Navigation Links
Test can reduce recurrence of breast cancer
Date:2/25/2008

A new test that examines large sections of the sentinel lymph node for genes expressed by breast cancer could reduce the risk of recurrence and multiple surgeries, doctors say.

The GeneSearch Breast Lymph Node Assay, manufactured by Veridex, L.L.C., a Johnson & Johnson company, is being used at the Medical College of Georgia to examine half of the tissue in the sentinel lymph node, the first place breast cancer typically spreads. The sample represents more than 10 times the amount of tissue examined in traditional biopsies.

And because the test examines the tissue with molecular tools, it is more sensitive, says Dr. Zixuan (Zoe) Wang, molecular biologist and scientific director of MCGs Georgia Esoteric and Molecular Diagnostic Labs, L.L.C.

When we look at the tissue with the GeneSearch test, we are looking for excessive amounts of mamoglobin and cytokeratin 19, both genes that are expressed more in breast cancer tissue, Dr. Wang says. If those genes are present in excessive amounts, we know the cancer has metastasized.

MCG is the first place in Georgia to offer the test, which Time Magazine named one of the top-10 medical breakthroughs of 2007.

Done during a lumpectomy, the GeneSearch test uses molecular diagnostic methods to examine more tissue than traditional sentinel node biopsies, reducing the chance of false negative results, says Dr. Stephen Peiper, chair of the MCG Department of Pathology and Georgia Cancer Coalition Distinguished Cancer Clinician and Scientist.

The sentinel node, located in the armpit, filters fluid from the breast.

During a traditional sentinel node biopsy, a surgeon would remove a node, then the pathologist would cut that section in half and cut that section to a quarter of the original sample size, Dr. Peiper says. They then would cut wafer-thin slices from those sections, freeze and stain them, and look for cancer cells under a microscope. This technique, called frozen section, would be done during the lumpectomy surgery. If the tissue is positive for cancer cells, the surgeon removes more nodes from the patient, but if it is negative, the surgery is over.

The problem with that type of test, he says, can come when pathologists review more tissue slices during a confirmatory second test, called a permanent section and done a day later.

Permanent section tests are done the day after surgery because the tissue is set with a fixative that causes proteins in cells to harden for better examination.

The cancer cells may not have been present in the part of the node that we looked at the day before in the frozen section, Dr. Peiper says. But on the second day, we may find them in the other section. We perform both the traditional test and the new GeneSearch molecular test in parallel to provide the best care for our patients.

The larger the sample, he says, the better the chance of catching the cancer during the intraoperative test.

If there are small amount s of cancer cells in the whole node, we may or may not see those with the traditional tests, because we only examine a small section of tissue, he says. With this technology, we increase the chance of detecting them.

Nearly 20 percent of women with negative nodes confirmed by a traditional biopsy end up having a recurrence and metastasis, Dr. Peiper says.

There is a higher false-negative rate with traditional sentinel node biopsies, says Dr. Scott Lind, professor and chief of the MCG Section of Surgical Oncology. If that happens, the patient has to come back in for another surgery to take out more lymph nodes that have likely harbored the breast cancer cells.

In clinical trials, the new test correctly identified more than 95 percent of patients whose cancer had spread to their lymph nodes, according to Veridex, L.L.C.

This will help us provide better care to patients and better overall treatment, Dr. Lind says.


'/>"/>

Contact: Jennifer Hilliard
jhilliard@mcg.edu
706-721-8604
Medical College of Georgia
Source:Eurekalert  

Related medicine news :

1. Oracle Healthcare Acquisition Corp. and Precision Therapeutics, Inc. Agree in Principle to Amend Merger Agreement to Reduce Consideration by 15%
2. New Scenic Relaxation Videos Help Reduce Stress, Promote Sense of Calm and Tranquility
3. New Stroke Treatments Reduce Brain Damage, Improve Recovery
4. Columbus Regional Hospital Selects TransUnions Healthcare Revenue Cycle Platform to Improve Its Emergency Departments Registration Process and Reduce Bad Debt
5. Male births are more likely to reduce quality of life and increase severe post-natal depression
6. Local VA Performers Hold February 15 Benefit to Reduce $10,000 in Medical Bills for Former VCU Student Kellie Brown
7. Appropriate timing in the use of breast shields in children can further reduce MDCT radiation dose
8. AGI Dermatics Data Indicates 8 Oxo-Guanine Repair Enzyme OGG1 Encapsulated in Liposomes, Reduces MMP-1, Increases Collagen and Enhances DNA Repair
9. The Medical Home: Building a Framework of Higher Quality, Reduced Cost and Patient-Centric Care
10. Vitamin E or C does not reduce risk of dementia or Alzheimers
11. Independent Review Organizations Poised to Help Reduce Rising Healthcare Cost
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Test can reduce recurrence of breast cancer
(Date:6/25/2017)... ... 2017 , ... FCPX LUT Vintage Volume 2 for Final Cut Pro X ... Volume 2 contains 60 different color-grade presets, giving editors multiple options for adding different ... single out subjects, plus much more. FCPX LUT Vintage Volume 2 is designed for ...
(Date:6/25/2017)... ... June 25, 2017 , ... An increase in wetter weather ... and plants, and along with that; a humdinger of an allergy season. A relief ... means an increase in misery-causing grass and weed pollen. , “Our patients have ...
(Date:6/25/2017)... , ... June 25, 2017 , ... June is Men’s Health Month and ... most common cancer among men in the U.S. and the third most common cause of ... estimated that one man in seven will be diagnosed with prostate cancer during his lifetime. ...
(Date:6/24/2017)... ... June 24, 2017 , ... Dr. ... 217 Portion Road in Lake Ronkonkoma, Dental365 offers patients high-quality and affordable routine ... visits to the dentist fit into their patients’ busy lifestyles. Dental365 also gladly ...
(Date:6/23/2017)... , ... June 23, 2017 , ... ... today announced the launch of Care Management Alerts and Dashboards, an innovative new ... throughout Rhode Island. , RIQI’s Care Management Alerts and Dashboards provide near real-time ...
Breaking Medicine News(10 mins):
(Date:6/8/2017)... 8, 2017  StatLab Medical Products ("StatLab" ... manufacturer of diagnostic supplies for the anatomic ... & Company LP ("Cressey & Company"), a ... growth-focused investment in the Company. Cressey & ... from selling shareholder, Prairie Capital, L.P., with ...
(Date:6/5/2017)... 5, 2017 The Cincinnati ... Pharmacy, Inc. (NYSE: DPLO), has been awarded a Top ... Results are based on an employee survey administered ... and workplace improvement. The survey measures several aspects of workplace ... ...
(Date:6/1/2017)... , June 1, 2017 Nutriceutical Holdings (NH), ... Recommended Solutions (VRS), and KD Pharma Group have decided ... Holdings by KD Pharma Group. KD Pharma Group will ... option to acquire the entire company. "We ... They are committed to growing the NH companies by ...
Breaking Medicine Technology: