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Figure 1:

ROC curve analysis of the α-Klotho and γ-Klotho genes for the diagnosis of DTC versus goiter.
ROC curve analysis of the α-Klotho and γ-Klotho genes for the diagnosis of DTC versus goiter.

Correlations of the α-Klotho gene expression with γ-Klotho gene expression and with different parameters.

α-Klotho gene expression

Parameter Correlation coefficient p-value
γ-Klotho gene expression −0.065 0.565
Age −0. 233 0.037
BMI −0.210 0.194
Serum total T3 0.084 0.606
Serum total T4 0.101 0.534
Serum TSH −0.258 0.108
Stage −0.346 0. 026
Tumor size −0.898 <0.001

Association between the demographics and the clinicopathological parameters and the two groups of the α-Klotho gene expression.

Parameter α-Klotho gene expression (Fold change) p

High (>0.68) (n=5) Low (≤0.68) (n=35)
Age <45years 4 (80%) 21 (60%) **0.388
45years 1 (20%) 14 (40%)
Sex male 1 (20%) 8 (22.9%) **0.886
female 4 (80%) 27 (77.1%)
BMI (kg/m2) 30.3±5.4 30.3±6.4 *0.988
Tumor size (cm) 0.94±0.4 2.91±0.9 *<0.001
LNM absent 3 (60.0%) 17 (49.0%) **0.633
present 2 (40.0%) 18 (51.0%)
Lateral LNM absent 3 (60.0%) 22 (62.9%) **0.902
present 2 (40.0%) 13 (37.1%)
Lymphovascular permeation absent 4 (80.0%) 20 (57.1%) **0.631
present 1 (20.0%) 15 (42.9%)
Lymphocytic infiltration absent 4 (80.0%) 30 (85.7%) **0.738
present 1 (20.0%) 5 (14.3%)
Extrathyroidal invasion absent 5 (100.0%) 27 (77.1%) **0.232
present 0 (0.0%) 8 (22.9%)
Capsular invasion absent 5 (100.0%) 23 (65.7%) **0.298
present 0 (0.0%) 12 (34.3%)
Multifocality absent 5 (100.0%) 17 (48.6%) **0.031
present 0 (0.0%) 18 (51.4%)
Pathological type papillary 4 (80.0%) 27 (77.1%) **0.525
follicular 1 (20.0%) 8 (22.9%)
Calcification absent 3 (60.0%) 16 (45.7%) **0.550
present 2 (40.0%) 19 (54.3%)
Margin ill-defined 0 (0.0%) 15 (42.9%) **0.137
well-defined 5 (100.0%) 20 (57.1%)
Stage I 5 (100%) 27 (77.1%) **0.699
II 0 (0%) 3 (8.6%)
III 0 (0%) 1 (2.9%)
IVA 0 (0%) 4 (11.4%)

Predictors of higher stage of DTC.

Predictor Adjusted OR (95% CI) p-value
Gender (female) 2.2395(0.747–7.675) 0.142
Serum total T4 1.220(0.956–1.56) 0.110
Serum TSH 0.812(0.587–1.125) 0.211
α-Klotho gene expression 0.671(0.246–0.835) 0.037

Logistic regression analysis to predict the likelihood of DTC on top of goiter.

Parameter Crude OR 95% CI p-value
BMI 0.998 0.99–1.006 0.626
Serum total T3 1.023 0.83–1.26 0.831
Serum total T4 1.004 0.97–1.039 0.836
Serum TSH 1.063 0.95–1.19 0.285
α-Klotho gene expression 0.506 0.343–0.746 0.001
γ-Klotho gene expression 1.059 0.893–0.1.256 0.508

Correlations of the γ-Klotho gene expression with different parameters.

γ-Klotho gene expression

Parameter Correlation coefficient p-value
Age −0.028 0.866
BMI −0.254 0.114
Serum total T3 0.186 0.250
Serum total T4 0.244 0.130
Serum TSH −0.156 0.338
Stage −0.104 0.525
Tumor size −0.089 0.586

Demographic and laboratory parameters of the studied groups.

Parameter Group p value

Case (DTC) (n = 40) Control (goiter) (n = 40)
Age (years) 41.08 ± 11.3 41.08 ± 11.3 *1.000
  Sex:
  Male 9 (22.5%) 9 (22.5%) **1.000
  Female 31 (77.5%) 31 (77.5%)
BMI (kg/m2) 30.30 ± 6.2 33.80 ± 5.4 *0.008
Serum total T3 (μg/dL) 1.27 ± 0.4 1.23 ± 0.3 *0.456
Serum total T4 (μg/dL) 7.24 (6.50–8.25) 7.85 (6.30–8.85) ***0.528
Serum TSH (mIU/L) 1.10 (0.66–1.58) 0.82 (1.03–2.45) ***0.016
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Medicine, Clinical Medicine, Internal Medicine, Haematology, Oncology