On December 7, 2017 Radius Health, Inc. (Nasdaq:RDUS) reported an update on data from the Phase 1 005 clinical study of elacestrant (RAD1901), an oral selective estrogen receptor degrader (SERD), in patients with estrogen receptor positive (ER+) breast cancer (Press release, Radius, DEC 7, 2017, View Source [SID1234522447]). The data were presented at a Spotlight Presentation (Abstract 1410) during the 2017 San Antonio Breast Cancer Symposium (SABCS). Elacestrant recently received Fast Track designation from the U.S. Food and Drug Administration.
Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:
Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing
Schedule Your 30 min Free Demo!
There are 40 patients that have been treated at the 400 mg dose in the elacestrant Phase I dose escalation and expansion cohorts. All study participants are heavily pretreated ER+, HER2-negative, advanced breast cancer patients that have received a median of three prior lines of systemic therapy and have evaluable advanced or metastatic disease. Of the enrolled patients, 22 patients met the RECIST measurable disease criteria at baseline and there were 6 confirmed partial responses in this group. Elacestrant was well-tolerated with the most common adverse events being low grade nausea, dyspepsia and vomiting.
"It is quite encouraging to see the clinical activity with elacestrant in the heavily pretreated advanced patient population, and further therapeutic development is warranted for patients with hormone receptor positive breast cancer", commented Dr. Aditya Bardia, Director of Precision Medicine and attending physician at Center for Breast Cancer, Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA.
Radius plans to initiate a Phase 2 clinical study of elacestrant monotherapy, a potentially pivotal study, for women with advanced or metastatic ER+/HER2- breast cancer early in 2018.
"Patients cycle through and generally do not repeat treatment regimens, limiting treatment options as their disease advances. We are pleased about the potential to offer patients who have progressed or relapsed during their current standard of care with a new treatment option," said Gary Hattersley, PhD, Chief Scientific Officer. "Radius is committed to developing and to providing breast cancer patients with the next generation of hormonal treatment options, as a single agent and in combination, across all lines of therapy."
An update on data from the elacestrant FES PET 106 Phase I clinical study in the EU was presented yesterday and demonstrated that elacestrant reduces 18F-FES uptake in patients with advanced ER+ breast cancer who progressed on prior endocrine therapy. The reduction in FES uptake supports elacestrant dose selection for further clinical development and was similar in patients harboring mutant or wildtype ESR-1. Three preclinical poster presentations further highlighting and demonstrating elacestrant activity, as a single agent and in combination with other targeted therapies, will be presented tomorrow morning at SABCS.
Following a strategic review, Radius has decided to discontinue further evaluation of elacestrant for vasomotor symptoms and will focus instead on the continued clinical development of the compound as a potential treatment option in breast cancer.
WEBCAST/CONFERENCE CALL
In conjunction with today’s elacestrant Spotlight presentation at SABCS, Radius will host a conference call and live webcast at 8:00 p.m. CT today to discuss the results of the Phase I program as of the cutoff date of October 30, 2017 and provide a company update.
The live webcast titled "Oncology Program Update from San Antonio Breast Cancer Symposium — 2017" will be available at View Source or by visiting the Investors section of Radius’ website at View Source
Conference call information:
Domestic Dial-in Number: (866) 323-7965
International Dial-in Number: (346) 406-0961
Conference ID: 9089206
A replay of the webcast will be available on the company’s website, www.radiuspharm.com in the Investor section under Events and Presentations for 7 days following the live webcast.
About Elacestrant (RAD1901)
Elacestrant is a selective estrogen receptor degrader (SERD), which is being evaluated for potential use as a once daily oral treatment for hormone-receptor positive breast cancer. Elacestrant is currently being investigated for potential use in women with advanced estrogen receptor positive, HER2 negative, breast cancer, the most common form of the disease. Studies completed to date indicate that the compound has the potential for use as a single agent or in combination with other therapies for the treatment of breast cancer.
Additional information on the clinical trial program of elacestrant (RAD1901) is available on www.clinicaltrials.gov.