PREVIOUS QUESTION:

 

NEXT QUESTION:

 

What causes HER2-positive breast cancer?

ANSWER

Doctors don’t know the exact causes of breast cancer. Experts think it may be a combination of things, including your genes, environment, and lifestyle. You can't inherit a bad copy of the HER2 gene from a parent, and you won’t pass it on to your children.

SOURCES:

UpToDate.

Breastcancer.org: "HER2 Status," "How Triple-Negative Breast Cancer Behaves and Looks,” “Inform HER2 Dual ISH Test,”  “SPoTLight HER2 CISH Test.”

Lab Tests Online: "HER-2/neu."

American Cancer Society: "How is breast cancer diagnosed?" "Treatment of invasive breast cancer, by stage,” “Understanding Your Pathology Report: Breast Cancer,” "Signs and Symptoms of Breast Cancer."

Ithimakin, S. Cancer Research, April 1, 2013.

Reviewed by Laura J. Martin on December 21, 2020

SOURCES:

UpToDate.

Breastcancer.org: "HER2 Status," "How Triple-Negative Breast Cancer Behaves and Looks,” “Inform HER2 Dual ISH Test,”  “SPoTLight HER2 CISH Test.”

Lab Tests Online: "HER-2/neu."

American Cancer Society: "How is breast cancer diagnosed?" "Treatment of invasive breast cancer, by stage,” “Understanding Your Pathology Report: Breast Cancer,” "Signs and Symptoms of Breast Cancer."

Ithimakin, S. Cancer Research, April 1, 2013.

Reviewed by Laura J. Martin on December 21, 2020

NEXT QUESTION:

What are the warning signs of HER2-positive breast cancer?

WAS THIS ANSWER HELPFUL

"ALEXA, ASK WEBMD"

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.

    Other Answers On: