LONDON and PHILADELPHIA, Dec. 11 /PRNewswire/ -- In a clinical study, women with an aggressive form of breast cancer experienced a median survival of 14 months when treated with an investigational combination of TYKERB® (lapatinib) plus HERCEPTIN® (trastuzumab). The results of the Phase III study in HER2-positive metastatic breast cancer were presented during the 32nd Annual CTRC-AACR San Antonio Breast Cancer Symposium, held in San Antonio, Texas (Dec. 9 – 13).