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Sialic Acid-Binding Immunoglobulin-Like Lectin1 as a Novel Predictive Biomarker for Relapse in Graves’ Disease: A Multicenter Study.

Sialic Acid-Binding Immunoglobulin-Like Lectin1 as a Novel Predictive Biomarker for Relapse in Graves’ Disease: A Multicenter Study.
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Hashimoto K, Nishihara E, Matsumoto M, Matsumoto S, Nakajima Y, Tsujimoto K, Yamakage H, Satoh-Asahara N, Noh JY, Ito K, Miyauchi A, Mori M, Yamada M, Ogawa Y,


Hashimoto K, Nishihara E, Matsumoto M, Matsumoto S, Nakajima Y, Tsujimoto K, Yamakage H, Satoh-Asahara N, Noh JY, Ito K, Miyauchi A, Mori M, Yamada M, Ogawa Y, (click to view)

Hashimoto K, Nishihara E, Matsumoto M, Matsumoto S, Nakajima Y, Tsujimoto K, Yamakage H, Satoh-Asahara N, Noh JY, Ito K, Miyauchi A, Mori M, Yamada M, Ogawa Y,

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Thyroid : official journal of the American Thyroid Association 2017 11 21() doi 10.1089/thy.2017.0244
Abstract
BACKGROUND
There are currently no reliable biomarkers to predict relapse in Graves’ disease (GD). In the present study, we investigated novel diagnostic biomarkers to predict the long-term remission of or relapse in GD.

METHODS
A DNA microarray analysis was performed to examine gene expression in the peripheral leukocytes of a frequently relapsing patient with GD and a patient in long-term remission after the discontinuation of antithyroid drugs (ATDs). Based on the DNA microarray analysis, we focused on Sialic acid-binding immunoglobulin-like lectin1 (SIGLEC1) as a candidate novel biomarker to predict GD relapse. Three hundred and fifty-eight patients with GD in the thyroid clinics of four different hospitals in Japan were included in a cross-sectional study to establish whether SIGLEC1 mRNA levels distinguish GD relapse experience from long-term remission. An additional 55 patients with GD were enrolled in a prospective study to clarify whether SIGLEC1 mRNA levels at ATD discontinuation predict GD relapse.

RESULTS
SIGLEC1 mRNA levels were significantly higher in patients with GD relapse experience than in those in long-term remission. Based on the receiver operating characteristic analysis, we found that high SIGLEC1 mRNA levels (≥258.9 copies) significantly distinguished GD relapse experience from long-term remission (p < 0.0001; sensitivity 66.7%, specificity 70.1%). In the prospective study, when the optimal cutoff value from the receiver operating characteristic curve analysis was applied to SIGLEC1 mRNA positivity at ATD discontinuation, SIGLEC1-positive patients (≥258.9 copies) showed a significantly higher cumulative risk of relapse than SIGLEC1-negative patients (<258.9 copies) (p = 0.022, the log-rank test). CONCLUSIONS
SIGLEC1 mRNA levels have potential as a novel predictive biomarker for GD relapse.

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