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CDK12の不活性化により,前立腺がんの独特の免疫性分類が示される
Yi-Mi Wu1, Marcin Cieślik1, Robert J Lonigro2
1Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA.
Cell
|June 16, 2018
まとめ
転移性離抵抗性前立腺がん (mCRPC) で,CDK12の損失を伴う新しい前立腺がんサブタイプが発見されました. このサブタイプは,遺伝子融合と高濃度のネオアンチゲンによって特徴付けられ,免疫チェックポイント免疫療法に反応する可能性があります.
科学分野:
- 腫瘍学
- ゲノミクス
- 癌 生物学
背景:
- 転移性除抵抗性前立腺がん (mCRPC) は異質な疾患である.
- 分子サブタイプを理解することは ターゲットを絞った治療法にとって重要です
研究 の 目的:
- mCRPC内の新しい分子サブタイプを特定する.
- これらのサブタイプのゲノムと臨床的特徴を特徴づける.
主な方法:
- 360mCRPCサンプルを統合したゲノム分析
- バイアレルCDK12喪失と焦点タンデム重複 (FTD) を含む遺伝的変異の特定
- 遺伝子発現,ネオアンチゲン負荷,腫瘍T細胞浸透の分析
主要な成果:
- 他の既知のドライバーと相互排斥する,バイアレル性CDK12喪失を持つ新しいmCRPCサブタイプが特定されました.
- CDK12の喪失はFTD,遺伝子融合の増加,遺伝子発現の変化と関連しています.
- CDK12変異の腫瘍は,高濃度のネオアンチゲンと,同種の再結合欠乏症の兆候のないT細胞の浸透が増加している.
結論:
- CDK12の不活性化により,独特のmCRPCサブタイプが定義される.
- このサブタイプは独特のゲノム変異と 炎症性腫瘍の微小環境によって特徴付けられます
- CDK12変異のmCRPCは,免疫チェックポイント免疫療法の有望な集団を代表する可能性があります.
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