Here’s what the black breast cancer community doesn’t always hear: our bodies can respond differently to breast cancer treatments than others. These aren’t small differences—they can actually change how our treatment works.
For too long, clinical trials didn’t include enough Black people, so doctors didn’t always know if treatments worked the same for us. That’s finally starting to change, and researchers are uncovering some important differences in how we respond to certain therapies.
This information isn’t meant to scare you! It’s about making sure we have the info we need to have real conversations with our doctors about what’s right for our bodies and our cancer.
Swelling After Treatment (Lymphedema)
If you're having surgery on your lymph nodes or getting radiation,one thing to watch out for is lymphedema—swelling from fluid buildup, usually in the arm on the side where you had treatment. It can be painful, restrict your arm’s movement and impact your daily life.
Research shows black women get lymphedema more often than white women. Within two years of treatment, about 32% of Black women develop it compared to 17% of white women. That's almost double. While the cause may be a greater inflammatory response in Black women, the exact reason for a higher risk of lymphedema is still unknown.
The good news? If you catch it super early, it's reversible. For us in the Black community, it’s important to ask our healthcare team about screening, what warning signs to watch for, and ways to lower our risk.
Hormone Therapy Before Surgery
If your cancer is hormone receptor-positive (fueled by estrogen and/or progesterone), you may get hormone therapy before surgery to block the hormones that help it grow.
Research comparing Black women and white women's treatment responses showed complex results:
Black women were more likely to have tumors shrink dramatically or even disappear with hormone therapy.
They were also more likely to be diagnosed at stage IV.
These differences show us that tumors can behave differently from person to person.
We still need more research to understand why, but the bottom line stays the same: your treatment should always be tailored to you.
Chemotherapy Before Surgery
Triple-negative breast cancer (TNBC), which doesn’t respond to estrogen, progesterone, or HER2, is more common and can be more aggressive in Black women.
Studies show that when Black women with TNBC get chemo before surgery, they're less likely than white women to have all signs of cancer disappear (what doctors call a "pathological complete response").
Researchers are still trying to understand why. It may be the biology of TNBC itself — and it may be barriers we face in the healthcare system, including delayed care or bias that affects how treatment is delivered.
Similar patterns showed up for Black women with HER2-positive breast cancer—their tumors were more likely to resist chemo and survival rates were worse.
This doesn't mean chemo won't work for us. It’s about making sure our care teams are paying attention to our individual responses and making the right moves for our health.
Nerve Damage from Taxane Chemotherapy
Some chemotherapy drugs, including the taxanes docetaxel and paclitaxel, can cause nerve damage that leads to pain, tingling, or numbness, which doctors call neuropathy. A recent study found that Black women are more likely to get neuropathy from paclitaxel than white women. However, when docetaxel was used instead, the risk of nerve damage was lower.
The takeaway? If your treatment plan includes a taxane, it’s worth asking your care team which drug might be the best fit for your body and lifestyle.
Immunotherapy: A Complicated Picture
Immunotherapy is a type of treatment that boosts our immune system so it can recognize and fight cancer cells. One drug you may hear about is Keytruda (pembrolizumab), which is used for triple-negative breast cancer — and more immunotherapy options are being studied.
What researchers are learning is pretty powerful: in some cases, Black women may respond especially well to immunotherapy.
One recent study showed that Black patients with triple-negative breast cancer who received chemo plus Keytruda had more active cancer-fighting immune cells — and were more likely to have their cancer shrink or even disappear.
Another study didn’t see a big difference in overall survival between Black and white patients receiving immunotherapy.
So the picture isn’t totally clear yet — and that tells us our bodies and our cancers aren’t one-size-fits-all and small differences in treatment approaches could matter.
Researchers are finally doing more studies that intentionally include Black patients — like a major one called DiRECT — to better understand how our immune systems respond and what treatment approaches work best for us.
What This Means for You
Your cancer treatment should be personalized to you —your specific cancer, your body, your life. Some people call this precision medicine or personalized medicine. Knowing that our bodies can respond differently to certain treatments gives us power. It means we can have real conversations with our care teams and ask questions like:
Have I had all the tests I need?
Is this the best treatment for me based on what we know?
Are there other options we should consider?
What should we be watching closely as I go through treatment?
Some topics are worth making sure you cover in your appointments:
If you're having lymph node surgery or radiation, ask about lymphedema screening and prevention
If your plan includes chemotherapy with a taxane (like docetaxel or paclitaxel), ask which one makes the most sense for your body.
Make sure you understand how your treatment plan is tailored to your specific situation
Think about joining a clinical trial. Joining a clinical trial isn’t just about access to cutting-edge treatment — it’s also about helping researchers learn how treatments work for people like us. The more diverse voices in trials, the better care future patients will get. If you’re interested, ask your care team if a trial could be right for you and how to get involved safely.