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Breast Cancer Index(SM) Identifies a subset of Clinically Low Risk Patients Who May Require Longer Therapy

Biotheranostics,Inc.
Posted on: 24 Aug 17
Breast Cancer Index(SM) Identifies a subset of Clinically Low Risk Patients Who May Require Longer Therapy - Reported in Nature Publishing Group's npj Breast Cancer, these data support the individualization of anti-estrogen treatments based on a patient's tumor biology vs. relying only on traditional clinical approaches - Molecular resolution of tumor biology identified 25% of patients classified as low risk patients by clinicopathological factors as being at a much higher genomic risk of late breast cancer recurrence and likely to benefit from extended endocrine therapy - Sub-group analyses of patients classified as high risk by Breast Cancer Index revealed that even smaller tumors harbor higher than expected genomic risk in one of three patients

PR Newswire

SAN DIEGO, Aug. 24, 2017

SAN DIEGO, Aug. 24, 2017 /PRNewswire/ -- A recent publication in npj Breast Cancer reports that Breast Cancer Index (BCI), a genomic test performed by Biotheranostics, Inc., identifies patients with early-stage estrogen receptor-positive (ER+) breast cancer who are low risk by clinicopathological features that are at increased risk for late disease recurrence and are likely to benefit from an extension of endocrine therapy. 

"To date, most treating oncologists agree that lymph node negative patients with T1-sized tumors less than 2 cm (T1N0) are generally regarded as having an overall favorable prognosis, and are often times not recommended for extended endocrine therapy," said Adam M. Brufsky, MD, PhD, Professor of Medicine, University of Pittsburgh Medical Center and co-author of the study.  "However, this new study demonstrated that traditional clinicopathological factors of tumor size and lymph node status may not provide the resolution offered by genomic tools to identify more women at risk of late recurrence and in need of continued therapy. These recent results indicate that Breast Cancer Index can help identify up to 25% of patients in this low clinicopathological risk category as being at a high genomic risk of late recurrence who may likely benefit from extended endocrine therapy." Dr. Brufsky, who is also the medical director of the Women's Cancer Center at Magee-Womens Hospital of UPMC, has served as a paid consultant for Biotheranostics.

A multi-institutional, international group of Investigators conducted analyses of nearly 500 patients from two cohorts with clinical outcome where risk of distant recurrence was assessed specifically in lymph node negative patients with small tumors (T1N0) – features that have traditionally been associated with a low risk of disease relapse. In this study, BCI identified 32% and 36% of T1N0 patients within the two cohorts as high risk of late recurrence despite their small tumors size.  Distant recurrence free survival (DRFS) of T1N0 patients between years 5–15 were significantly stratified by BCI (88% DRFS for BCI High Risk vs. 95% for BCI low risk, P<0.03 and 90% DRFS for BCI High Risk vs. 98% for BCI low risk, p<0.01, respectively).

In these cohorts, ~25% of patients classified as high risk by BCI had the smallest of the tumors evaluated, T1a/b, less than one centimeter. "These analyses further support the growing understanding that tumor biology provides potentially meaningful information to individualizing patient care," added Catherine Schnabel, PhD, Chief Scientific Officer, Biotheranostics, Inc. "The data suggest that adding Breast Cancer Index to traditional clinical and pathological factors to assess prognosis as well as identify patients who may benefit from continued therapy, could be the difference between lasting remission and tumor recurrence for as many as one in every three early stage patients with ER+ tumors."

About Breast Cancer IndexSM
BCI is a molecular, gene expression-based test uniquely positioned to help identify patients best suited for extended endocrine treatment. It is the only validated, commercially available test with data demonstrating prognostic risk of recurrence out to 15 years, as well as prediction of likelihood of benefit from extended endocrine therapy (treatment in years 5-10). The breakthrough test helps oncologists and patients navigate the difficult trade-off between wanting to take steps to prevent recurrence of their disease and facing significant side effects and safety challenges related to extended endocrine therapy. For more information, visit breastcancerindex.com.

About Biotheranostics
Biotheranostics, Inc., is a leader in helping physicians improve the care of cancer patients, offering a suite of proprietary genomics-based molecular diagnostics that provide information to allow physicians to tailor treatment to individual patients. The company's Breast Cancer IndexSM and CancerTYPE ID® tests address a variety of unmet medical needs in the management of cancer patients, and extensive clinical studies have confirmed the accuracy, clinical validity, clinical utility, and cost-effectiveness of the tests. Biotheranostics operates a CLIA-certified, CAP-accredited diagnostic laboratory in San Diego. Learn more at biotheranostics.com.

 

View original content:http://www.prnewswire.com/news-releases/breast-cancer-indexsm-identifies-a-subset-of-clinically-low-risk-patients-who-may-require-longer-therapy-300509047.html

SOURCE Biotheranostics, Inc.

PR Newswire
www.prnewswire.com

Last updated on: 24/08/2017

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