A Randomized, Double-blind, Dose-Conversion Study to Evaluate the Safety and Efficacy of Hormone Replacement Therapy With North Star Compared to Levothyroxine in Subjects With Primary Hypothyroidism Who Are Euthyroid on Levothyroxine Replacement Therapy
The North Star study is a multi-center, Phase 2, double-blind, randomized, parallel group clinical study to evaluate the safe and effective dose conversion from Levothyroxine to North Star therapy.
• Diagnosed with primary hypothyroidism
• On continuous thyroid replacement therapy for at least 6 months before Study Entry
• On a stable daily dose of LT4 for a minimum of 12 weeks prior to Screening
• Agree to practice a method of contraception
• Female patients not pregnant or lactating at Screening
• Agree to practice a method of contraception of greater than 90% reliability
• Willing to give written informed consent for the Study
• Provide written authorization for use and disclosure of protected health information