遺伝子毒性試験ガイドラインからのデータの変動性と不確実性:私たちが知っていること,そしてなぜそれが重要なのか
Giuseppa Raitano1, Tessa E Pronk2, Chiara L Battistelli3
1Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
Archives of toxicology
|February 16, 2026
まとめ
遺伝子毒性試験のデータは有意な変動性を示し,非動物用メソッド (NAM) の統合に影響を与えています. このデータの不確実性を理解することは,規制上の遺伝子毒性評価におけるNAMの検証に不可欠です.
科学分野:
- 毒理学 毒理学 毒理学
- 規制科学 規制科学とは
- コンピュータ生物学 コンピュータ生物学
背景:
- 遺伝子毒性試験ガイドライン (TG) は進化し,データベースのデータ異質性をもたらしました.
- 主要なデータベース (ECVAM,ISSMIC,OASIS) の間で遺伝子毒性に関する呼び出しには大きな変動がある.
研究 の 目的:
- 試験ガイドラインに適合する遺伝子毒性データにおける変動性と不確実性を調べる.
- 非動物用方法 (NAM) を規制の枠組みに統合するための影響を調査する.
- NAMの開発と検証に関する考察を提案する.
主な方法:
- OECDテストガイドラインの過去の修正のレビュー.
- 主要な遺伝子毒性データベース (ECVAM,ISSMIC,OASIS) の分析を行った.
- 変異性を説明する要因を特定するために,EFSAの遺伝子毒性データベースの統計分析.
主要な成果:
- データベースの間で遺伝子毒性呼び出しの実質的な変動が観察されました.
- 化合物の22-77%は,EFSAのデータベースで85%未満の複製結果類似性を示しました.
- 変動性を説明する重要な変数を特定することは,基本的な不確実性を示す実践的な制約によって制限されています.
結論:
- NAMのパフォーマンスを評価する際には,参照データの固有の変動性と不確実性を考慮する必要があります.
- NAMベースのテストと評価のための統合アプローチ (IATA) は,データの変動性を明示的に扱わなければならない.
- このレビューは,遺伝子毒性評価におけるNAMの受け入れと有用性を高めるための基盤を提供します.
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