Overexpression of CXC chemokines by an adrenocortical carcinoma: a novel clinical syndrome
Abstract
A patient with adrenocortical carcinoma presented with fever, leukocytosis, and increased acute phase reactants. The tumor was infiltrated with neutrophils. Immunohistochemical staining of the tumor showed positive signal for epithelial neutrophil-activating protein-78, an angiogenic and chemotactic CXC chemokine. Conditioned medium from tumor-derived cells (RL-251) showed high concentration of IL-8, epithelial neutrophil-activating protein-78, Gro alpha, and Gro gamma, angiogenic CXC chemokines with a potential role in tumorigenesis. An adrenal cancer/severe combined immunodeficiency mouse chimera was developed. Mice grew tumors rapidly, and circulating levels of IL-8 and epithelial neutrophil-activating protein-78 were detected. In contrast, animals transplanted with NCI-H295 cells, a nonchemokine-secreting cell line, grew tumors more slowly and did not have detectable chemokine levels. Similar to the patient, mice with RL-251 tumors developed marked leukocytosis and neutrophilia, and their tumors were infiltrated with neutrophils. Mice were passively immunized with epithelial neutrophil-activating protein-78 antisera. A marked decrease in tumor growth was observed. Potential for chemokine production by other adrenocortical tumors was investigated by RT-PCR in archival material. Six of seven adrenal carcinomas and one of three adenomas had cDNA for IL-8; six of seven carcinomas and the three adenomas had cDNA for epithelial neutrophil-activating protein-78. We concluded that the clinical presentation of this case resulted from increased tumor production of chemotactic chemokines. Through their angiogenic and chemotactic properties these chemokines may play an important role in adrenal tumorigenesis.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Adrenocortical carcinomas are retroperitoneal and may present late, often having reached a large size.
“As ACCs are retroperitoneal they may present late and have often reached a large size (131).”
From Adrenal incidentaloma (2020) · cites this paper as [131]
Other rare paraneoplastic syndromes are hyperreninemic hyperaldosteronism, erythropoietin-associated polycythemia, and leukocytosis (caused by chemokine release from the tumor).
“Other rare paraneoplastic syndromes are hyperreninemic hyperaldosteronism, erythropoietin-associated polycythemia, and leukocytosis (caused by chemokine release from the tumor) (82–84).”
From Adrenocortical carcinoma (2014) · cites this paper as [84]
Cites
New Colorimetric Cytotoxicity Assay for Anticancer-Drug Screening
Skehan, P., Storeng, R., Scudiero, D. A., Monks, A. P., McMahon, J., Vistica, D. T., Warren, J. T., Bokesch, H. R., Kenney, S., & Boyd, M. R. (1990) · JNCI Journal of the National Cancer Institute · doi:10.1093/jnci/82.13.1107 · Cited by 9,801 · see citing works
Secretory products of macrophages.
Nathan, C. F. (1987) · Journal of Clinical Investigation · doi:10.1172/jci112815 · Cited by 2,615 · see citing works
Interleukin-8 as a macrophage-derived mediator of angiogenesis
Koch, A. E., Polverini, P. J., Kunkel, S. L., Harlow, L. A., DiPietro, L. A., Elner, V. M., Elner, S. G., & Strieter, R. M. (1992) · Science · doi:10.1126/science.1281554 · Cited by 2,135 · see citing works
Self-citationAaronson, S. A. (1991) · Science · doi:10.1126/science.1659742 · Cited by 2,017 · see citing works
The Functional Role of the ELR Motif in CXC Chemokine-mediated Angiogenesis
Strieter, R. M., Polverini, P. J., Kunkel, S. L., Arenberg, D. A., Burdick, M. D., Kasper, J., Dzuiba, J., Van Damme, J., Walz, A., Marriott, D., et al. (1995) · Journal of Biological Chemistry · doi:10.1074/jbc.270.45.27348 · Cited by 1,222 · see citing works
Self-citationTHE DETERMINATION OF 17, 21-DIHYDROXY-20-KETOSTEROIDS IN URINE AND PLASMA
SILBER, R. H., & Porter, C. C. (1954) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(18)65419-5 · Cited by 781 · see citing works
Biology and biochemistry of the chemokines: a family of chemotactic and inflammatory cytokines.
Miller, M. D., & Krangel, M. S. (1992) · PubMed · Cited by 731 · see citing works
Goustin, A. S., Leof, E. B., Shipley, G. D., & Moses, H. L. (1986) · PubMed · Cited by 530 · see citing works
Gazdar, A. F., Oie, H. K., Shackleton, C. H. L., Chen, T. R., Triche, T. J., Myers, C. E., Chrousos, G. P., Brennan, M. F., Stein, C. A., & Rocca, R. V. L. (1990) · PubMed · Cited by 446 · see citing works
Inhibition of interleukin-8 reduces tumorigenesis of human non-small cell lung cancer in SCID mice.
Arenberg, D. A., Kunkel, S. L., Polverini, P. J., Glass, M., Burdick, M. D., & Strieter, R. M. (1996) · Journal of Clinical Investigation · doi:10.1172/jci118734 · Cited by 401 · see citing works
Self-citationTransforming growth factors and the regulation of cell proliferation
Lyons, R. M., & Moses, H. L. (1990) · European Journal of Biochemistry · doi:10.1111/j.1432-1033.1990.tb15327.x · Cited by 382 · see citing works
Burgess, A. W. (1985) · Australian and New Zealand Journal of Surgery · doi:10.1111/j.1445-2197.1985.tb00868.x · Cited by 353 · see citing works
Reincke, M., Nieke, J., Krestin, G. P., Saeger, W., Allolio, B., & Winkelmann, W. (1992) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.75.3.1517373 · Cited by 346 · see citing works
Koch, A. E., Kunkel, S. L., Harlow, L. A., Mazarakis, D. D., Haines, G. K., Burdick, M. D., Pope, R. M., Walz, A., & Strieter, R. M. (1994) · Journal of Clinical Investigation · doi:10.1172/jci117414 · Cited by 265 · see citing works
Self-citationArenberg, D. A., Keane, M. P., DiGiovine, B., Kunkel, S. L., Morris, S. B., Xue, Y. Y., Burdick, M. D., Glass, M. C., Iannettoni, M. D., & Strieter, R. M. (1998) · Journal of Clinical Investigation · doi:10.1172/jci3145 · Cited by 259 · see citing works
Self-citationRole of C-X-C chemokines as regulators of angiogenesis in lung cancer
Strieter, R. M., Polverini, P. J., Arenberg, D. A., Walz, A., Opdenakker, G., Damme, J. V., & Kunkel, S. L. (1995) · Journal of Leukocyte Biology · doi:10.1002/jlb.57.5.752 · Cited by 246 · see citing works
Self-citationThe role of CXC chemokines in the regulation of angiogenesis in non-small cell lung cancer
Arenberg, D. A., Polverini, P. J., Kunkel, S. L., Shanafelt, A. B., Hesselgesser, J., Horuk, R., & Strieter, R. M. (1997) · Journal of Leukocyte Biology · doi:10.1002/jlb.62.5.554 · Cited by 158 · see citing works
Self-citationGrowth factors as transforming proteins
Heldin, C., & Westermark, B. (1989) · European Journal of Biochemistry · doi:10.1111/j.1432-1033.1989.tb15041.x · Cited by 122 · see citing works
Aberrant Interleukin-1 Receptors in a Cortisol-Secreting Adrenal Adenoma Causing Cushing's Syndrome
Willenberg, H. S., Stratakis, C. A., Marx, C., Ehrhart‐Bornstein, M., Chrousos, G. P., & Bornstein, S. R. (1998) · New England Journal of Medicine · doi:10.1056/nejm199807023390105 · Cited by 103 · see citing works
Macrophages within the human adrenal gland
Gonz�lez-Hern�ndez, J. A., Bornstein, S. R., Ehrhart‐Bornstein, M., Geschwend, J. E., Adler, G., & Scherbaum, W. A. (1994) · Cell and Tissue Research · doi:10.1007/bf00414161 · Cited by 72 · see citing works
Sklar, L. A., Jesaitis, A. J., & Painter, R. G. (1984) · Springer eBooks · doi:10.1007/978-1-4757-4862-8_2 · Cited by 53 · see citing works
Demystified ... the polymerase chain reaction.
Baumforth, K. R. N., Nelson, P. N., Digby, J., O’Neil, J. D., & Murray, P. G. (1999) · Molecular Pathology · doi:10.1136/mp.52.1.1 · Cited by 51 · see citing works
Transductional Mechanisms of Chemoattractant Receptors on Leukocytes
Snyderman, R., & Pike, M. C. (1984) · Springer eBooks · doi:10.1007/978-1-4757-4862-8_1 · Cited by 40 · see citing works
Vasoactive Intestinal Peptide and Immune Function
Ottaway, C. A. (1991) · Elsevier eBooks · doi:10.1016/b978-0-12-043780-1.50012-9 · Cited by 35 · see citing works
SCHTEINGART, D. E. (1992) · The Endocrinologist · doi:10.1097/00019616-199205000-00003 · Cited by 22 · see citing works
Self-citationPhagocytosis of Candida albicans Enhances Malignant Behavior of Murine Tumor Cells
Ginsburg, I., Fligiel, S., Kunkel, R. G., Riser, B. L., & Varani, J. (1987) · Science · doi:10.1126/science.3317835 · Cited by 17 · see citing works
Chaney, A. L., Young, N. F., & Dryer, R. L. (1958) · Standard methods of clinical chemistry · doi:10.1016/b978-1-4831-9683-1.50014-9 · Cited by 13 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Else, T., Kim, A. C., Sabolch, A., Raymond, V. M., Kandathil, A., Caoili, E. M., Jolly, S., Miller, B. S., Giordano, T. J., & Hammer, G. D. (2014) · Endocrine Reviews · doi:10.1210/er.2013-1029 · Cited by 892 · see citing works
Self-citationSherlock, M., Scarsbrook, A., Abbas, A., Fraser, S., Limumpornpetch, P., Dineen, R., & Stewart, P. M. (2020) · Endocrine Reviews · doi:10.1210/endrev/bnaa008 · Cited by 347 · see citing works
“As ACCs are retroperitoneal they may present late and have often reached a large size (131).”
BackgroundBornstein, S., Rutkowski, H., & Vrezas, I. (2004) · Molecular and Cellular Endocrinology · doi:10.1016/j.mce.2003.11.022 · Cited by 340 · see citing works
den Steen, P. E. V., Wuyts, A., Husson, S. J., Proost, P., Damme, J. V., & Opdenakker, G. (2003) · European Journal of Biochemistry · doi:10.1046/j.1432-1033.2003.03760.x · Cited by 289 · see citing works
Rainey, W. E., Saner, K. J., & Schimmer, B. P. (2004) · Molecular and Cellular Endocrinology · doi:10.1016/j.mce.2003.12.020 · Cited by 239 · see citing works
Preclinical targeting of the type I insulin-like growth factor receptor in adrenocortical carcinoma
Barlaskar, F. M., Spalding, A. C., Heaton, J. H., Kuick, R., Kim, A. C., Thomas, D. G., Giordano, T. J., Ben-Josef, E., & Hammer, G. D. (2009) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2008-1456 · Cited by 189 · see citing works
Self-citationHuman adrenocortical carcinoma cell lines
Wang, T., & Rainey, W. E. (2011) · Molecular and Cellular Endocrinology · doi:10.1016/j.mce.2011.08.041 · Cited by 149 · see citing works
Neutrophil-mediated tumour angiogenesis: Subversion of immune responses to promote tumour growth
Tazzyman, S. J., Niaz, H. A., & Murdoch, C. (2013) · Seminars in Cancer Biology · doi:10.1016/j.semcancer.2013.02.003 · Cited by 135 · see citing works
Approach to the Patient with Adrenocortical Carcinoma
Lacroix, A. (2010) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2010-0990 · Cited by 81 · see citing works
ELR+ CXC chemokine expression in benign and malignant colorectal conditions
Rubie, C., Frick, V. O., Wagner, M., Schuld, J., Gräber, S., Brittner, B., Bohle, R. M., & Schilling, M. K. (2008) · BMC Cancer · doi:10.1186/1471-2407-8-178 · Cited by 67 · see citing works
GROα Is Highly Expressed in Adenocarcinoma of the Colon and Down-Regulates Fibulin-1
Wen, Y., Giardina, S. F., Hamming, D., Greenman, J., Zachariah, E., Bacolod, M. D., Liu, H., Shia, J., Amenta, P. S., Barany, F., et al. (2006) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-06-0736 · Cited by 58 · see citing works
Rotondi, M., Falorni, A., Bellis, A. D., Laureti, S., Ferruzzi, P., Romagnani, P., Buonamano, A., Lazzeri, E., Crescioli, C., Mannelli, M., et al. (2005) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2004-1062 · Cited by 59 · see citing works
Comparison of Aldosterone Production Among Human Adrenocortical Cell Lines
Wang, T., Rowland, J., Parmar, J., Nesterova, M., Seki, T., & Rainey, W. E. (2012) · Hormone and Metabolic Research · doi:10.1055/s-0031-1298019 · Cited by 53 · see citing works
Signaling Pathways in Adrenocortical Cancer
Kirschner, L. S. (2002) · Annals of the New York Academy of Sciences · doi:10.1111/j.1749-6632.2002.tb04338.x · Cited by 49 · see citing works
Evaluation of Telomere Length Maintenance Mechanisms in Adrenocortical Carcinoma
Else, T., Giordano, T. J., & Hammer, G. D. (2008) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2007-1840 · Cited by 47 · see citing works
Self-citationUpregulated JAG1 Enhances Cell Proliferation in Adrenocortical Carcinoma
Simon, D. P., Giordano, T. J., & Hammer, G. D. (2012) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-11-2371 · Cited by 43 · see citing works
Self-citationKuai, R., Subramanian, C., White, P. T., Timmermann, B. N., Moon, J. J., Cohen, M. S., & Schwendeman, A. A. (2017) · International Journal of Nanomedicine · doi:10.2147/ijn.s140591 · Cited by 39 · see citing works
Toll-Like Receptors in Endocrine Disease and Diabetes
Kanczkowski, W., Ziegler, C., Zacharowski, K. D., & Bornstein, S. (2008) · NeuroImmunoModulation · doi:10.1159/000135624 · Cited by 39 · see citing works
Resveratrol stimulation induces interleukin-8 gene transcription via NF-κB
Thiel, G., Ulrich, M., Mukaida, N., & Rößler, O. G. (2018) · Pharmacological Research · doi:10.1016/j.phrs.2018.07.003 · Cited by 30 · see citing works
Interleukin-8 Synthesis, Regulation, and Steroidogenic Role in H295R Human Adrenocortical Cells
Romero, D. G., Vergara, G. R., Zhu, Z., Covington, G. S., Plonczynski, M. W., Yanes, L. L., Gómez-Sánchez, E. P., & Gómez-Sánchez, C. E. (2005) · Endocrinology · doi:10.1210/en.2005-0951 · Cited by 30 · see citing works
Bouraïma, H., Lireux, B., Mittre, H., Benhaïm, A., Herrou, M., MAHOUDEAU, J. A., Guillon-Metz, F., Kottler, M., & Reznik, Y. (2003) · European Journal of Endocrinology · doi:10.1530/eje.0.1480457 · Cited by 27 · see citing works
THE ADRENAL HORMONE METABOLISM IN THE IMMUNE/INFLAMMATORY REACTION
Bornstein, S., & Rutkowski, H. (2002) · Endocrine Research · doi:10.1081/erc-120016992 · Cited by 27 · see citing works
Primary Cultures and Cell Lines for In Vitro Modeling of the Human Adrenal Cortex
Nanba, K., Blinder, A., & Rainey, W. E. (2021) · The Tohoku Journal of Experimental Medicine · doi:10.1620/tjem.253.217 · Cited by 25 · see citing works
Murooka, T. T., Ward, S. E., & Fish, E. N. (2005) · Springer eBooks · doi:10.1007/0-387-24361-5_2 · Cited by 21 · see citing works
Preclinical Models of Adrenocortical Cancer
Sedlack, A. J. H., Hatfield, S. J., Kumar, S., Arakawa, Y., Roper, N., Sun, N.-Y., Nilubol, N., Kiseljak‐Vassiliades, K., Hoang, C. D., Bergsland, E. K., et al. (2023) · Cancers · doi:10.3390/cancers15112873 · Cited by 17 · see citing works
What Can We Learn from Gene Expression Profiling for Adrenal Tumor Management?
Bornstein, S. R., & Hornsby, P. J. (2005) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2005-0065 · Cited by 12 · see citing works
Scicluna, P., Caramuta, S., Hanna, H., Xu, C., Fröbom, R., Akhtar, M., Gao, J., Shi, H., Kjellman, M., Almgren, M., et al. (2022) · International Journal of Oncology · doi:10.3892/ijo.2022.5430 · Cited by 7 · see citing works
Mouse models of adrenal tumorigenesis
Hantel, C., & Beuschlein, F. (2010) · Best Practice & Research Clinical Endocrinology & Metabolism · doi:10.1016/j.beem.2010.10.010 · Cited by 6 · see citing works
Development and Characterization of 3-Dimensional Cell Culture Models of Adrenocortical Carcinoma
Feely, S., Mullen, N., Donlon, P. T., Reidy, E., Challapalli, R. S., Hassany, M., Sorushanova, A., Martínez, E. R., Owens, P., Quinn, A. M., et al. (2024) · Endocrinology · doi:10.1210/endocr/bqae159 · Cited by 6 · see citing works
SCHTEINGART, D. E., Benitez, R. S., Bradford, C. R., Narayan, A., & Wang, S. (2010) · PubMed · Cited by 5 · see citing works
Self-citationThiel, G., Ulrich, M., Mukaida, N., & Rößler, O. G. (2019) · Cytokine · doi:10.1016/j.cyto.2019.154862 · Cited by 4 · see citing works
Pan-Cancer Analysis of TLE3 Revealed Its Value in Tumor Microenvironment and Prognosis
Li, T., Liu, R., Zhang, G., Jia, Y., Pan, L., Li, Y., & Jia, C. (2022) · Journal of Oncology · doi:10.1155/2022/4085770 · Cited by 3 · see citing works
Validated predictive model for treatment and prognosis of adrenocortical carcinoma
Zuber, S. M., Kuchta, K. M., Holoubek, S. A., Khokar, A. M., Moo‐Young, T. A., Prinz, R. A., & Winchester, D. J. (2023) · Surgery · doi:10.1016/j.surg.2023.08.047 · Cited by 3 · see citing works
Murvelashvili, N., Polanco, P. M., Khorsand, S., Marrero, J. A., Jia, L., Mirfakhraee, S., Else, T., Habra, M. A., Cole, S., & Hamidi, O. (2022) · Journal of the Endocrine Society · doi:10.1210/jendso/bvac101 · Cited by 3 · see citing works
A Case of an Adrenocortical Carcinoma with Pulmonary Embolism as the Initial Manifestation
Lee, H. J., Kwak, J. Y., Kim, Y. J., Kim, T. H., Lee, J. D., Lee, H. W., Kim, H. J., Kim, D. J., Chung, Y., Lee, K. W., et al. (2012) · Endocrinology and Metabolism · doi:10.3803/enm.2012.27.1.93 · Cited by 2 · see citing works
Creemers, S. G., Hofland, L. J., & Feelders, R. A. (2016) · Springer eBooks · doi:10.1007/978-3-319-44136-8_12 · Cited by 2 · see citing works
Cellular and Molecular Pathology of Adrenocortical Carcinoma
Else, T. (2009) · Springer eBooks · doi:10.1007/978-0-387-77236-3_9 · Cited by 1 · see citing works
A Rare Case of Interleukin-6-producing Adrenocortical Carcinoma Presenting with a Persistent Fever
Oguni, K., Goshima, Y., Tatsushima, K., Hayashida, M., Urakami, S., Ito, S., Yamazaki, Y., Sasano, H., Takeuchi, Y., & Takeshita, A. (2025) · Internal Medicine · doi:10.2169/internalmedicine.4599-24 · Cited by 1 · see citing works
An organoid model of the human adrenal cortex identifies drivers of steroidogenesis and zonation
Akkerman, N., Xu, Q., Valdeolivas, A., Okuda, R., Gaspa-Toneu, L., Cubela, I., Richardson, M., Giroud, N., Camp, J. G., & Beumer, J. (2026) · Cell Press Blue · doi:10.1016/j.cpblue.2026.100015 · Cited by 1 · see citing works
Clinical Presentation and Initial Diagnosis
Allolio, B., & Faßnacht, M. (2009) · Springer eBooks · doi:10.1007/978-0-387-77236-3_4 · Cited by 1 · see citing works
Parmar, J., Kulharya, A. S., & Rainey, W. E. (2009) · Springer eBooks · doi:10.1007/978-0-387-77236-3_18 · Cited by 1 · see citing works
Allolio, B., & Faßnacht, M. (2015) · Elsevier eBooks · doi:10.1016/b978-0-323-18907-1.00107-4
Mouse Models of Adrenal Tumorigenesis
Beuschlein, F. (2009) · Springer eBooks · doi:10.1007/978-0-387-77236-3_19
Ardelino, S. K. A. R., de Carvalho, A. C. P., Alves, E. D. B., Cruzick, G. M., Magrani, L. M., & de Melo, J. V. (2024) · Revista Contemporânea · doi:10.56083/rcv4n7-123
- Authors
- Schteingart, D. E., Giordano, T. J., Benitez, R. S., Burdick, M. D., Starkman, M. N., Arenberg, D. A., & Strieter, R. M.
- Affiliations
- University of Michigan (US)
- Pathology (T.J.G.), Ann Arbor, Michigan 48109
- University of California, Los Angeles (US)
- Corresponding author
- Schteingart, David E.
- Venue
- The Journal of Clinical Endocrinology & Metabolism
- Publisher
- The Endocrine Society
- Published
- 2001-08-01
- Volume
- 86
- Issue
- 8
- Pages
- 3968-3974
- ISSN
- 0021-972X (ISSN-L)
- 1945-7197
- OpenAlex
- W2141837648
- Cited by
- 45
- References
- 27
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2013: 2 · 2012: 3
- FWCI
- 0.89
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Heart, Lung, and Blood Institute (HL66027, R01HL066027)
- National Cancer Institute (CA-87879, R01CA087879)
- National Center for Research Resources (NCRR-M-01-RR-000-42)
- Topics
- Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
- Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Renal cell carcinoma treatment
- Keywords
- adrenocortical carcinoma, CXC chemokines, interleukin-8, neutrophil infiltration, leukocytosis, fever, acute phase proteins, tumor angiogenesis, tumor growth, adrenal adenoma
- MeSH terms
- Adenoma, Adrenal Cortex Neoplasms, Adrenocorticotropic Hormone, Aged, Circadian Rhythm, Fever, Humans, Hydrocortisone, Immunohistochemistry, Leukocytosis, Male, Neutrophils, Syndrome, Tumor Cells, Cultured, 17-Hydroxycorticosteroids, 17-Ketosteroids, Interleukin-8, Neutrophil Activation, Chemokines, CXC, Reverse Transcriptase Polymerase Chain Reaction, Chemokine CXCL5
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review