元喫煙者のリスク適応型肺がんスクリーニング開始年齢
Clara Frick1,2, Lára R Hallsson3, Uwe Siebert3,4,5,6,7,8
1Division of Clinical Epidemiology of Early Cancer Detection, German Cancer Research Center (DKFZ), Heidelberg, Germany.
JAMA network open
|February 3, 2026
まとめ
元喫煙者の肺がんスクリーニングは個別化できます。禁煙からの期間に基づくリスク適応型開始年齢は、重喫煙歴のある個人のスクリーニングを最適化できます。
科学分野:
- 腫瘍学
- 予防医学
- 疫学
背景:
- 米国予防サービス機関(USPSTF)は、50〜80歳で喫煙歴が20パック年以上、禁煙期間が15年以下の個人に肺がん検診を推奨しています。
- 現在のガイドラインでは、禁煙期間に関連する個々のリスクプロファイルに基づいて、元喫煙者のスクリーニングを十分に個別化できていない可能性があります。
研究 の 目的:
- 禁煙期間に基づくリスク適応型スクリーニング開始年齢を定義することにより、個別化された肺がんスクリーニング戦略を開発すること。
- 元重喫煙者の肺がんスクリーニング推奨事項を洗練すること。
主な方法:
- 英国バイオバンク(n = 86,035)の縦断データを利用したコホート研究。
- 分析には、50歳以上の元または現在の重喫煙者(≥20パック年)が含まれました。
- 多変量拡張コックス比例ハザードモデルを使用して、禁煙期間、パック年、年齢、および10年間の肺がん発生率との関連を評価しました。
主要な成果:
- この研究では、禁煙期間のリスク延期期間(RPP)が特定されました。
- RPPは、禁煙期間によって著しく異なり、≤5年で2.7年、6〜10年で6.2年、11〜15年で10.4年、>15年で17.1年でした。
- リスク適応型スクリーニング開始年齢は、現在の喫煙者に対するUSPSTFの推奨年齢である50歳と比較して、53歳から67歳まで範囲が考えられます。
結論:
- この英国バイオバンクの研究は、元重喫煙者のリスク適応型肺がんスクリーニング開始年齢の経験的基盤を提供します。
- 禁煙期間に基づくスクリーニング開始の個別化は、個々の肺がんリスクにより良く一致させることができます。
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