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- W2031939751 abstract "Single agent epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI) have demonstrated reproducible response rates of 5–15% in treatment of squamous cell carcinomas of the head and neck (SCCHN). The subset of patients that benefits most from these agents remains unknown. We reviewed individual patient data from five clinical trials of erlotinib, lapatinib, or gefitinib to determine if there are clinical characteristics that are associated with clinical benefit defined as complete response (CR), partial response (PR), and stable disease (SD) >4 months. Secondary endpoints included progression-free survival (PFS) and overall survival (OS). Three-hundred and nineteen subjects were included. Observed responses were: 1% CR, 6% PR, 24% SD >4 months, 18% SD <4 months, 45% progressive disease (PD), 7% not evaluable (NE). The median OS was 6.4 months and the median PFS was 2.7 months. The most common toxicities observed were rash (grade 1 in 37%, grade 2 in 33%, grade 3+ in 6%) and diarrhea (grade 1 in 30%, grade 2 in 10%, grade 3+ in 5%). Performance status (PS) (p = 0.04), older age (p = 0.02), and development of rash (p < 0.01), diarrhea (p = 0.03), or oral side effects (p = 0.02) were independently associated with clinical benefit. Older age, better PS, and development of rash were associated with longer PFS and OS. Clinical parameters that appear to predict response to EGFR TKI include PS and age. EGFR mechanistic toxicities that develop during therapy are also highly associated with benefit and suggest a relationship between drug exposure and outcome." @default.
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- W2031939751 date "2009-10-01" @default.
- W2031939751 modified "2023-10-14" @default.
- W2031939751 title "Factors associated with clinical benefit from epidermal growth factor receptor inhibitors in recurrent and metastatic squamous cell carcinoma of the head and neck" @default.
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- W2031939751 doi "https://doi.org/10.1016/j.oraloncology.2009.05.637" @default.
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