In this large prospective trial, molecular tumor profiling predicted a tissue of origin in most patients with CUP. The median survival time of 12.5 months for patients who received assay-directed site-specific therapy compares favorably with previous results using empiric CUP regimens. Patients with CUP predicted to have more responsive tumor types had longer survival compared with patients with less responsive tumor types. Molecular tumor profiling contributes to the management of patients with CUP and should be a part of their standard evaluation.
The addition of erlotinib to bevacizumab significantly improved PFS but not OS. Although generally well tolerated, the modest impact on survival and increased toxicity associated with the addition of erlotinib to bevacizumab maintenance mean that this two-drug maintenance regimen will not lead to a new postchemotherapy standard of care.
: The addition of bevacizumab and erlotinib to first-line combined modality therapy was feasible in a community-based setting, producing toxicity comparable to other effective combined modality regimens for head and neck cancer. The high level of efficacy suggests that incorporation of these targeted agents into first-line therapy should be further explored.
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