A novel antibiotic to treat gonorrhea demonstrated efficacy in clinical trials, preliminary results show. The Phase III trial included 930 people with gonorrhea in Belgium, the Netherlands, South Africa, Thailand and the U.S. Researchers found that a single dose of zoliflodacin, developed by Innoviva Specialty Therapeutics, is safe and effective for treating cases of uncomplicated urogenital gonorrhea. The results have not yet been peer-reviewed or published. In addition to its efficacy, zoliflodacin is taken orally, which could aid in patient access and compliance. The current standard treatment, ceftriaxone, is injected. The antibiotic, developed with support from the National Institute of Allergy and Infectious Diseases, uses a unique mechanism to inhibit an enzyme crucial for bacterial function and reproduction. Why it matters: Gonorrhea, a sexually transmitted disease, is increasingly difficult to treat due to antimicrobial resistance in Neisseria gonorrhoeae, the bacteria that causes gonorrhea. Left untreated, gonorrhea can create serious and permanent damage, including pelvic inflammatory disease and infertility. While antimicrobial resistance is on the rise across bacteria and viruses, N. gonorrhoeae is particularly adept at evading treatment, with demonstrated resistance to most existing classes of antibiotics. Researchers have recently detected strains that don’t respond to ceftriaxone. Meanwhile, STD numbers are rising in the U.S. According to data from the Centers for Disease Control and Prevention, from 2017 to 2021, STD cases increased by 7 percent, including a 28 percent increase in gonorrhea cases, reaching more than 700,000 cases in 2021. What’s next? “These encouraging results should bolster additional, intersectoral efforts to develop safe and effective therapeutic options for gonorrhea and other bacteria that exhibit antimicrobial resistance,” said Dr. Jeanne Marrazzo, the NIAID director, in a release.
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