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Erschienen in: Annals of Surgical Oncology 2/2009

01.02.2009 | Endocrine Tumors

Principal Component Analysis, Hierarchical Clustering, and Decision Tree Assessment of Plasma mRNA and Hormone Levels as an Early Detection Strategy for Small Intestinal Neuroendocrine (Carcinoid) Tumors

verfasst von: Irvin M. Modlin, MD, PhD, DSc, FRCS (Eng & Ed), Björn I. Gustafsson, Ignat Drozdov, Boaz Nadler, Roswitha Pfragner, Mark Kidd

Erschienen in: Annals of Surgical Oncology | Ausgabe 2/2009

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Abstract

Incidence of neuroendocrine tumors (NETs) is increasing (approximately 6%/year), but clinical presentation is nonspecific, resulting in delays in diagnosis (5–7 years; approximately 70% have metastases). This reflects absence of a sensitive plasma marker. The aim of this study is to investigate whether detection of circulating messenger RNA (mRNA) alone or in combination with circulating NET-related hormones and growth factors can detect gastrointestinal NET disease. The small intestinal (SI) NET cell line KRJ-I was used to define the sensitivity of real-time polymerase chain reaction (PCR) for mRNA detection in blood. NSE, Tph-1, and VMAT 2 transcripts were identified from one KRJ-I cell/ml blood. mRNA from the tissue and plasma of SI-NETs (n = 12) and gastric NETs (n = 7), and plasma from healthy controls (n = 9) was isolated and real-time PCR performed. Tph-1 was a specific marker of SI-NETs (58%, p < 0.03) whereas CgA transcripts did not differentiate tumors from controls. Patients with metastatic disease expressed more marker transcripts than localized tumors (75% versus 18%, p < 0.02). Plasma 5-hydroxytryptamine (5-HT), chromogranin A (CgA), ghrelin, and connective tissue growth factor (CTGF) fragments were measured, combined with mRNA levels, and a predictive mathematical model for NET diagnosis developed using decision trees. The sensitivity and specificity to diagnose SI-NETs and gastric NETs were 81.2% and 100%, and 71.4% and 55.6%, respectively. We conclude that mRNA from one NET cell/ml blood can be detected. Circulating plasma Tph-1 is a promising marker gene for SI-NET disease (specificity 100%) while an increased number of marker transcripts (>2) correlated with disease spread. Including NET-related circulating hormones and growth factors in the algorithm increased the sensitivity of detection of SI-NETs from 58 to 82%.
Literatur
1.
Zurück zum Zitat Cleary S, Phillips JK, Huynh TT, et al. Chromogranin a expression in phaeochromocytomas associated with von Hippel-Lindau syndrome and multiple endocrine neoplasia type 2. Horm Metab Res. 2007;39:876–83.PubMedCrossRef Cleary S, Phillips JK, Huynh TT, et al. Chromogranin a expression in phaeochromocytomas associated with von Hippel-Lindau syndrome and multiple endocrine neoplasia type 2. Horm Metab Res. 2007;39:876–83.PubMedCrossRef
2.
Zurück zum Zitat Gustafsson BI, Kidd M, Modlin IM. Neuroendocrine tumors of the diffuse neuroendocrine system. Curr Opin Oncol. 2008;20:1–12.PubMed Gustafsson BI, Kidd M, Modlin IM. Neuroendocrine tumors of the diffuse neuroendocrine system. Curr Opin Oncol. 2008;20:1–12.PubMed
3.
Zurück zum Zitat Perkins GL, Slater ED, Sanders GK, Prichard JG. Serum tumor markers. Am Fam Phys. 2003;68:1075–82. Perkins GL, Slater ED, Sanders GK, Prichard JG. Serum tumor markers. Am Fam Phys. 2003;68:1075–82.
4.
Zurück zum Zitat Visus C, Andres R, Mayordomo JI, et al. Prognostic role of circulating melanoma cells detected by reverse transcriptase-polymerase chain reaction for tyrosinase mRNA in patients with melanoma. Melanoma Res. 2007;17:83–9.PubMedCrossRef Visus C, Andres R, Mayordomo JI, et al. Prognostic role of circulating melanoma cells detected by reverse transcriptase-polymerase chain reaction for tyrosinase mRNA in patients with melanoma. Melanoma Res. 2007;17:83–9.PubMedCrossRef
5.
Zurück zum Zitat Cristofanilli M, Broglio KR, Guarneri V, et al. Circulating tumor cells in metastatic breast cancer: biologic staging beyond tumor burden. Clin Breast Cancer. 2007;7:471–9.PubMedCrossRef Cristofanilli M, Broglio KR, Guarneri V, et al. Circulating tumor cells in metastatic breast cancer: biologic staging beyond tumor burden. Clin Breast Cancer. 2007;7:471–9.PubMedCrossRef
6.
Zurück zum Zitat Pfitzenmaier J, Ellis WJ, Hawley S, et al. The detection and isolation of viable prostate-specific antigen positive epithelial cells by enrichment: a comparison to standard prostate-specific antigen reverse transcriptase polymerase chain reaction and its clinical relevance in prostate cancer. Urol Oncol. 2007;25:214–20.PubMed Pfitzenmaier J, Ellis WJ, Hawley S, et al. The detection and isolation of viable prostate-specific antigen positive epithelial cells by enrichment: a comparison to standard prostate-specific antigen reverse transcriptase polymerase chain reaction and its clinical relevance in prostate cancer. Urol Oncol. 2007;25:214–20.PubMed
7.
Zurück zum Zitat Zitt M, Zitt M, Muller HM, et al. Disseminated tumor cells in peripheral blood: a novel marker for therapy response in locally advanced rectal cancer patients undergoing preoperative chemoradiation. Dis Colon Rectum. 2006;49:1484–91.PubMedCrossRef Zitt M, Zitt M, Muller HM, et al. Disseminated tumor cells in peripheral blood: a novel marker for therapy response in locally advanced rectal cancer patients undergoing preoperative chemoradiation. Dis Colon Rectum. 2006;49:1484–91.PubMedCrossRef
8.
Zurück zum Zitat Wu CH, Lin SR, Hsieh JS, et al. Molecular detection of disseminated tumor cells in the peripheral blood of patients with gastric cancer: evaluation of their prognostic significance. Dis Markers. 2006;22:103–9.PubMed Wu CH, Lin SR, Hsieh JS, et al. Molecular detection of disseminated tumor cells in the peripheral blood of patients with gastric cancer: evaluation of their prognostic significance. Dis Markers. 2006;22:103–9.PubMed
9.
Zurück zum Zitat Dawood S, Cristofanilli M. Integrating circulating tumor cell assays into the management of breast cancer. Curr Treat Options Oncol. 2007;8:89–95.PubMedCrossRef Dawood S, Cristofanilli M. Integrating circulating tumor cell assays into the management of breast cancer. Curr Treat Options Oncol. 2007;8:89–95.PubMedCrossRef
10.
Zurück zum Zitat Moreno JG, O’Hara SM, Gross S, et al. Changes in circulating carcinoma cells in patients with metastatic prostate cancer correlate with disease status. Urology. 2001;58:386–92.PubMedCrossRef Moreno JG, O’Hara SM, Gross S, et al. Changes in circulating carcinoma cells in patients with metastatic prostate cancer correlate with disease status. Urology. 2001;58:386–92.PubMedCrossRef
11.
Zurück zum Zitat Allard WJ, Matera J, Miller MC, et al. Tumor cells circulate in the peripheral blood of all major carcinomas but not in healthy subjects or patients with nonmalignant diseases. Clin Cancer Res. 2004;10:6897–904.PubMedCrossRef Allard WJ, Matera J, Miller MC, et al. Tumor cells circulate in the peripheral blood of all major carcinomas but not in healthy subjects or patients with nonmalignant diseases. Clin Cancer Res. 2004;10:6897–904.PubMedCrossRef
12.
Zurück zum Zitat Anker P, Mulcahy H, Stroun M. Circulating nucleic acids in plasma and serum as a noninvasive investigation for cancer: time for large-scale clinical studies? Int J Cancer. 2003;103:149–52.PubMedCrossRef Anker P, Mulcahy H, Stroun M. Circulating nucleic acids in plasma and serum as a noninvasive investigation for cancer: time for large-scale clinical studies? Int J Cancer. 2003;103:149–52.PubMedCrossRef
13.
Zurück zum Zitat Lo KW, Lo YM, Leung SF, et al. Analysis of cell-free Epstein–Barr virus associated RNA in the plasma of patients with nasopharyngeal carcinoma. Clin Chem. 1999;45:1292–4.PubMed Lo KW, Lo YM, Leung SF, et al. Analysis of cell-free Epstein–Barr virus associated RNA in the plasma of patients with nasopharyngeal carcinoma. Clin Chem. 1999;45:1292–4.PubMed
14.
Zurück zum Zitat Kopreski MS, Benko FA, Kwak LW, Gocke CD. Detection of tumor messenger RNA in the serum of patients with malignant melanoma. Clin Cancer Res. 1999;5:1961–5.PubMed Kopreski MS, Benko FA, Kwak LW, Gocke CD. Detection of tumor messenger RNA in the serum of patients with malignant melanoma. Clin Cancer Res. 1999;5:1961–5.PubMed
15.
Zurück zum Zitat Goebel G, Zitt M, Zitt M, Muller HM. Circulating nucleic acids in plasma or serum (CNAPS) as prognostic and predictive markers in patients with solid neoplasias. Dis Markers. 2005;21:105–20.PubMed Goebel G, Zitt M, Zitt M, Muller HM. Circulating nucleic acids in plasma or serum (CNAPS) as prognostic and predictive markers in patients with solid neoplasias. Dis Markers. 2005;21:105–20.PubMed
16.
Zurück zum Zitat YK, Lo YM. Diagnostic developments involving cell-free (circulating) nucleic acids. Clin Chim Acta 2006;363:187–96.CrossRef YK, Lo YM. Diagnostic developments involving cell-free (circulating) nucleic acids. Clin Chim Acta 2006;363:187–96.CrossRef
17.
Zurück zum Zitat El-Hefnawy T, Raja S, Kelly L, et al. Characterization of amplifiable, circulating RNA in plasma and its potential as a tool for cancer diagnostics. Clin Chem. 2004;50:564–73.PubMedCrossRef El-Hefnawy T, Raja S, Kelly L, et al. Characterization of amplifiable, circulating RNA in plasma and its potential as a tool for cancer diagnostics. Clin Chem. 2004;50:564–73.PubMedCrossRef
18.
Zurück zum Zitat de Herder WW. Biochemistry of neuroendocrine tumours. Best Pract Res Clin Endocrinol Metab. 2007;21:33–41.PubMedCrossRef de Herder WW. Biochemistry of neuroendocrine tumours. Best Pract Res Clin Endocrinol Metab. 2007;21:33–41.PubMedCrossRef
19.
Zurück zum Zitat Stridsberg M, Oberg K, Li Q, et al. Measurement of chromogranin A, chromogranin B (secretogranin I), chromogranin C (secretogranin II) and pancreastatin in plasma and urine from patients with carcinoid tumours and endocrine pancreatic tumours. J Endocrinol. 1995;144:49–59.PubMedCrossRef Stridsberg M, Oberg K, Li Q, et al. Measurement of chromogranin A, chromogranin B (secretogranin I), chromogranin C (secretogranin II) and pancreastatin in plasma and urine from patients with carcinoid tumours and endocrine pancreatic tumours. J Endocrinol. 1995;144:49–59.PubMedCrossRef
20.
Zurück zum Zitat Kidd M, Modlin IM, Shapiro MD, et al. CTGF, intestinal stellate cells and carcinoid fibrogenesis. World J Gastroenterol. 2007;13:5208–16.PubMed Kidd M, Modlin IM, Shapiro MD, et al. CTGF, intestinal stellate cells and carcinoid fibrogenesis. World J Gastroenterol. 2007;13:5208–16.PubMed
21.
Zurück zum Zitat Soga J. Early-stage carcinoids of the gastrointestinal tract: an analysis of 1914 reported cases. Cancer. 2005;103:1587–95.PubMedCrossRef Soga J. Early-stage carcinoids of the gastrointestinal tract: an analysis of 1914 reported cases. Cancer. 2005;103:1587–95.PubMedCrossRef
22.
Zurück zum Zitat Modlin IM, Kidd M, Pfragner R, et al. The functional characterization of normal and neoplastic human enterochromaffin cells. J Clin Endocrinol Metab. 2006;91:2340–8.PubMedCrossRef Modlin IM, Kidd M, Pfragner R, et al. The functional characterization of normal and neoplastic human enterochromaffin cells. J Clin Endocrinol Metab. 2006;91:2340–8.PubMedCrossRef
23.
Zurück zum Zitat Kidd M, Modlin IM, Mane SM, et al. The role of genetic markers—NAP1L1, MAGE-D2, and MTA1—in defining small-intestinal carcinoid neoplasia. Ann Surg Oncol. 2006;13:253–62.PubMedCrossRef Kidd M, Modlin IM, Mane SM, et al. The role of genetic markers—NAP1L1, MAGE-D2, and MTA1—in defining small-intestinal carcinoid neoplasia. Ann Surg Oncol. 2006;13:253–62.PubMedCrossRef
24.
Zurück zum Zitat Kidd M, Eick GN, Modlin IM, et al. Further delineation of the continuous human neoplastic enterochromaffin cell line, KRJ-I, and the inhibitory effects of lanreotide and rapamycin. J Mol Endocrinol. 2007;38:181–92.PubMedCrossRef Kidd M, Eick GN, Modlin IM, et al. Further delineation of the continuous human neoplastic enterochromaffin cell line, KRJ-I, and the inhibitory effects of lanreotide and rapamycin. J Mol Endocrinol. 2007;38:181–92.PubMedCrossRef
25.
Zurück zum Zitat Kidd M, Nadler B, Mane S, et al. GeneChip, geNorm, and gastrointestinal tumors: novel reference genes for real-time PCR. Physiol Genomics. 2007;30:363–70.PubMedCrossRef Kidd M, Nadler B, Mane S, et al. GeneChip, geNorm, and gastrointestinal tumors: novel reference genes for real-time PCR. Physiol Genomics. 2007;30:363–70.PubMedCrossRef
26.
Zurück zum Zitat Stridsberg M, Eriksson B, Oberg K, Janson ET. A comparison between three commercial kits for chromogranin A measurements. J Endocrinol 2003;177:337–41.PubMedCrossRef Stridsberg M, Eriksson B, Oberg K, Janson ET. A comparison between three commercial kits for chromogranin A measurements. J Endocrinol 2003;177:337–41.PubMedCrossRef
27.
Zurück zum Zitat Patterson M, Murphy KG, le Roux CW, et al. Characterization of ghrelin-like immunoreactivity in human plasma. J Clin Endocrinol Metab. 2005;90:2205–11.PubMedCrossRef Patterson M, Murphy KG, le Roux CW, et al. Characterization of ghrelin-like immunoreactivity in human plasma. J Clin Endocrinol Metab. 2005;90:2205–11.PubMedCrossRef
28.
Zurück zum Zitat Jaffa AA, Usinger WR, McHenry MB, et al. Connective tissue growth factor and susceptibility to renal and vascular disease risk in type 1 diabetes. J Clin Endocrinol Metab. 2008. Jaffa AA, Usinger WR, McHenry MB, et al. Connective tissue growth factor and susceptibility to renal and vascular disease risk in type 1 diabetes. J Clin Endocrinol Metab. 2008.
29.
Zurück zum Zitat Partek. Partek® genomics suiteTM. St. Louis: Partek Inc.; 2008. Partek. Partek® genomics suiteTM. St. Louis: Partek Inc.; 2008.
30.
Zurück zum Zitat Mohlig M, Floter A, Spranger J, et al. Predicting impaired glucose metabolism in women with polycystic ovary syndrome by decision tree modelling. Diabetologia. 2006;49:2572–9.PubMedCrossRef Mohlig M, Floter A, Spranger J, et al. Predicting impaired glucose metabolism in women with polycystic ovary syndrome by decision tree modelling. Diabetologia. 2006;49:2572–9.PubMedCrossRef
31.
Zurück zum Zitat Jolliffe IT. Principle component analysis. New York: Springer; 1986. Jolliffe IT. Principle component analysis. New York: Springer; 1986.
32.
Zurück zum Zitat Zhang H, Singer B. Recursive partitioning in the health sciences (statistics for biology and health). New York: Springer; 1999. Zhang H, Singer B. Recursive partitioning in the health sciences (statistics for biology and health). New York: Springer; 1999.
33.
Zurück zum Zitat Sciarra A, Monti S, Gentile V, et al. Chromogranin A expression in familial versus sporadic prostate cancer. Urology. 2005;66:1010–4.PubMedCrossRef Sciarra A, Monti S, Gentile V, et al. Chromogranin A expression in familial versus sporadic prostate cancer. Urology. 2005;66:1010–4.PubMedCrossRef
34.
Zurück zum Zitat Bondioni S, Mantovani G, Polentarutti N, et al. Evaluation of proopiomelanocortin mRNA in the peripheral blood from patients with Cushing’s syndrome of different origin. J Endocrinol Invest. 2007;30:828–32.PubMed Bondioni S, Mantovani G, Polentarutti N, et al. Evaluation of proopiomelanocortin mRNA in the peripheral blood from patients with Cushing’s syndrome of different origin. J Endocrinol Invest. 2007;30:828–32.PubMed
35.
Zurück zum Zitat Fukuda ME, Iwadate Y, Machida T, et al. Cathepsin D is a potential serum marker for poor prognosis in glioma patients. Cancer Res. 2005;65:5190–4.PubMedCrossRef Fukuda ME, Iwadate Y, Machida T, et al. Cathepsin D is a potential serum marker for poor prognosis in glioma patients. Cancer Res. 2005;65:5190–4.PubMedCrossRef
36.
Zurück zum Zitat Cimitan M, Buonadonna A, Cannizzaro R, et al. Somatostatin receptor scintigraphy versus chromogranin A assay in the management of patients with neuroendocrine tumors of different types: clinical role. Ann Oncol. 2003;14:1135–41.PubMedCrossRef Cimitan M, Buonadonna A, Cannizzaro R, et al. Somatostatin receptor scintigraphy versus chromogranin A assay in the management of patients with neuroendocrine tumors of different types: clinical role. Ann Oncol. 2003;14:1135–41.PubMedCrossRef
37.
Zurück zum Zitat Ross AA, Cooper BW, Lazarus HM, et al. Detection and viability of tumor cells in peripheral blood stem cell collections from breast cancer patients using immunocytochemical and clonogenic assay techniques. Blood. 1993;82:2605–10.PubMed Ross AA, Cooper BW, Lazarus HM, et al. Detection and viability of tumor cells in peripheral blood stem cell collections from breast cancer patients using immunocytochemical and clonogenic assay techniques. Blood. 1993;82:2605–10.PubMed
38.
Zurück zum Zitat Shaffer DR, Leversha MA, Danila DC, et al. Circulating tumor cell analysis in patients with progressive castration-resistant prostate cancer. Clin Cancer Res. 2007;13:2023–9.PubMedCrossRef Shaffer DR, Leversha MA, Danila DC, et al. Circulating tumor cell analysis in patients with progressive castration-resistant prostate cancer. Clin Cancer Res. 2007;13:2023–9.PubMedCrossRef
39.
Zurück zum Zitat Pfragner R WG, Niederle B, Behmel A, Rinner I, Mandl A, Wawrina F, et al. Establishment of a continuous cell line from a human carcinoid of the small intestine (KRJ-I): characterization and effects of 5-azacytidine on proliferation. Int J Oncol. 1996;8:513–20. Pfragner R WG, Niederle B, Behmel A, Rinner I, Mandl A, Wawrina F, et al. Establishment of a continuous cell line from a human carcinoid of the small intestine (KRJ-I): characterization and effects of 5-azacytidine on proliferation. Int J Oncol. 1996;8:513–20.
40.
Zurück zum Zitat Syversen U, Ramstad H, Gamme K, et al. Clinical significance of elevated serum chromogranin A levels. Scand J Gastroenterol. 2004;39:969–73.PubMedCrossRef Syversen U, Ramstad H, Gamme K, et al. Clinical significance of elevated serum chromogranin A levels. Scand J Gastroenterol. 2004;39:969–73.PubMedCrossRef
41.
Zurück zum Zitat Ford JK, MacCallum RC, Tait M. The application of exploratory factor analysis in applied psychology: a critical review and analysis. Personnel Psychol. 1986;39:291–314.CrossRef Ford JK, MacCallum RC, Tait M. The application of exploratory factor analysis in applied psychology: a critical review and analysis. Personnel Psychol. 1986;39:291–314.CrossRef
42.
Zurück zum Zitat Domingos P. Occam’s two razors: the sharp and the blunt. In: Agrawal R, Stolorz P (editors) Proceedings of the Fourth International Conference on Knowledge Discovery and Data Mining. New York: AAAI; 1998. Domingos P. Occam’s two razors: the sharp and the blunt. In: Agrawal R, Stolorz P (editors) Proceedings of the Fourth International Conference on Knowledge Discovery and Data Mining. New York: AAAI; 1998.
43.
Zurück zum Zitat Oates T, Jensen D. The Effects of training set size on decision tree complexity. In: Proceedings of the fourteenth international conference on machine learning. Nashville: Morgan Kaufmann; 1997. Oates T, Jensen D. The Effects of training set size on decision tree complexity. In: Proceedings of the fourteenth international conference on machine learning. Nashville: Morgan Kaufmann; 1997.
44.
Zurück zum Zitat Modlin IM, Kidd M, Latich I, et al. Current status of gastrointestinal carcinoids. Gastroenterology. 2005;128:1717–51.PubMedCrossRef Modlin IM, Kidd M, Latich I, et al. Current status of gastrointestinal carcinoids. Gastroenterology. 2005;128:1717–51.PubMedCrossRef
45.
Zurück zum Zitat Borch K, Ahren B, Ahlman H, et al. Gastric carcinoids: biologic behavior and prognosis after differentiated treatment in relation to type. Ann Surg. 2005;242:64–73.PubMedCrossRef Borch K, Ahren B, Ahlman H, et al. Gastric carcinoids: biologic behavior and prognosis after differentiated treatment in relation to type. Ann Surg. 2005;242:64–73.PubMedCrossRef
46.
Zurück zum Zitat Modlin I, Sachs G. Acid related diseases-biology and treatment. Philadelphia: Lippincott Williams and Wilkins; 2004. Modlin I, Sachs G. Acid related diseases-biology and treatment. Philadelphia: Lippincott Williams and Wilkins; 2004.
47.
Zurück zum Zitat Xi L, Nicastri DG, El-Hefnawy T, et al. Optimal markers for real-time quantitative reverse transcription PCR detection of circulating tumor cells from melanoma, breast, colon, esophageal, head and neck, and lung cancers. Clin Chem. 2007;53:1206–15.PubMedCrossRef Xi L, Nicastri DG, El-Hefnawy T, et al. Optimal markers for real-time quantitative reverse transcription PCR detection of circulating tumor cells from melanoma, breast, colon, esophageal, head and neck, and lung cancers. Clin Chem. 2007;53:1206–15.PubMedCrossRef
Metadaten
Titel
Principal Component Analysis, Hierarchical Clustering, and Decision Tree Assessment of Plasma mRNA and Hormone Levels as an Early Detection Strategy for Small Intestinal Neuroendocrine (Carcinoid) Tumors
verfasst von
Irvin M. Modlin, MD, PhD, DSc, FRCS (Eng & Ed)
Björn I. Gustafsson
Ignat Drozdov
Boaz Nadler
Roswitha Pfragner
Mark Kidd
Publikationsdatum
01.02.2009
Verlag
Springer-Verlag
Erschienen in
Annals of Surgical Oncology / Ausgabe 2/2009
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-008-0251-1

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