GTx, Inc. Reports Second Quarter 2006 Financial Results

MEMPHIS, Tenn., July 27 /PRNewswire-FirstCall/ -- GTx, Inc. , the Men’s Health Biotech Company, today reported financial results for the second quarter of 2006. The net loss for the second quarter and six months ended June 30, 2006 was $10.0 million and $19.9 million, respectively, compared with a net loss of $10.0 million and $19.1 million for the same periods in 2005. At June 30, 2006, GTx had cash and cash equivalents of $55.6 million.

“We are proud of the substantial progress GTx has made in the second quarter,” said Mitchell S. Steiner, M.D., Chief Executive Officer of GTx. “We reached our enrollment goal for our pivotal Phase III PIN clinical trial, we conducted a lipid interim analysis of our pivotal Phase III ADT clinical trial showing that ACAPODENE 80 mg reduced cholesterol and raised HDL, and we initiated and fully enrolled our proof of concept Phase II clinical trial for ostarine, a first in class drug.”

Revenues for the quarter and six months ended June 30, 2006 were $0.6 million and $1.8 million, respectively, as compared to $1.8 million and $2.5 million for the second quarter and first six months of 2005. Revenues in all periods included net sales of FARESTON(R) (toremifene citrate 60 mg), marketed for the treatment of metastatic breast cancer, and collaboration revenue for andarine from our partner, Ortho Biotech Products, LP, a subsidiary of Johnson & Johnson.

Research and development expenses for the second quarter and first six months of 2006 were $8.4 million and $16.9 million, respectively, compared to $8.6 million and $16.0 million for the same periods in 2005. Research and development spending was primarily the result of the Company’s continued investment in its clinical programs.

General and administrative expenses for the quarter and six months ended June 30, 2006 were $2.7 million and $5.6 million, respectively, compared to $2.6 million and $5.2 million for the same periods in 2005.

Second quarter 2006 Corporate Highlights -- In June, GTx conducted a lipid interim analysis of the first 197 men to complete one year of treatment in the pivotal Phase III clinical trial evaluating ACAPODENE for the treatment of multiple side effects of androgen deprivation therapy (ADT). Patients treated with ACAPODENE compared to placebo had statistically significantly lower total cholesterol, LDL, triglycerides, and total cholesterol to HDL ratio, and higher HDL. The full lipid data set will be evaluated before conclusions about clinical significance of the findings can be drawn. Final data from the trial is expected in the fourth quarter of 2007. -- In April, GTx initiated a one year Phase IIIb extension trial of ACAPODENE for the treatment of multiple side effects of ADT. The purpose of this study is to collect additional blinded efficacy and safety data that could further support the current Phase III clinical study. This Phase IIIb clinical study is a separate clinical trial and will not affect the current timeline for the completion of the ongoing Phase III ADT clinical trial in the second half of 2007 nor the potential submission of the New Drug Application. -- In May, GTx attained the enrollment goal of 1,260 men in the pivotal Phase III PIN clinical trial evaluating ACAPODENE 20 mg for the prevention of prostate cancer in men with high grade prostatic intraepithelial neoplasia (PIN). Enrollment of the trial began in the first quarter of 2005. The trial is being conducted under a Special Protocol Assessment with the United States Food and Drug Administration. The trial is designed as a 36 month study but provides for an interim efficacy analysis after a sufficient number of prostate cancer events have occurred. GTx believes this interim analysis will occur during the period from the fourth quarter of 2007 to the first quarter of 2008. If the efficacy endpoint is statistically achieved, GTx plans to file a New Drug Application with the FDA during 2008. -- In May, GTx initiated a proof of concept Phase II clinical trial of ostarine which was fully enrolled July 20. The three month placebo controlled clinical trial is evaluating multiple doses of ostarine in 60 elderly men and 60 postmenopausal women. The trial is designed to evaluate the activity of ostarine on building muscle and promoting bone as well as to assess safety in both elderly men and postmenopausal women. GTx expects to report the data from the Phase II clinical trial in the fourth quarter of 2006. Based on the Phase II clinical data profile of ostarine, GTx will select acute and chronic bone and/or muscle wasting diseases for further development. GTx plans to initiate a Phase IIb or Phase III clinical trial in the first half of 2007. Conference Call

There will be a conference call today at 9 a.m. Eastern Time today to discuss GTx’s second quarter financial results and to provide a company update. To listen to the conference call, please dial:

-- 866-362-4666 from the United States and Canada or -- 617-597-5313 (International) The access code for the call is 12638081.

A playback of the call will be available beginning today at 11:00 a.m., Eastern Time through August 11, and may be accessed by dialing:

-- 888-286-8010 from the United States and Canada or -- 617-801-6888 (International) The reservation number for the replay is 16098503.

Additionally, you may access the live and subsequently archived webcast of the conference call from the Investor Relations section of the company’s website at http://www.gtxinc.com.

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 ACAPODENE(R) (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 is developing ostarine, a selective androgen receptor modulator, or SARM, for muscle wasting and bone loss indications. Ostarine is currently being evaluated in a Phase II clinical trial in 120 elderly men and postmenopausal women. GTx expects to have data from the Phase II ostarine trial in the fourth quarter of 2006. 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 quarterly report on form 10-Q filed with the U.S. Securities and Exchange Commission on May 5, 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.

GTx, Inc. CONDENSED BALANCE SHEETS (in thousands, except share data) June 30, December 31, 2006 2005 (unaudited) ASSETS Current assets: Cash and cash equivalents $55,561 $74,014 Accounts receivable 63 153 Inventory 214 135 Prepaid expenses and other current assets 1,575 1,702 Total current assets 57,413 76,004 Property and equipment, net 1,665 1,746 Purchased intangible assets, net 4,804 4,978 Other assets 39 83 Total assets $63,921 $82,811 LIABILITIES AND STOCKHOLDERS’ EQUITY Current liabilities: Accounts payable $ 990 $1,407 Accrued expenses 4,522 3,230 Deferred revenue - current portion 1,337 1,337 Total current liabilities 6,849 5,974 Deferred revenue, less current portion 2,289 2,958 Other long term liability 338 280 Capital lease obligation 17 20 Commitments and contingencies Stockholders’ equity: Common stock, $0.001 par value: 60,000,000 shares authorized; 31,005,717 shares issued and outstanding at June 30, 2006 and 30,993,967 shares issued and outstanding at December 31, 2005 31 31 Deferred stock compensation - (1,725) Additional paid-in capital 268,574 269,542 Accumulated deficit (214,177) (194,269) Total stockholders’ equity 54,428 73,579 Total liabilities and stockholders’ equity $63,921 $82,811 GTx, Inc. CONDENSED STATEMENTS OF OPERATIONS (in thousands, except share and per share data) (unaudited) Three Months Ended Six Months Ended June 30, June 30, 2006 2005 2006 2005 Revenues: Product sales, net $288 $1,492 $1,164 $1,845 Collaboration revenue 335 335 669 669 Total revenue 623 1,827 1,833 2,514 Costs and expenses: Cost of product sales 170 920 637 1,165 Research and development expenses 8,444 8,639 16,885 15,965 General and administrative expenses 2,692 2,642 5,642 5,162 Total costs and expenses 11,306 12,201 23,164 22,292 Loss from operations (10,683) (10,374) (21,331) (19,778) Interest income 699 354 1,423 678 Net loss $(9,984) $(10,020) $(19,908) $(19,100) Net loss per share: Basic $(0.32) $ (0.41) $(0.64) $(0.77) Diluted $(0.32) $ (0.41) $(0.64) $(0.77) Weighted average shares used in computing net loss per share: Basic 31,002,338 24,664,716 30,999,044 24,664,716 Diluted 31,002,338 24,664,716 30,999,044 24,664,716

GTx, Inc.

CONTACT: McDavid Stilwell, Manager, Corporate Communications & FinancialAnalysis, of GTx, Inc., +1-901-523-9700

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