JP2016500253A - 上皮成長因子受容体キナーゼドメインにおける新規変異 - Google Patents
上皮成長因子受容体キナーゼドメインにおける新規変異 Download PDFInfo
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Abstract
Description
本発明は、癌診断、及び癌療法のためのコンパニオン診断に関する。特に、本発明は、癌の診断及び予後判定(prognosis)のために、並びに癌治療の有効性を予測するために有用である、変異の検出に関する。
HER1又はErbB1としても知られている上皮成長因子受容体(EGFR)は、成長因子受容体のタイプ1チロシンキナーゼファミリーのメンバーである。それらの膜結合されるタンパク質は、種々のシグナル伝達経路と相五作用する細胞内チロシンキナーゼドメインを有する。リガンド結合に基づいて、このファミリーの受容体は、チロシンキナーゼドメインの二量体化及び続く自己リン酸化を受ける。自己リン酸化は、Ras/MAPK、PI3K 及びAKT経路を包含する細胞内シグナル伝達経路内の一連の事象を誘発する。それらの経路を通して、HERファミリーのタンパク質は、細胞増殖、分化及び生存を調節する。
定義
本開示の理解を促進するために、本明細書に使用される用語の次の定義が提供される。
肺癌患者試料中の変異の同定
組織試料を、肺癌(NSCLC)患者から入手した。試料を、ホルマリン固定された、パラフィン包埋組織(FFPET)として保存した。核酸を試料から単離し、そしてGenome Sequencer FLX装置上で、その製造業者(454 Life Sciences, Branford, Conn./USA)の指示に従って、直接的配列決定にゆだねた。
Claims (14)
- 配列番号1において変異2240_2264>CGAAAGA又は2252_2277>GAGAAGCCを含む核酸と特異的にハイブリダイズする、単離されたオリゴヌクレオチド。
- 天然配列とマッチしない少なくとも1つのヌクレオチドを含む、請求項1に記載のオリゴヌクレオチド。
- 配列番号6〜8及び9〜12から選択される配列と少なくとも90%同一である、請求項2に記載のオリゴヌクレオチド。
- 配列番号6〜8及び9〜12から選択される配列からなる、請求項3に記載のオリゴヌクレオチド。
- 配列番号1において変異2240_2264>CGAAAGAを含む核酸の選択的増幅をプライミングすることはできるが、非変異の配列番号1の選択的増幅をプライミングすることはできない、請求項3に記載のオリゴヌクレオチド。
- 配列番号1において変異2252_2277>GAGAAGCCを含む核酸の選択的増幅をプライミングすることはできるが、非変異の配列番号1の選択的増幅をプライミングすることはできない、請求項3に記載のオリゴヌクレオチド。
- チロシンキナーゼ阻害剤療法に対する癌患者の応答の可能性を決定する方法であって、
(a)患者試料中のEGFR遺伝子における変異2240_2264>CGAAAGA又は2252_2277>GAGAAGCCに関して患者試料を試験し、そして前記変異が存在する場合には、
(b)チロシンキナーゼ阻害剤療法に対して患者が応答する可能性があると決定すること
を含む、前記方法。 - 前記チロシンキナーゼ阻害剤療法が、セツキシマブ、パニツムマブ、エルロチニブ又はゲフェニチブを含む、請求項7に記載の方法。
- 前記試験が、配列番号6〜8及び9〜12から選択される配列と少なくとも90%同一であるオリゴヌクレオチドを使用して行われる、請求項7に記載の方法。
- ステップ(a)において、EGFR遺伝子における以下の変異:G719A、G719C、K745-A750 del K ins、E746V、E746K、L747S、E749Q、A750P、A755V、S768I、L858P、L858R、E746-R748 del、E746-S752 del V ins、L747-E749 del、L747-A750 del P ins、L747-T751 del、L747-T751 del P ins、L747-P753 del S ins、L747-S752 del、R748-P753 del、T751-I759 del T ins、S752-I759 del、P753-K757 del、M766-A767 del AI ins、S768-V769 del SVA ins、G779S、P848L、G857V、L858R、L861Q、L883S、D896Y、2236_2248>ACCC、2237_2244>CGCCC、2252_2277>AC、2240-2264>CGAAAGA、2239_2240 TT>CC、2264 C>A 及びE746-A750 del AP ins、の1つ又は2つ以上に関して、患者の試料をさらに試験し、そして、前記変異のいずれかが存在すると報告される場合、ステップ(b)において、チロシンキナーゼ阻害剤療法に対して患者が応答する可能性があると決定することをさらに含む、請求項7に記載の方法。
- ヒトEGFR遺伝子における変異2240_2264>CGAAAGA又は2252_2277>GAGAAGCCを検出するためのキットであって、配列番号1中の変異2240_2264>CGAAAGA又は2252_2277>GAGAAGCCと特異的にハイブリダイズするが、非変異の配列番号1とはハイブリダイズしない、1つ又は2つ以上のオリゴヌクレオチドを含む、前記キット。
- 配列番号6〜8及び9〜12から選択される配列と少なくとも90%同一であるオリゴヌクレオチドを含む、請求項11に記載のキット。
- 核酸前駆体、核酸ポリメラーゼ、並びに、前記核酸ポリメラーゼの活性を補助するために必要な試薬及び溶液をさらに含む、請求項11に記載のキット。
- 配列番号1における以下の変異:G719A、G719C、K745-A750 del K ins、E746V、E746K、L747S、E749Q、A750P、A755V、S768I、L858P、L858R、E746-R748 del、E746-S752 del V ins、L747-E749 del、L747-A750 del P ins、L747-T751 del、L747-T751 del P ins、L747-P753 del S ins、L747-S752 del、R748-P753 del、T751-I759 del T ins、S752-I759 del、P753-K757 del、M766-A767 del AI ins、S768-V769 del SVA ins、G779S、P848L、G857V、L858R、L861Q、L883S、D896Y、2236_2248>ACCC、2237_2244>CGCCC、2252_2277>AC、2240-2264>CGAAAGA、2239_2240 TT>CC、2264 C>A 及びE746-A750 del AP ins、と特異的にハイブリダイズするが、非変異の配列番号1とはハイブリダイズしない、1つ又は2つ以上のオリゴヌクレオチドをさらに含む、請求項11に記載のキット。
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US61/895,336 | 2013-10-24 | ||
PCT/EP2013/075231 WO2014086707A1 (en) | 2012-12-04 | 2013-12-02 | Novel mutations in the epidermal growth factor receptor kinase domain |
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