How long does 18 infusions of herceptin (trastuzumab) cover you for breast cancer grade 3 her+3 stage 1?

life-long: Herceptin (trastuzumab) is a targeted therapy used to treat her-2 positive breast cancers. It is usually given together with 4 or 6 cycles of chemotherapy, then continued every 3 weeks for a full year. The treatment reduces the likelihood of a recurrent cancer, with the hope that the effect will be life-long.

Hopefully forever: In the us, the studies of Herceptin (trastuzumab) looked at a full year of treatment for patients with curable breast cancer. Herceptin (trastuzumab) is given every three weeks for 17 doses. But why a year? It was chosen at random. In finland, a similar study gave only 9 weeks of herceptin (trastuzumab)... And patients did just as well! so, after a year (or less) you are considered cured. You don't need more!