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GENE:

CA9 (Carbonic anhydrase 9)

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Other names: CA9, Carbonic Anhydrase 9, Carbonic Anhydrase IX, Renal Cell Carcinoma-Associated, Antigen G250, RCC-Associated Protein G250, RCC-Associated Antigen G250, Carbonate Dehydratase IX, Carbonic Dehydratase, Membrane Antigen MN, P54/58N, CA-IX, CAIX, G250
1d
Carbonic anhydrase 9 as a circulating biomarker and therapeutic target in patients with hepatocellular carcinoma treated with atezolizumab plus bevacizumab. (PubMed, J Immunother Cancer)
Tumor-derived circulating CA9 is a predictive biomarker and functional driver of resistance to Atez/Bev therapy in HCC. Targeting CA9 may enhance therapeutic response.
Journal • PD(L)-1 Biomarker
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CD8 (cluster of differentiation 8) • CA9 (Carbonic anhydrase 9)
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Avastin (bevacizumab) • Tecentriq (atezolizumab)
1d
NPTX2 accelerates cell cycle progression, activates EMT, and regulates glycolytic metabolic pathways to promote clear cell renal cell carcinoma progression. (PubMed, Biochem Pharmacol)
In vivo, NPTX2 overexpression promoted tumor growth, increased Ki67 positivity, and enhanced H3K18la modification co-localizing with CAIX at the invasive front. This study demonstrates that NPTX2 drives ccRCC progression through coordinated regulation of cell cycle, EMT, and glycolysis-driven histone lactylation, positioning it as a potential prognostic biomarker and therapeutic target.
Journal
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CCND1 (Cyclin D1) • MMP2 (Matrix metallopeptidase 2) • CA9 (Carbonic anhydrase 9) • VIM (Vimentin) • CDK2 (Cyclin-dependent kinase 2) • CDH2 (Cadherin 2)
3d
Incidental Detection of a CAIX-avid Breast Invasive Ductal Carcinoma on 68Ga-NY104 PET/CT During Evaluation of a Suspected Renal Mass. (PubMed, Clin Nucl Med)
Postoperative pathology confirmed the renal mass as benign angiomyolipoma and the breast nodule as invasive ductal carcinoma. This case highlights the inclusion of primary breast cancer in the differential diagnosis of extra-renal CAIX-avid lesions.
Journal
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CA9 (Carbonic anhydrase 9)
5d
Dual-Receptor Targeted Imaging of Cancer Cells with a Bioorthogonal Iridium(III)-Based Probe. (PubMed, Inorg Chem)
On the other hand, complex 2 showed negligible luminescence in cell lines with low expression of CAIX, demonstrating its ability to discriminate cancer cells. Overall, this work demonstrates the promising potential of dual receptor-mediated iridium(III) complexes based on the bioorthogonal activation strategy for the accurate and specific imaging of cancer cells.
Journal
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CA9 (Carbonic anhydrase 9)
9d
Double faces of pheochromocytoma and paraganglioma-a review of integrated pathologic diagnosis. (PubMed, Endocr J)
The other familial type of MEN type2 and NF1 are discussed by some characteristic features in histology. Finally, rare types such as ACTH-producing PPGL, and dopamine-producing PPGL are discussed.
Journal
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NF1 (Neurofibromin 1) • SDHB (Succinate Dehydrogenase Complex Iron Sulfur Subunit B) • CA9 (Carbonic anhydrase 9) • GATA3 (GATA binding protein 3) • PHOX2B (Paired Like Homeobox 2B)
9d
LUTEON: Phase 3 Study to Assess Safety and Efficacy of 177Lu-TLX250 in Advanced Relapsed or Recurrent ccRCC (clinicaltrials.gov)
P3, N=40, Recruiting, Telix Pharmaceuticals (Innovations) Pty Limited | Not yet recruiting --> Recruiting | Initiation date: Nov 2025 --> Mar 2026 | Trial primary completion date: Dec 2026 --> Aug 2027
Enrollment open • Trial initiation date • Trial primary completion date
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CA9 (Carbonic anhydrase 9)
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177Lu-DOTA-girentuximab (TLX250)
10d
Multiplex CD30/Carbonic Anhydrase IX Lateral Flow Assay for Rapid Triage of Suspected BIA-ALCL in Peri-implant Seroma Fluid. (PubMed, Aesthet Surg J)
In this retrospective cohort, a multiplex CD30/CA9 LFA distinguished BIA-ALCL from benign peri-implant seromas with high sensitivity and favorable study-conditional NPV, supporting feasibility as a rapid triage adjunct to prioritize confirmatory pathology. Prospective studies with standardized pre-analytics, blinded interpretation, and prevalence-representative cohorts are required to establish real-world predictive values and clinical utility.
Journal
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TNFRSF8 (TNF Receptor Superfamily Member 8) • CA9 (Carbonic anhydrase 9)
13d
Renal hemangioblastoma mimicking clear cell renal cell carcinoma: a case report emphasizing contrast-enhanced ultrasound findings. (PubMed, BMC Nephrol)
Sporadic RH should be included in the differential diagnosis of a small hypervascular renal mass that mimics ccRCC. In this case, relative hyperenhancement persisting at 180 s on CEUS may represent a nonspecific descriptive clue, but definitive diagnosis still requires integrated pathologic interpretation.
Journal
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CA9 (Carbonic anhydrase 9) • MME (Membrane Metalloendopeptidase) • PAX2 (Paired Box 2) • PAX8 (Paired box 8)
13d
Fast and sensitive spatial proteomics using laser capture microdissection and a protein immobilization-based capillary microreactor. (PubMed, Anal Chim Acta)
The LCM-PICR workflow provides a rapid and sensitive sample processing strategy for LC-MS/MS-based spatial proteomics from micrometer-scale tissue regions. This approach supports detection of spatially structured protein variation within tumors and offers a practical tool for studying intratumoral heterogeneity and spatially resolved disease biology.
Journal
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NPM1 (Nucleophosmin 1) • CA9 (Carbonic anhydrase 9)
14d
Discovery of a Novel Coumarin/Thiazole Chalcone Hybrid as a Potent Dual Inhibitor of Tubulin and Carbonic Anhydrases IX & XII with Promising Anti-Proliferative Activity. (PubMed, Molecules)
Human liver microsomal assays indicated measurable metabolic stability, while molecular docking and in silico ADMET predictions supported target engagement and drug-like properties. Collectively, these findings identify compound 6 as a promising multitarget anticancer lead integrating antimitotic, metabolic, and anti-angiogenic mechanisms.
Journal
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KDR (Kinase insert domain receptor) • CA9 (Carbonic anhydrase 9)
14d
Clear Cell Renal Cell Carcinoma with Synchronous Bladder Metastasis: Diagnostic, Surgical, and Pathological Insights from a Rare Presentation. (PubMed, J Clin Med)
This case highlights the rare occurrence of ccRCC with synchronous bladder metastasis and underscores the importance of comprehensive imaging, detailed morphologic and immunohistochemical evaluation, and a multidisciplinary approach. Robot-assisted cytoreductive surgery combined with modern systemic therapy represents an effective strategy for advanced ccRCC, emphasizing the need for individualized treatment and long-term follow-up in atypical metastatic scenarios.
Journal
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CA9 (Carbonic anhydrase 9) • MME (Membrane Metalloendopeptidase) • GATA3 (GATA binding protein 3) • PAX8 (Paired box 8)
15d
Garciniagifolone A, derived from Garcinia multiflora fruits, inhibits triple-negative breast cancer cells and organoids growth by targeting CA9. (PubMed, Front Cell Dev Biol)
Elevated ROS by GA activated the JNK pathway and triggered NLRP3 inflammasome assembly, resulting in caspase-1-mediated cleavage of gasdermin D (GSDMD) and subsequent pyroptosis, alongside caspase-3-dependent apoptosis. Collectively, GA exerted its potent anti-TNBC activity by targeting CA9 to dysregulate autophagy and induce ROS-mediated pyroptosis/apoptosis, presenting a promising low-toxicity therapeutic strategy.
Journal
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CA9 (Carbonic anhydrase 9) • CASP3 (Caspase 3) • NLRP3 (NLR Family Pyrin Domain Containing 3)