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Congenital HypothyroidismPhase 4NCT05371262

Influence of Initial Levothyroxine Dose on Neurodevelopmental and Growth Outcomes in Congenital Hypothyroidism

A Phase 4 study testing Levothyroxin in people with Congenital Hypothyroidism, run by Federico II University.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The primary objective of this study is to evaluate the risk-benefit profile of long-term treatment of two different initials treatment schemes with L-T4 on the neurodevelopmental and auxological outcomes in children with congenital hypothyroidism, diagnosed by neonatal screening in order to find the best dose of… Read more about this study

Who is it for?
Ages 3 to 29 days
Conditions the study is for
Congenital Hypothyroidism
What is being tested?
Levothyroxin
Could I receive a placebo?
No, everyone receives an active treatment
How many people
72 participants
Where
No sites listed yet
Study dates
May 2011to May 2018
Phase
Phase 4
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 3 to 29 days
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Congenital Hypothyroidism diagnosed by neonatal screening program
  • Age less than 30 days at diagnosis
  • TSH value at confirmatory diagnosis above 30 mU/l
  • Caucasian ethnicity

Who cannot join

  • Prematurity
  • Major congenital malformations
  • Neonatal diseases
  • Chromosomopathies
  • Known maternal thyroid diseases

About this study

Official title: Evaluation of Long-term Benefit-risk Profile of Levothyroxine Treatment in Children With Congenital Hypothyroidism: Influence of Initial Levothyroxine Dose on Neurodevelopmental, Growth, Cardiovascular and Skeletal Outcomes

The primary objective of this study is to evaluate the risk-benefit profile of long-term treatment of two different initials treatment schemes with L-T4 on the neurodevelopmental and auxological outcomes in children with congenital hypothyroidism, diagnosed by neonatal screening in order to find the best dose of initial thyroid hormone replacement to assure the best long-term developmental outcome without any adverse effects on auxological, cardiovascular and skeletal outcomes. The secondary objective of the study is to evaluate the role of other factors that, in addition to the initial L-T4 therapy,can influence long-term neurodevelopmental and auxological outcomes as well as the cardiovascular system and bone metabolism outcomes.

Read the detailed description

Seventy-two neonates detected by the neonatal screening program for congenital hypothyroidism were randomly assigned to receive one of the two initial L-T4 replacement dose: Group A received an initial replacement dose of 10-12.5 mcg/kg/die and Group B received an initial replacement dose of 12.6-15 mcg/kg/die. The adequacy of treatment were monitored closely by clinical evaluation and regular measurement of FT4 and TSH. Cognitive development were evaluated through the Griffiths Mental Development Scales at the the age of 2 yeas. Cognitive and behavioural assessment at the age of 4 years were performed using the Wechsler Preschool and Primary scale of Intelligence. Growth were evaluate at the enrolment and at each visit. Skeletal maturation were evaluated at diagnosis and at the age of 1 and 4 years. At the age of 4 years a quantitative ultrasound measurements and cardiovascular evaluation were performed.

Being tested
Levothyroxin
Keywords
Neonatal screening, Levothyroxine treatment, Neurocognitive, Growth
Medical subject headings
Congenital Hypothyroidism

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • LevothyroxinDrug

    Also called L-T4

    Congenital hypothyroidism children received two different doses of levothyroxin within the recommended range to evaluate any differences in long-term outcomes.

Study groups in NCT05371262
Study groupRoleWhat they receive
10-12.5 μg/kg/day of L-T4Active comparatorChildren with congenital hypothyroidism who received an initial L-T4 dose of 10-12.5 μg/kg/day.
Receives: Drug: Levothyroxin
12.6-15 μg/kg/day of L-T4Active comparatorChildren with congenital hypothyroidism who received an initial L-T4 dose of 12.6-15 μg/kg/day.
Receives: Drug: Levothyroxin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Neurodevelopmental outcomes

    Cognitive and behavioral assessment was performed using Wechsler Preschool and Primary scale of Intelligence (WIPPSI-III). The WIPPSI-III evaluates the intelligence of children between 2.6 and 7.3 years and provides a Total Intelligence Quotient, a Verbal Intelligence Quotient, a Performance Intelligence Quotient and a Processing Speed Quotient. Quotients > 85 are considered normal.

    Measured: At four years of age

  2. Linear Growth

    Linear growth was evaluated periodically during the study through the measurement of length up to 3 years and height subsequently. Length and height were measured in centimeters and are expressed as standard deviation score.

    Measured: 7-10 days after the start of treatment and at 1.5, 3, 6, 9, 12, 18, 24, 30, 36, 42 and 48 months of life.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 May 2022
  2. Study startMay 2011
  3. Primary completionMay 2018
  4. Study completionMay 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Children were randomly assigned to receive an initial L-T4 dose of 10-12.5 μg/kg/day (Group A) or 12.6-15 μg/kg/day (Group B). Randomization was designed according to a block scheme (8 blocks of 6 patients and 6 blocks of 4 patients which were randomly alternated) which guaranteed the frequency balance in the two groups during the enrolment without altering the causality of the assignment. Random allocation sequence was generated using the function sample in R statistical platform.
Masking
None (open label)
Enrolment
72 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05371262
Sponsor's protocol ID
FARM8A8FHP
Status last verified
May 2022
First submitted
4 May 2022
Last updated
12 May 2022
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Leger J, Olivieri A, Donaldson M, Torresani T, Krude H, van Vliet G, Polak M, Butler G; ESPE-PES-SLEP-JSPE-APEG-APPES-ISPAE; Congenital Hypothyroidism Consensus Conference Group. European Society for Paediatric Endocrinology consensus guidelines on screening, diagnosis, and management of congenital hypothyroidism. J Clin Endocrinol Metab. 2014 Feb;99(2):363-84. doi: 10.1210/jc.2013-1891. Epub 2014 Jan 21.

    PubMed 24446653
  • American Academy of Pediatrics; Rose SR; Section on Endocrinology and Committee on Genetics, American Thyroid Association; Brown RS; Public Health Committee, Lawson Wilkins Pediatric Endocrine Society; Foley T, Kaplowitz PB, Kaye CI, Sundararajan S, Varma SK. Update of newborn screening and therapy for congenital hypothyroidism. Pediatrics. 2006 Jun;117(6):2290-303. doi: 10.1542/peds.2006-0915.

    PubMed 16740880
  • Ng SM, Anand D, Weindling AM. High versus low dose of initial thyroid hormone replacement for congenital hypothyroidism. Cochrane Database Syst Rev. 2009 Jan 21;2009(1):CD006972. doi: 10.1002/14651858.CD006972.pub2.

    PubMed 19160309
  • Esposito A, Vigone MC, Polizzi M, Wasniewska MG, Cassio A, Mussa A, Gastaldi R, Di Mase R, Vincenzi G, Pozzi C, Peroni E, Bravaccio C, Capalbo D, Bruzzese D, Salerno M. Effect of initial levothyroxine dose on neurodevelopmental and growth outcomes in children with congenital hypothyroidism. Front Endocrinol (Lausanne). 2022 Sep 5;13:923448. doi: 10.3389/fendo.2022.923448. eCollection 2022.

    PubMed 36133316

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Levothyroxin in people with Congenital Hypothyroidism, run by Federico II University.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 May 2022. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Neurodevelopmental outcomes (time frame: At four years of age). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05371262, which also lists 4 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 May 2022.

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