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CR2: complement C3d receptor 2

1 protein, 44 patents, 0 drugs, 0 trials, 3,252 NIH grants and 7,382 papers.

Gene 7

Its symbol and name are HGNC's, unless HGNC and NCBI Gene contradict each other.

FieldValueSource
SymbolCR2HGNC
Namecomplement C3d receptor 2HGNC
NCBI Gene ID1380NCBI Gene
HGNC IDHGNC:2336HGNC
EnsemblENSG00000117322NCBI Gene
AliasesC3DR, CD21, CR, CVID7, SLEB9NCBI Gene
Typeprotein-codingNCBI Gene

Proteins 1

Reviewed human proteins whose Swiss-Prot entry states the gene.

UniProt entryProteinLengthStructuresGene stated inSource
P20023Complement receptor type 21,0339Ensembl, GeneID, HGNCUniProt

Patents 44

Patents whose sequence listing holds the protein exactly: the same sequence, by SHA-256, length and CRC-64. A sequence a patent lists is not always one it claims.

PublicationPublishedSEQ ID NOProteinSource
JP 2026004568 A2026-01-1441958P20023Espacenet
EP 4650780 A22025-11-198161P20023Espacenet
EP 4641201 A22025-10-298320P20023Espacenet
EP 4641202 A22025-10-29446P20023Espacenet
EP 4641203 A22025-10-29233P20023Espacenet
JP 2025529142 A2025-09-041110P20023Espacenet
US 12371689 B22025-07-291110P20023Espacenet
JP 2025517967 A2025-06-12233P20023Espacenet
JP 2025517969 A2025-06-128320P20023Espacenet
JP 2025517970 A2025-06-128161P20023Espacenet

Drugs 0

Drugs a ChEMBL mechanism record says act on the gene's protein, through Open Targets.

DrugChEMBL IDMechanismActionSource

Trials 0

Trials of those drugs. A trial joins the gene only through a drug that acts on it.

TrialDrugPhaseResults first postedSource

NIH grants 3252

NIH projects whose papers are about the gene, through NIH's grant-paper links.

ProjectTitleIts papers about the geneNewest fiscal yearSource
P30CA008748Cancer Center Support Grant242,025NIH's project files
P30CA016672Cancer Center Support Grant212,025NIH's project files
ZIAAI000825Role of B Lymphocytes In HIV Infection And Pathogenesis202,025NIH's project files
U19AI110483Regulation of B cell Responses in SLE and Other Autoimmune Diseases192,025NIH's project files
ZIASC000550Lymphoma Disease Discovery and Definition182,025NIH's project files
ZIAAI001155Mechanisms of naturally-acquired immunity to malaria and clinical trials of anti-malaria monoclonal antibodies172,025NIH's project files
P30AI073961Miami Center for AIDS Research162,025NIH's project files
P51OD011132Emory National Primate Research Center142,025NIH's project files
ZIAAI000913Epstein-Barr Virus Associated Disorders142,025NIH's project files
ZIABC011070Hematopathology Diagnosis142,025NIH's project files

Papers 7382

Newest first. Swiss-Prot's references are curated; PubTator's text mining finds papers that name the gene, not always ones about it.

PMIDFound bySource
42818786PubTator, text miningPubMed
42814322PubTator, text miningPubMed
42800817PubTator, text miningPubMed
42799816PubTator, text miningPubMed
42756008PubTator, text miningPubMed
42755460PubTator, text miningPubMed
42736562PubTator, text miningPubMed
42718563PubTator, text miningPubMed
42715143PubTator, text miningPubMed
42683405PubTator, text miningPubMed

The same record as JSON

Release gene-search-2026-11-11-0.1.0

ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299 ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

ChEMBL, through Open Targets: CC BY-SA 3.0, for the parts from ChEMBL. Read on 8 Nov 2026 at https://platform-docs.opentargets.org/licence

ClinicalTrials.gov: none stated ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

EMBL-EBI's patent proteins: EMBL-EBI's patent protein files from the EPO, JPO, KIPO and USPTO. EMBL-EBI: "EMBL-EBI itself places no additional restrictions on the use or redistribution of the data available via its Data Resources and Tools other than those provided by the original data owners" and "EMBL-EBI expects attribution (e.g. in publications, services or products) for the use of any of its Data Resources and Tools." Read on 11 Nov 2026 at https://www.ebi.ac.uk/about/terms-of-use

GenBank's patent files: GenBank's patent files. NCBI: "NCBI places no restrictions on the use or distribution of the GenBank data. However, some submitters may claim patent, copyright, or other intellectual property rights in all or a portion of the data they have submitted." Read on 11 Nov 2026 at https://www.ncbi.nlm.nih.gov/genbank/about/

HGNC: CC0: https://www.genenames.org/about/license/

NCBI Gene: None named for the file. NCBI says information created by or for the US government on its site is in the public domain, and asks that NLM be acknowledged: https://www.ncbi.nlm.nih.gov/home/about/policies/

NIH's project files and grant-paper links: Public domain (NIH RePORTER)

Open Targets: CC0 1.0. Open Targets asks that users cite its latest paper: Buniello et al. 2025, Open Targets Platform: facilitating therapeutic hypotheses building in drug discovery, Nucleic Acids Research 53(D1):D1467, PMID 39657122. Read on 8 Nov 2026 at https://platform-docs.opentargets.org/licence

PubTator 3: Public domain

UniProt: CC BY 4.0. UniProt's licence file: "All databases and documents in the UniProt FTP directory may be copied and redistributed freely, without advance permission, provided that this copyright statement is reproduced with each copy." UniProt asks that users cite its latest paper: The UniProt Consortium, UniProt: the Universal Protein Knowledgebase in 2025, Nucleic Acids Research 53:D609-D617, https://doi.org/10.1093/nar/gkae1010. Read on 9 Nov 2026 at https://www.uniprot.org/help/license