全エクソーム分子解剖における変異解釈の重要性:集団ベースのケースシリーズ
Garrett W Shanks1, David J Tester1, Jaeger P Ackerman1
1Department of Molecular Pharmacology and Experimental Therapeutics, Windland Smith Rice Sudden Death Genomics Laboratory (G.W.S., D.J.T., J.P.A., M.J.A.).
Circulation
|June 20, 2018
まとめ
完全エクソムの分子解剖は,若者の突然の原因不明の死亡 (SUDY) の遺伝的変異を効果的に検出します. 精密な変異分析は正確な診断と家族のケアに不可欠です.
科学分野:
- 遺伝学
- 心臓病科
- 法医病理学
背景:
- 若者における突然の原因不明の死 (SUDY) は,心臓のチャネル病や心臓筋病に起因する可能性があります.
- SUDYの主要な死後の遺伝子検査方法である.
- SUDY症例における遺伝的変異の解釈は大きな課題を提示しています.
研究 の 目的:
- SUDY症例における病原性変異の特定における全エクソーム分子解剖の有用性を評価する.
- SUDY被害者の遺伝子変異の頻度と種類を評価する.
- 特定された変異の臨床的有効性を決定する.
主な方法:
- SUDYの25例 (1-40歳) の全エクソムの分子解剖を行い,陰性または曖昧な解剖を行った.
- 99の突然死感遺伝子を分析した
- アメリカン・カレッジ・オブ・メディカル・ジェネティクス (American College of Medical Genetics) の病原性評価に関するガイドライン
主要な成果:
- SUDYの被害者の25人中16人 (64%) で,超希少な非同義的な変種27種を特定した.
- 25人中7人 (28%) で病原性または病原性可能性が高い変種が見つかりました.
- 検死結果と相関する25例のうち4例 (16%) で臨床的に対応可能な6つの変種が特定されました.
結論:
- 遺伝子特異的な監視による全エクソーム分子解剖は,SUDYにおける病原性変異の検出に有効である.
- 正確な診断と適切な家族のケアのために 系統的な変異の判断は不可欠です
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