Abstract：
BACKGROUND:Despite all benefit provided by established therapies prognosis of gastric cancer remains poor. Targeted inhibition of platelet derived growth factor receptor (PDGFR) by imatinib may influence tumor growth and amplify chemotherapeutic effects. METHODS:This phase I study evaluated dose limiting toxicity (DLT) of imatinib combinated with chemotherapy according to a 3-patient cohort dose-escalating design. Thirty-five patients received cisplatin (60 mg/m(2) d1 q 3w)/ capecitabine (1250 mg/m(2) bid d1-14 q 21) or cisplatin (50 mg/m(2) d1 q 2w)/ 5-fluoruracil (2 g/m(2) d1, q 1w). Imatinib was started d - 4 with dose escalation from 300 to 700 mg QD in 100 mg steps. RESULTS:At imatinib dose level 1 (300mg) one DLT was observed, three more patients were enrolled without further DLT. At dose level 5 (700 mg) two gastric perforations occurred, so 600 mg imatinib emerged as the maximum tolerated dose. Major grade 3/4 toxicities were nausea (6%), anemia (6%) and fatigue (3%). Response evaluation revealed partial response in 27% and stable disease in 43% of the assessable patients. CONCLUSIONS:Combination of imatinib and chemotherapy is well tolerated. Response rates were not superior to those of standard therapy. Further investigations of a larger group of patients are required to confirm the amplification of chemotherapy effects by imatinib. TRIAL REGISTRATION:European Clinical Trials Database: Eudra-CT2006-005792-17 and Clinical Trials Database: NCT00601510.
journal_name
BMC Cancerjournal_title
BMC cancerauthors
Mayr M,Becker K,Schulte N,Belle S,Hofheinz R,Krause A,Schmid RM,Röcken C,Ebert MPdoi
10.1186/1471-2407-12-587subject
Has Abstractpub_date
2012-12-10 00:00:00pages
587issn
1471-2407pii
1471-2407-12-587journal_volume
12pub_type
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