查看“M6620”的源代码

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            <strong>M6620</strong>（通用名：Berzosertib，原研发代号：VX-970）是由德国默克（Merck KGaA）开发的一款强效、高选择性、<strong>静脉注射型</strong>（IV）<strong>[[ATR激酶]]</strong>抑制剂。作为全球首个进入临床阶段的 ATR 抑制剂，M6620 完成了该靶点的“概念验证”（Proof of Concept），证实了阻断 ATR-CHK1 通路可显著增强化疗药物（如吉西他滨、顺铂）的抗肿瘤活性，特别是在 <strong>[[ATM]] 缺失</strong>或高复制压力的肿瘤中。尽管 M6620 展现了积极的疗效，但由于静脉给药的局限性，默克目前的研发重心已转向其第二代<strong>口服</strong> ATR 抑制剂 <strong>[[Tuvusertib]] (M1774)</strong>。
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            <div style="font-size: 1.2em; font-weight: bold; letter-spacing: 1.2px;">M6620</div>
            <div style="font-size: 0.7em; opacity: 0.85; margin-top: 4px; white-space: nowrap;">Berzosertib / VX-970 (点击展开)</div>
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                    [[Image:IV_drug_administration_concept.jpg|100px|静脉给药：M6620的主要特征]]
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                <div style="font-size: 0.8em; color: #64748b; margin-top: 12px; font-weight: 600;">状态：一代 ATRi (静脉)</div>
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                    <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0; width: 40%;">通用名</th>
                    <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">[[Berzosertib]]</td>
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                    <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">研发企业</th>
                    <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #1e40af;">[[Merck KGaA]] (引进自Vertex)</td>
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                    <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">靶点</th>
                    <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #0f172a;">ATR Kinase</td>
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                    <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">剂型</th>
                    <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #b91c1c;"><strong>静脉输注 (IV)</strong></td>
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                    <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569; border-bottom: 1px solid #e2e8f0;">继任者</th>
                    <td style="padding: 6px 12px; border-bottom: 1px solid #e2e8f0; color: #16a34a;">[[Tuvusertib]] (M1774)</td>
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                    <th style="text-align: left; padding: 6px 12px; background-color: #f1f5f9; color: #475569;">关键试验</th>
                    <td style="padding: 6px 12px; color: #0f172a;">NCI 卵巢癌 II 期</td>
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    <h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">从 M6620 到 M1774：默克的 ATR 接力</h2>
    
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        M6620 是 ATR 抑制剂领域的“开路先锋”，但其药学特性限制了其商业化潜力。默克（Merck KGaA）的策略调整反映了该类药物的进化方向：
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                <th style="padding: 12px; border: 1px solid #cbd5e1; color: #0f172a; width: 25%;">特征</th>
                <th style="padding: 12px; border: 1px solid #cbd5e1; color: #475569;">第一代：M6620 (Berzosertib)</th>
                <th style="padding: 12px; border: 1px solid #cbd5e1; color: #1e40af;">第二代：M1774 (Tuvusertib)</th>
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                <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">给药途径</td>
                <td style="padding: 10px; border: 1px solid #cbd5e1;"><strong>静脉 (IV)</strong><br>患者需住院或门诊输液，依从性低。</td>
                <td style="padding: 10px; border: 1px solid #cbd5e1; background-color: #dcfce7; color: #16a34a; font-weight: bold;">口服 (Oral)<br>居家服用，适合长期维持治疗。</td>
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                <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">药代动力学</td>
                <td style="padding: 10px; border: 1px solid #cbd5e1;">半衰期短，体内浓度波动大。</td>
                <td style="padding: 10px; border: 1px solid #cbd5e1;">生物利用度高，稳态浓度维持更好。</td>
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                <td style="padding: 10px; border: 1px solid #cbd5e1; font-weight: 600;">战略定位</td>
                <td style="padding: 10px; border: 1px solid #cbd5e1;">化疗增敏（联合 Gem/Cis）。</td>
                <td style="padding: 10px; border: 1px solid #cbd5e1;">合成致死（单药）及新型联合（PARPi/IO）。</td>
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    <h2 style="background: #f1f5f9; color: #0f172a; padding: 10px 18px; border-radius: 0 6px 6px 0; font-size: 1.25em; margin-top: 40px; border-left: 6px solid #0f172a; font-weight: bold;">M6620 的临床遗产</h2>
    
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        <h3 style="margin-top: 0; color: #1e40af; font-size: 1.1em;">定义了“高复制压力”人群</h3>
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            M6620 的临床试验首次证实了：<strong>无 PARP 抑制剂治疗史</strong>（即 PARP-naïve）的卵巢癌患者，对 ATR 抑制剂更敏感。这是因为这类肿瘤往往保留了高水平的复制压力（Replication Stress），是 ATR 抑制剂的最佳攻击目标。
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        <li style="margin-bottom: 12px;"><strong>卵巢癌：</strong> 联合吉西他滨显著改善了铂耐药患者的 PFS (HR 0.57)。</li>
        <li style="margin-bottom: 12px;"><strong>小细胞肺癌 (SCLC)：</strong> 联合拓扑替康在铂难治患者中观察到了 30% 的缓解率，验证了 SCLC (TP53/RB1 缺失) 对 ATR 抑制的易感性。</li>
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        <span style="color: #0f172a; font-weight: bold; font-size: 1.05em; display: inline-block; margin-bottom: 15px;">学术参考文献 [Academic Review]</span>
        
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            [1] <strong>Konstantinopoulos PA, et al. (2020).</strong> <em>Berzosertib plus gemcitabine versus gemcitabine alone in platinum-resistant high-grade serous ovarian cancer.</em> <strong>[[The Lancet Oncology]]</strong>. <br>
            <span style="color: #475569;">[点评]：确立了 M6620 历史地位的研究，证明了 ATR 抑制剂在临床上确实有效，鼓舞了后续口服药物的开发。</span>
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            [2] <strong>Thomas, A. et al. (2018).</strong> <em>Phase I Study of ATR Inhibitor M6620 in Combination With Topotecan in Patients With Advanced Solid Tumors.</em> <strong>[[Journal of Clinical Oncology]]</strong>. <br>
            <span style="color: #475569;">[点评]：探索了与拓扑异构酶抑制剂的联合，特别是在小细胞肺癌中展示了令人鼓舞的持久缓解。</span>
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            [3] <strong>Merck KGaA. (2021).</strong> <em>Strategic Update on DNA Damage Response (DDR) Portfolio.</em> <strong>[[Pipeline Report]]</strong>. <br>
            <span style="color: #475569;">[点评]：默克内部管线调整报告，标志着资源从 M6620 正式向 M1774 (Tuvusertib) 倾斜。</span>
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            M6620 · 知识图谱
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                <td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle;">前身代号</td>
                <td style="padding: 10px 15px; color: #334155;">[[VX-970]] (Vertex)</td>
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                <td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle;">家族接力</td>
                <td style="padding: 10px 15px; color: #334155;">[[Tuvusertib]] (M1774, 二代) • [[Peposertib]] (DNA-PK)</td>
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                <td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle;">核心机制</td>
                <td style="padding: 10px 15px; color: #334155;">[[化疗增敏]] • [[合成致死]] • [[复制叉崩塌]]</td>
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                <td style="width: 85px; background-color: #f8fafc; color: #334155; font-weight: 600; padding: 10px 12px; text-align: right; vertical-align: middle;">适应症</td>
                <td style="padding: 10px 15px; color: #334155;">[[卵巢癌]] • [[小细胞肺癌]] • [[神经内分泌瘤]]</td>
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