Hi, Sorry for my English but as the knowledge of this medicin is more advanced in the United States, I prefer ask my question here. My friend has a secundary breast cancer ( now it went to her liver ) and my question is, if Tykerb is so bad for the liver how come that her doctor prescribed Tykerb ? Any answer to what are her chances ? Many thanks. Martine ## Tykerb is for solid tumours such as breast cancer. During development it was known as a small molecule. Patients who meet specific indication criteria may be prescribed Tykerb as part of combination therapy for breast cancer. Pharmacologically, lapatinib is a dual tyrosine kinase inhibitor that interrupts cancer-causing cellular signals. I am unable to determine your friends reaction or positive treatment to the drug, due to the fac...