<qa>  What is a tumor that expresses at least one member of the erbB- Histologically or cytologically documented diagnosis of progressive or recurrent, locally advanced or metastatic NSCLC; a tumor that expresses at least one member of the erbB family of receptors; failed or relapsed after receiving a platinum-containing regimen as therapy; at least one measurable target lesion as defined by RECIST that has not been irradiated. 