title: [At last, an effective therapy for non-differentiated GI sarcomas (gastro intestinal stromal tumor)].
abstract: Gastrointestinal stromal tumors (GISTs) are non differentiated sarcoma of the gastrointestinal tract and have for a long time been confused with well differentiated tumors and classified as leiomyosarcoma. These tumors are characterized immunohistochemically by CD 117 staining. This marker represents the expression of c-kit which is a receptor for growth factor with enzymatic activity (tyrosine kinase). Recent studies have found that an inhibitor of specific tyrosine kinase is effective in the treatment of GIST with an estimated response rate of more than 60%. This new drug could significantly improve the prognosis of these aggressive chemoresistant tumors.
authors.affiliation: Département de médecine, Institut Curie, Paris, France.
authors.forename: G
authors.initials: G
authors.lastname: Des Guetz
authors.forename: Ph
authors.initials: P
authors.lastname: De Mestier
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Pierga
mesh_terms: D000328:Adult; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D001549:Benzamides; D003937:Diagnosis, Differential; D019008:Drug Resistance, Neoplasm; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis / Q000188:drug therapy* / Q000235:genetics / Q000601:surgery; D006801:Humans; D000068877:Imatinib Mesylate; D007150:Immunohistochemistry; D007890:Leiomyosarcoma / Q000175:diagnosis; D008875:Middle Aged; D009154:Mutation; D010879:Piperazines / Q000008:administration & dosage / Q000627:therapeutic use*; D011379:Prognosis; D011505:Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors*; D019009:Proto-Oncogene Proteins c-kit / Q000235:genetics; D011743:Pyrimidines / Q000008:administration & dosage / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic; D012509:Sarcoma / Q000175:diagnosis / Q000188:drug therapy* / Q000235:genetics / Q000601:surgery; D013270:Stomach / Q000473:pathology; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000188:drug therapy / Q000235:genetics / Q000473:pathology / Q000601:surgery; D013997:Time Factors
chemical_list: D000970:Antineoplastic Agents; D001549:Benzamides; D010879:Piperazines; D011743:Pyrimidines; D000068877:Imatinib Mesylate; D011505:Protein-Tyrosine Kinases; D019009:Proto-Oncogene Proteins c-kit