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C1QTNF9 C1q and TNF related 9 [ Homo sapiens (human) ]

Gene ID: 338872, updated on 5-Aug-2026
Official Symbol
C1QTNF9provided by HGNC
Official Full Name
C1q and TNF related 9provided by HGNC
Primary source
HGNC:HGNC:28732
See related
Ensembl:ENSG00000240654 MIM:614285; AllianceGenome:HGNC:28732
Gene type
protein coding
RefSeq status
VALIDATED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
AQL1; CTRP9; C1QTNF9A
Summary
Enables identical protein binding activity. Predicted to be involved in signal transduction. Predicted to be located in extracellular region. Predicted to be part of collagen trimer. [provided by Alliance of Genome Resources, Jul 2025]
Expression
Broad expression in testis (RPKM 1.7), heart (RPKM 1.5) and 21 other tissues See more
Orthologs
all
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Try the new Transcripts and proteins table
See C1QTNF9 in Genome Data Viewer
Location:
13q12.12
Exon count:
6
Annotation release Status Assembly Chr Location
RS_2025_08 current GRCh38.p14 (GCF_000001405.40) 13 NC_000013.11 (24307166..24322531)
RS_2025_08 current T2T-CHM13v2.0 (GCF_009914755.1) 13 NC_060937.1 (23514260..23529607)
RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 13 NC_000013.10 (24881304..24896669)

Chromosome 13 - NC_000013.11Genomic Context describing neighboring genes Neighboring gene spermatogenesis associated 13 Neighboring gene microRNA 2276 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7470 Neighboring gene Sharpr-MPRA regulatory region 10151 Neighboring gene H3K27ac-H3K4me1 hESC enhancer GRCh37_chr13:24797397-24798253 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7472 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr13:24799112-24799968 Neighboring gene H3K27ac hESC enhancer GRCh37_chr13:24822035-24822534 Neighboring gene conserved acetylation island sequence 9 enhancer Neighboring gene SPATA13 antisense RNA 1 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7473 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7474 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7475 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7476 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 7477 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 5177 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr13:24855531-24856030 Neighboring gene cell cycle exit and neuronal differentiation protein 1-like Neighboring gene long independently transcribed non-coding RNA 566 Neighboring gene PCOTH pseudogene 1 Neighboring gene cell cycle exit and neuronal differentiation 1 pseudogene 2 Neighboring gene NUS1 pseudogene 3

Go to nucleotide: Graphics FASTA GenBank

  • Project title: Tissue-specific circular RNA induction during human fetal development
  • Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
  • BioProject: PRJNA270632
  • Publication: PMID 26076956
  • Analysis date: Mon Apr 2 22:54:59 2018

Related articles in PubMed

  1. Association of C1q/TNF-Related Protein-9 (CTRP9) Level with Obstructive Sleep Apnea in Patients with Coronary Artery Disease. Li Z, et al. Mediators Inflamm, 2020. PMID 32831639, Free PMC Article
  2. Plasma C1q/TNF-Related Protein-9 Levels Are Associated with Atherosclerosis in Patients with Type 2 Diabetes without Renal Dysfunction. Asada M, et al. J Diabetes Res, 2016. PMID 28070523, Free PMC Article
  3. Association of circulating CTRP9 with soluble adhesion molecules and inflammatory markers in patients with type 2 diabetes mellitus and coronary artery disease. Moradi N, et al. PLoS One, 2018. PMID 29381773, Free PMC Article
  4. Association of serum C1q tumour necrosis factor-related protein 9 with the severity of lower extremity peripheral arterial disease in type 2 diabetes patients. Jiang W, et al. Diab Vasc Dis Res, 2018 May. PMID 29543038
  5. Serum C1q/TNF-related protein 9 is not related to nonalcoholic fatty liver disease. Zhang C, et al. Cytokine, 2018 Oct. PMID 29704818

See all (48) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. Causal association between complement system FHR-5, CTRP9, and breast carcinoma in situ: a Mendelian randomization study.
    Title: Causal association between complement system FHR-5, CTRP9, and breast carcinoma in situ: a Mendelian randomization study.
  2. CTRP9 alleviates hypoxia/reoxygenation-induced human placental vascular endothelial cells impairment and mitochondrial dysfunction through activating AMPK/Nrf2 signaling.
    Title: CTRP9 alleviates hypoxia/reoxygenation-induced human placental vascular endothelial cells impairment and mitochondrial dysfunction through activating AMPK/Nrf2 signaling.
  3. Association Between Circulating Levels of C1q/TNF-Related Protein-9 and Type 2 Diabetes Mellitus: A Systematic Review and Meta-analysis.
    Title: Association Between Circulating Levels of C1q/TNF-Related Protein-9 and Type 2 Diabetes Mellitus: A Systematic Review and Meta-analysis.
  4. C1q/tumor necrosis factor-related protein-9 exerts antioxidant and anti-inflammatory effects on oxygen-glucose deprivation/reoxygenation-stimulated neurons by modulating the Akt-GSK-3beta-Nrf2 cascade via AdipoR1.
    Title: C1q/tumor necrosis factor-related protein-9 exerts antioxidant and anti-inflammatory effects on oxygen-glucose deprivation/reoxygenation-stimulated neurons by modulating the Akt-GSK-3β-Nrf2 cascade via AdipoR1.
  5. Increased Levels of ANGPTL3 and CTRP9 in Patients With Obstructive Sleep Apnea and Their Relation to Insulin Resistance and Lipid Metabolism and Markers of Endothelial Dysfunction.
    Title: Increased Levels of ANGPTL3 and CTRP9 in Patients With Obstructive Sleep Apnea and Their Relation to Insulin Resistance and Lipid Metabolism and Markers of Endothelial Dysfunction.
  6. Serum CTRP9 and high-molecular weight adiponectin are associated with ischemic stroke.
    Title: Serum CTRP9 and high-molecular weight adiponectin are associated with ischemic stroke.
  7. Novel Adipokines CTRP1, CTRP9, and FGF21 in Pediatric Type 1 and Type 2 Diabetes: A Cross-Sectional Analysis.
    Title: Novel Adipokines CTRP1, CTRP9, and FGF21 in Pediatric Type 1 and Type 2 Diabetes: A Cross-Sectional Analysis.
  8. the long-term existence of beta1- AA mAb suppresses cardiac CTRP 9 expression and exaggerates cardiac remodeling, suggesting that CTRP 9 may be a novel therapeutic target against pathologic remodeling in beta1- AA -positive patients with coronary heart disease
    Title: Autoantibodies Against β(1)-Adrenoceptor Exaggerated Ventricular Remodeling by Inhibiting CTRP9 Expression.
  9. Association of C1q/TNF-Related Protein-9 (CTRP9) Level with Obstructive Sleep Apnea in Patients with Coronary Artery Disease.
    Title: Association of C1q/TNF-Related Protein-9 (CTRP9) Level with Obstructive Sleep Apnea in Patients with Coronary Artery Disease.
  10. Association of serum CTRP9 levels with cardiac autonomic neuropathy in patients with type 2 diabetes mellitus.
    Title: Association of serum CTRP9 levels with cardiac autonomic neuropathy in patients with type 2 diabetes mellitus.
Submit: New GeneRIF Correction See all GeneRIFs (38)

Review eQTL and phenotype association data in this region using PheGenI

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

Products Interactant Other Gene Complex Source Pubs Description

Markers

Homology

Clone Names

  • MGC48915

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables hormone activity IBA
Inferred from Biological aspect of Ancestor
more info
  
enables identical protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
Process Evidence Code Pubs
involved_in fatty acid oxidation IBA
Inferred from Biological aspect of Ancestor
more info
  
involved_in signal transduction IEA
Inferred from Electronic Annotation
more info
  
Component Evidence Code Pubs
is_active_in extracellular region IBA
Inferred from Biological aspect of Ancestor
more info
  
located_in extracellular region IEA
Inferred from Electronic Annotation
more info
  
Preferred Names
complement C1q and tumor necrosis factor-related protein 9A
Names
C1q and tumor necrosis factor related protein 9
complement C1q and tumor necrosis factor-related protein 9
complement C1q tumor necrosis factor-related protein 9
complement C1q tumor necrosis factor-related protein 9A

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

  1. NM_001303137.2 → NP_001290066.1  complement C1q and tumor necrosis factor-related protein 9A precursor

    See identical proteins and their annotated locations for NP_001290066.1

    Status: VALIDATED

    Description
    Transcript Variant: This variant (1) represents the longest transcript. Variants 1, 2, and 3 all encode the same protein.
    Source sequence(s)
    AL359736, BC040438, BI767787, BQ882976
    Consensus CDS
    CCDS9306.1
    UniProtKB/Swiss-Prot
    P0C862
    Related
    ENSP00000545320.1, ENST00000875261.1
    Conserved Domains (2) summary
    PHA03169
    Location:41 → 176
    PHA03169; hypothetical protein; Provisional
    pfam00386
    Location:203 → 329
    C1q; C1q domain

  2. NM_001303138.2 → NP_001290067.1  complement C1q and tumor necrosis factor-related protein 9A precursor

    See identical proteins and their annotated locations for NP_001290067.1

    Status: VALIDATED

    Description
    Transcript Variant: This variant (3) uses an alternate first exon in the 5' UTR compared to variant 1. Variants 1, 2, and 3 all encode the same protein.
    Source sequence(s)
    AL359736, BC040438, BI767787
    Consensus CDS
    CCDS9306.1
    UniProtKB/Swiss-Prot
    P0C862
    Related
    ENSP00000371503.2, ENST00000382071.6
    Conserved Domains (2) summary
    PHA03169
    Location:41 → 176
    PHA03169; hypothetical protein; Provisional
    pfam00386
    Location:203 → 329
    C1q; C1q domain

  3. NM_178540.5 → NP_848635.2  complement C1q and tumor necrosis factor-related protein 9A precursor

    See identical proteins and their annotated locations for NP_848635.2

    Status: VALIDATED

    Description
    Transcript Variant: This variant (2) lacks an alternate exon in the 5' UTR compared to variant 1. Variants 1, 2, and 3 all encode the same protein.
    Source sequence(s)
    AL359736, BC040438, BI767787
    Consensus CDS
    CCDS9306.1
    UniProtKB/Swiss-Prot
    P0C862
    Related
    ENSP00000333737.4, ENST00000332018.5
    Conserved Domains (2) summary
    PHA03169
    Location:41 → 176
    PHA03169; hypothetical protein; Provisional
    pfam00386
    Location:203 → 329
    C1q; C1q domain

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2025_08

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000013.11 Reference GRCh38.p14 Primary Assembly

    Range
    24307166..24322531
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060937.1 Alternate T2T-CHM13v2.0

    Range
    23514260..23529607
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)
Nucleotide Protein
Heading Accession and Version
Protein Accession Links
GenPept Link UniProtKB Link
P0C862.1 GenPept UniProtKB/Swiss-Prot:P0C862

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