Proton Therapy
for Breast Cancer

Schedule a call with a patient care coordinator

Thank you for your interest in proton therapy. Please take a moment to fill out the form to have a patient care coordinator call you.

Once the form is completed, you will receive a confirmation email. Our team generally returns calls within 48 hours Monday through Friday between 8:00 AM and 4:00 PM. If you would like to speak with a patient care coordinator more quickly, please call us at 1-855-528-7248.

Here is a checklist of items you will need for your initial call with us:
You provide:
  • Demographic information (legal name, etc.)
  • Insurance information
  • Related doctor and facility information
Ask your specialist(s) to provide:
  • Pathology report
    • Positive lymph node involvement?
  • Clinical notes
  • Imaging
  • Records regarding significant past medical history or surgeries:
    • Lumpectomy
    • Mastectomy

Treat the cancer. Protect the heart.

Proton therapy is a precise form of radiation treatment that targets your tumor without delivering harmful excess radiation to the surrounding tissue. This allows your doctor to treat the cancer while helping protect the heart and lungs. Because protecting these vital organs is practically as important as treating your tumor.

Tougher on your tumor. Easier on your body.

While conventional X-ray therapy for breast cancer has helped save lives for decades, the properties of X-rays cause the surrounding healthy tissue to receive a considerable dose of radiation, which can lead to side effects like coronary artery disease, lung scarring, secondary cancers and an increased risk of major coronary events later in life. The cardiotoxicity of some chemotherapy only compounds the risk to the heart. Until recently, patients and the medical community accepted these side effects as a given in order to appropriately treat the cancer.

Now that Proton Therapy is available in the Pacific Northwest, these risks can be mitigated. With proton therapy, treatment is delivered precisely to the tumor, so less radiation is delivered to the surrounding healthy tissue. .

radiation distribution graphic radiation distribution graphic

Proton therapy takes advantage of a unique characteristic of protons—they deliver their maximum dose of radiation, known as the Bragg Peak, right before they come to a stop. That’s how the damage is concentrated on the cancer, protecting healthy tissue.

If you’ve been diagnosed with Breast Cancer, the radiation oncology specialists at SCCA Proton Therapy Center are available to give a second opinion and determine if proton therapy is right for you.

Proton therapy takes advantage of a unique characteristic of protons—they deliver their largest amount of energy right before they come to a stop. That’s how treatment is delivered right to your tumor, and no further.

Proton therapy for breast cancer:
Research by the numbers

~50-60 grays

A standard course of radiotherapy for breast cancer [source]


Increase per gray in the rate of major coronary events due to radiation exposure to heart


Grays: Amount the average patient receives to the heart with traditional radiation


Reduced radiation exposure to the heart


Reduced exposure to the entire body [source]

The PCORI Trial

is currently under way at the SCCA Proton Center to collect more data on the benefits of Proton Therapy over traditional radiation. To find out if you qualify to be a part of it, call for more info at 1-888-992-1182.


Radiation exposure to the heart increases the likelihood of heart complications later in life by 7.4 percent per gray.

Proton therapy reduces the radiation exposure to surrounding tissue and organs.

Pencil-beam scanning allows treatment to conform the size, shape and depth of your breast cancer, “painting” on radiation, accurate within millimeters.

Proton therapy is often the only radiation treatment available if you’ve already received radiation from a previous cancer occurrence.

Treatments are safe, noninvasive and painless for most patients, helping speed recovery and maintain lifestyle.

As of 2017, more than 130,000 people worldwide have received proton therapy at centers in Europe, Asia and the United States.

Think proton therapy might be right for you? Call for more info.


We’re the only provider of proton therapy in our region, and we take that responsibility seriously.

The Seattle Cancer Care Alliance Proton Therapy Center care team is committed to continually improving and raising the standard of care at the Center to provide the best possible treatment with the best possible outcomes.

We’re dedicated to you while you’re here and after you leave. And we’re part of a bigger system including Fred Hutch, Seattle Children’s Hospital, and University of Washington Medicine, so there’s a whole team on your side.