RXi Pharmaceuticals Corporation (NASDAQ: RXII), a biotechnology company focused on discovering, developing and commercializing innovative therapies addressing major unmet medical needs using targeted biotherapeutics, announced updated data from its Phase 2 clinical trial of NeuVax™ at the American Society of Clinical Oncology (ASCO) annual meeting. RXi is developing NeuVax for the adjuvant treatment of low to intermediate HER2 expressing breast cancer.
The NeuVax Phase 2 trials enrolled 182 patients, including node positive and node negative, HER2 1+, 2+ and 3+ patients. All patients received standard of care (SoC) therapy and were confirmed to be disease-free prior to enrollment. Following enrollment, eligible patients were administered the NeuVax vaccine once a month for six months, followed by booster shots one every 6 months thereafter. The efficacy endpoint for the trial was disease free survival (DFS), the same endpoint in the FDA approved SPA (Special Protocol Assessment) for the Phase 3 PRESENT ( Prevention of Recurrence in Early- Stage, Node-Positive Breast Cancer with Low to Intermediate HER2 Expression with NeuVax™ Treatment) study.
“These encouraging clinical results underscore the potential for cancer immunotherapy to develop into potent and well tolerated targeted therapies,” stated Dr. Beth Mittendorf, Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, who was also named the primary investigator for the Phase 3 trial. “The results of this trial suggest that NeuVax addresses an unmet medical need and clearly warrants a randomized, multicenter Phase 3 study to confirm efficacy and safety in a larger population.”
Key highlights from the Phase 2 trial include:
- Statistically significant increase in disease free survival (DFS) at 36 months in the NeuVax treated group vs the control group for the planned Phase 3 patient population (p=0.035). The vaccine treated group showed no recurrences of cancer (0% recurrence rate), while the control group demonstrated a 22% recurrence rate which is consistent with historical norms. The planned Phase 3 patient population as defined in the FDA approved Special Protocol Assessment (SPA) includes breast cancer patients who are node positive, have low to intermediate HER2 expression (HER2 1+ and 2+ by IHC), are HLA A2+ & A3+ and who are disease free following standard of care therapy.
- An excellent safety profile, with no serious adverse events (SAE’s) related to drug reported to date. All adverse events (AE’s) reported were minor and resolved within 24 hours.
- In the ITT (intent to treat) population who received all ranges of doses and schedules, the low to intermediate HER2 expressers continued to show significant activity in improvement of DFS (p=0.045), with the vaccine group demonstrating a reduction of 66% in relative risk for recurrence. This data demonstrates strong support for targeting of low to intermediate HER2 expressers, a group for which there is currently no HER2 directed therapies.
- The optimally dosed (1 milligram of E75 plus 250 micrograms of GM-CSF) group continues to demonstrate superior efficacy compared to sub-optimal doses (varying doses from 100 - 500 micrograms E75 plus 125 – 500 micrograms GM-CSF), with a recurrence rate of 3% for the optimally dosed group vs 12% for the sub-optimally dosed group and 14% for the control group.
Select the service that is right for you!COMPARE ALL SERVICES
Jim Cramer and Stephanie Link actively manage a real portfolio and reveal their money management tactics while giving advanced notice before every trade.
- $2.5+ million portfolio
- Large-cap and dividend focus
- Intraday trade alerts from Cramer
- Weekly roundups
Access the tool that DOMINATES the Russell 2000 and the S&P 500.
- Buy, hold, or sell recommendations for over 4,300 stocks
- Unlimited research reports on your favorite stocks
- A custom stock screener
- Upgrade/downgrade alerts
Jim Cramer's protege, David Peltier, identifies the best of breed dividend stocks that will pay a reliable AND significant income stream.
- Diversified model portfolio of dividend stocks
- Alerts when market news affect the portfolio
- Bi-weekly updates with exact steps to take - BUY, HOLD, SELL
All of Real Money, plus 15 more of Wall Street's sharpest minds delivering actionable trading ideas, a comprehensive look at the market, and fundamental and technical analysis.
- Real Money + Doug Kass Plus 15 more Wall Street Pros
- Intraday commentary & news
- Ultra-actionable trading ideas
Our options trading pros provide daily market commentary and over 100 monthly option trading ideas and strategies to help you become a well-seasoned trader.
- 100+ monthly options trading ideas
- Actionable options commentary & news
- Real-time trading community
- Options TV