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FDA Grants QIDP And Fast Track Designations For Cubist’s Late-Stage Antibiotic Candidates

Stocks in this article: CBST

Cubist Pharmaceuticals, Inc. (NASDAQ: CBST) today announced that the U.S. Food and Drug Administration (FDA) has designated the company’s late-stage antibiotic candidate, ceftolozane/tazobactam, as a Qualified Infectious Disease Product (QIDP) for the indications of Hospital-Acquired Bacterial Pneumonia (HABP)/Ventilator-Associated Bacterial Pneumonia (VABP) and Complicated Urinary Tract Infections (cUTI).

Additionally, the company received from the FDA notification that Cubist’s antibiotic candidates, ceftolozane/tazobactam and surotomycin, have been granted Fast Track status in their previously granted QIDP indications, Complicated Intra-Abdominal Infections (cIAI) and Clostridium difficile-Associated Diarrhea (CDAD) respectively.

“We are excited to receive the QIDP and Fast Track designations for ceftolozane/tazobactam and surotomycin, which further reinforce the importance the FDA places on helping to advance critically needed antibiotics,” said Steven Gilman, Ph.D., Executive Vice President of Research and Development and Chief Scientific Officer of Cubist Pharmaceuticals. “In a very short period of time, the GAIN Act has shown its value in helping to incentivize antibiotic development.”

The QIDP designation for ceftolozane/tazobactam will enable Cubist to benefit from certain incentives for the development of new antibiotics, including priority review, eligibility for Fast Track status, and if ceftolozane/tazobactam is ultimately approved by the FDA, a five year extension of Hatch-Waxman exclusivity. These incentives are provided under the Generating Antibiotic Incentives Now Act (GAIN Act), which received strong bipartisan support in Congress and was signed into law by President Obama in July 2012 as part of the FDA Safety and Innovation Act (FDASIA), the fifth authorization of the Prescription Drug User Fee Act.

Ceftolozane/tazobactam is currently being studied in pivotal Phase 3 trials as a potential first-line intravenous therapy for the treatment of cIAI and cUTI caused by Gram-negative pathogens, including those caused by multi-drug resistant Pseudomonas aeruginosa. Cubist expects to initiate a Phase 3 VABP program for ceftolozane/tazobactam by mid-year. Surotomycin, a rapidly bactericidal lipopeptide, is currently in Phase 3 being studied as a potential treatment for patients with a severe and sometimes life-threatening diarrhea caused by CDAD.

About The GAIN Act

The GAIN Act, Title VIII (Sections 801 through 806) of the FDASIA, provides pharmaceutical and biotechnology companies with incentives to develop new antibacterial and antifungal drugs for the treatment of life-threatening infectious diseases caused by drug resistant pathogens. Qualifying pathogens are defined by the GAIN Act to include multi-drug resistant Gram-negative bacteria, including Pseudomonas, Acinetobacter, Klebsiella, and Escherichia coli species; resistant Gram-positive pathogens, including methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus; multi-drug resistant tuberculosis; and Clostridium difficile.

About Gram-negative bacteria

The diseases caused by Gram-negative bacteria include intra-abdominal infections, urinary tract infections, pneumonia, peritonitis, septicemia, neonatal meningitis, and burn and wound infections. In the US in 2003, Gram-negative bacteria were associated with many of the most frequent types of hospital-acquired infections including 71% of urinary tract infections, 65% of pneumonia episodes, 34% of surgical site infections, and 24% of bloodstream infections. Important Gram-negative bacteria include Pseudomonas, Escherichia coli, Klebsiella, and Acinetobacter.

About CDAD

CDAD is a disease caused by an overgrowth of, and toxin production by C. difficile, a Gram-positive bacterium naturally found in the lower gastrointestinal tract. This overgrowth is caused by the use of antibiotics for the treatment of common community and hospital acquired infections. Many antibiotics cure the underlying infection but, as a consequence, disrupt the natural balance of intestinal bacteria which allows C. difficile to overgrow. The overgrown C. difficile bacteria produce enterotoxin and cytotoxin, two proteins that can lead to potentially life-threatening severe diarrhea and sepsis (blood infection). CDAD rates and severity are increasing, due in part to the spread of a new strain with increased virulence and greater resistance to fluoroquinolones, a standard of care treatment. According to an article in the October 2008 issue of the New England Journal of Medicine, during the mid- and late-1990s, the reported incidence of C. difficile infections in acute care hospitals in the United States remained stable at 30 to 40 cases per 100,000. However in 2001, this number rose to almost 50, with subsequent increases to the point that the number of cases that were reported in 2005 (84 per 100,000) was nearly three times the 1996 rate (31 per 100,000).

About Cubist

Cubist Pharmaceuticals, Inc. is a biopharmaceutical company focused on the research, development, and commercialization of pharmaceutical products that address significant unmet medical needs in the acute care environment. Cubist is headquartered in Lexington, Mass. Additional information can be found at Cubist’s web site at www.cubist.com.

Cubist Safe Harbor Statement

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other federal securities laws. Any statements contained herein which do not describe historical facts, including but not limited to, statements regarding: (i) the anticipated favorable impact resulting from the FDA’s designating ceftolozane/tazobactam as a QIDP, including a five year extension of Hatch-Waxman exclusivity if ceftolozane/tazobactam is ultimately approved by the FDA and (ii) the expected timing of beginning our Phase 3 program in ventilator-associated bacterial pneumonia for ceftolozane/tazobactam, are forward-looking statements which involve risks and uncertainties that could cause actual results to differ materially from those discussed in such forward-looking statements.

Such risks and uncertainties include, among others: clinical trials of ceftolozane/tazobactam may not be successful or initiated or conducted in a timely manner and the timing of initiation and conduct of subsequent trials is dependent on our ability to successfully work with regulatory authorities, including the FDA on the design of the trials, among other things; we plan to rely, to a significant extent, on third party clinical research organizations, or CROs, to help us conduct clinical trials so the success and timing of these trials is dependent our ability to work with such CROs and their performance; technical difficulties or excessive costs relating to the manufacture or supply of ceftolozane/tazobactam; we plan to rely, to a significant extent, on third party contract manufacturers and suppliers to manufacture and supply ceftolozane/tazobactam on our behalf so our ability to obtain adequate supplies of ceftolozane/tazobactam is dependent on our ability to work with such third parties and on their performance; we may encounter other unanticipated or unexpected risks with respect to the development or manufacture of ceftolozane/tazobactam; and those additional factors discussed in our most recent annual report on Form 10-K filed with the Securities and Exchange Commission. We caution investors not to place considerable reliance on the forward-looking statements contained in this press release. These forward-looking statements speak only as of the date of this document, and we undertake no obligation to update or revise any of these statements.



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