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  • Author: Simona Censi x
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Lara Naletto, Anna Chiara Frigo, Filippo Ceccato, Chiara Sabbadin, Riccardo Scarpa, Fabio Presotto, Miriam Dalla Costa, Diego Faggian, Mario Plebani, Simona Censi, Jacopo Manso, Jadwiga Furmaniak, Shu Chen, Bernard Rees Smith, Stefano Masiero, Francesca Pigliaru, Marco Boscaro, Carla Scaroni and Corrado Betterle

Background

Adrenal cortex autoantibodies (ACAs) and/or 21-hydroxylase (21OHAb) are markers of autoimmune Addison’s disease (AAD) and progression to overt AAD. The reported cumulative risk of developing AAD varies from 0 to 90% in different studies.

Aim

To assess the predictive value of different parameters in the progression toward AAD in patients with ACA and/or 21OHAb-positive patients with autoimmune polyendocrine syndromes (APS).

Materials and methods

Twenty-nine patients with APS-1 and 114 patients with APS-2 or APS-4 were followed up for a median of 10 years (range 6 months to 33 years) and were assessed using ACTH test. The risk of AAD was estimated according to age, gender, stage of adrenal dysfunction, associated diseases and antibody titer. Univariate and multivariate Cox proportional hazard models were used for statistical analysis.

Results

The cumulative risk (CR) of developing AAD was higher in APS-1 patients (94.2%) than in patients with APS-2/APS-4 (38.7%). The CR was high in both male and female APS-1 patients, while in patients with APS-2/APS-4 it was high only in males. Stage 1 (increased plasma renin) for patients with APS-1 and Stage 2 (no response of cortisol to ACTH test) for patients with APS-2/APS-4 were established as the points of no return in the progression to AAD. Adjusted hazard ratio analyses by multivariate Cox model for AAD showed that gender, diseases and adrenal function were independent risk factors for developing clinical AAD. The risk of developing clinical AAD appears to subside after 19 years of follow-up.

Conclusions

A model for estimating the probability to survive free of AAD has been developed and should be a useful tool in designing appropriate follow-up intervals and future therapeutic strategies.

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Simona Censi, Susi Barollo, Elisabetta Grespan, Sara Watutantrige-Fernando, Jacopo Manso, Maurizio Iacobone, Eric Casal Ide, Francesca Galuppini, Ambrogio Fassina, Loris Bertazza, Federica Vianello, Gianmaria Pennelli and Caterina Mian

Objective

Follicular-derived thyroid cancers generally have a good prognosis, but in a minority of cases, they have an aggressive behavior and develop distant metastases, with an increase in the associated mortality. None of the prognostic markers currently available prior to surgery can identify such cases.

Methods

TERT promoter and BRAF gene mutations were examined in a series of 436 consecutive TIR-4 and TIR-5 nodes referred for surgery. Follow-up (median: 59 months, range: 7–293 months) was available for 384/423 patients with malignant nodes.

Results

TERT promoter and BRAF mutations were detected in 20/436 (4.6%) and 257/434 thyroid nodules (59.2%), respectively. At the end of the follow-up, 318/384 patients (82.8%) had an excellent outcome, 48/384 (12.5%) had indeterminate response or biochemical persistence, 18/384 (4.7%) had a structural persistence or died from thyroid cancer. TERT promoter mutations correlated with older age (P < 0.0001), larger tumor size (P = 0.0002), oxyntic and aggressive PTC variants (P = 0.01), higher tumor stages (P < 0.0001), distant metastases (<0.0001) and disease outcome (P < 0.0001). At multivariate analysis, TERT promoter mutation was not an independent predictor of disease outcome. TERT promoter mutation- (OR: 40.58; 95% CI: 3.06–539.04), and N1b lymph node metastases (OR: 40.16, 95% CI: 3.48–463.04) were independent predictors of distant metastases. BRAF mutation did not predict the outcome, and it correlated with a lower incidence of distant metastases (P = 0.0201).

Conclusions

TERT promoter mutation proved an independent predictor of distant metastases, giving clinicians the chance to identify many of the patients who warranted more aggressive initial treatment and closer follow-up.