本期看点:
1. 在研口服选择性KRAS G12D抑制剂RNK08954用于治疗KRAS G12D突变转移性非小细胞肺癌(NSCLC)的1期临床试验获积极数据,疾病控制率(DCR)为95.7%。
2. 靶向5T4的抗体药物偶联物(ADC)JK06在5种肿瘤类型中展现治疗潜力,包括NSCLC、乳腺癌、胃癌、宫颈癌后和子宫内膜癌。
RNK08954:公布1期临床试验的初步数据
珃诺生物(Ranok Therapeutics)宣布,其在研口服选择性KRAS G12D抑制剂RNK08954用于治疗KRAS G12D突变转移性NSCLC的1期临床试验获积极数据。RNK08954具有独特的药代动力学特性,旨在实现深层、持续的靶点抑制。RNK08954目前正作为单药及与化疗和/或其他靶向药物联合,针对NSCLC、胰腺导管腺癌(PDAC)及其他实体瘤患者开展临床试验。
此次公布的结果显示,在转移性NSCLC患者队列(N=47)中,RNK08954表现出增强的抗肿瘤活性。在所有测试剂量下,可评估患者的客观缓解率(ORR)为42.6%,DCR为95.7%。在推荐2期剂量(RP2D)下,RNK08954的临床活性增强,未接受过紫杉烷类药物治疗的患者的ORR为50.0%。安全性方面,RNK08954耐受良好,并展现出差异化的安全性特征。
JK06:公布1/2期临床试验的新数据
Salubris Biotherapeutics公司公布了其靶向5T4的抗体药物偶联物JK06用于治疗不可切除的局部晚期或转移性实体瘤的1/2期研究最新数据。JK06是一款潜在“first-in-class”的四价双表位ADC,可选择性靶向在多种实体瘤中高表达的5T4蛋白,并携带MMAE有效载荷。该药物对5T4具有皮摩尔级亲和力,且双表位设计增强了内化作用。
截至2026年5月12日,已有173名患者接受了JK06治疗,5种肿瘤类型的患者获得客观缓解。在可评估的鳞状NSCLC患者中,确认的ORR为35%(4.5 mg/kg剂量组达50%),DCR为94%;在可评估的EGFR突变NSCLC患者中,确认的ORR为43%,DCR为86%。在可评估的激素受体阳性乳腺癌和三阴性乳腺癌患者中,确认的ORR分别为30%和25%,DCR分别为60%和69%。此外,继NSCLC、乳腺癌、胃癌和宫颈癌后,在子宫内膜癌患者中也观察到1例确认的部分缓解(PR)。在安全性方面,JK06总体耐受性良好,治疗相关不良事件多为低级别且可控。
JADE101:公布1期临床试验的中期数据
Jade Biosciences公司宣布,其用于治疗IgA肾病的新型在研抗APRIL单克隆抗体JADE101在1期临床试验中取得积极的中期结果。JADE101采用超高结合亲和力设计,可选择性阻断驱动致病性IgA产生的关键因子APRIL。
该1期试验是一项双盲、安慰剂对照研究,截至2026年4月14日已招募32名健康成人受试者。此次公布的结果显示,单次给药JADE101 700 mg后,IgA水平较基线平均降低70%,且该效果在12周内得以维持。模拟结果显示,在单次700 mg诱导剂量之后,采用每12周一次350 mg的皮下注射维持方案,在稳态下可实现>70%的IgA降低。此外,观察到JADE101展现出比第一代抗APRIL单抗或双靶点抑制剂更快、更深且更持久的IgA降低效果。安全性方面,JADE101在所有评估剂量下均表现出良好的耐受性。
TTX-MC138:公布1a期临床试验的新数据
TransCode Therapeutics公司宣布,其候选疗法TTX-MC138用于治疗转移性癌症的1a期临床试验取得积极进展,并计划推进至2a期临床开发,针对完成根治性治疗后循环肿瘤DNA(ctDNA)呈阳性的结直肠癌患者。TTX-MC138旨在抑制促转移RNA——microRNA-10b,它被认为是多种晚期实体瘤转移的主要调节因子。
该研究达到了主要安全性终点,未观察到剂量限制性毒性。在疗效上,根据RECIST标准评估,14名可评估患者中有9名(64%)实现了至少持续6个月的疾病稳定,其中一名转移性甲状腺癌患者病情已稳定12个月,且其肿瘤标志物(甲状腺球蛋白)水平出现显著下降。目前仍有3名患者继续留在试验中接受治疗。血浆药代动力学分析显示,该药物的生物利用度与早期临床前研究一致。
▲接受TTX-MC138治疗患者的无进展生存率(图片来源:参考资料[21])
参考资料:
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