Take a look at your Ki67 marker on your pathology report. It goes from 0 to 100. The closer to 100 you are the faster is this cancer. If you’re below 30 it’s considered moderate growth. Most HER2 however fall in the faster area, but you can have exceptions depending on the subtype. Let us know what you find.
But also know that many women live with mbs her2 for many many years because the treatments are very effective. And in a way, they’re even more effective when you have a higher her2 expression.
December 6, 2025
Is metastatic breast cancer that is HER2-positive and hormone receptor-negative a slow or fast-growing cancer?
HER2-positive breast cancer is considered an aggressive type that grows faster than other breast cancers. This is because the cancer cells make too much of the HER2 protein, which controls cell growth - when it's Show Full Answer
Is metastatic breast cancer that is HER2-positive and hormone receptor-negative a slow or fast-growing cancer?
HER2-positive breast cancer is considered an aggressive type that grows faster than other breast cancers. This is because the cancer cells make too much of the HER2 protein, which controls cell growth - when it's overproduced, cancer cells multiply quickly.
However, there's good news: while HER2-positive cancer is aggressive, modern treatments can block the HER2 protein and stop the cancer from growing. This makes HER2-positive breast cancer much more treatable than it was in the past.
Treatment options for HER2-positive metastatic breast cancer typically include:
- Chemotherapy combined with medications that block HER2
- Targeted therapies like trastuzumab (Herceptin) or pertuzumab (Perjeta)
- Antibody-drug conjugates that deliver chemotherapy directly to cancer cells
- Kinase inhibitors that block growth signals in cancer cells
Even though this type grows faster, the available targeted treatments have greatly improved outcomes. It's important to work closely with your oncology team to find the right treatment plan for your specific situation.
December 6, 2025
Hi TeTo , very interesting . My oncologist told me I can live yrs but im always wonder n in my mind how long ? Thank u for that i need to write that down to ask oncologist that question. Thank u , hope your doing good ...
December 6, 2025