- Anticancer chemotherapy or immunotherapy during the study or within 5-halflives prior to start of study treatment. Mitomycin C, nitrosoureas or monoclonal antibodies with anticancer activity (e.g. bevacizumab or cetuximab etc.) should not be given within 6 weeks before starting to receive study treatment or within 6 weeks of pre-treatment biopsy for biomarker (p-ERK1/2) studies