Zusammenfassung
Die Entdeckung onkogener C-KIT- und PDGFRA-Mutationen in gastrointestinalen Stromatumoren (GIST) legte die Grundlagen für eine innovative zielgerichtete molekulare Therapie mit den Tyrosinkinaseinhibitoren (TKI) Imatinib (Glivec®), Sunitinib und anderen Substanzen. Dies setzt eine präzise histopathologische Diagnose voraus, ergänzt durch eine Risikostratifizierung zur Abschätzung des malignen Potenzials. Zudem zeigen neuere Erkenntnisse, dass der Nachweis von Mutationen in C-KIT und PDGFRA sowie deren Art und auch die Lokalisation der Mutation innerhalb der Gensequenz von großer Bedeutung für Therapie (Substanzauswahl, Dosisbestimmung, Evaluation sekundärer Resistenz) und Prognose sind. In diesem Artikel wird eine Übersicht über aktuelle Entwicklungen in der histopathologischen und molekularen Diagnostik von GIST und die Relevanz der Mutationsanalyse für die Therapieoptimierung vermittelt.
Abstract
The discovery of activating oncogenic C-KIT and PDGFRA mutations in gastrointestinal stromal tumors (GIST) represented the key for the development of innovative targeted molecular therapy using the tyrosine kinase inhibitors (TKI) Imatinib (Glivec®), Sunitinib and other substances. This makes a precise histopathological diagnosis a major prerequisite, supplemented by appropriate risk stratification for the assessment of the expected biological behavior of individual tumors. Current knowledge demonstrates that the presence of kinase mutations in C-KIT and PDGFRA and their localization within the gene sequence as well as the mutation type are of great importance for planning appropriate treatment (drug selection and dose recommendation), but also for the assessment of prognosis and explanation of secondary resistance to TKI after initial response. This article gives an overview on current developments in the histopathological and molecular diagnostics of GIST and the role of kinase mutation analysis for optimizing patient treatment.
Literatur
Abraham SC, Krasinskas AM, Hofstetter WL et al (2007) Seedling mesenchymal tumors (gastrointestinal stromal tumors and leiomyomas) are common incidental tumors of the esophagogastric region. Am J Surg Pathol 31:1629–1635
Agaimy A, Wünsch PH (2006) Gastrointestinal stromal tumours: a regular origin in the muscularis propria, but an extremely diverse gross presentation. A review of 200 GISTs to critically re-evaluate the concept of so-called extra-gastrointestinal stromal tumours. Langenbecks Arch Surg 391:322–329
Agaimy A, Wünsch PH, Hofstaedter F et al (2007) Minute gastric sclerosing stromal tumors (GIST tumorlets) are common in adults and frequently show c-KIT mutations. Am J Surg Pathol 31:113–120
Agaimy A, Wünsch PH (2009) Lymph node metastasis in gastrointestinal stromal tumours (GIST) occurs preferentially in young patients ≤40 yrs: An overview based on our case material and the literature. Langenbecks Arch Surg 394:375–381
Agaimy A, Terracciano LM, Dirnhofer S, et al (2009) V600E BRAF mutations are alternative early molecular events in a subset of KIT/PDGFRA wild-type gastrointestinal stromal tumors (GISTs). J Clin Pathol 62:613–616
Agaimy A, Märkl B, Arnholdt H et al (2009) Multiple sporadic gastrointestinal stromal tumours arising at different gastrointestinal sites: Pattern of involvement of the muscularis propria as a clue to independent primary GISTs. Virchows Arch 455:101–108
Agaram NP, Wong GC, Guo T et al (2008) Novel V600E BRAF mutations in imatinib-naive and imatinib-resistant gastrointestinal stromal tumors. Genes Chromosomes Cancer 47:853–859
Casali PG, Jost L, Reichardt P et al (2009) Gastrointestinal stromal tumors: ESMO clinical recommendations for diagnosis, treatment and follow-up. Ann Oncol 20 (Suppl 4):64–67
Corless CL, McGreevey L, Haley A et al (2002) KIT mutations are common in incidental gastrointestinal stromal tumors one centimeter or less in size. Am J Pathol 160:1567–1572
Daimaru Y, Kido H, Hashimoto H, Enjoji M (1988) Benign schwannoma of the gastrointestinal tract: a clinicopathologic and immunohistochemical study. Hum Pathol 19:257–264
Fletcher CDM, Berman JJ, Corless C et al (2002) Diagnosis of gastrointestinal stromal tumors: A consensus approach. Hum Pathol 33:459–465
Goettsch WG, Bos SD, Breekveldt-Postma N et al (2005) Incidence of gastrointestinal stromal tumours is underestimated: results of a nation-wide study. Eur J Cancer 41:2868–2872
Golden T, Stout AP (1941) Smooth muscle tumors of the gastrointestinal tract and retroperitoneal tissues. Surg Gynecol Obstet 73:784–810
Heinrich MC, Rubin BP, Longley BJ, Fletcher JA (2002) Biology and genetic aspects of gastrointestinal stromal tumors: KIT activation and cytogenetic alterations. Hum Pathol 33:484–495
Hirota S, Isozaki K, Moriyama Y et al (1998) Gain-of-function mutations of c-kit in human gastrointestinal stromal tumors. Science 279:577–580
Joensuu H, Roberts PJ, Sarlomo-Rikala M et al (2001) Effect of the tyrosine kinase inhibitor STI571 in a patient with a metastatic gastrointestinal stromal tumor. N Engl J Med 344:1052–1056
Kawanowa K, Sakuma Y, Sakurai S et al (2006) High incidence of microscopic gastrointestinal stromal tumors in the stomach. Hum Pathol 37:1527–1535
Kindblom L-G, Remotti HE, Aldenborg F, Meis-Kindblom JM (1998) Gastrointestinal pacemaker cell tumor (GIPACT): Gastrointestinal stromal tumors show phenotypic characteristics of the interstitial cells of Cajal. Am J Pathol 152:1259–1269
Lasota J, Kopczynski J, Sarlomo-Rikala M et al (2003) KIT 1530Ins6 mutation defines a subset of predominantly malignant gastrointestinal stromal tumors of intestinal origin. Hum Pathol 34:1306–1312
Lasota J, Miettinen M (2006) KIT and PDGFRA mutations in gastrointestinal stromal tumors (GISTs). Semin Diagn Pathol 23:91–102
Lee JR, Joshi V, Griffin JW et al (2001). Gastrointestinal autonomic nerve tumor. Immunohistochemical and molecular identity with gastrointestinal stromal tumor. Am J Surg Pathol 25:979–987
Mazur MT, Clark HB (1983) Gastric stromal tumors: reappraisal of histogenesis. Am J Surg Pathol 7:507–519
Medeiros F, Corless CL, Duensing A et al (2004) KIT-negative gastrointestinal stromal tumors. Proof of concept and therapeutic implications. Am J Surg Pathol 28:889–894
Miettinen M, Virolainen M, Sarlomo-Rikala M (1995) Gastrointestinal stromal tumors: value of CD34 antigen in their identification and separation from true leiomyoma and schwannoma. Am J Surg Pathol 19:207–216
Miettinen M, Sobin LH, Lasota J (2005) Gastrointestinal stromal tumors of the stomach: a clinicopathologic, immunohistochemical, and molecular genetic study of 1765 cases with long-term follow-up. Am J Surg Pathol 29:52–68
Miettinen M, Lasota J (2006) Gastrointestinal stromal tumors: pathology and prognosis at different sites. Semin Diagn Pathol 23:70–83
Miettinen M, Wang ZF, Lasota J (2009) DOG1 antibody in the differential diagnosis of gastrointestinal stromal tumors: a study of 1840 cases. Am J Surg Pathol 33:1401–1408
Nilsson B, Bümming P, Meis-Kindblom JM et al (2005) Gastrointestinal stromal tumors: The incidence, prevalence, clinical course, and prognostication in the preimatinib era. A population-based study in Western Sweden. Cancer 103:821–829
Reith JD, Goldblum JR, Lyles RH, Weiss SW (2000) Extragastrointestinal (soft tissue) stromal tumors: An analysis of 48 cases with emphasis on histologic predictors of outcome. Mod Pathol 13:577–585
Sciot R, Debiec-Rychter M (2006) GIST under Imatinib therapy. Semin Diagn Pathol 23:84–90
Stout AP (1962) Bizarre smooth muscle tumors of the stomach. Cancer 25:400–409
Verweij J, Casali PG, Zalcberg J et al (2004) Progression-free survival in gastrointestinal stomal tumours with high-dose imatinib: randomised trial. Lancet 364:1127–1134
Wardelmann E, Hrychyk A, Merkelbach-Bruse S et al (2004) Association of platelet-derived growth factor receptor alpha mutations with gastric primary site and epithelioid or mixed cell morphology in gastrointestinal stromal tumors. J Mol Diagn 6:197–204
Interessenkonflikt
Der korrespondierende Autor weist auf folgende Beziehungen hin: Priv.-Doz. Dr. Agaimy und Prof. Dr. Schneider-Stock erhielten Vortragshonorare von der Firma Novartis.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Agaimy, A., Schneider-Stock, R. Gastrointestinale Stromatumoren. Pathologe 31, 115–122 (2010). https://doi.org/10.1007/s00292-009-1247-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00292-009-1247-8