Herceptin After Chemotherapy: Understanding Potential Benefits & Eligibility

Question
Would herceptin be of any benefit to someone who was diag. stage 3 and finished chemo 2 years ago.  In light of the new studies on herceptin, oncs are calling back patients to receive herceptin but there doesn't seem to be any consistency as to who gets called back.  If herceptin would benefit someone one year out of chemo why not someone two years out.  What is so magical about the one year mark?

Answer
Sorry I know far too little about your case - almost nothing and I would need to know next to everything - to be able to answer your question. Because of this and the importance of your question and of its reply being correct I must ask you to
give this question to your own oncologist!