Optimer Pharmaceuticals and Clinical Investigators to Present Data at Upcoming Medical Meetings

Digestive Disease Week (DDW), McCormick Place, Chicago, IL

May 7-10, 2011

Poster Presentation Information:

Title:

Risk of Recurrence and Time to Recurrence Following Treatment of Clostridium

difficile Infection: Patient Characteristics and the Differential Effect of Fidaxomicin

vs. Vancomycin

Presenter:

Kathleen M. Mullane, D.O.

Date:

Saturday, May 7, 2011

Time:

12:00 p.m. to 2:00 p.m. Central Time

Location:

Poster Session Hall A (MCP)

Session:

Intestinal Disorders: Prebiotics, Probiotics and Pathogens

Program #:

Sa1981

Poster Presentation Information:

Title:

High Fecal and Low Plasma Levels of Fidaxomicin and Metabolite OP-1118 in

Patients with C. difficile infection:  Combined Results of Two Phase 3 Trials

Presenter:

Pamela S. Sears, Ph.D.

Date:

Monday, May 9, 2011

Time:

12:00 p.m. to 2:00 p.m. Central Time

Location:

Poster Session Hall A (MCP)

Session:

Randomized Controlled Clinical Trials

Program #:

Mo1160

European Congress of Clinical Microbiology and Infectious Diseases and International Congress of Chemotherapy, Milano Convention Center, Milan, Italy

May 7-10, 2011

Oral Presentation Information:

Title:

Immunosuppression and the Risk of Death, Cure Rates and Disease Recurrence

Among Patients with Clostridium difficile Infection

Presenter:

Yoav Golan, M.D., M.S.

Date:

Tuesday, May 10, 2011

Time:

10:36 a.m. to 10:48 a.m. Central European Time

Location:

Lecture Hall Brown 1

Oral Session:

C. difficile News

Presentation #:

O504

Poster Presentation Information:

Title:

Clostridium difficile Recurrence, Alcohol Consumption, and the Effect of

Fidaxomicin vs. Vancomycin

Presenter:

Yoav Golan, M.D., M.S.

Date:

Tuesday, May 10, 2011

Time:

12:30 p.m. to 1:30 p.m. Central European Time

Location:

Poster Area Hall 5

Poster Topic 99:

Clostridium difficile

Poster ID#:

P1968

2011 Annual Scientific Meeting of the American Geriatrics Society (AGS), The Gaylord National Hotel, National Harbor, Maryland

May 11-14, 2011

Poster Presentation Information:

Title:

Effect of Advancing Age on Outcomes of Therapy for Clostridium difficile Infection

Presenter:

Thomas J. Louie, M.D.

Date:

Thursday, May 12, 2011

Time:

4:30 p.m. to 6:00 p.m. Eastern Time

Session:

Presidential Poster Session B

Location:

Exhibit Hall

Poster ID#:

B126