Hi Mandamoo/Amanda
I was wondering, why not do Abraxane, Carbo, Herceptin & Perjeta combo? TCH is the golden combo for HER2+ BC and Abraxane is part of the taxane family. My onco said he didn't suggest Abraxane as it's expensive compared to Taxol, but Taxol has more side effects.
While a 2nd opinion onco suggested Taxol alone for me, my onco was determined that I do Taxol, Carbo and Herceptin combo to get the maximum benefit in overcoming Herceptin resistance. He said Taxol and Carbo have synergistic effects as does Taxol with Herceptin. Following TCH, the liver met shrank. Of course, I'll never know what did the trick - be it Taxol, Carbo or Herceptin alone or a combination of either/all but I'm just thankful.
Just a thought. Ultimately it's your decision with your oncologist
hope the next treatment will kick those BC cells away!