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Caspase recruitment domain family, member 9
Symbols CARD9 ; CANDF2; hCARD9
External IDs OMIM607212 MGI2685628 HomoloGene14150 GeneCards: CARD9 Gene
Species Human Mouse
Entrez 64170 332579
Ensembl ENSG00000187796 ENSMUSG00000026928
UniProt Q9H257 A2AIV8
RefSeq (mRNA) NM_052813 NM_001037747
RefSeq (protein) NP_434700 NP_001032836
Location (UCSC) Chr 9:
139.26 – 139.27 Mb
Chr 2:
26.35 – 26.36 Mb
PubMed search [1] [2]

Caspase recruitment domain-containing protein 9 is an adaptor protein that in humans is encoded by the CARD9 gene.[1][2]


CARD9 is a member of the CARD protein family, which is defined by the presence of a characteristic caspase-associated recruitment domain (CARD). CARD is a protein interaction domain known to participate in activation or suppression of CARD containing members of the caspase family, and thus plays an important regulatory role in cell apoptosis. This protein was identified by its selective association with the CARD domain of BCL10, a positive regulator of apoptosis and NF-κB activation, and is thought to function as a molecular scaffold for the assembly of a BCL10 signaling complex that activates NF-κB. Several alternatively spliced transcript variants have been observed, but their full-length nature is not clearly defined.[2]

Clinical significance[edit]

It recently became clear that Card9 plays important roles as part of the innate immune response for the defense against pathogens such as yeasts. Card9 mediates signals from so called pattern recognition receptors (Dectin-1) to downstream signalling pathways such as NF-κB and by this activates pro-inflammatory cytokines (TNF, IL-23, IL-6, IL-2) and an anti-inflammatory cytokine (IL-10) and subsequently an appropriate innate and adaptive immune response for the efficient clearance of the infection.[3] Importantly, it was reported that an autosomal recessive form of susceptibility to chronic mucocutaneous candidiasis is associated with homozygous mutations in CARD9.[4] Mutations in this gene have been associated to inflammatory diseases such as Ankylosing spondylitis and inflammatory bowel disease (Crohn's Disease and Ulcerative Colitis).[5][6]


CARD9 has been shown to interact with BCL10.[7]

Model organisms[edit]

Model organisms have been used in the study of CARD9 function. A conditional knockout mouse line called Card9tm1a(EUCOMM)Hmgu was generated at the Wellcome Trust Sanger Institute.[8] Male and female animals underwent a standardized phenotypic screen[9] to determine the effects of deletion.[10][11][12][13] Additional screens performed: - In-depth immunological phenotyping[14] - in-depth bone and cartilage phenotyping[15]


  1. ^ Bertin J, Guo Y, Wang L, Srinivasula SM, Jacobson MD, Poyet JL et al. (Jan 2001). "CARD9 is a novel caspase recruitment domain-containing protein that interacts with BCL10/CLAP and activates NF-kappa B". J. Biol. Chem. 275 (52): 41082–6. doi:10.1074/jbc.C000726200. PMID 11053425. 
  2. ^ a b "Entrez Gene: CARD9 caspase recruitment domain family, member 9". 
  3. ^ Gross O, Gewies A, Finger K, Schäfer M, Sparwasser T, Peschel C et al. (Aug 2006). "Card9 controls a non-TLR signalling pathway for innate anti-fungal immunity". Nature 442 (7103): 651–6. doi:10.1038/nature04926. PMID 16862125. 
  4. ^ Glocker EO, Hennigs A, Nabavi M, Schäffer AA, Woellner C, Salzer U et al. (Oct 2009). "A homozygous CARD9 mutation in a family with susceptibility to fungal infections". N. Engl. J. Med. 361 (18): 1727–35. doi:10.1056/NEJMoa0810719. PMC 2793117. PMID 19864672. 
  5. ^ Evans DM, Spencer CC, Pointon JJ, Su Z, Harvey D, Kochan G et al. (August 2011). "Interaction between ERAP1 and HLA-B27 in ankylosing spondylitis implicates peptide handling in the mechanism for HLA-B27 in disease susceptibility". Nat. Genet. 43 (8): 761–7. doi:10.1038/ng.873. PMID 21743469. 
  6. ^ Rivas MA, Beaudoin M, Gardet A, Stevens C, Sharma Y, Zhang CK et al. (November 2011). "Deep resequencing of GWAS loci identifies independent rare variants associated with inflammatory bowel disease". Nat. Genet. 43 (11): 1066–73. doi:10.1038/ng.952. PMC 3378381. PMID 21983784. 
  7. ^ Bertin J, Guo Y, Wang L, Srinivasula SM, Jacobson MD, Poyet JL et al. (December 2000). "CARD9 is a novel caspase recruitment domain-containing protein that interacts with BCL10/CLAP and activates NF-kappa B". J. Biol. Chem. 275 (52): 41082–6. doi:10.1074/jbc.C000726200. PMID 11053425. 
  8. ^ Gerdin AK (2010). "The Sanger Mouse Genetics Programme: high throughput characterisation of knockout mice". Acta Opthalmologica 88: 925-7.doi:10.1111/j.1755-3768.2010.4142.x: Wiley. 
  9. ^ a b "International Mouse Phenotyping Consortium". 
  10. ^ Skarnes WC, Rosen B, West AP, Koutsourakis M, Bushell W, Iyer V et al. (Jun 2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature 474 (7351): 337â€"42. doi:10.1038/nature10163. PMC 3572410. PMID 21677750. 
  11. ^ Dolgin E (Jun 2011). "Mouse library set to be knockout". Nature 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718. 
  12. ^ Collins FS, Rossant J, Wurst W (Jan 2007). "A mouse for all reasons". Cell 128 (1): 9â€"13. doi:10.1016/j.cell.2006.12.018. PMID 17218247. 
  13. ^ White JK, Gerdin AK, Karp NA, Ryder E, Buljan M, Bussell JN et al. (2013). "Genome-wide generation and systematic phenotyping of knockout mice reveals new roles for many genes". Cell 154 (2): 452–64. doi:10.1016/j.cell.2013.06.022. PMID 23870131. 
  14. ^ a b "Infection and Immunity Immunophenotyping (3i) Consortium". 
  15. ^ a b "OBCD Consortium". 

Further reading[edit]