ClinicalTrials.Veeva

Menu

A Study Evaluation the Safety and Efficacy of Hormone Replacement Therapy With North Star Compared to Levothyroxine in Patients With Primary Hypothyroidism

N

Neuvosyn Laboratories

Status and phase

Completed
Phase 2

Conditions

Hypothyroidism

Treatments

Drug: North Star
Drug: Levothyroxine

Study type

Interventional

Funder types

Industry

Identifiers

NCT05712421
NorthStar-02-001

Details and patient eligibility

About

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.

Enrollment

303 patients

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • 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

Exclusion criteria

  • Any clinical condition or previous surgery that might affect the absorption, distribution, biotransformation or excretion of North Star or levothyroxine
  • Hospitalization for a major illness within 4 weeks prior to Screening
  • Anticipated initiation or change in concomitant medications
  • Concomitant use of prohibited medications or supplements
  • Participated in another investigational new drug study within 30 days or 5 half-lives of the IMP, whichever is longer, prior to the first study drug administration.
  • For female subjects, be pregnant, nursing or planning to become pregnant during the study

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

303 participants in 2 patient groups

North Star
Experimental group
Treatment:
Drug: North Star
Levothyroxine
Active Comparator group
Treatment:
Drug: Levothyroxine

Trial contacts and locations

31

Loading...

Data sourced from clinicaltrials.gov

Clinical trials

Find clinical trialsTrials by location
© Copyright 2026 Veeva Systems