Clinical Trial Success and Regulatory Approval Risk: NovoCure's future growth and market expansion heavily depend on the successful outcome of ongoing and future clinical trials for new indications and the ability to secure and maintain regulatory approvals globally.

Market Adoption and Patient Adherence Challenges: Despite regulatory approvals, broad market acceptance by oncologists and consistent patient adherence to the Tumor Treating Fields (TTFields) therapy remain critical hurdles due to its unique nature, wearability, and the need for significant lifestyle adjustments.

Reimbursement and Payer Coverage Uncertainty: Securing and maintaining favorable reimbursement policies and broad payer coverage from government and private insurers for its high-cost therapy is essential for patient access, commercial viability, and revenue generation.