Jump to content

Picoplatin Trial Demonstrates Survival Benefit in SCLC


Recommended Posts

SOUTH SAN FRANCISCO, Calif., Sept. 4 /PRNewswire-FirstCall/ -- Poniard Pharmaceuticals, Inc. , a biopharmaceutical company focused on oncology, today announced that updated results of its Phase 2 clinical trial of picoplatin confirm and extend the previously announced interim data analysis, which demonstrated a survival benefit in patients with recurrent small cell lung cancer (SCLC) who have relapsed within six months of first-line therapy. The company also for the first time announced the median one-year survival rate of 17.6 percent in the Phase 2 population of mostly platinum-refractory and -resistant patients studied in this trial. Picoplatin, the Company's lead product candidate, is currently being evaluated in the pivotal Phase 3 SPEAR (Study of Picoplatin Efficacy After Relapse) trial in SCLC, which is being conducted under a Special Protocol Assessment (SPA) agreement with the U.S. Food and Drug Administration (FDA). The SPEAR trial is being conducted in platinum-refractory, -resistant, and -sensitive SCLC patients who have failed or relapsed from initial therapy within six months of initial treatment and is comparing picoplatin treatment with best supportive care to best supportive care alone. The median overall survival is approximately 17 to 22 weeks for patients with recurrent SCLC who are treated with existing second-line chemotherapies, according to the 2007 National Comprehensive Cancer Network practice guidelines.

"These updated Phase 2 data are consistent with earlier studies of picoplatin in this difficult-to-treat patient population and compare favorably with the median survival for the entire population of relapsed patients who receive other second-line chemotherapy," said Jerry McMahon, Ph.D., chairman and CEO of Poniard. "These results are promising because patients with platinum-resistant and -refractory small cell lung cancer have very limited treatment options. They typically experience rapid disease progression and low overall survival following treatment with existing chemotherapies, which have significant toxicities."

The updated picoplatin Phase 2 data were presented during a poster discussion session at the International Association for the Study of Lung Cancer's (IASLC) 12th World Conference on Lung Cancer in Seoul, Korea.

Additional Phase 2 Study Findings

In addition to the overall and one-year survival findings, the updated analysis of results from the open-label, multi-center Phase 2 trial showed that the disease control rate was 48.1 percent in the 77 evaluable patients. This is similar to that observed with currently available treatments, but with a more manageable side effect profile and less frequent administration. At the time of the updated analysis, 63 patients had died from disease progression. The most common side effects were hematologic and included thrombocytopenia, anemia and neutropenia. No grade 3 or 4 neurotoxicity or nephrotoxicity and no treatment-related deaths occurred.

Pivotal Phase 3 SPEAR Trial Design

Poniard's ongoing international, multi-center, randomized, controlled SPEAR trial is comparing picoplatin plus best supportive care to best supportive care alone to evaluate the efficacy of picoplatin after relapse. Best supportive care includes care and treatment to optimize the comfort of patients and their ability to function, as well as to minimize the side effects of palliative cancer treatments. The primary efficacy endpoint is overall survival, with overall response rates, progression-free survival and disease control also being evaluated. The trial, which is enrolling patients who are refractory to, or who have progressed within six months of completing, treatment with first-line platinum chemotherapy (cisplatin or carboplatin), is being conducted at clinical sites in Europe and India.

"Since the initiation of the SPEAR trial in the second quarter of 2007, we have made significant progress in opening approximately 100 clinical sites and in treating patients," said David A. Karlin, M.D., senior vice president, clinical development and regulatory affairs for Poniard. "We anticipate reaching our enrollment target in the first half of 2008, potentially supporting a New Drug Application filing in 2009."

About Picoplatin

Picoplatin is a new generation platinum chemotherapy agent. It was designed to overcome platinum resistance and to prolong the time to relapse after chemotherapy in the treatment of solid tumors, and to have an improved safety profile compared with existing platinum-based chemotherapeutics. Poniard received orphan drug designation from the FDA in November 2005 for picoplatin for the treatment of SCLC.

In addition to the ongoing SPEAR trial, Poniard is also evaluating intravenous picoplatin in an ongoing Phase 1 clinical trial as a first-line treatment for metastatic colorectal cancer and in an ongoing Phase 2 trial in combination with docetaxel (Taxotere®) and prednisone in patients with metastatic hormone-refractory prostate cancer.

About Small Cell Lung Cancer

SCLC is the most aggressive and deadly form of lung cancer and accounts for approximately 20 percent of all lung cancer cases. The current two-year survival rate for patients with extensive SCLC is less than 10 percent with current management options. The estimated incidence of lung cancer in the United States in 2006 was 174,500, according to the National Cancer Institute. The estimated incidence in Europe in 2006 was 386,300, according to the International Agency for Research on Cancer.

SCLC is currently treated with platinum therapies, but many patients do not respond, and if they do respond, they typically relapse within a short time after treatment. There is currently no FDA-approved therapy and no consistent and effective therapy for SCLC patients who have platinum-resistant or -refractory disease after treatment failure with first-line combination therapy with either cisplatin or carboplatin. No new drugs have been approved by the FDA for the treatment of platinum-resistant or -refractory SCLC in nearly a decade.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.