Creates provisions relating to insurance coverage of prescription drugs for advanced, metastatic cancer

HB 3059 requires health insurance plans in Missouri to cover prescription drugs for advanced, metastatic cancer and related symptoms (like treatment side effects) without first demanding that patients try and fail other drugs. It directly affects cancer patients enrolled in health benefit plans, including MO HealthNet (Missouri's Medicaid program), by removing barriers to accessing necessary medications. The bill specifies coverage must apply to FDA-approved drugs that align with evidence-based medical guidelines and best practices for treating advanced cancer. This change ensures patients aren't forced to undergo ineffective treatments or provide proof of prior failures before receiving covered care.