Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Breast Cancer Health Center

Font Size

3 Breast Cancer Gene Tests 'Promising'

Breast Cancer Gene Tests Help Check Recurrence Risk and Treatment Options
WebMD Health News
Reviewed by Louise Chang, MD

Feb. 4, 2008 -- Three breast cancer gene tests may provide insights on recurrence risk and chemotherapy treatment.

So say Johns Hopkins University's Luigi Marchionni, MD, PhD, and colleagues.

They reviewed data on three breast cancer gene tests that are already on the market -- Oncotype DX, MammaPrint, and H/I -- which check activity of various breast cancer-related genes.

Oncotype DX screens 21 genes, MammaPrint screens 70 genes, and H/I screens two genes. The tests aren't marketed for all women; they're geared to breast cancer patients.

The bottom line: The tests provide information, but it's not yet clear how to put that information in context or into practice.

"Although these tests show great promise to improve predictions of prognosis and treatment benefit for early-stage breast cancer, more needs to be learned about the extent of that improvement, in whom they affect, and how they are best incorporated into decision-making about current breast cancer treatment," Marchionni's team writes.

The review appears online today in the Annals of Internal Medicine.

Today on WebMD

Breast Cancer Overview
From self-exams and biopsies to reconstruction, we’ve got you covered.
Dealing with breast cancer
Get answers to your questions.
woman having mammogram
Experts don’t agree on all fronts, but you can be your own advocate.
woman undergoing breast cancer test
Many women worry. But the truth? Most abnormalities aren’t breast cancer.
Breast Cancer Treatments Improving
Resolved To Quit Smoking
Woman getting mammogram
Screening Tests for Women
ovarian cancer overview slideshow
serious woman
what is your cancer risk
10 Ways to Revitalize Slideshow