Non-small Cell Lung Cancer Clinical Trial
Official title:
First-Line Erlotinib Therapy and the Subsequent Development of Mechanisms of Secondary Resistance in Patients With Non-Small Cell Lung Cancer and Known Sensitizing EGFR Mutations
Erlotinib is a drug which targets non small cell lung cancer with a genetic change (mutation) in the epidermal growth factor receptor (EGFR). This drug has been used in other cancer research studies and information from those studies suggests that Erlotinib can control the growth of these cancer cells.
PRIMARY OBJECTIVE
-To prospectively assess the frequency of different genetic mechanisms of secondary
resistance in patients' tumors during treatment with erlotinib (e.g., T790M mutations, MET
amplification).
- Correlate these genetic changes with patient demographic data and clinical outcomes
(time to progression, survival, sites of recurrence/progression).
- Search for novel mechanisms of acquired resistance to erlotinib.
- Identify whether these genetic changes are present at low levels in initial pretreatment
tumor specimens.
SECONDARY OBJECTIVE(S)
1. To measure the steady-state plasma concentrations of erlotinib during the course of
patients' treatment.
- Determine if the development and/or resolution of skin toxicity is related to
plasma erlotinib concentrations.
- Determine if the development of disease progression while on erlotinib is
correlated with declines in plasma erlotinib concentrations.
- Assess the plasma levels in patients whose smoking status has been biochemically
verified to determine if smoking is associated with lower erlotinib plasma
concentration.
2. To analyze from both free plasma DNA and DNA from circulating tumor cells of
erlotinib-treated patients for the original sensitizing EGFR mutations and genetic
changes associated with secondary resistance.
3. To measure clinical outcomes in patients with known sensitizing mutations in their tumor
EGFR when treated with first-line erlotinib.
- Response rate
- Time to progression
- Median overall survival
;
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