PMID- 12409327 OWN - NLM STAT- MEDLINE DCOM- 20021119 LR - 20220316 IS - 0732-183X (Print) IS - 0732-183X (Linking) VI - 20 IP - 21 DP - 2002 Nov 1 TI - Phase I safety, pharmacokinetic, and pharmacodynamic trial of ZD1839, a selective oral epidermal growth factor receptor tyrosine kinase inhibitor, in patients with five selected solid tumor types. PG - 4292-302 AB - PURPOSE: To establish the safety and tolerability of ZD1839 (Iressa), a selective epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, and to explore its pharmacokinetic and pharmacodynamic effects in patients with selected solid tumor types. PATIENTS AND METHODS: This was a phase I dose-escalating trial of oral ZD1839 150 mg/d to a maximum of 1,000 mg/d given once daily for at least 28 days. Patients with either advanced non-small-cell lung, ovarian, head and neck, prostate, or colorectal cancer were recruited. RESULTS: Eighty-eight patients received ZD1839 (150 to 1,000 mg/d). At 1,000 mg/d, five of 12 patients experienced dose-limiting toxicity (grade 3 diarrhea [four patients] and grade 3 somnolence [one patient]). The most frequent drug-related adverse events (AEs) were acne-like rash (64%) and diarrhea (47%), which were generally mild (grade 1/2) and reversible on cessation of treatment. No change in ZD1839 safety profile was observed with prolonged administration. Pharmacokinetic analysis showed steady-state exposure to ZD1839 in 98% of patients by day 7. Nineteen patients had stable disease and received ZD1839 for >or= 3 months; seven of these patients remained on study drug for >or= 6 months. Serial skin biopsies taken before treatment and at approximately day 28 revealed changes indicative of inhibition of the EGFR signaling pathway. CONCLUSION: ZD1839 was generally well tolerated, with manageable and reversible AEs at doses up to 600 mg/d and dose-limiting toxicity observed at 1,000 mg/d. ZD1839 treatment resulted in clinically meaningful disease stabilization across a range of tumor types and doses. Pharmacodynamic changes in skin confirmed inhibition of EGFR signaling, which was predicted from the mode of action of ZD1839. FAU - Baselga, J AU - Baselga J AD - Vall d'Hebron University Hospital, Barcelona, Spain. baselga@hg.vhebron.es FAU - Rischin, D AU - Rischin D FAU - Ranson, M AU - Ranson M FAU - Calvert, H AU - Calvert H FAU - Raymond, E AU - Raymond E FAU - Kieback, D G AU - Kieback DG FAU - Kaye, S B AU - Kaye SB FAU - Gianni, L AU - Gianni L FAU - Harris, A AU - Harris A FAU - Bjork, T AU - Bjork T FAU - Averbuch, S D AU - Averbuch SD FAU - Feyereislova, A AU - Feyereislova A FAU - Swaisland, H AU - Swaisland H FAU - Rojo, F AU - Rojo F FAU - Albanell, J AU - Albanell J LA - eng PT - Clinical Trial PT - Clinical Trial, Phase I PT - Journal Article PL - United States TA - J Clin Oncol JT - Journal of clinical oncology : official journal of the American Society of Clinical Oncology JID - 8309333 RN - 0 (Antineoplastic Agents) RN - 0 (Quinazolines) RN - S65743JHBS (Gefitinib) SB - IM CIN - J Clin Oncol. 2002 Nov 1;20(21):4276-8. PMID: 12409324 MH - Administration, Oral MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Agents/*adverse effects/pharmacokinetics/pharmacology MH - Biopsy MH - Carcinoma, Non-Small-Cell Lung/*drug therapy/pathology MH - Colorectal Neoplasms/*drug therapy/pathology MH - Diarrhea/chemically induced MH - Disease Progression MH - Dose-Response Relationship, Drug MH - Female MH - Gefitinib MH - Head and Neck Neoplasms/*drug therapy/pathology MH - Humans MH - Lung Neoplasms/*drug therapy/pathology MH - Male MH - Middle Aged MH - Ovarian Neoplasms/*drug therapy/pathology MH - Prostatic Neoplasms/*drug therapy/pathology MH - Quinazolines/*adverse effects/pharmacokinetics/pharmacology MH - Skin/pathology MH - Treatment Outcome EDAT- 2002/11/01 04:00 MHDA- 2002/11/26 04:00 CRDT- 2002/11/01 04:00 PHST- 2002/11/01 04:00 [pubmed] PHST- 2002/11/26 04:00 [medline] PHST- 2002/11/01 04:00 [entrez] AID - 10.1200/JCO.2002.03.100 [doi] PST - ppublish SO - J Clin Oncol. 2002 Nov 1;20(21):4292-302. doi: 10.1200/JCO.2002.03.100.