On May 10, 2016 GTx, Inc. (Nasdaq: GTXI) reported financial results for the first quarter ended March 31, 2016, and highlighted recent accomplishments and upcoming milestones (Press release, GTx, MAY 10, 2016, View Source;p=RssLanding&cat=news&id=2166792 [SID:1234512174]). The Company is currently enrolling patients in three clinical trials: two trials evaluating enobosarm as a potential treatment for women with advanced breast cancer and another assessing enobosarm as a potential treatment for stress urinary incontinence in postmenopausal women.
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"During the first quarter, we executed on several ongoing initiatives that we expect will make 2016 a year of considerable progress," said Dr. Robert J. Wills, Executive Chairman of GTx. "We have continued to make progress in the enrollment of our two advanced breast cancer clinical trials of enobosarm, with preliminary data from the first stage of each study expected by the end of 2016. Also, we are excited to be collaborating with doctors on a clinical trial that is the first clinical study to use a SARM to treat stress urinary incontinence in postmenopausal women and expect data from this study late in 2016."
Corporate Highlights and Anticipated Milestones
Enobosarm in Breast Cancer: The Company’s lead product candidate, a selective androgen receptor modulator (SARM), is being developed as a targeted treatment for two advanced breast cancer indications: (i) estrogen receptor positive (ER+) and androgen receptor positive (AR+) breast cancer, and (ii) AR+ triple negative breast cancer (TNBC). For both clinical trials, the primary efficacy endpoint will be clinical benefit, which is defined as a complete response, partial response or stable disease.
ER+/AR+ breast cancer: We currently expect to complete enrollment in the first stage of the open-label, Phase 2 clinical trial of enobosarm in women with metastatic or locally advanced ER+/AR+ breast cancer in the second quarter of 2016, to allow us to determine during the fourth quarter of this year whether there is sufficient safety and efficacy data to warrant proceeding with the second stage of the clinical study. While the first stage of the trial will evaluate 18 patients for each of the two dosing arms, 9 mg and 18 mg of enobosarm, the trial is designed to enroll up to 118 patients to obtain data from 44 evaluable patients in each study arm (a total of 88 evaluable patients) to assess the primary efficacy objective of clinical benefit response following 24 weeks of treatment.
AR+ TNBC: We currently expect to complete enrollment in the first stage of the open-label, proof-of-concept Phase 2 clinical trial of 18 mg of enobosarm in women with advanced AR+ TNBC in the third quarter of 2016, to allow us to determine by the end of 2016 whether there is sufficient safety and efficacy data to warrant proceeding with the second stage of the clinical study. While the first stage will include 21 evaluable patients, the trial is designed to enroll up to 55 patients in total in order to obtain data from 41 evaluable patients to assess the primary efficacy objective of clinical benefit response following 16 weeks of treatment.
SARMs in Non-Oncologic Indications: The Company is exploring SARMs as potential treatments for both stress urinary incontinence (SUI) and Duchenne muscular dystrophy (DMD), a rare disease characterized by progressive muscle degeneration and weakness.
SUI: We are currently enrolling patients in a Phase 2 proof-of-concept clinical trial of 3 mg of enobosarm to treat up to 35 postmenopausal women with SUI, the first clinical trial to evaluate a SARM for SUI. Top-line data from the Phase 2 clinical trial is anticipated by the end of 2016.
DMD: The Company’s preclinical studies have continued to confirm beneficial effects from SARMs in mice genetically altered to simulate DMD, compared to control groups. The Company continues to advance its preclinical initiatives while pursuing a strategic collaboration with potential biopharma partners experienced in orphan drug development.
SARDs in Prostate Cancer: Our Selective Androgen Receptor Degrader (SARD) technology is being evaluated as a potentially novel treatment for men with castration-resistant prostate cancer (CRPC), including those who do not respond or are resistant to currently approved therapies. The Company believes that its SARD compounds will degrade multiple forms of the androgen receptor, including AR splice variants, such as AR-V7.
CRPC: Several lead SARD compounds are currently being evaluated in preclinical studies to select the best SARD compounds for continued development, as well as to develop data necessary to initiate first in human clinical trials in 2017.
First Quarter 2016 Financial Results
As of March 31, 2016, cash and short-term investments were $24.3 million compared to $29.3 million at December 31, 2015.
Research and development expenses for the quarter ended March 31, 2016 were $4.0 million compared to $2.9 million for the same period of 2015.
General and administrative expenses were $2.1 million for both the quarter ended March 31, 2016 and March 31, 2015.
The Company recognized a non-cash gain of $8.2 million and $2.6 million for the quarter ended March 31, 2016 and 2015, respectively, due to the change in fair value of the Company’s warrant liability. During the first quarter of 2016, the Company recorded a non-cash reclassification of this warrant liability to stockholders’ equity due to the modification of these warrants. No adjustments to the fair value of these warrants will be made in the future.
Net income for the quarter ended March 31, 2016 was $2.1 million compared to a net loss of $2.4 million for the same period in 2015. Net income for the quarter ended March 31, 2016 included the non-cash gain of $8.2 million related the revaluation of our warrant liability. The net loss for the quarter ended March 31, 2015 included a non-cash gain of $2.6 million related to the change in the fair value of the Company’s warrant liability.
GTx had approximately 141.7 million shares of common stock outstanding as of March 31, 2016. Additionally, there remain warrants outstanding to purchase approximately 64.3 million shares of GTx common stock at an exercise price of $0.85 per share.