Scilex Pharmaceuticals, a subsidiary of Scilex Holding Company, has announced a successful end-of-Phase II meeting with the FDA, securing an agreed-upon path forward for a New Drug Application (NDA) for its lead product candidate, SP-103. This next-generation formulation of ZTlido is designed to treat chronic neck pain associated with muscle spasms.
SP-103: A Potential Blockbuster for Chronic Neck Pain
SP-103 (lidocaine topical system) 5.4% represents a triple-strength formulation of ZTlido, leveraging a higher concentration of lidocaine to potentially enhance therapeutic response. The U.S. market for low back and neck pain is substantial, estimated at $134.5 billion. According to market research by Syneos Health Consulting, SP-103 has the potential to reach peak sales of $1.2 billion annually within six years of launch.
"We are very pleased with the end of Phase II meeting and received a clear path forward to NDA for our blockbuster product candidate, SP-103," said Dmitri Lissin, M.D., Chief Medical Officer of Scilex. "SP-103 has the potential to meet our core goal of developing leading pain management therapies to significantly improve the lives of patients for the treatment of chronic neck pain associated with muscle spasms who are seeking new effective treatments."
Clinical and Commercial Strategy
Scilex plans to initiate Phase 3 trials for SP-103, building on the Phase 2 data and the FDA's guidance. The company believes its technology allows for a much higher lidocaine concentration compared to other topical lidocaine systems, which is crucial for achieving a therapeutic response. Scilex already has three FDA-approved commercial products, including ZTlido for postherpetic neuralgia, ELYXYB for acute migraine, and Gloperba for gout flare prophylaxis.
Strategic Considerations
Scilex Holding Company's Board of Directors is exploring options to maximize the value of Scilex and its subsidiaries, including a potential spin-off or public listing of Scilex Pharmaceuticals Inc. This strategic review aims to capitalize on the potential of SP-103 and Scilex's existing portfolio of pain management products.