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BioInvent, Oncurious NV and NMTRC initiating Phase I/IIa study with TB-403 for the treatment of Medulloblastoma

On May 2, 2016 BioInvent International (BINV) reported it has initiated a Phase I/IIa study that will evaluate the safety and tolerability, and explore the preliminary efficacy, of TB-403 for the treatment of relapsed or refractory medulloblastoma, a rare, life-threatening brain tumor that mainly affects children (Press release, BioInvent, MAY 2, 2016, View Source [SID:1234511754]).

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Today’s study initiation follows the earlier announced partnership between BioInvent, its TB-403 project partner Oncurious, and the Neuroblastoma and Medulloblastoma Translational Research Consortium (NMTRC) in the US. NMTRC is a collaboration of 25 US academic medical centers, teaching hospitals and other entities, with the purpose of facilitating and conducting collaborative research activities and investigations of new treatments for neuroblastoma, medulloblastoma and other pediatric cancers.

Headquartered at the Helen DeVos Children’s Hospital in Grand Rapids, MI, USA, NMTRC is the key clinical trial partner for this Phase I/IIa study. The study aims at recruiting a minimum of 27 patients, with first results expected to be reported in 2017.

TB-403 is a humanized monoclonal antibody against placental growth factor (PlGF) which is expressed in several types of cancer, including medulloblastoma. A paper in Cell in February 2013 (Cell, 152, 1065-76, 2013), highlighted for the first time that PlGF plays a role in the growth and spread of medulloblastoma. The paper was based on pre-clinical research conducted by Prof Rakesh Jain from the Massachusetts General Hospital at Harvard Medical School (Boston) and the team of Prof Peter Carmeliet from Vesalius Research Center, VIB Katholieke Universitiet, Leuven, Belgium.

Treatment with TB-403 in pre-clinical models for medulloblastoma has demonstrated beneficial effects on tumor growth and survival. TB-403 has been shown to have a favorable safety profile in previous clinical trials in healthy volunteers and adult patients with various types of solid tumors.

The drug candidate TB-403 is jointly owned by BioInvent and the Belgian biopharma company Oncurious NV.

Michael Oredsson, CEO of BioInvent commented, "The initiation of this study is a key step in the development of this new targeted potential treatment for children with devastating brain cancers. We are looking forward to be working with NMTRC’s experienced investigator network to complete this study in a timely manner."

Dr Patrik De Haes, Executive Chairman of Oncurious, commented, "We are pleased to announce the initiation of this important Phase I/IIa study with TB-403, a key corporate milestone for Oncurious. Given the encouraging pre-clinical data generated with TB-403 in Leuven and Boston, we are hopeful that this novel antibody, targeting placental growth factor, will provide an improved treatment option for children afflicted with this lethal brain tumor."

Giselle Sholler, MD MSC, of NMTRC, commented, "We are delighted to be starting this study, which is very much in line with our mission to bring forward new therapies that could improve the quality of life and survival of children with medulloblastoma. We believe that with its unique mode of action TB-403 could offer an important solution to address this tremendous unmet medical need."

Progenics Licenses PSMA Antibody Technology to Bayer for Development of Alpha-Radiolabeled Therapeutic Antibodies

On May 02, 2016 Progenics Pharmaceuticals, Inc. (Nasdaq:PGNX) reported that it has granted an exclusive license to Bayer for the development and commercialization of therapeutic antibodies combining the Company’s prostate specific membrane antigen (PSMA) antibody technology with Bayer’s targeted thorium conjugate technology (Press release, Progenics Pharmaceuticals, MAY 2, 2016, View Source [SID:1234511743]).

"While there have been recent advances in the treatment of prostate cancer, there remains a great need for therapies that can more specifically target primary and metastatic prostate cancer," said Mark R. Baker, Chief Executive Officer of Progenics. "This license agreement with Bayer further validates the value of our PSMA antibody technology in the development of targeted cancer treatments. We are pleased that Bayer recognizes the potential of our technology."

PSMA is a protein that has been found to be amplified on the surface of >95% of prostate cancer cells and is a validated target for the detection of primary and metastatic prostate cancer. Antibody-thorium conjugates are comprised of a radioactive alpha emitter, thorium-227, linked to an antibody, in this case PSMA. The thorium conjugates bind to the surface of tumor cells and emit alpha particles that destroy tumor cells by inducing DNA double-strand breaks, with no need for uptake into the cells for efficacy.

Per the terms of the license agreement, Progenics will receive an upfront fee and could receive additional potential clinical and regulatory development milestones. If approved, Progenics is entitled to single digit royalties and sales milestone payments.

BIND Therapeutics Initiates Voluntary Chapter 11 Bankruptcy Protection Proceeding

On May 2, 2016 BIND Therapeutics, Inc. (NASDAQ:BIND), a biotechnology company developing targeted and programmable therapeutics called ACCURINS, reported that it has elected to file a voluntary petition under Chapter 11 of the Bankruptcy Code in the U.S. Bankruptcy Court for the District of Delaware (Press release, BIND Therapeutics, MAY 2, 2016, View Source [SID:1234511739]).

"We believe this decision is in the best interests of the company and its stockholders," said Andrew Hirsch, president and chief executive officer, BIND Therapeutics. "The protections afforded by Chapter 11 provide for an orderly process and additional time that enables us to pursue the strategic and financial alternatives that are in process. The filing minimizes the impact from the recent demand by our lender, Hercules Technology III, L.P, for accelerated repayment of our outstanding loan. Our current cash and assets exceed the loan amount, and we are current on our regularly scheduled repayment obligations. Through this process, we expect to be able to maintain ongoing financing activities and collaborator obligations while moving our R&D initiatives and pipeline forward."

BIND intends to continue to manage and operate its business under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code and the orders of the Bankruptcy Court. The Company is working with an investment bank to review financial and strategic alternatives with the goal of maximizing stockholder value. Potential alternatives to be explored further and evaluated during the review process may include raising additional capital, a strategic collaboration with one or more parties, or the licensing, sale or divestiture of some, or all, of the Company’s proprietary technologies.

BIND plans to continue its development and collaboration activities in accordance with its current innovative medicines strategy throughout this process.

Celsion Corporation Announces Positive Data from the First Cohort of Patients in the OVATION Study

On May 2, 2016 Celsion Corporation (NASDAQ: CLSN), an oncology drug development company, reported data from the first cohort of patients in its Phase Ib dose escalating clinical trial (the OVATION Study) combining GEN-1, the Company’s DNA-based immunotherapy, with the standard of care for the treatment of newly-diagnosed patients with advanced ovarian cancer who will undergo neoadjuvant chemotherapy followed by interval debulking surgery (Press release, Celsion, MAY 2, 2016, View Source [SID:1234511730]).

In the first three patients dosed, GEN-1 plus standard chemotherapy produced excellent results, with no dose limiting toxicities and highly promising efficacy signals leading to successful surgical outcomes. The three patients were treated at the University of Alabama at Birmingham.

"These results, while early, are very impressive and speak to the potential of GEN-1 to improve patient outcomes in ovarian cancer," said Ronald D. Alvarez, M.D., Professor, Division of Gynecologic Oncology at the University of Alabama at Birmingham. "In particular, we see improvements across a number of important and meaningful measures used to assess ovarian cancer, which reinforce our confidence in this IL-12 immunotherapy approach and provide a strong rationale for continued development of GEN-1 for the treatment of ovarian cancer."

OVATION Study – First Cohort Results

Of the three patients treated in the first cohort, two patients demonstrated stable disease (SD) and one patient demonstrated a complete response (CR), as measured by RECIST criteria.
All patients had successful resections of their tumors, with two patients having an R0 resection, which indicates a microscopically margin-negative resection in which no gross or microscopic tumor remains in the tumor bed, and one patient with an optimal R1 resection.
One patient demonstrated a pathological complete response (pCR). pCRs are typically seen in less than 7% of patients receiving neoadjuvant chemotherapy followed by surgical resection, and have been associated with a median overall survival (OS) of 72 months, which is more than three years longer than those who do not experience a pCR&supl;.
All patients experienced a dramatic > 96% drop in their CA-125 protein levels as of their most recent study visit. CA-125 is used to monitor certain cancers during and after treatment. CA-125 is present in greater concentrations in ovarian cancer cells than in other cells. A 50% reduction in CA-125 levels is considered meaningful. All patients’ CA-125 levels were below the standard cutoff level of 35 U/mL.
"These results build on the impressive clinical findings we observed in the GOG Study as well as the translational data from this same study reported earlier this year. As we move closer towards initiating a Phase I/II trial to evaluate the synergistic anti-cancer effects of GEN-1 together with Avastin and Doxil, these results also provide strong validation for the potential of GEN-1 in ovarian cancer," said Michael H. Tardugno, Celsion’s chairman, president and chief executive officer. "We will continue to evaluate the maturing dataset from the OVATION study, and may evaluate ways to leverage insights from this trial to help accelerate the clinical development of this highly promising therapy and inform the design of future studies."

The OVATION Study will continue into 2016 at higher doses of GEN-1 with the goal to identify a safe, tolerable and therapeutically active dose of GEN-1 by recruiting and maximizing an immune response. Celsion has initiated four clinical sites at the University of Alabama at Birmingham; Oklahoma University Medical Center; Washington University in St. Louis and the Medical College of Wisconsin. The trial is designed to enroll three to six patients per dose cohort and will evaluate safety and efficacy and attempt to define an optimal dose. Future studies of GEN-1 will include a Phase I/II study combining GEN-1 with Avastin and Doxil. With the second cohort fully enrolled, Celsion expects to complete the OVATION Study this year.

GOG Study – GEN-1 Data

Celsion also recently announced clinical data from a dose-escalation study evaluating GEN-1 plus Doxil in platinum resistant ovarian cancer (the GOG Study). In the GOG Study, at the highest dose level, GEN-1 plus Doxil produced an objective response rate (ORR) of 29%. This compares favorably to the data from the Phase 3 AURELIA trial in platinum-resistant ovarian cancer, which demonstrated that Avastin plus chemotherapy produced an ORR of 27%. Historical data for trials evaluating Doxil monotherapy in platinum resistant ovarian cancer suggest an ORR of only 8% to 12%.

Translational data from the GOG Study reported in January 2016 is highlighted below:

Intraperitoneal administration of GEN-1 in platinum-resistant ovarian cancer patients resulted in a significant increase in IL-12 levels in peritoneal fluid samples. IL-12 levels were quantifiable in 91% of evaluable fluid samples collected post GEN-1 treatment. None of the evaluable pre-treatment peritoneal fluid samples had any detectable IL-12 levels.
The IL-12 levels were detectable for at least seven days after GEN-1 treatment.
In comparison to peritoneal fluid, the IL-12 levels in plasma samples (systemic exposure) following GEN-1 treatment were not detectable or were very low in quantity.
Significant increases in levels of IFN-γ, a key downstream mediator of IL-12 action, were observed in peritoneal fluid but not in plasma samples. At least a 5-fold increase above pre-treatment level in IFN- γ was observed in most samples, with the highest increase observed at 120-fold. Similar results were observed with TNF-α levels, with the highest increase observed at 77-fold over pre-treatment control.
About GEN-1 Immunotherapy

GEN-1, designed using Celsion’s proprietary TheraPlas platform technology, is an IL-12 DNA plasmid vector encased in a nanoparticle delivery system, which enables cell transfection followed by persistent, local secretion of the IL-12 protein. IL-12 is one of the most active cytokines for the induction of potent anti-cancer immunity acting through the induction of T-lymphocyte and natural killer (NK) cell proliferation. The Company has previously reported positive safety and encouraging Phase I results with GEN-1 given as monotherapy in patients with peritoneally metastasized ovarian cancer, and recently completed a Phase Ib trial of GEN-1 in combination with PEGylated doxorubicin in patients with platinum-resistant ovarian cancer.

Cempra Reports First Quarter 2016 Financial Results and Provides Corporate Update

On May 01, 2016 Cempra, Inc. (Nasdaq:CEMP), a clinical-stage pharmaceutical company focused on developing antibiotics to meet critical medical needs in the treatment of bacterial infectious diseases, reported financial results for the quarter ended March 31, 2016 and provided an update on recent corporate developments (Press release, Cempra, MAY 1, 2016, View Source [SID:1234511732]). The company will host a webcast and conference call tomorrow at 8:00 a.m. ET.

First Quarter 2016 and Recent Corporate Highlights

In April, Cempra completed its rolling submission of two New Drug Applications (NDA) to the U.S. Food and Drug Administration (FDA) for solithromycin (intravenous and capsules) in community-acquired bacterial pneumonia (CABP). Having been granted qualified infectious diseases product (QIDP) designation in 2013, solithromycin’s NDAs qualify for an eight month priority review. Subject to approval by the FDA, Cempra plans to launch solithromycin in the U.S. in the first quarter of 2017.

In March, Cempra received authorization under its existing contract with the Biomedical Advanced Research and Development Authority (BARDA), part of the Office of the Assistant Secretary for Preparedness and Response within the U.S. Department of Health and Human Services, to receive funding of $25.5 million through mid-2018 for a Phase 2/3 pivotal clinical study of solithromycin in pediatric patients. Cempra is responsible for an additional designated portion of the cost of the planned Phase 2/3 study. Three dosage formulations of solithromycin, intravenous, capsule and oral suspension, will be tested in the trial and may provide pediatricians with greater dosing flexibility.

In January, Cempra completed a public offering of 4,166,667 shares at a price of $24.00 per share. Net proceeds after underwriting discounts and commissions and expenses of the offering were approximately $93.8 million. Cempra intends to use the funds for the commercial launch of solithromycin in CABP in the U.S., subject to the drug receiving FDA approval, and on research and development activities, working capital and general corporate and administrative expenses.

The Taksta (fusidic acid) acute bacterial skin and skin structure infection (ABSSSI) Phase 3 trial is enrolling patients, which is expected to be completed during the first half of 2017.
"I am truly delighted that Cempra is able to mark the tenth anniversary of its founding with our submission to the FDA of two NDAs for solithromycin in community-acquired bacterial pneumonia," said Prabhavathi Fernandes, Ph.D., president and chief executive officer of Cempra. "As a new chemical entity, we expect that solithromycin will be subject to an advisory committee review, however given the compelling data package that we have assembled, we look forward to working with the agency during the review process to bring this important new macrolide antibiotic to patients with CABP and the physicians who treat them. Our development programs for solithromycin for pediatric patients and urogenital gonorrhea, as well our development program for Taksta, are continuing to move forward."

Upcoming Clinical Development Milestones

Solithromycin

Solithromycin pediatric: patient enrollment for Phase 1b trial continues.
Enrollment in a Phase 2/3 pivotal trial with solithromycin for bacterial infections in pediatric patients is expected to initiate in Q2 2016.
Phase 3 trial for solithromycin in urogenital gonorrhea is ongoing.
Phase 2 trial in chronic obstructive pulmonary disease (COPD) is ongoing.
Phase 2 trial in nonalcoholic steatohepatitis (NASH) is ongoing.
Completion of the EMA submission for solithromycin in the treatment of CABP is expected by the end of the first half of 2016.
Taksta

Phase 3 trial in ABSSSI is ongoing.
An exploratory trial for Taksta in patients with refractory bone or joint infections is ongoing.
Financial Results for the Three Months Ended March 31, 2016

For the quarter ended March 31, 2016, Cempra reported a net loss of $29.4 million, or $0.61 per share, compared to a net loss of $17.4 million, or $0.41 per share for the first quarter in 2015. Research and development expense in the first quarter of 2016 was $23.5 million, a decrease of 10% compared to the same quarter in 2015. The lower R&D expense was primarily due to the timing of payments for the order of active pharmaceutical ingredient (API) necessary to support the launch of solithromycin as the company begins its commercial readiness activities and a decrease in clinical expenses as the Phase 3 Oral and Phase 3 IV-to-Oral studies are complete. General and administrative expense was $8.3 million, a 79% increase compared to the quarter ended March 31, 2015, driven primarily by commercial readiness activities and increased headcount as the company begins to plan for commercialization.

As of March 31, 2016, Cempra had cash and equivalents of $223.6 million and 48.2 million shares outstanding.

Financial Guidance

The company’s current cash and equivalents are expected to be sufficient to fund ongoing operations into the second quarter of 2017, assuming continued timely receipts under the BARDA contract and receipt of expected milestone payments from Toyama. This projection does not include any funds from new financings or partnerships.