Trial Outcomes & Findings for FGF-21 Levels and RMR in Children and Adolescents With Hashimoto's Thyroiditis (THYROMETABOL) (NCT NCT02725879)

NCT ID: NCT02725879

Last Updated: 2024-02-20

Results Overview

serum fibroblast growth factor 21 (FGF-21) levels after an overnight fasting

Recruitment status

COMPLETED

Target enrollment

90 participants

Primary outcome timeframe

baseline and 6 months

Results posted on

2024-02-20

Participant Flow

Participant milestones

Participant milestones
Measure
AIT Subclinical Hypothyroid Group
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH), who received standard levothyroxine (LT4) treatment.
Control Group
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Treatment Group).
AIT Euthyroid Group
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Overall Study
STARTED
30
30
30
Overall Study
COMPLETED
30
30
30
Overall Study
NOT COMPLETED
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

FGF-21 Levels and RMR in Children and Adolescents With Hashimoto's Thyroiditis (THYROMETABOL)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH), receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Total
n=90 Participants
Total of all reporting groups
Age, Categorical
<=18 years
30 Participants
n=5 Participants
30 Participants
n=7 Participants
30 Participants
n=5 Participants
90 Participants
n=4 Participants
Age, Categorical
Between 18 and 65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Age, Categorical
>=65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Age, Continuous
10.99 years
STANDARD_DEVIATION 1.85 • n=5 Participants
10.89 years
STANDARD_DEVIATION 2.29 • n=7 Participants
11.01 years
STANDARD_DEVIATION 1.93 • n=5 Participants
10.97 years
STANDARD_DEVIATION 2.02 • n=4 Participants
Sex: Female, Male
Female
18 Participants
n=5 Participants
18 Participants
n=7 Participants
18 Participants
n=5 Participants
54 Participants
n=4 Participants
Sex: Female, Male
Male
12 Participants
n=5 Participants
12 Participants
n=7 Participants
12 Participants
n=5 Participants
36 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
30 Participants
n=5 Participants
30 Participants
n=7 Participants
30 Participants
n=5 Participants
90 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
White
30 Participants
n=5 Participants
30 Participants
n=7 Participants
30 Participants
n=5 Participants
90 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Region of Enrollment
Greece
30 participants
n=5 Participants
30 participants
n=7 Participants
30 participants
n=5 Participants
90 participants
n=4 Participants

PRIMARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" at the 6 month time point. Data have not been collected for the "AIT Euthyroid Group" for the baseline and 6 month time points.

serum fibroblast growth factor 21 (FGF-21) levels after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Fibroblast Growth Factor 21 (FGF-21)
baseline
182.71 pg/mL
Interval 169.32 to 234.55
217.36 pg/mL
Interval 193.6 to 235.21
Fibroblast Growth Factor 21 (FGF-21)
6 months
198.43 pg/mL
Interval 183.86 to 248.42

PRIMARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Resting Metabolic Rate (RMR) per kilogram of body weight per day

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
RMR/Weight/Day
baseline
131.08 kJ/kg/day
Interval 108.62 to 165.1
150.46 kJ/kg/day
Interval 122.09 to 190.58
168.74 kJ/kg/day
Interval 133.26 to 193.51
RMR/Weight/Day
6 months
142.51 kJ/kg/day
Interval 116.61 to 168.53

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Standard Deviation Score (SDS) for Body Mass Index (BMI). The standard deviation is a measure of the amount of variation or spread of a set of values around the mean or average. The mean or average value is given an SDS of "0". A negative SDS indicates that the value is below the average or mean and a positive value means it is above the average or mean. SDS correspond to growth chart percentiles as follow: -2.68 = 0.4th percentile, -2.01 = 2nd percentile, -1.34 = 9th percentile, -0.67 = 25th percentile, 0 (mean or average) = 50th percentile, +0.67 = 75th percentile, +1.34 = 91st percentile, +2.01 = 98th percentile, +2.68 = 99.6th percentile. These percentiles help us understand whether a measurement falls within the normal range for children of the same age and sex. A lower SDS value (closer or lower to -2.68) and a higher SDS value (closer or above +2.68) mean a worst outcome, while a SDS value closer to 0 (mean or average), mean a better outcome.

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
SDS BMI
baseline
0.73 score on a scale
Interval 0.12 to 1.64
0.88 score on a scale
Interval -0.01 to 1.22
0.36 score on a scale
Interval -1.07 to 1.16
SDS BMI
6 months
0.88 score on a scale
Interval 0.1 to 1.5

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Waist Circumference

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
WAIST C.
baseline
67.73 cm
Standard Deviation 9.32
69.33 cm
Standard Deviation 9.99
65.65 cm
Standard Deviation 8.59
WAIST C.
6 months
69.2 cm
Standard Deviation 8.61

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Hip circumference

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
HIP C.
baseline
81.38 cm
Standard Deviation 9.58
80.63 cm
Standard Deviation 10.58
77.41 cm
Standard Deviation 9.69
HIP C.
6 months
81.50 cm
Standard Deviation 14.71

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

mid-upper arm circumference

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
MUAC
baseline
22.00 cm
Interval 20.0 to 25.25
23.00 cm
Interval 20.0 to 25.25
21.00 cm
Interval 19.75 to 23.62
MUAC
6 months
23.00 cm
Interval 22.0 to 26.0

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Body fat percentage (%BF), is the total mass of fat divided by total body mass. The total body fat includes essential body fat and stored body fat.

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
%BF
baseline
24.95 percentage of body fat
Interval 21.15 to 32.07
22.6 percentage of body fat
Interval 18.53 to 31.8
21.65 percentage of body fat
Interval 16.47 to 29.83
%BF
6 months
24.06 percentage of body fat
Interval 19.27 to 31.16

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Fat mass index (FMI) is calculated by dividing the fat weight in kilograms by the height in metres squared.

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
FMI
baseline
4.49 kg/m^2
Interval 3.43 to 7.06
4.42 kg/m^2
Interval 3.17 to 5.98
4.12 kg/m^2
Interval 2.64 to 5.63
FMI
6 months
8.98 kg/m^2
Interval 4.87 to 13.4

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Fat free mass index (FFMI) is calculated by dividing the free fat weight in kilograms by the height in metres squared.

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
FFMI
baseline
14.27 kg/m^2
Interval 13.5 to 14.63
14.66 kg/m^2
Interval 13.43 to 15.31
13.47 kg/m^2
Interval 12.69 to 14.58
FFMI
6 months
24.90 kg/m^2
Interval 18.52 to 31.31

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

thyroid-stimulating hormone (TSH) after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
TSH
baseline
4.82 μIU/L
Interval 3.99 to 9.66
2.40 μIU/L
Interval 1.95 to 3.06
2.63 μIU/L
Interval 2.13 to 3.09
TSH
6 months
4.03 μIU/L
Interval 2.43 to 6.2

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

free triiodothyronine after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
FT3
baseline
5.96 pmol/L
Interval 5.44 to 6.44
6.28 pmol/L
Interval 5.71 to 6.79
6.27 pmol/L
Interval 5.91 to 6.71
FT3
6 months
5.90 pmol/L
Interval 5.22 to 6.21

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

free thyroxine (FT4) after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
FT4
baseline
14.29 pmol/L
Standard Deviation 2.45
15.19 pmol/L
Standard Deviation 1.93
15.19 pmol/L
Standard Deviation 2.57
FT4
6 months
15.70 pmol/L
Standard Deviation 2.45

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

glucose serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Glucose
baseline
4.86 mmol/L
Interval 4.66 to 5.12
4.88 mmol/L
Interval 4.65 to 5.11
4.74 mmol/L
Interval 4.49 to 5.05
Glucose
6 months
4.97 mmol/L
Interval 4.72 to 5.19

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

insulin serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Insulin
baseline
64.58 pmol/L
Interval 46.46 to 86.87
48.12 pmol/L
Interval 37.36 to 81.32
54.65 pmol/L
Interval 33.96 to 81.87
Insulin
6 months
65.07 pmol/L
Interval 47.85 to 87.43

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Total Cholesterol (TC) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
TC
baseline
4.22 mmol/L
Standard Deviation 0.84
3.88 mmol/L
Standard Deviation 0.75
4.22 mmol/L
Standard Deviation 0.69
TC
6 months
4.19 mmol/L
Standard Deviation 0.86

SECONDARY outcome

Timeframe: baseline and 6 month

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

Triglyceride (TG) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
TG
baseline
0.74 mmol/L
Interval 0.52 to 0.89
0.52 mmol/L
Interval 0.45 to 0.65
0.66 mmol/L
Interval 0.56 to 1.02
TG
6 months
0.73 mmol/L
Interval 0.56 to 0.93

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

high-density lipoprotein (HDL) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
HDL
baseline
1.43 mmol/L
Interval 1.18 to 1.65
1.38 mmol/L
Interval 1.23 to 1.63
1.54 mmol/L
Interval 1.24 to 1.99
HDL
6 months
1.46 mmol/L
Interval 1.26 to 1.61

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

low-density lipoprotein (LDL) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
LDL
baseline
2.30 mmol/L
Interval 2.01 to 2.92
2.07 mmol/L
Interval 1.65 to 2.56
2.33 mmol/L
Interval 2.04 to 2.64
LDL
6 months
2.30 mmol/L
Interval 1.93 to 2.82

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

aspartate aminotransferase (AST) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AST
baseline
23.00 IU/L
Interval 19.0 to 25.25
24.50 IU/L
Interval 18.75 to 28.25
27.50 IU/L
Interval 23.75 to 29.0
AST
6 months
22.00 IU/L
Interval 18.0 to 25.0

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

alanine aminotransferase (ALT) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
ALT
baseline
15.00 IU/L
Interval 13.0 to 19.5
14.50 IU/L
Interval 13.0 to 18.0
16.50 IU/L
Interval 13.75 to 19.0
ALT
6 months
15.50 IU/L
Interval 13.75 to 19.25

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

gamma gloutamyltransferase (γ-GT) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
γ-GT
baseline
12.00 IU/L
Interval 10.75 to 15.0
12.00 IU/L
Interval 10.0 to 13.25
12.00 IU/L
Interval 11.0 to 13.25
γ-GT
6 months
11.00 IU/L
Interval 10.0 to 14.0

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

alkaline phosphatase (ALP) serum level after an overnight fasting

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
ALP
baseline
200.00 IU/L
Interval 157.75 to 291.5
217 IU/L
Interval 149.5 to 275.5
217.00 IU/L
Interval 183.25 to 275.0
ALP
6 months
224.50 IU/L
Interval 162.5 to 270.25

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the 6 month time point.

HOMA-IR stands for Homeostatic Model Assessment of Insulin Resistance, using fasting insulin and blood glucose levels after an overnight fastιng. The meaningful part of the acronym is "insulin resistance". It marks for both the presence and extent of any insulin resistance that you might currently express. It is a way to reveal the dynamic between the baseline (fasting) blood sugar and the responsive hormone insulin. Healthy Range: 1.0 (0.5-1.4) Less than 1.0 means you are insulin-sensitive which is optimal. Above 1.9 indicates early insulin resistance. Above 2.9 indicates significant insulin resistance.

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Homeostatic Model Assessment for Insulin Resistance (HOMA-IR)
baseline
1.93 index
Interval 1.39 to 2.72
1.50 index
Interval 1.11 to 2.54
1.62 index
Interval 1.02 to 2.52
Homeostatic Model Assessment for Insulin Resistance (HOMA-IR)
6 months
1.90 index
Interval 1.57 to 2.65

SECONDARY outcome

Timeframe: baseline

Mediterranean diet index (KIDMED) score is a questionnaire used to evaluate adherence to the Mediterranean diet in children and adolescents. The KIDMED assesses how well an individual's dietary habits align with the Mediterranean diet. Scoring System: 16 questions, each associated with a specific value. The total score ranges from -4 to 12. Interpretation: ≤3: Very-low-quality diet. 4-7: Need to improve the food pattern to align with the Mediterranean diet. ≥8: Optimal adherence to the Mediterranean diet. A lower overall score (≤3) mean a worst outcome (adherence); while a higher overall score (≥8) mean a better outcome (adherence).

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Mediterranean Diet Index (KIDMED) Score
6.37 index
Standard Deviation 2.67
5.77 index
Standard Deviation 2.78
5.00 index
Standard Deviation 2.00

SECONDARY outcome

Timeframe: baseline

specific foods frequency consumption based on the KIDMED questionnaire

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
n=30 Participants
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
n=30 Participants
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Mediterranean Diet Index (KIDMED) Analysis
1 Fruit - fruit juice daily
16 Participants
22 Participants
20 Participants
Mediterranean Diet Index (KIDMED) Analysis
Fruits daily >2
7 Participants
13 Participants
12 Participants
Mediterranean Diet Index (KIDMED) Analysis
1 Fresh - cooked vegetable daily
18 Participants
18 Participants
22 Participants
Mediterranean Diet Index (KIDMED) Analysis
Fresh - cooked vegetable daily >1
6 Participants
10 Participants
5 Participants
Mediterranean Diet Index (KIDMED) Analysis
Fish regularly > 2 per week
9 Participants
15 Participants
16 Participants
Mediterranean Diet Index (KIDMED) Analysis
Fast food >1 per week
12 Participants
5 Participants
9 Participants
Mediterranean Diet Index (KIDMED) Analysis
Legumes >1 per week
20 Participants
17 Participants
21 Participants
Mediterranean Diet Index (KIDMED) Analysis
Pasta - rice daily
25 Participants
23 Participants
23 Participants
Mediterranean Diet Index (KIDMED) Analysis
Cereals - grains daily
28 Participants
29 Participants
27 Participants
Mediterranean Diet Index (KIDMED) Analysis
Nuts > 2 times per week
9 Participants
14 Participants
8 Participants
Mediterranean Diet Index (KIDMED) Analysis
Olive oil daily
29 Participants
28 Participants
29 Participants
Mediterranean Diet Index (KIDMED) Analysis
Skipping breakfast
7 Participants
6 Participants
9 Participants
Mediterranean Diet Index (KIDMED) Analysis
Dairy at breakfast
24 Participants
25 Participants
26 Participants
Mediterranean Diet Index (KIDMED) Analysis
Commercial pastries - pastries at breakfast
18 Participants
13 Participants
16 Participants
Mediterranean Diet Index (KIDMED) Analysis
2 Yogurt - cheese servings daily
19 Participants
18 Participants
20 Participants
Mediterranean Diet Index (KIDMED) Analysis
Sweets and candies daily
23 Participants
17 Participants
22 Participants

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the baseline and 6 month time points.

antithyroid peroxidase antibody (Anti-TPOAb) titers

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Anti-TPOAb
6 months
800.00 IU/mL
Interval 73.47 to 1687.2
Anti-TPOAb
baseline
979.50 IU/mL
Interval 135.27 to 2383.72

SECONDARY outcome

Timeframe: baseline and 6 months

Population: Data have not been collected for the "Control Group" and "AIT Euthyroid Group" for the baseline and 6 month time points.

thyroglobulin antibody (Anti-TgAb) titers

Outcome measures

Outcome measures
Measure
AIT Subclinical Hypothyroid Group
n=30 Participants
Children and Adolescents diagnosed with chronic autoimmune thyroiditis (AIT) and subclinical hypothyroidism (SCH) , receiving standard levothyroxine (LT4) treatment.
Control Group
Healthy individuals with no chronic autoimmune thyroiditis (AIT) and normal thyroid function (age- and sex-matched with AIT Subclinical Hypothyroid Group).
AIT Euthyroid Group
Children and Adolescents with chronic autoimmune thyroiditis and euthyroidism (age- and sex-matched with AIT Subclinical Hypothyroid Group).
Anti-TgAb
baseline
283.90 IU/mL
Interval 69.4 to 500.0
Anti-TgAb
6 months
236.20 IU/mL
Interval 87.95 to 500.0

Adverse Events

AIT Subclinical Hypothyroid Group

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Control Group

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

AIT Euthyroid Group

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Professor Assimina Galli-Tsinopoulou

2nd Department of Paediatrics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA University Hospital, 54636 Thessaloniki,

Phone: +302310994802

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place