B7-H3 (CD276) | Other immune checkpoint proteins | IUPHAR Guide to IMMUNOPHARMACOLOGY

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B7-H3 (CD276)

Target id: 2938

Nomenclature: B7-H3 (CD276)

Family: Other immune checkpoint proteins, CD molecules

Annotation status:  image of a grey circle Awaiting annotation/under development. Please contact us if you can help with annotation.  » Email us

   GtoImmuPdb view: ON :     B7-H3 (CD276) has curated data in GtoImmuPdb

Gene and Protein Information
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Human 1 534 15q24.1 CD276 CD276 molecule 10
Mouse 1 316 9 B Cd276 CD276 antigen 10
Rat 1 316 8q24 Cd276 Cd276 molecule
Gene and Protein Information Comments
Multiple transcript variants and protein isoforms are produced from the human gene. Human B7-H3b (an isoform with four Ig-like domains that results from gene duplication and differential splicing) is the major isoform expressed in several tissues [10].
Database Links
Ensembl Gene
Entrez Gene
Human Protein Atlas
RefSeq Nucleotide
RefSeq Protein

Download all structure-activity data for this target as a CSV file

Key to terms and symbols Click column headers to sort
Antibody Sp. Action Affinity Units Reference
enoblituzumab Monkey Binding 7.7 pKd 7
pKd 7.7 (Kd 2.25x10-8 M) [7]
Description: By surface plasmon resonance (SPR) assay.
enoblituzumab Hs Binding 7.6 pKd 7
pKd 7.6 (Kd 2.45x10-8 M) [7]
Description: By surface plasmon resonance (SPR) assay
Antibody Comments
A radio-iodinated monoclonal called [131I]-burtomab (humanized from a mouse monoclonal designated 8H9) [1,8] that targets B7-H3 expressing cancer cells is being developed by Y-mAbs Therapeutics. It has been granted FDA breakthrough therapy designation for pediatric relapsed/refractory metastatic neuroblastoma with central nervous system or leptomeningeal metastasis. A Phase 2/3 clinical trial (NCT03275402) in neuroblastoma is in the planning stage (as of November 2017).
General Comments
B7-H3 is a molecular target for oncology drug development [7,9].


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1. Ahmed M, Cheng M, Zhao Q, Goldgur Y, Cheal SM, Guo HF, Larson SM, Cheung NK. (2015) Humanized Affinity-matured Monoclonal Antibody 8H9 Has Potent Antitumor Activity and Binds to FG Loop of Tumor Antigen B7-H3. J. Biol. Chem., 290 (50): 30018-29. [PMID:26487718]

2. Bottino C, Dondero A, Bellora F, Moretta L, Locatelli F, Pistoia V, Moretta A, Castriconi R. (2014) Natural killer cells and neuroblastoma: tumor recognition, escape mechanisms, and possible novel immunotherapeutic approaches. Front Immunol, 5: 56. [PMID:24575100]

3. CalabrĂ² L, Sigalotti L, Fonsatti E, Bertocci E, Di Giacomo AM, Danielli R, Cutaia O, Colizzi F, Covre A, Mutti L et al.. (2011) Expression and regulation of B7-H3 immunoregulatory receptor, in human mesothelial and mesothelioma cells: immunotherapeutic implications. J. Cell. Physiol., 226 (10): 2595-600. [PMID:21792917]

4. Castriconi R, Dondero A, Augugliaro R, Cantoni C, Carnemolla B, Sementa AR, Negri F, Conte R, Corrias MV, Moretta L et al.. (2004) Identification of 4Ig-B7-H3 as a neuroblastoma-associated molecule that exerts a protective role from an NK cell-mediated lysis. Proc. Natl. Acad. Sci. U.S.A., 101 (34): 12640-5. [PMID:15314238]

5. Chapoval AI, Ni J, Lau JS, Wilcox RA, Flies DB, Liu D, Dong H, Sica GL, Zhu G, Tamada K et al.. (2001) B7-H3: a costimulatory molecule for T cell activation and IFN-gamma production. Nat. Immunol., 2 (3): 269-74. [PMID:11224528]

6. Dong C, Nurieva RI, Prasad DV. (2003) Immune regulation by novel costimulatory molecules. Immunol. Res., 28 (1): 39-48. [PMID:12947223]

7. Loo D, Alderson RF, Chen FZ, Huang L, Zhang W, Gorlatov S, Burke S, Ciccarone V, Li H, Yang Y et al.. (2012) Development of an Fc-enhanced anti-B7-H3 monoclonal antibody with potent antitumor activity. Clin. Cancer Res., 18 (14): 3834-45. [PMID:22615450]

8. Modak S, Kramer K, Gultekin SH, Guo HF, Cheung NK. (2001) Monoclonal antibody 8H9 targets a novel cell surface antigen expressed by a wide spectrum of human solid tumors. Cancer Res., 61 (10): 4048-54. [PMID:11358824]

9. Nygren MK, Tekle C, Ingebrigtsen VA, Fodstad O. (2011) B7-H3 and its relevance in cancer; immunological and non-immunological perspectives. Front Biosci (Elite Ed), 3: 989-93. [PMID:21622107]

10. Sun M, Richards S, Prasad DV, Mai XM, Rudensky A, Dong C. (2002) Characterization of mouse and human B7-H3 genes. J. Immunol., 168 (12): 6294-7. [PMID:12055244]

11. Zhou Z, Luther N, Ibrahim GM, Hawkins C, Vibhakar R, Handler MH, Souweidane MM. (2013) B7-H3, a potential therapeutic target, is expressed in diffuse intrinsic pontine glioma. J. Neurooncol., 111 (3): 257-64. [PMID:23232807]

How to cite this page

Other immune checkpoint proteins: B7-H3 (CD276). Last modified on 22/11/2017. Accessed on 16/01/2019. IUPHAR/BPS Guide to PHARMACOLOGY, http://guidetoimmunopharmacology.org/GRAC/ObjectDisplayForward?objectId=2938.