Optimer Pharmaceuticals Receives Polymorph Patent for Lead Product Candidate OPT-80
Optimer Pharmaceuticals, Inc. (Nasdaq:OPTR) announced today that the United States Patent and Trademark Office has issued U.S. Patent No. 7,378,508 entitled “Polymorphic Crystalline Forms Of Tiacumicin B.” This patent includes claims covering a novel polymorphic form of the active pharmaceutical ingredient in the investigational drug candidate, OPT-80. The patent specifically claims the Form A polymorph of OPT-80, as well as all dosage forms and pharmaceutical compositions including the Form A polymorph of OPT-80. OPT-80 is currently in two Phase 3 clinical trials for the treatment of Clostridium difficile infection, or CDI, also known as C. difficile-associated disease, or CDAD.
“The issuance of this polymorph patent is an important milestone in strengthening the intellectual property protection of our lead product candidate, OPT-80,” said Michael N. Chang, Ph.D., President and CEO of Optimer. “Our scientists have determined that polymorphic Form A is the most stable crystalline form of OPT-80. We believe this patent, along with additional pending patent applications, will enhance our intellectual property protection for OPT-80."
OPT-80 is a first in-class narrow spectrum antimicrobial agent with excellent activity against many clostridia including C. difficile and moderate activity against certain gram-positive bacteria. OPT-80, with its narrow spectrum profile, may eradicate C. difficile selectively with minimal disruption to the normal intestinal flora. This may facilitate the return of the normal physiological condition in the colon and reduce the probability of CDI recurrence.
About Optimer Pharmaceuticals
Optimer Pharmaceuticals, Inc. is a biopharmaceutical company focused on discovering, developing and commercializing innovative anti-infective products for the treatment of serious infections. Optimer has two late-stage anti-infective product candidates. OPT-80, currently in two pivotal Phase 3 clinical trials, is being developed for the treatment of Clostridium difficile infection, the most common hospital-acquired diarrhea. Prulifloxacin, also in two pivotal Phase 3 clinical trials, is an antibiotic being developed for the treatment of travelers’ diarrhea, a form of infectious diarrhea. Additional information regarding Optimer can be found at http://www.optimerpharma.com.