Healthcare Industry News:  osteoporosis 

Biopharmaceuticals

 News Release - April 21, 2006

GTx, Inc. Announces Initiation of Phase IIIb Extension Trial of Acapodene for the Treatment of Side Effects of Androgen Deprivation Therapy

MEMPHIS, Tenn., April 21 (HSMN NewsFeed) -- GTx, Inc. (Nasdaq: GTXI ), the Men's Health Biotech Company, today announced it is initiating a separate Phase IIIb clinical trial as an extension of the pivotal Phase III ADT clinical trial of ACAPODENEŽ (toremifene citrate) in an 80mg dose for the treatment of multiple serious side effects of androgen deprivation therapy.

Prostate cancer patients in the pivotal Phase III ADT trial who have completed the full two year treatment will be eligible to participate in the Phase IIIb extension trial for an additional year. The purpose of this study is to collect additional efficacy and safety data that could further support the current Phase III clinical study. This additional Phase IIIb clinical study is considered to be a separate clinical trial and will not affect the current timeline for the completion of the ongoing Phase III clinical trial in the second half of 2007 and the potential submission of the new drug application.

"This new clinical trial is a unique opportunity to continue to follow in a blinded fashion ADT patients completing our two year pivotal Phase III study. It will allow us not only to obtain additional data regarding fractures and safety, but also to evaluate other possible benefits of ACAPODENE in this population," said Mitchell S. Steiner, M.D., CEO of GTx.

Approximately 1,400 men have been enrolled into the pivotal Phase III clinical trial evaluating ACAPODENE for the treatment of side effects of androgen deprivation therapy for advanced prostate cancer. GTx completed enrollment of the trial in the fall of 2005. The primary endpoint of the trial, which is being conducted under a Special Protocol Assessment with the United States Food & Drug Administration, is a reduction in vertebral fractures. Secondary endpoints include improvements in bone mineral density and cholesterol levels, a reduction in hot flashes, and the treatment of gynecomastia. In December 2005, GTx conducted an interim analysis of bone mineral density in the first 200 men to complete one full year of treatment. The interim analysis demonstrated a highly statistically significant positive change in bone mineral density in patients treated with ACAPODENE versus patients on placebo.

About GTx

GTx, headquartered in Memphis, Tenn., is a biopharmaceutical company dedicated to the discovery, development and commercialization of therapeutics for cancer and serious conditions related to men's health. GTx's lead drug discovery and development programs are focused on small molecules that selectively modulate the effects of estrogens and androgens, two essential classes of hormones. GTx is developing ACAPODENEŽ (toremifene citrate), a selective estrogen receptor modulator, or SERM, in two separate clinical programs in men: first, a pivotal Phase III clinical trial for the treatment of serious side effects of androgen deprivation therapy for advanced prostate cancer, and second, a pivotal Phase III clinical trial for the prevention of prostate cancer in high risk men with high grade PIN. GTx also is developing ostarine, a selective androgen receptor modulator, or SARM, for a variety of indications including muscle wasting and bone loss in frail elderly patients, osteoporosis, muscle wasting in end stage renal disease patients, and severe burn wounds and associated muscle wasting. GTx has licensed to Ortho Biotech Products, L.P., a subsidiary of Johnson & Johnson, another of its SARMs, andarine, under a joint collaboration and license agreement.

Forward-Looking Information is Subject to Risk and Uncertainty

This press release contains forward-looking statements based upon GTx's current expectations. Forward-looking statements involve risks and uncertainties. GTx's actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, the risks that (i) GTx will not be able to commercialize its product candidates if clinical trials do not demonstrate safety and efficacy in humans; (ii) GTx may not able to obtain required regulatory approvals to commercialize its product candidates; (iii) GTx's clinical trials may not be completed on schedule, or at all, or may otherwise be suspended or terminated; and (iv) GTx could utilize its available cash resources sooner than it currently expects and may be unable to raise capital when needed, which would force GTx to delay, reduce or eliminate its product development programs or commercialization efforts. You should not place undue reliance on these forward-looking statements, which apply only as of the date of this press release. GTx's annual report on form 10-K filed with the U.S. Securities and Exchange Commission on March 2, 2006, contains a more comprehensive description of these and other risks to which GTx is subject. GTx expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in its expectations with regard thereto or any change in events, conditions or circumstances on which any such statements are based.


Source: GTx

Issuer of this News Release is solely responsible for its content.
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