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Thyroid Function and Structure IN Klinefelter Syndrome — THINKS  

Hypothyroidism Clinical Trial

Official title:
Thyroid Function and Structure IN Klinefelter Syndrome

Clinical Trial Summary

This is a longitudinal retrospective study for the evaluation of thyroid function and structure in patients with Klinefelter syndrome compared to healthy controls and patients affected by chronic lymphocytic thyroiditis.

Clinical Trial Description

This is a longitudinal retrospective study for the evaluation of thyroid function and structure in patients with Klinefelter syndrome compared to healthy controls and patients affected by chronic lymphocytic thyroiditis (CLT). The investigators will retrospectively enroll patients with Klinefelter syndrome followed at the host institution and will retrieve data with regards to peripheral hormone levels (thyroid function) and ultrasonographic appearance (thyroid structure) according to pubertal status and gonadal status. Data will be compared with male age- and pubertal stage-matched euthyroid controls, as well as with male patients affected by CLT. The primary outcome will be the thyroid function compared to healthy controls, by the assessment of peripheral blood TSH, free T3 (fT3) and free T4 (fT4) levels according to pubertal status (pre-pubertal, pubertal and adult subjects) as well as according to gonadal status (eugonadal subjects, hypogonadal subjects and subjects receiving testosterone replacement therapy [TRT]). Secondary Outcome Measures will be: Thyroid function indexes (fT3/fT4 ratio, fT4/TSH ratio, TSH*fT4 product) Quantitative ultrasonographic thyroid structure parameters, comprising: thyroid volume and echogenicity index, as well as the echotexture parameters of homogeneity and entropy evaluated by Gray Levels Co-occurrence Matrices (GLCM). In vitro assay of testosterone and estradiol effects on deiodinase type 2 (DIO2) activity in a rat pituitary cell line. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05581147
Study type Observational
Source University of Roma La Sapienza
Contact
Status Completed
Phase
Start date May 11, 2007
Completion date October 1, 2022
View Details
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