Clinical and Genetic Analysis in Congenital Hypothyroidism Due to Thyroid Dysgenesis. (HYPOTYGEN)
Congenital Hypothyroidism
About this trial
This is an interventional diagnostic trial for Congenital Hypothyroidism focused on measuring Congenital hypothyroidism, Thyroid dysgenesis, Genetics, Associated malformations, Psychomotor delay, Mental retardation
Eligibility Criteria
Inclusion Criteria:
- Patient: newborn (0-27 days) or infant (28 days 23 months), or child or adult with congenital hypothyroidism (that is to say with a TSH > 15 mU / ml at screening on filter paper and / or plasma TSH> 10 mU / ml) diagnosed in the first months of life, whatever their age, sex, weight and size.
Subjects with blood levels of free thyroid hormones (FT3 and FT4) in the standards will be described as having subclinical hypothyroidism.
If treatment with L-thyroxine could be stopped without relapse (that is to say, always with a TSH <5 mU / ml with different controls), hypothyroidism is said to be transient, whatever the age of discontinuation of treatment.
- No pre or neonatal goitre by palpation or ultrasound thyroid
- negative perchlorate test (ie decreased rate of iodine captation <10% at 2h injection of perchlorate) when the thyroid gland in place
- No self-immunity known to thyroid in children with and / or his mother (defined by a antithyroperoxidase antibodies and / or antithyroglobulin)
- Signature of free and informed consent by the patient or his legal representative
- Affiliation or enjoying a social security system
Exclusion Criteria:
- Presence of markers antithyroid autoimmunity in children and / or mother (antithyroperoxidase antibodies and / or antithyroglobulin)
- Pre or neonatal goiter on palpation or ultrasound thyroid
- Test positive perchlorate (ie salting rate of iodine> 10% at 2 injection perchlorate)
- Patients of foreign origin returned to their country will be excluded from the study.
Sites / Locations
- Pediatric endocrinology gynecology and diabetology, Hôpital Necker Enfants Malades, Assistance Publique - Hôpitaux de Paris , Université Paris Descartes, INSERM unit U 845
Arms of the Study
Arm 1
Other
hypothyroid group
Clinical exams radiologic exams Blood sample