Comparing different levothyroxine formulations for treating congenital hypothyroidism in newborns

Comparison of Levothyroxine Formulations in the Treatment of Congenital Hypothyroidism

IRCCS Azienda Ospedaliero-Universitaria di Bologna · NCT06724224

This study is testing which of three different forms of levothyroxine—oral solution, liquid drops, or tablets—works best and is safest for newborns with congenital hypothyroidism.

Quick facts

Study typeObservational
Enrollment120 (estimated)
AgesN/A to 11 Years
SexAll
SponsorIRCCS Azienda Ospedaliero-Universitaria di Bologna (other)
Locations1 site (Bologna, Bologna)
Trial IDNCT06724224 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the efficacy and safety of three different formulations of levothyroxine (oral solution, liquid drops, and tablets) in newborns diagnosed with congenital hypothyroidism. The study will include both a prospective cohort of patients currently receiving treatment and a retrospective cohort of patients who have already been treated. Data on medical history, clinical outcomes, and biochemical markers will be collected to assess the medium- and long-term effects of each formulation. The research is conducted at the Centre for Endocrine-Metabolic Diseases of the Pediatrics Unit in Bologna, Italy.

Who should consider this trial

Good fit: Ideal candidates include newborns diagnosed with congenital hypothyroidism who are receiving treatment at the study center and are under 11 years old.

Not a fit: Patients with known chromosomal abnormalities or complex syndromes, or those who started therapy at another center, may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could help identify the most effective levothyroxine formulation for managing congenital hypothyroidism in newborns, leading to better health outcomes.

How similar studies have performed: While similar studies have explored levothyroxine formulations, this specific comparison in a pediatric population is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Newborn screening test positivity for Congenital Hypothyroidism; Subjects born in Emilia-Romagna region, Italy, and undergoing diagnostic confirmation and initiation of replacement therapy; Diagnosis-confirmed subjects who underwent L-T4 replacement therapy in the first month of life at Center for Endocrine-Metabolic Diseases, Pediatrics Units of the IRCCS Azienda Ospedaliero-Universitaria di Bologna Policlinico di S.Orsola, Italy; Age ≤11 years old; Obtaining informed consent from parents and/or legal guardians and assent from minors included in the study.

Exclusion Criteria:

Known chromosomal abnormalities or complex syndromes; Patients transferred to another center before completion of at least one year of follow-up from the start of therapy; Patients who started therapy at another center.

Where this trial is running

Bologna, Bologna

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Congenital Hypothyroidism

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.