細胞学的に不確定な甲状腺結節を有する若年患者における確固たるゲノム配列分類分類器の性能
Luz E Castellanos1, Julian Bryan2, Julio C Ricarte-Filho3
1Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
The Journal of clinical endocrinology and metabolism
|February 12, 2026
まとめ
Afirma Genomic Sequencing Classifier (GSC) は,未定の甲状腺ノードル (ITN) を有する若い患者で高い精度を示しています. この分子テストは,100%の負の予測値を提供し,この年齢層における信頼性を確認しています.
科学分野:
- エンドクリノロジー エンドクリノロジー
- 腫瘍学 腫瘍学
- ゲノミクスゲノミクスとは
背景:
- Afirma Genomic Sequencing Classifier (GSC) は,悪性腫瘍の96%のネガティブ予測値 (NPV) を有する21歳以上の患者向けに確立されています.
- 不確定型甲状腺結節 (ITN) の小児および青少年 (<21歳) 集団におけるAfirma GSCの性能に関する正式な研究は限られている.
研究 の 目的:
- 不確定な甲状腺結節を呈する21歳未満の患者におけるAfirma GSC試験の有効性とパフォーマンスを評価する.
- 若い患者のコホートにおけるAfirma GSCの否定的な予測値と診断精度を評価する.
主な方法:
- Afirma GSCのテストデータを遡及的に分析した.
- 9歳から20歳までの患者からの49の未定の甲状腺結節が含まれていました.
- 結果は,組織病理学または少なくとも2年間の臨床フォローアップによって決定されました.
主要な成果:
- Afirma GSCは,善良な結果に対して100%のネガティブな予測値 (NPV) を示し,すべての30のGSC-Benign (GSC-B) 症例が善良であることが確認されました.
- 悪性腫瘍を検出する感度は100% (14/14 GSC-疑わしい症例は悪性腫瘍),特異性は86% (30/35の良性症例はGSC-B) でした.
- 悪性結節には, papillary thyroid carcinomas, oncocytic carcinoma, follicular thyroid carcinomas,および papillary-like nuclear featuresを持つ非侵襲的な卵泡性甲状腺新生体が含まれていた.
結論:
- Afirma GSCは,若い患者 (21歳未満) の未定型甲状腺結節の評価に役立つ貴重なツールです.
- このテストは優れたネガティブな予測値を示しており,この集団の臨床意思決定においてその使用を支持しています.
- 結果は,成人の集団でのパフォーマンスと比べて高い診断精度を示しています.
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