The short answer
Hormone receptor status describes whether cancer cells have receptors for estrogen (ER) or progesterone (PR). It is common in breast cancer reports. Receptor-positive cancers may respond to hormone therapy, which is why the result helps guide treatment planning.
Hormone receptor status shows whether cancer cells have receptors for estrogen or progesterone.
It is written as ER (estrogen receptor) and PR (progesterone receptor), positive or negative.
Receptor-positive cancers may respond to hormone therapy.
The result helps guide treatment, not describe how far cancer has spread.
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The full explanation.
The short version
On many breast cancer pathology reports you will see hormone receptor status, usually written as ER and PR. These describe whether the cancer cells carry receptors for the hormones estrogen (ER) and progesterone (PR). The answer helps guide treatment.
What the receptors do
Some cancer cells have proteins on their surface that act like docking points for hormones. When estrogen or progesterone binds to these receptors, it can act as a signal that helps the cancer grow. A cancer with these receptors is called hormone receptor positive; one without them is hormone receptor negative.
Your report lists ER and PR separately, each as positive or negative, and sometimes as the percentage of cells carrying the receptor.
Why status guides treatment
The reason this test matters is that it opens or closes a specific door:
- Receptor positive. The cancer may respond to hormone therapy, which works by lowering hormone levels or blocking the receptors so the hormone signal cannot get through. This is generally seen as a favorable feature because it adds a treatment option.
- Receptor negative. The cancer is less likely to respond to hormone therapy, so the plan usually focuses on other approaches. Negative does not mean untreatable — it points the plan in a different direction.
One piece of a larger picture
Hormone receptor status describes the biology of the cancer cells, not how far the cancer has spread. Care teams combine it with other features — such as HER2 status, grade, and stage — to build a treatment plan. No single result decides everything.
What to ask
Ask your care team what your ER and PR status is, whether it makes hormone therapy an option, and how it fits with your other results such as HER2 status. Their reading of your full report is what applies to you.
Words to know
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Common questions
▸What does hormone receptor positive mean?
It means the cancer cells have receptors for estrogen, progesterone, or both. These cancers can be fueled by those hormones, and they may respond to hormone therapy that lowers hormone levels or blocks the receptors. Your care team explains what this means for your treatment.
▸Is hormone receptor positive good or bad?
Receptor-positive status is generally considered favorable because it opens the door to hormone therapy as a treatment option. But status is only one factor among several, and your care team weighs the whole picture.
▸What does ER and PR mean on my report?
ER stands for estrogen receptor and PR for progesterone receptor. Your report lists each as positive or negative, and sometimes as a percentage of cells that carry the receptor. Together they describe the hormone receptor status.
▸Does hormone receptor negative mean fewer options?
Receptor-negative cancers are less likely to respond to hormone therapy, so treatment usually focuses on other approaches. Being negative does not mean untreatable — it points the plan in a different direction. Your care team can explain the options.
Questions to ask your doctor
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Your next step
Plain-language definitions for the words on your report.
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