Processa Pharmaceuticals Provides Interim Analysis from Ongoing Phase 1b Trial of Next Generation Capecitabine Showing Improved Safety Over Capecitabine

FDA acknowledges that NGC-Cap is a New Chemical Entity given the changes to metabolism and distribution of its major metabolite 5-FU

Interim analysis of the NGC-Cap Phase 1b data shows improved safety, even with 5-FU exposure much greater than that from capecitabine

Company to conduct Fireside Chat at 4:30PM ET on December 20, 2023

HANOVER, MD, Dec. 19, 2023 (GLOBE NEWSWIRE) -- Processa Pharmaceuticals, Inc. (Nasdaq: PCSA) (“Processa” or the “Company”), a clinical-stage pharmaceutical company focused on developing the next generation of chemotherapeutic drugs to improve the safety and efficacy for more cancer patients, provides an interim analysis from its Phase 1b study of its Next Generation Capecitabine (NGC-Cap).

“These initial data provide our first confirmatory clinical evidence that NGC-Cap is metabolized differently than capecitabine and, as a result, may offer significant improvements in safety and efficacy over capecitabine, a commonly used chemotherapeutic agent across multiple cancer indications. We are encouraged to be near completion of the Phase 1b trial as we make preparations for a subsequent Phase 2 trial with NGC-Cap,” said David Young, Pharm.D., Ph.D., President of Research and Development at Processa.

Thus far in the Phase 1b study, patients have received doses of NGC-Cap ranging from 75 mg once a day to 225 mg twice a day, significantly less than the 1,600 mg to 2,500 mg twice a day dose administered for FDA-approved capecitabine. More importantly, these much lower doses for NGC-Cap result in 5-FU (5-fluorouracil, the main metabolite of capecitabine that further metabolizes into desirable cancer-killing molecules called anabolites and undesirable molecules called catabolites that cause unwanted side effects) exposure up to 10 times greater than the higher FDA-approved capecitabine doses due to NGC-Cap’s unique metabolic pathway. One would anticipate that the much greater 5-FU exposure would result in greater and/or more severe side effects when, in fact, the side effect profile for 5-FU exposures from NGC-Cap had a similar anabolite side effect profile to FDA-approved capecitabine.

In addition, the side effects associated with FBAL (fluoro-beta-alanine, the primary catabolite formed from the metabolism of 5-FU), such as hand-foot syndrome, that can lead to capecitabine intolerance, were almost non-existent, likely because FBAL exposure was approximately 1% of the exposure seen after FDA-approved capecitabine administration.