10. Pregnancy or lactation. A negative serum or urine pregnancy test is required for women of child-bearing potential during screening and within 7 - 10 days of Day 1 of Cycle 1 of erlotinib (Tarcevo®)administration. Men and premenopausal women of child bearing potential will follow an approved, medically accepted birth control regimen while taking erlotinib and for 30 days following the last dose of study drug.