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首页> 外文期刊>Journal of Clinical Oncology >Selective Oral Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor ZD1839 Is Generally Well-Tolerated and Has Activity in Non-Small-Cell Lung Cancer and Other Solid Tumors: Results of a Phase I Trial.
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Selective Oral Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor ZD1839 Is Generally Well-Tolerated and Has Activity in Non-Small-Cell Lung Cancer and Other Solid Tumors: Results of a Phase I Trial.

机译:选择性口服表皮生长因子受体酪氨酸激酶抑制剂ZD1839通常耐受性良好,并且在非小细胞肺癌和其他实体瘤中具有活性:I期试验的结果。

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摘要

PURPOSE: To investigate safety, tolerability, dose-related pharmacologic properties, and pharmacodynamics of ZD1839 (gefinitib, Iressa; AstraZeneca Pharmacueticals, Wilmington, DE), an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, in patients with solid tumor types known to express or highly express EGFR. METHODS: This was an open-label, phase I, dose escalation safety/tolerability trial of oral ZD1839 (150 to 1,000 mg/d), administered once daily for 28-continuous-day cycles until disease progression or undue toxicity. RESULTS: Of 71 (69 assessable for safety; 58 for efficacy) patients at seven dose levels, most had non-small-cell lung (n = 39) or head and neck (n = 18) cancer, and 68 of 71 patients received prior cancer therapy (two or more regimens in 54 patients [78%]). Diarrhea and rash, the primary dose-limiting toxicities (DLTs), occurred at 800 mg. Frequent treatment-related grade 1/2 adverse events were diarrhea (55%), asthenia (44%), and acne-like follicular rash (46%). At doses >/= 800 mg, 45% of patients required dose reductions. No increased or cumulative toxicity was observed over 250 patient-months of exposure. Pharmacokinetic analysis showed that steady-state occurred by day 7, interpatient exposure was more variable than intrapatient exposure, and variability of exposure did not change with dose. One patient experienced a partial response, but antitumor activity manifested mainly as prolonged stable disease (45% of patients >/= 3 months, 22% >/= 6 months, and 7.2% >/= 1 year). No relationship between dose, response, or duration on study was observed. CONCLUSION: Rash and diarrhea, generally mild and tolerable at doses
机译:目的:研究表皮生长因子受体(EGFR)酪氨酸激酶抑制剂ZD1839(表皮生长因子受体(EGFR)酪氨酸激酶抑制剂)的安全性,耐受性,剂量相关的药理特性和药效学表达或高度表达EGFR。方法:这是一项口服ZD1839(150至1,000 mg / d)的开放式I期,剂量递增安全性/耐受性试验,每天给药一次,连续28天,直到疾病进展或出现不适当的毒性。结果:在七个剂量水平的71位患者(69位可评估安全性; 58位有效性)中,大多数患有非小细胞肺癌(n = 39)或头颈部癌(n = 18),在71位患者中有68位接受了治疗先前的癌症治疗(54例患者中的两种或更多种方案[78%])。腹泻和皮疹是主要的剂量限制性毒性(DLT),剂量为800 mg。与治疗相关的常见1/2级不良反应为腹泻(55%),乏力(44%)和痤疮样滤泡性皮疹(46%)。在> / = 800 mg的剂量下,需要降低剂量的患者占45%。暴露250个月以上,未观察到毒性增加或累积。药代动力学分析表明,患者入院的第7天要比入院的患者稳定得多,而且入院的变异性不会随剂量的变化而变化。一名患者经历了部分缓解,但抗肿瘤活性主要表现为疾病持续时间延长(45%≥3个月,22%≥6个月和7.2%≥1年)。没有观察到剂量,反应或研究持续时间之间的关系。结论:皮疹和腹泻是轻度且可耐受的,剂量为600 mg / d时为DLT,最大剂量为800 mg / d。在所有剂量下均观察到抗肿瘤活性。药代动力学分析证实了每日一次口服给药的适用性。

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