Herceptin questions

[Anabel]

Hello everybody,

first of all, I would like to excuse my english ☺️!
My name is Anabel and I'm from Germany. I was diagnosed with Stage 2b her2 positive/ hr negative breast cancer last year and received neoadjuvant chemotherapy. The final pathological report showed, that the invasive Part of the tumor disappeared, but there was a DCIS left. Now I am still on Herceptin for the rest of one year (18 infusions).
Last week I spoke with my new MO and he would give me the Herceptin for another year. I am not sure, if I should do this.
The HERA Trial showed no benefit 2 vs 1 year... But is this the case for all subgroups?
How would you decide? I am a bist concerned and would be happy, if you had any advices.

Greetings from Germany.
Anabel