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Myo-inositol and Selenium in Indeterminate Thyroid Nodules (TIR3a)

Sponsor: Regina Elena Cancer Institute • ClinicalTrials.gov ID: NCT06736015

Registry updated: 2026-08-26

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Description

Thyroid nodules present a variable risk of malignancy depending on the cytological result obtained from the ultrasound-assisted thyroid fine needle aspiration biopsy. According to the Italian Cytology classification SIAPEC-IAP 2014, the TIR3A nodules are indeterminate nodules with a risk of malignancy lower than 10%. Clinical and instrumental follow-up is recommended in these cases, including repetition of the fine needle aspiration. A study have demonstrate the effect of a six-month treatment with a supplement containing myo-inositol and selenium on the size and elasticity of benign thyroid nodules. Our hypothesis is that the use of this supplement can determine a reduction in the size and consistency of the nodule assessed through ultrasound and elastosonography also in cytologically indeterminate (TIR3A) nodules and that treatment can reduce the cellular proliferation of these nodules assessed by immunocytochemistry. Therefore, we design a prospective randomized pilot study to assess efficacy and safety of myo-inositol and selenium in TIR3a thyroid nosules, comparing treated and untreated patients.

Interventions

Myo-Inositol 600 mg + Selenium 83 mcg (Dietary supplement)
Myo-Inositol 600 mg + Selenium 83 mcg: 1 tablet once a day for 6 months

Eligibility criteria

Inclusion Criteria: * Adult (\>18 years old), * both sexes, * patients presenting thyroid nodules classified as TIR 3A, based on cytological evaluation on sample from the first fine needle aspiration (FNA), * written Informed consent, * Patients with appropriate material for subsequent immunocytochemical analysis of Ki-67 and PCNA Exclusion Criteria: * Patients with diagnosed thyroid malignancies of cytological diagnosis other than TIR3A * pathological levels of the thyroid stimulating hormone (TSH) which required L-Thyroxine treatment starting * pregnancy and/or breastfeeding

Conditions

Thyroid Nodule

Locations

Regina Elena National Cancer Institute — Rome, Italy

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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