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Definition

A form of central hypothyroidism, a disorder characterized by sub-optimal thyroid hormone secretion, due to insufficient stimulation by thyrotropin of an otherwise normal thyroid gland. It may be caused by congenital or acquired disorders of the pituitary gland or hypothalamus. CHNG7 is a congenital, autosomal recessive form characterized by normal-to-low T4 and normal-to-high thyrotropin levels, and reduced or absent pituitary responsiveness to thyrotropin-releasing hormone. Patients may exhibit short stature, growth retardation, and delayed bone age, as well as lethargy or fatigue.

Acronym

CHNG7

Synonyms

Thyrotropin-releasing hormone resistance, generalized

Keywords

Congenital hypothyroidism

 
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