SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Biotech / Medical : Biotech Short Candidates -- Ignore unavailable to you. Want to Upgrade?


To: tom pope who wrote (589)10/20/2003 10:17:32 AM
From: tuck  Read Replies (1) | Respond to of 897
 
>>SEATTLE, Oct. 20 /PRNewswire-FirstCall/ -- Following a planned safety analysis by an independent Data Monitoring Committee of its three pivotal trials for XYOTAX(TM) in non-small cell (NSC) lung cancer, Cell Therapeutics, Inc. (CTI) (Nasdaq: CTIC - News) is implementing a study amendment to reduce the dose of XYOTAX(TM) from 235mg/m2 to 175mg/m2 in its STELLAR 4 trial. This change was based on a small percentage of patients in the study who appeared to develop early (first- or second-cycle) neutropenic-related toxicities, which may be prevented by the administration of a lower dose (175mg/m2) of XYOTAX(TM). The 175mg/m2 dose was well tolerated in prior phase II studies in more than 135 patients, including PS2 ("high risk") NSC lung cancer patients. All patients currently enrolled on STELLAR 4 will continue their treatment at the lower dose of 175mg/m2, while the comparator arm dosages will continue according to the protocol at their approved marketed dose. Targeted completion of study enrollment for STELLAR 4 remains unchanged for the end of the first quarter, 2004.
"It is common in survival studies to dose at the maximum tolerated dose, which was determined to be 235 mg/m2 in phase I trials," stated Jack W. Singer, M.D., Research Program Chair of CTI. "In the context of a large international study involving sites with varying abilities to closely monitor patients, we believe, given the data reviewed, that the lower 175mg/m2 dose will likely be more uniformly tolerated than the comparator arm."

The recommendation will not impact the ongoing STELLAR 3 trial, which is scheduled to complete its enrollment this quarter, or the STELLAR 2 trial timeline, nor will it affect the integrity or utility of these pivotal studies for registration. The single-agent dose of 175mg/m2 of XYOTAX(TM) will be standardized across all PS2 patients.

"Given the rapid rate of enrollment in this trial, one should applaud the Company for providing such close surveillance of these potentially frail PS2 patients and for their responsiveness to the Data Monitoring Committee requests such that they are able to amend the study expeditiously before it had progressed beyond a point where intervention would not be possible without jeopardizing the integrity of the study," noted Corey Langer, M.D., Co-Director of Thoracic Oncology, Fox Chase Cancer Center, Principal Investigator on the STELLAR 3 trial, and member of the XYOTAX(TM) Phase III Study Steering Committee. "We look forward to the completion and analysis of all three trials as these studies are addressing important questions in a previously neglected patient population."

Management Conference Call Scheduled

On Monday, October 20, 2003, at 8:30 a.m. Eastern/5:30 a.m. Pacific time, members of CTI's management and clinical team will host a conference call to discuss the STELLAR clinical trials and the impact of these changes. Dr. Langer will also participate in the conference call.

The conference call will be accessible by teleconference and audio webcast on the CTI website at www.cticseattle.com. The audio webcast will be archived for post listening two hours after the conference call ends.

The teleconference call-in number for U.S. participants is 800-946-0785 and for international participants is 719-457-2661.

The replay numbers for the teleconference are 888-203-1112 for U.S. participants and 1-719-457-0820 for international participants.

The entry code for callers is 650361.

About PS2 NSC Lung Cancer

PS2 patients represent a "high risk" subgroup of patients who are ambulatory and capable of self-care, but are unable to carry out any work activities, although they are up and about more than 50 percent of waking hours. PS2 NSC lung cancer patients account for approximately 25% of all patients with NSC lung cancer who require chemotherapy. Current treatments for this group of patients are poorly tolerated, with most tolerating a median of two doses of chemotherapy and experiencing disease progression in an average of six weeks. Current treatments also have limited effectiveness, with median survival ranging from only ten weeks for single-agent treatment to just over 17 weeks for combination therapies. Prior studies of XYOTAX(TM) 175mg/m2 have demonstrated the drug was well tolerated with 50 percent of patients receiving four or more doses of therapy and 30 percent receiving six or more treatment cycles. Only one patient developed grade 4 neutropenia. Median survival among PS2 patients treated with 175mg/m2 of XYOTAX(TM) was approximately 22 weeks.

About STELLAR Clinical Trials

STELLAR 2 is a phase III clinical trial of XYOTAX(TM) versus docetaxel for the second-line treatment of NSC lung cancer patients.

STELLAR 3 is a phase III clinical trial of carboplatin in combination with either XYOTAX(TM) or paclitaxel in the front-line treatment of poor performance status (PS2) patients with NSC lung cancer.

STELLAR 4 is a phase III clinical trial of XYOTAX(TM) versus either gemcitabine or vinorelbine in the front-line treatment of poor performance status (PS2) patients with NSC lung cancer.

About XYOTAX(TM)

XYOTAX(TM) is an investigational pharmaceutical that links paclitaxel, the active ingredient in Taxol®, to a biodegradable polyglutamate polymer. This polymer technology results in a new chemical entity, designed to selectively deliver higher and potentially more effective levels of active chemotherapeutics to tumors. Blood vessels in tumor tissue, unlike blood vessels in normal tissue, are porous to molecules like polyglutamate. Based on preclinical studies, it appears that XYOTAX(TM) is preferentially trapped in the tumor blood vessels allowing significantly more of the dose of chemotherapy to localize in the tumor. Because more of the chemotherapy is targeted to the tumor and the levels of chemotherapy delivered to normal tissue are reduced, XYOTAX(TM) may be potentially more effective and have less severe side effects than currently available chemotherapeutics.<<

snip

Cheers, Tuck



To: tom pope who wrote (589)11/28/2003 12:17:19 PM
From: tuck  Read Replies (1) | Respond to of 897
 
Gen-Probe has been testing its all time highs after this news:

>>SAN DIEGO and QUEBEC CITY, Canada, Nov. 20 /PRNewswire-FirstCall/ -- Gen-Probe (Nasdaq: GPRO - News) and DiagnoCure (Toronto: CUR - News) announced today that they have signed a license and collaboration agreement under which they will develop, and Gen-Probe will market, an innovative urine test to detect a new, highly specific genetic marker for prostate cancer.

The diagnostic test will detect a recently described gene called PCA3(DD3) that has been shown by studies to date to be over-expressed only in malignant prostate tissue. The test may offer advantages over prostate specific antigen (PSA) testing, the current standard for initial prostate cancer screening in conjunction with a digital rectal exam.

Under the terms of the agreement, Gen-Probe will pay DiagnoCure an upfront US $3 million fee, and future fees and contract development payments of up to US $7.5 million over the next three years. Gen-Probe will receive exclusive worldwide rights to diagnostic products resulting from the agreement, and will pay DiagnoCure royalties of 8% on cumulative net product sales of up to $50 million, and royalties of 16% on cumulative net sales above $50 million.

"The completion of this license agreement represents a major milestone in our planned and communicated strategy," said Pierre Desy, president and CEO of DiagnoCure. "We expect this test to detect the PCA3(DD3) gene in urine to be the first gene-based, adjunctive screen for this devastating disease. Gen-Probe is the ideal partner to bring this important new test to the market. Their leadership in nucleic acid testing (NAT), their proprietary APTIMA® technologies, and their strong desire to become a leader in gene-based testing in oncology are the fundamentals that will realize and optimize all the potential of this marker."

"Broadening our core NAT technologies into cancer testing is an important part of Gen-Probe's growth strategy, and this agreement with DiagnoCure is an excellent fit with both our proprietary technology and our business goals," said Henry L. Nordhoff, chairman, president and CEO of Gen-Probe. "We expect this collaboration to accelerate our entry into cancer screening, as well as provide another clinically important addition to the menu of tests that will be run on our innovative, fully automated TIGRIS(TM) instrumentation system."

The PCA3(DD3) gene was discovered by Dr. Marion Bussemakers while working with Dr. Jack Schalken at the University of Nijmegen in the Netherlands and in the laboratory of Dr. William Isaacs at Johns Hopkins in Baltimore. PCA3(DD3) is the most prostate-cancer specific gene described to date. DiagnoCure has developed a first-generation version of a PCA3(DD3) test that is offered in the United States as an analyte specific reagent.

DiagnoCure has evaluated its first-generation test (called uPM3(TM)) in a clinical study of 443 men. In the study, the test had a positive predictive value of 75% (75% of patients with positive test results were found to have cancer by biopsy), and a negative predictive value of 84% (84% of patients with negative test results were found to be cancer-free by biopsy) in men having a PSA level of 2.5 ng/ml or higher. These results, which are significantly more accurate than those achievable with PSA screening, have been presented at several international urology meetings and were recently submitted for publication.

In addition, a recent article by Dr. Schalken's group in the journal European Urology (44, 2003, 8-16) reported on a European clinical trial in 108 men with PSA levels of 3.0 ng/ml or higher. The study demonstrated that if a PCA3(DD3) test were negative for prostate cancer, there would be a 90% chance that a subsequent biopsy would be negative.

In recent years, the scientific community increasingly has questioned the accuracy of PSA screening, which was introduced 17 years ago and has significant limitations.

First, because the antigen is specific for prostate tissue, not prostate cancer, an elevated PSA does not always indicate prostate cancer. Only 25% of patients found to be positive (>4.0 ng/ml) by PSA screening will be confirmed by a biopsy to have cancer. As a result, urologists must decide whether to conduct another biopsy or additional PSA tests in pursuit of an adequate diagnosis, or to delay follow-up, potentially allowing an undiagnosed tumor to grow unchecked. Furthermore, many prostate cancer experts now advocate an even lower PSA threshold for biopsy in an effort to detect more cancers. This lower threshold, however, would significantly increase the number of expensive and uncomfortable biopsies, many of which would be negative.

Second, because not all prostate cancers release high levels of antigen into the blood, routine PSA screening often fails to detect clinically significant cancers. These "false negative" results can lead to delayed detection, which reduces the chance that treatment will be effective once the diagnosis has been made.

According to the American Cancer Society, prostate cancer is the most prevalent cancer in men, with more than 220,000 new cases and nearly 30,000 deaths in the United States in 2003. It is estimated that more than 40 million PSA tests are performed worldwide each year, and the market is expected to grow significantly in the future as the population ages.

About Gen-Probe

Gen-Probe Incorporated, founded in 1983, is a global leader in the development, manufacture and marketing of rapid, accurate and cost-effective nucleic acid testing products used for the clinical diagnosis of human diseases and for screening donated human blood. Using its patented NAT technology, Gen-Probe has received FDA approvals or clearances for more than 60 products that detect a wide variety of infectious microorganisms, including those causing sexually transmitted diseases, tuberculosis, strep throat, pneumonia and fungal infections. Additionally, the Company developed and manufactures the only FDA-approved blood screening assay for the simultaneous detection of HIV-1 and HCV, which is marketed by Chiron Corporation. Gen-Probe and Bayer Corporation have formed a collaboration to develop, manufacture and market nucleic acid diagnostic tests for certain viral organisms, and under the agreement Bayer has the right to distribute these tests, including the recently approved VERSANT® HCV Qualitative Assay. Gen-Probe has 20 years of nucleic acid detection research and product development experience, and its products are used daily in clinical laboratories and blood collection centers throughout the world. Gen-Probe is headquartered in San Diego, California and has approximately 700 employees. Additional information about the Company can be found on the Internet at www.gen-probe.com. <<

snip

Wondering how much good news is left.

Cheers, Tuck