Senesco Announces Results of Cohort 3 in SNS01-T Phase 1b/2a Trial

Mon Dec 9, 2013 12:00pm GMT

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Senesco Announces Results of Cohort 3 in SNS01-T Phase 1b/2a Trial

More Robust Effects Observed

Senesco Technologies, Inc. (“Senesco” or the “Company”) (OTCQB:SNTI) reported results of cohort 3 in its Phase 1b/2a clinical study of SNS01-T at the 55th American Society of Hematology Annual Meeting in New Orleans.

Four heavily pre-treated, relapsed or refractory patients, two with diffuse large B-cell lymphoma (DLBCL) and two with multiple myeloma, who were enrolled in cohort 3 at a dosage of 0.2 mg/Kg, completed treatment. Three of the four patients were evaluable for safety. One patient had a dose reduction to 0.05 mg/kg due to pre-existing thrombocytopenia and was not evaluable for safety. No dose-limiting toxicities have been observed in any of the first three cohorts. As previously reported, based upon review of three patients treated at 0.2 mg/kg the Data Review Committee recommended dose escalation to the 4th dose level (0.375 mg/kg) and continued enrollment.

“In addition to the absence of dose-limiting toxicity, since all patients in cohort 3 completed the full protocol-specified 6-week treatment period, we appear to be seeing longer treatment durations and fewer dropouts compared to cohorts 1 and 2,” stated Alice S. Bexon, M.D., Vice President of Clinical Development. The most frequent adverse events are manageable infusion reactions, which decrease with repeated treatments and platelet count decreases, which recover over time. One myeloma patient had reductions in disease-related proteins in his blood and a second patient with DLBCL had evidence of tumor shrinkage in some lesions.”

Like the previous treatment group, all four patients included at this dose level were refractory to, or had relapsed on, a significant number of previous treatments. Upon treatment with SNS01-T, three of the four patients exhibited stable disease at week 3 and two of the four were stable at week 6, the end of treatment.

“The safety profile continues to be a positive feature of SNS01-T in this study,” stated Leslie J. Browne, Ph.D., President and Chief Executive Officer of Senesco. “Since our preclinical data in myeloma and lymphoma demonstrated significant tumor shrinkage at 0.375 mg/kg of SNS01-T, with a p-value of <0.01, we will be looking for evidence of clinical activity at this dose level in cohort 4.”

The study is an open-label, multiple-dose, dose-escalation study to evaluate the safety and tolerability of SNS01-T when administered by intravenous infusion to approximately 15 relapsed or refractory multiple myeloma and B-cell lymphoma patients. While the primary objective is to evaluate safety and tolerability, the effect of SNS01-T on tumor response and time to relapse or progression is assessed using multiple well-established metrics including measurement of monoclonal protein in multiple myeloma and CT imaging in B-cell lymphomas.

In the study patients are dosed twice-weekly by intravenous infusion for six weeks followed by an observation period. The first and second cohorts of patients received 0.0125 mg/kg and 0.05 mg/kg per dose, respectively. The third cohort received 0.2 mg/kg and the planned dose level for cohort 4 is 0.375 mg/kg, which is 30 fold higher than the starting dose in group 1. It is expected that the study will enroll six to nine patients to complete cohort 4.

About SNS01-T

SNS01-T is a novel, gene regulatory approach to cancer therapy that is designed to selectively trigger apoptosis in B-cell cancers such as multiple myeloma, and, mantle cell and diffuse large B-cell lymphomas. Senesco is the sponsor of the Phase 1b/2a study that is actively enrolling patients at Mayo Clinic in Rochester, MN, the University of Arkansas for Medical Sciences in Little Rock, the Mary Babb Randolph Cancer Center in Morgantown, WV, the John Theurer Cancer Center at Hackensack University Medical Center in Hackensack, NJ and the Seattle Cancer Care Alliance in Seattle, WA.

About Senesco Technologies, Inc.

Senesco Technologies is a clinical-stage biotech company specializing in cancer therapeutics. Its proprietary gene regulation technology has demonstrated the ability to kill cancer cells and protect healthy cells from premature death in disease models. The Company is currently in a Phase 1b/2a trial with a product candidate that is designed to treat B-cell cancers, which include multiple myeloma, chronic lymphocytic leukemia, and non-Hodgkin’s B-cell lymphomas. Trial sites include Mayo Clinic and the Fred Hutchinson Cancer Research Center in Seattle. The technology was developed over the last 15 years through the discovery that the genetic pathway for cell growth control is common to both plants and humans. For more information, please visit or connect with us on Facebook, Twitter, LinkedIn and Google+.

Forward-Looking Statements

Certain statements included in this press release are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Actual results could differ materially from such statements expressed or implied herein as a result of a variety of factors, including, but not limited to: the Company’s ability to continue as a going concern; the Company’s ability to recruit patients for its clinical trial; the ability of the Company to consummate additional financings; the development of the Company’s gene technology; the approval of the Company’s patent applications; the current uncertainty in the patent landscape surrounding small inhibitory RNA and the Company’s ability to successfully defend its intellectual property or obtain the necessary licenses at a cost acceptable to the Company, if at all; the successful implementation of the Company’s research and development programs and collaborations; the success of the Company's license agreements; the acceptance by the market of the Company’s products; the timing and success of the Company’s preliminary studies, preclinical research and clinical trials; competition and the timing of projects and trends in future operating performance, the quotation of the Company’s common stock on an over-the-counter securities market, as well as other factors expressed from time to time in the Company’s periodic filings with the Securities and Exchange Commission (the "SEC"). As a result, this press release should be read in conjunction with the Company’s periodic filings with the SEC. The forward-looking statements contained herein are made only as of the date of this press release, and the Company undertakes no obligation to publicly update such forward-looking statements to reflect subsequent events or circumstances.

RedChip Companies, Inc.
Dave Gentry
1-800-RED-CHIP (733-2447), ext. 104
Senesco Technologies, Inc.
Joel Brooks
Chief Financial Officer
Heather Branham