolic reprogramming mediated by PI3K/AKT/mTOR signaling.
Abstract: (show)
The CD155/TIGIT axis has attracted considerable interest as an emerging immune checkpoint with potential applications in cancer immunotherapy. Our research focused on investigating the role of CD155/TIGIT checkpoints in the progression of triple-negative breast cancer (TNBC).
GeneRIF:
Decreased expression of TIGIT on CD14 + monocytes correlates with clinical features and laboratory parameters of patients with primary Sjogren's syndrome.
Abstract: (show)
The purpose of this study was to investigate the expression of T-cell immunoglobulin and ITIM domain (TIGIT) in peripheral circulation of primary Sjögren's syndrome (pSS) and its role in the development of pSS.
[Expression and effect of TIGIT in peripheral blood CD56+ T cells of patients with rheumatoid arthritis].
Zhu et al., Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology, 2023-11-20
Abstract: (show)
Objective To investigate the proportional change of CD56+ T cells in peripheral blood of patients with rheumatoid arthritis (RA) and the expression of T cell immunoglobulin and immune receptor tyrosine inhibitory motif domain (TIGIT) on the surface of CD56+ T cells, and to explore the effect of TIGIT on CD56+ T cell function in RA. Methods Fifty patients with RA and twenty healthy controls were selected. Flow cytometry was used to determine the proportion of CD56+ T cells in peripheral blood, and the correlation between the resulting cell ratio and clinical indicators of the disease was analyzed. Flow cytometry was used to measure the expression level of TIGIT in peripheral blood CD56+ T cells in RA patients. Density gradient centrifugation was used to isolate peripheral blood mononuclear cells which were subsequently cultured in vitro. The proportion of CD56+ T cells expressing Interferon-γ (IFN-γ) and Interleukin-17A (IL-17A) in peripheral blood of RA patients were measured. The differential expression of IFN-γ and IL-17A in TIGIT- CD56+ T cells and TIGIT+ CD56+ T cells was investigated. The serum IL-17A levels in RA patients were assayed by ELISA. Results Compared with the healthy controls, the proportion of CD56+ T cells in peripheral blood was reduced in RA patients, and the proportion of CD56+ T cells expressing IL-17A was significantly reduced; Serum IL-17A concentration was elevated in RA patients. CD56+ T cells in RA patients were with higher expression of TIGIT molecules, and IFN-γ was mainly derived from TIGIT- CD56+ T cells. There was no significant difference between the proportion of TIGIT- CD56+ T cells and TIGIT+ CD56+ T cells expressing IL-17A. Conclusion Abnormal expression of TIGIT affects cytokine secretion function of CD56+ T cells, which in turn participates in the RA disease progression. And IFN-γ is mainly derived from TIGIT- CD56+ T cells. However, TIGIT may not affect the IL-17A secretion level of CD56+ T cells.
Abstract: (show)
Available therapies for chronic hepatitis B virus (HBV) infection are not satisfying, and interleukin-21 (IL-21) and checkpoint inhibitors are potential therapeutic options. However, the mechanism underlying IL-21 and checkpoint inhibitors in treating chronic HBV infection is unclear. To explore whether IL-21 and checkpoint inhibitors promote HBV clearance by modulating the function of natural killer (NK) cells, we measured the phenotypes and functions of NK cells in chronic HBV-infected patients and healthy controls on mRNA and protein levels. We found that chronic HBV infection disturbed the transcriptome of NK cells, including decreased expression of KLRK1, TIGIT, GZMA, PRF1, and increased expression of CD69. We also observed altered phenotypes and functions of NK cells in chronic HBV-infected patients, characterized by decreased NKG2D expression, increased TIGIT expression and impaired interferon-gamma (IFN-γ), tumor necrosis factor-alpha (TNF-α) production. Furthermore, these alterations cannot be restored by telbivudine treatment but can be partially restored by IL-21 and anti-TIGIT stimulation. IL-21 upregulated the expression of activating receptor CD16, CD69, and NKG2D on NK cells, enhanced IFN-γ production, cytolysis, and proliferation of NK cells, while anti-TIGIT promoted IFN-γ production in CD56dim subset exclusively in chronic HBV infected patients. Additionally, IL-21 was indispensable for anti-TIGIT in HBsAg clearance in mice bearing HBV. It enhanced IFN-γ production in splenic NK cells rather than intrahepatic NK cells, indicating a brand-new mechanism of IL-21 in HBV clearance when combined with anti-TIGIT. Overall, our findings contribute to the design of immunotherapy through enhancing the antiviral efficacy of NK cells in chronic HBV infection.
CD155 and Its Receptors as Targets for Cancer Therapy.
Rossella Paolini, Rosa Molfetta, International journal of molecular sciences, 2023-08-19
Abstract: (show)
CD155, also known as the poliovirus receptor, is an adhesion molecule often overexpressed in tumors of different origins where it promotes cell migration and proliferation. In addition to this pro-tumorigenic function, CD155 plays an immunomodulatory role during tumor progression since it is a ligand for both the activating receptor DNAM-1 and the inhibitory receptor TIGIT, expressed on cytotoxic innate and adaptative lymphocytes. DNAM-1 is a well-recognized receptor involved in anti-tumor immune surveillance. However, in advanced tumor stages, TIGIT is up-regulated and acts as an immune checkpoint receptor, counterbalancing DNAM-1-mediated cancer cell clearance. Pre-clinical studies have proposed the direct targeting of CD155 on tumor cells as well as the enhancement of DNAM-1-mediated anti-tumor functions as promising therapeutic approaches. Moreover, immunotherapeutic use of anti-TIGIT blocking antibody alone or in combined therapy has already been included in clinical trials. The aim of this review is to summarize all these potential therapies, highlighting the still controversial role of CD155 during tumor progression.