Claudin18.2 (CLDN18.2) humanized monoclonal antibody(MabSpace Biosciences (Suzhou) Co., Ltd.)、Claudin18.2 monoclonal antibody、Claudin18.2 monoclonal antibody(Mabspace Biosciences)

+ [5]

靶点

CLDN18.2

作用方式

抑制剂

作用机制

CLDN18.2抑制剂(Claudin 18.2蛋白抑制剂)、ADCC(抗体依赖的细胞毒作用)、补体依赖的细胞毒性作用

治疗领域

肿瘤消化系统疾病其他疾病+ [2]

在研适应症

CLDN18.2阳性胃食管交界处腺癌CLDN18.2阳性胃腺癌胃食管交界处腺癌+ [15]

非在研适应症

原研机构

在研机构

+ [1]

非在研机构

复旦大学附属中山医院

权益机构

创胜集团医药有限公司

安捷伦生物（杭州）有限公司

最高研发阶段临床3期

首次获批日期-

最高研发阶段(中国)临床3期

特殊审评孤儿药 (美国)

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结构/序列

Sequence Code 631397381H

来源: *****

Sequence Code 631397382L

来源: *****

关联

项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的临床试验

NCT06093425

/ Not yet recruiting临床3期

A Phase 3, Randomized, Double-blind, Placebo-controlled Study Evaluating Combination of TST001, Nivolumab and Chemotherapy as First-Line Treatment in Subjects With Claudin18.2 Positive Locally Advanced or Metastatic Gastric or Gastroesophageal Junction (Gastric/GEJ) Adenocarcinoma

Gastric/GEJ adenocarcinomas are aggressive tumors with a high probability of death. Current treatment guidelines include two-drug cytotoxic chemotherapy with a fluoropyrimidine (mFOLFOX6: capecitabine or fluorouracil) and a platinum-based agent (CapOx: oxaliplatin or cisplatin). In addition, the FDA has recently approved nivolumab, a PD-1 checkpoint inhibitor, in combination with chemotherapy as first line treatment for advanced or metastatic gastric/GEJ cancer. TST001 is a recombinant humanized monoclonal antibody against Claudin (a tumor marker found in gastric/GEJ cancer. In this study, the combination therapy of chemotherapy or chemotherapy and nivolumab with and without TST001 (a novel recombinant humanized antibody) could provide additional benefits to the management of these tumors.

开始日期2023-10-31

申办/合作机构

苏州创胜医药集团有限公司

NCT05608785

/ Unknown status临床1/2期IIT

Single-center, Multi-cohort Exploratory Phase Ib/II Clinical Study of First-line Treatment of Unresectable Locally Advanced/Advanced Adenocarcinoma of the Stomach or Gastroesophageal Junction Based on Different Genotypes

Abstract Study title: Single-center, Multi-cohort Exploratory Phase Ib/II Clinical Study of First-line Treatment of Unresectable Locally Advanced/Advanced Adenocarcinoma of the Stomach or Gastroesophageal Junction Based on Different Genotypes Protocol No: GC-MATCH Initiator: Henan Cancer Hospital Nature of study Investigator-initiated exploratory study Subjects Advanced first-line gastric cancer or adenocarcinoma of the gastroesophageal junction Objective: To evaluate the efficacy and safety of different first-line treatment options for unresectable locally advanced/advanced gastric or combined gastroesophageal adenocarcinoma with different gene/protein types.
Evaluation criteria: To evaluate the adverse effects of drugs using the NCI CTCAE V5.0 criteria.
RECIST1.1 criteria were used to evaluate drug efficacy Study endpoints: Primary indicators Objective Response Rate (ORR) Secondary indicators 1. drug safety. 2. disease control rate DCR (CR+PR+SD). 3. duration of remission DoR. 4. disease-free survival (PFS) and overall survival time (OS). 5. R0/R1 surgical resection rate Study design: Single-center umbrella clinical trial Planned number of enrollment: Total 39-45 cases Sample size estimation: This is an exploratory study and sample size was not calculated Statistical methods: Selection of data for statistical analysis Full Analysis Set (FAS): The efficacy analysis was performed on all patients who were enrolled and used the drug at least once, according to the principle of intentional analysis (ITT).
Per-protocol Set: Cases with at least one oncologic efficacy assessment, compliance with the trial protocol, good compliance, no prohibited drugs during the trial, and completion of the case report form.
Safety Analysis Set: All patients who had used the trial drug at least once and had a safety record after the drug was administered were enrolled in the Safety Analysis Set.
Statistical analysis plan Validity analysis: for the efficacy index PFS, the Kaplan-Meier method will be used to estimate its median time and column Statistical methods: Out of two-sided 95% confidence intervals. Disease control rate (DCR = CR+PR+SD) and objective remission rate (ORR = CR+PR) were calculated using Fisher exact probability and bilateral 95% confidence intervals were presented.
Safety analysis: descriptive statistical analysis was used to tabulate the AEs that occurred in this trial. laboratory test results were described as normal before the trial but abnormal after treatment and in relation to the trial drug when abnormal changes occurred.
Treatment protocol:
All subjects in this study were first tested for genes/proteins (HER2 protein, HER2FISH, PD-L1 protein 22C3, Claudin18.2, MMR) and received treatment in different groups according to gene/protein expression.
Group 1 HER protein positive 3+ or FISH amplification or HER protein 2+ but FISH amplification Initial treatment (4-6 cycles): IBI315 injection, oxaliplatin, capecitabine Group 2 Claudin18.2 protein-positive Initial treatment (4-6 cycles): PD-L1 monoclonal antibody, TST001 injection, oxaliplatin, capecitabine Group 3 Her protein and Claudin18.2 protein were negative Initial treatment (4-6 cycles): TQB2450 injection, Anrotinib, Oxaliplatin, Capecitabine Patients can undergo radical gastric cancer surgery or radical gastric cancer surgery + local treatment during the maintenance treatment phase if their condition is stable and after in-hospital MDT consultation. The duration of maintenance treatment was 2 years from the time of enrollment.
Principal Investigator: Luo Suxia, Li Ning Group leader unit: Henan Cancer Hospital

开始日期2023-01-01

申办/合作机构

河南省肿瘤医院

NCT05190575

/ Completed临床2期IIT

An Open-label, Single-arm Phase II Study to Evaluate the Efficacy and Safety of TST001 for Patients With CLDN18.2 Positive Previously Treated Unresectable Advanced or Metastatic Biliary Tract Cancer

TST001 is a recombinant humanized anti-Claudin 18.2 (CLDN18.2) IgG1 monoclonal antibody. This is an open-label, single-arm phase II study to evaluate the efficacy and safety of TST001 for patients with CLDN18.2 positive previously treated unresectable advanced or metastatic Biliary Tract Cancer.

开始日期2022-01-14

申办/合作机构

复旦大学附属中山医院

100 项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的临床结果

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100 项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的转化医学

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100 项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的专利（医药）

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项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的文献（医药）

2025-02-01·Journal of Gastrointestinal Oncology

Expression of Claudin18.2 in metastatic lesions in peritoneum of gastric cancer

Article

作者: Sata, Naohiro ; Hosoya, Yoshinori ; Matsumoto, Shiro ; Saito, Shin ; Ohzawa, Hideyuki ; Miyato, Hideyo ; Kawashima, Rie ; Yamaguchi, Hironori ; Saito, Akira ; Kitayama, Joji ; Kurashina, Kentaro

Background:

Patients with advanced gastric cancer (GC) with peritoneal involvement have a dismal prognosis. Recent clinical trials have shown that anti-Claudin18.2 (CLDN18.2) antibody (zolbetuximab) enhances survival in patients with GC expressing high levels of CLDN18.2. However, the effectiveness of the zolbetuximab in patients with peritoneal metastases (PMs) remains unclear. In this study, we aimed to evaluate the expression of CLDN18.2 in disseminated lesions to assess the clinical utility of zolbetuximab in the treatment of GC with PM.

Methods:

In 42 patients diagnosed with stage IV GC with PM, biopsy samples from the primary tumors and peritoneal metastatic nodules were collected and immunostained using the specific antibody (43-14A, Ventana). The expression of CLDN18.2 was comparatively evaluated based on staining intensity and the proportion of positive cells.

Results:

Positive immunoreactivity of CLDN18.2 was observed in 37 (88%) of the primary tumors. Specifically, CLDN18.2 positivity was identified in 26 (62%) or 12 (29%) patients based on moderate to strong membrane staining in at least 40% or 75% of tumor cells, respectively. In comparison, the staining intensity in tumor cells was consistently reduced in PM across all patients. CLDN18.2 expression was absent in PM of 29 (69%) patients, while 3 (7.1%) cases were determined to be CLDN18.2-positive based on a cutoff value of 40% for high staining. This trend was particularly pronounced in cases with undifferentiated type and human epidermal growth factor receptor 2 (HER-2) negative primary tumors.

Conclusions:

Although CLDN18.2 expression in PM mirrored that in primary lesions, the levels were generally reduced. When zolbetuximab is used for GC patients with peritoneal involvement, it is preferable to assess the expression of CLDN18.2 in the disseminated lesions.

2024-08-01·DRUGS

Zolbetuximab: First Approval

Review

作者: Keam, Susan J

Zolbetuximab (VYLOY™), a recombinant, chimeric, anti-claudin 18.2 (CLDN18.2) monoclonal antibody (mAb), is being developed by Astellas Pharma Inc. for the treatment of patients with HER2-negative (HER2^-), CLDN18.2-positive (CLDN18.2⁺) advanced gastric or gastroesophageal junction (GEJ) adenocarcinoma and CLDN18.2⁺ advanced pancreatic adenocarcinoma. In March 2024, zolbetuximab was approved in Japan for the treatment of patients with HER2^-, CLDN18.2⁺ unresectable, advanced/recurrent gastric cancer (the gastric cancer indication includes GEJ cancer). Zolbetuximab is also undergoing regulatory review for HER2^-, CLDN18.2⁺ advanced gastric or GEJ adenocarcinoma in the USA, the EU, China, Australia and several other countries. This article summarizes the milestones in the development of zolbetuximab leading to this first approval for the treatment of patients with CLDN18.2⁺ gastrointestinal malignancies.

2024-04-01·European Journal of Nuclear Medicine and Molecular Imaging

[177Lu]Lu-labeled anti-claudin-18.2 antibody demonstrated radioimmunotherapy potential in gastric cancer mouse xenograft models

Article

作者: Li, Hongjun ; Tao, Jinping ; Zhu, Hua ; Qian, Xueming ; Li, Liqiang ; Liu, Jiayue ; Yang, Zhi ; Zeng, Ziqing

PURPOSE:

Gastric cancer (GC), one of the most prevalent and deadliest tumors worldwide, is often diagnosed at an advanced stage with limited treatment options and poor prognosis. The development of a CLDN18.2-targeted radioimmunotherapy probe is a potential treatment option for GC.

METHODS:

The CLDN18.2 antibody TST001 (provided by Transcenta) was conjugated with DOTA and radiolabeled with the radioactive nuclide ¹⁷⁷Lu. The specificity and targeting ability were evaluated by cell uptake, imaging and biodistribution experiments. In BGC823^CLDN18.2/AGS^CLDN18.2 mouse models, the efficacy of [¹⁷⁷Lu]Lu-TST001 against CLDN18.2-expressing tumors was demonstrated, and toxicity was evaluated by H&E staining and blood sample testing.

RESULTS:

[¹⁷⁷Lu]Lu-TST001 was labeled with an 99.17%±0.32 radiochemical purity, an 18.50 ± 1.27 MBq/nmol specific activity and a stability of ≥ 94% after 7 days. It exhibited specific and high tumor uptake in CLDN18.2-positive xenografts of GC mouse models. Survival studies in BGC823^CLDN18.2 and AGS^CLDN18.2 tumor-bearing mouse models indicated that a low dose of 5.55 MBq and a high dose of 11.10 MBq [¹⁷⁷Lu]Lu-TST001 significantly inhibited tumor growth compared to the saline control group, with the 11.1 MBq group showing better therapeutic efficacy. Histological staining with hematoxylin and eosin (H&E) and Ki67 immunohistochemistry of residual tissues confirmed tumor tissue destruction and reduced tumor cell proliferation following treatment. H&E showed that there was no significant short-term toxicity observed in the heart, spleen, stomach or other important organs when treated with a high dose of [¹⁷⁷Lu]Lu-TST001, and no apparent hematotoxicity or liver toxicity was observed.

CONCLUSION:

In preclinical studies, [¹⁷⁷Lu]Lu-TST001 demonstrated significant antitumor efficacy with acceptable toxicity. It exhibits strong potential for clinical translation, providing a new promising treatment option for CLDN18.2-overexpressing tumors, including GC.

140

项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的新闻（医药）

2025-05-23

·创胜集团Transcenta

创胜集团Osemitamab (TST001)三联疗法一线治疗胃或胃食管结合部腺癌的摘要已公布于ASCO网站

美国新泽西州普林斯顿和中国苏州2025年5月23日-- 创胜集团(06628.HK)，一家具备生物药品发现、研发、工艺开发和生产全流程整合能力的临床阶段的国际生物制药公司宣布，Osemitamab (TST001)联合纳武利尤单抗和CAPOX作为晚期胃或胃食管结合部腺癌(TranStar102)一线治疗的一项正在进行的II期临床G队列更新研究数据摘要已于ASCO网站公布（点击文末左下角阅读原文可直接跳转）。CLDN18.2高/中表达（定义为≥40%肿瘤细胞膜染色强度≥2+）且已知CPS的患者亚组（n=26）的中位无进展生存期（mPFS）为16.6个月，中位总生存期（mOS）数据将在将在美国时间5月31日ASCO年会上公布，敬请期待。Osemitamab (TST001)摘要标题：First-line Osemitamab (TST001) plus Nivolumab and CAPOX for Advanced G/GEJ Cancer (TranStar102): Updated Results of Cohort G from a Phase I/IIa Study Osemitamab (TST001) 联合纳武利尤单抗和CAPOX，作为晚期胃或胃食管结合部腺癌一线治疗（TranStar102）的I/IIa期G队列的更新疗效数据摘要编号：4032报告类型：壁报标题：消化道肿瘤-胃食管、胰腺及肝胆展示时间：2025年5月31日上午9:00-12:00 (美国中部时间)第一作者：龚继芳教授，北京大学肿瘤医院核心要点：● Osemitamab (TST001)是一种高亲和力的靶向CLDN18.2的人源化单克隆抗体，临床前研究显示其可上调CLDN18.2阳性肿瘤细胞的PD-L1表达。在体内模型中，Osemitamab (TST001)联合抗PD-1/PD-L1抗体及化疗的三联疗法抗肿瘤活性显著优于任何双药联合方案（无论PD-L1 CPS水平如何），因此Osemitamab (TST001)联合纳武利尤单抗及CAPOX方案（奥沙利铂+卡培他滨）成为极具潜力的治疗组合。● 截至2025年1月13日，82例患者接受了Osemitamab (TST001)联合纳武利尤单抗及CAPOX治疗（3mg/kg组40例，6mg/kg组42例），中位随访时间21.3个月。82例患者中44例达到经确认的部分缓解，客观缓解率（ORR）为55.7%。抗肿瘤疗效与CLDN18.2表达水平显著相关：在中央实验室经免疫组化确认CLDN18.2高/中表达（定义为≥40%肿瘤细胞膜染色强度≥2+）且已知CPS的患者亚组中（n=26），确认客观缓解率（cORR）达68%，中位无进展生存期（mPFS）为16.6个月（95% CI: 5.8, 21.7）。截至数据截止日，33例患者仍在生存随访中（含12例持续接受治疗者）。全组82例患者的中位总生存期（mOS）为20.4个月（95% CI:15.0, NE）。● 安全性方面，所有患者均发生治疗相关不良事件（TRAEs），安全性特征与既往公布的2024年ESMO数据一致。最常见的TRAEs为可控的"on-target-off-tumor"效应（如恶心、呕吐和低白蛋白血症）。最新研究数据表明，Osemitamab (TST001)联合纳武利尤单抗及CAPOX方案用于G/GEJ癌一线治疗安全性良好、耐受性可控，并显示出持久的PFS和OS获益（尤其在CLDN18.2高/中表达患者中），为晚期患者提供了具有前景的治疗选择。● 最新研究数据表明，Osemitamab (TST001)联合纳武利尤单抗及CAPOX方案用于G/GEJ癌一线治疗安全性良好、耐受性可控，并显示出持久的PFS和OS获益（尤其在CLDN18.2高/中表达患者中），为晚期患者提供了具有前景的治疗选择。Osemitamab (TST001) 是一种高亲和力的靶向CLDN18.2的人源化单克隆抗体，具有增强的抗体依赖性细胞毒性(ADCC)，在异种移植试验中显示出强大的抗肿瘤活性。Osemitamab (TST001) 是全球范围内开发的第二个最先进的CLDN18.2靶向抗体药物，由本公司通过其免疫耐受突破(IMTB)技术平台开发。Osemitamab (TST001) 通过ADCC机制杀死表达CLDN18.2的肿瘤细胞。利用先进的生物加工技术，Osemitamab (TST001) 的岩藻糖含量在生产过程中大大降低，进一步增强了Osemitamab (TST001) 的NK细胞介导的ADCC活性。中国和美国均一直在进行Osemitamab (TST001) 的临床试验(NCT05190575、NCT04396821、NCT04495296、NCT05608785 / CTR20201281)。美国食品和药品监督管理局(FDA)已授予Osemitamab (TST001) 用于治疗胃癌或胃食管结合部腺癌和胰腺癌患者的孤儿药资格认定。创胜集团是一家临床阶段的在生物药发现、研发、工艺开发和生产方面具有全面综合能力的生物制药公司。创胜集团总部位于苏州，已成功搭建了全球的业务布局：在苏州设有药物发现、临床和转化研究中心，在杭州拥有工艺与产品开发中心以及药物生产基地，在中国，美国和欧洲分别设有临床开发中心。创胜集团的开发管线已有十五个治疗用抗体新药分子，涵盖肿瘤、骨科和肾病等领域。如需了解关于创胜集团的更多信息，请访问公司网站：www.transcenta.com 或领英账号：Transcenta。如您想进一步了解我们在研产品线的最新进展，可发送邮件至bd@transcenta.com进行咨询。

临床结果ASCO会议临床2期临床3期

2025-05-01

·药智网

双抗鏖战「癌王」

在癌症的众多类型中，胰腺癌因其极高的恶性程度和治疗难度，被称为“癌王”。国家癌症中心数据显示，2023年全球胰腺癌新发62万例，中国占比20%，同时，胰腺癌的死亡率也非常惊人。中国患者5年生存率仅7.2%，与结直肠癌64%的5年生存率相比，简直是天壤之别。对于胰腺癌患者来说，可手术患者中位OS（总生存期）为22个月，而转移性患者中位OS仅6个月。如此悬殊的预后差异，让胰腺癌成为当之无愧的“生命杀手”。面对胰腺癌这一严峻的挑战，康方生物推出了AK132双抗这一有望攻克“癌王”的重磅产品。AK132作为一种可以同时阻断CLDN18.2和CD47的双特异性抗体，为胰腺癌治疗带来了新的希望。1巨大挑战面对胰腺癌这一强大的敌人，现有的治疗手段显得有些力不从心。化疗作为胰腺癌治疗的重要手段之一，虽然在一定程度上能够延长患者的生存期，但也面临着天花板。改良FOLFIRINOX方案是目前常用的化疗方案之一，其ORR（客观缓解率）为31.6%，但3级AE（不良事件）高达85%。而免疫治疗在胰腺癌的治疗中，更是遭遇了滑铁卢。胰腺癌的微环境就像一个坚固的物理屏障，α-SMA+CAF（α-平滑肌肌动蛋白阳性的癌相关成纤维细胞）占比＞50%，使得免疫细胞难以进入肿瘤内部发挥作用。同时，胰腺癌还具有免疫“冷肿瘤”特征，CD8+T细胞浸润＜5%，这使得免疫治疗难以激活机体的免疫反应，从而对肿瘤细胞进行有效杀伤。免疫治疗在胰腺癌领域的失败，充分证明了胰腺癌微环境的特殊性和复杂性。想要攻克胰腺癌，必须针对其独特的肿瘤微环境和免疫特征进行研发，而双抗药物或许能打破这一僵局。在寻找攻克胰腺癌的道路上，靶点开发也是困难重重。以EGFR抑制剂厄洛替尼为例，虽然它被用于胰腺癌的治疗，但临床研究表明，其OS仅延长12天，几乎可以忽略不计。不过，在黑暗中也总有一丝曙光。Claudin18.2和TGF-β等靶点，为胰腺癌的治疗带来了新的希望。Claudin18.2在胰腺癌中的表达率为58%，这意味着超过一半的胰腺癌患者可能适合以Claudin18.2为靶点的治疗。而TGF-β虽然目前还处于临床前研究阶段，但已有协同证据表明，它可能在胰腺癌的治疗中发挥重要作用。胰腺癌的治疗现状不容乐观，无论是流行病学数据、现有治疗手段，还是靶点开发，都面临着巨大的挑战。在这样的背景下，康方生物的AK132作为一款Claudin18.2/PD-L1双抗，能否成为攻克胰腺癌这座“肿瘤堡垒”的关键武器？2科学突破在2024年肿瘤免疫治疗学会年会上，康方生物首次对外发布了其自主研发的双特异性抗体新药Claudin18.2(CLDN18.2)/CD47双特异性抗体AK132的药物机制研究成果。AK132是一种“1+1”价态的不对称双特异性抗体，可同时靶向和阻断CLDN18.2和CD47，并具有野生型IgG1 Fc结构AK132能够拥有如此出色的性能，离不开康方生物自主开发的Tetrabody平台。该平台赋予了AK132诸多差异化优势，使其在同类竞品中脱颖而出。从亲和力和半衰期等参数对比来看，康方AK132展现出了独特的技术优势。AK132的亲和力（nM）为0.32，相比QLS31905的1.05和安进AMG910的0.68，具有更高的亲和力，它能够更紧密地与靶点结合，从而更有效地发挥作用。在半衰期（h）方面，AK132达到了216，高于QLS31905的189和安进AMG910的156。较长的半衰期使得AK132在体内能够维持更稳定的药物浓度，减少给药频率，提高患者的依从性。图1 AK132结合于CHO-K1-CLDN18.2/CD47细胞图片来源：参考文献1Tetrabody平台还克服了双抗开发过程中的诸多难题，如高分子量导致的低效表达水平、结构异质引起的工艺开发障碍以及缺乏稳定性导致的不可成药性等。基于该平台，康方生物成功开发了多个双抗药物，AK132便是其中的杰出代表。根据PDX模型数据，AK132联合化疗组的肿瘤缩小率较单抗提升3倍。这一结果表明，AK132与化疗药物联合使用时，能够产生协同增效作用，显著提高对肿瘤的抑制效果。在小鼠皮下移植瘤模型中，AK132也有效抑制了肿瘤的发展。它能以高亲和力与人CLDN18.2和人CD47特异性地结合，竞争性地阻断人CD47与配体人SIRPα的结合，介导巨噬细胞对CLDN18.2和CD47双表达细胞的吞噬，从而发挥强大的抗肿瘤作用。图2 AK132可有效抑制带有皮下MC38-hCD47hCLDN18.2肿瘤的小鼠的肿瘤生长图片来源：参考文献1AK132在体外实验中还显示出良好的安全性，几乎不与人红细胞结合，不会促进针对人红细胞的ADCP和ADCC活性，即不会导致红细胞杀伤，且不会引起红细胞凝集，无红细胞毒性。这为其临床应用提供了重要的安全保障。对于AK132的临床试验设计，我们可以做出一些合理的预判。在主要终点的选择上，12个月OS率是一个非常有意义的指标。考虑到胰腺癌患者的预后较差，晚期患者的生存期往往较短，12个月OS率能够直观地反映出AK132对患者生存期的影响。与化疗的历史数据相比，若AK132能够显著提高12个月OS率，那么它将在胰腺癌治疗领域展现出巨大的优势。在患者筛选策略方面，Claudin18.2 IHC 2+/PD-L1 CPS≥1是一个较为合理的标准。Claudin18.2在胰腺癌中的高表达，使其成为一个重要的治疗靶点，而PD-L1的表达则与免疫治疗的疗效密切相关。通过筛选Claudin18.2 IHC 2+/PD-L1 CPS≥1的患者，能够提高AK132在临床试验中的有效性和针对性，从而更准确地评估其治疗效果。3竞争格局分析全球范围内，针对Claudin18.2靶点的药物研发竞争激烈。目前，处于临床阶段的产品众多，包括6款单抗和4款双抗。值得一提的是，安斯泰来的佐妥昔单抗已上市、处于领先地位，而康方生物的AK132作为国内第3款申报临床的Claudin18.2/CD47双抗，在竞争格局中占据着重要的位置。创胜集团的TST001：是一款人源化单克隆抗体新药，它能够通过高亲和力特异性结合Claudin18.2蛋白，介导ADCC和CDC机制，直接靶向杀灭Claudin18.2表达阳性的肿瘤细胞。目前，TST001正在美国及中国进行1期试验，以评估其安全性及耐受性，以及于晚期实体瘤（包括但不限于胃癌及胰腺癌）患者的抗肿瘤活性。奥赛康的ASKB589：是一款人源化Claudin18.2抗体，主要通过ADCC和CDC杀伤肿瘤细胞，拟用于胃及胃食管结合部腺癌、胰腺癌等适应症。2020年4月，该药已在中国获批临床，并已经启动ASKB589注射液在局部晚期或转移性实体瘤患者中安全性、耐受性和有效性临床研究。明济生物的M108：为Claudin 18.2单抗，是明济生物自主研发的针对胃癌等消化系统癌症肿瘤抗原高表达的ADCC增强型单克隆抗体。与常规抗体药物相比，M108单抗注射液充分利用抗体的免疫学抗肿瘤机制，通过增强型的ADCC效应充分调动患者机体的免疫细胞来杀伤肿瘤细胞。除了上述介绍的部分单抗，还有3款处于临床阶段的Claudin18.2双抗：宝船生物的BC007：是一款anti-CLDN18.2/CD47双特异性抗体，目前处于临床I期研究阶段。它同样瞄准了Claudin18.2和CD47这两个热门靶点，期望通过双靶点的协同作用，提高肿瘤治疗的效果。凡恩世的PT886：也是一款处于临床I期研究阶段的anti-CLDN18.2/CD47双特异性抗体。凡恩世在肿瘤免疫治疗领域不断探索创新，PT886的研发是其重要的布局之一。这款双抗通过同时靶向Claudin18.2和CD47，试图打破肿瘤细胞的免疫逃逸机制，激活机体的免疫系统来对抗肿瘤。中生尚健生物的SG1906注射液：同样是一款获批临床的CLDN18.2/CD47双抗。与其他同靶点双抗类似，SG1906通过阻断CLDN18.2和CD47信号通路，有望实现对肿瘤细胞的精准打击和免疫激活。4结语康方生物AK132布局胰腺癌领域，为攻克这一“癌王”带来了新的希望。其创新的双抗设计和临床开发策略，展现出巨大的潜力，有望打破胰腺癌治疗的僵局，为患者带来更有效的治疗方案，在商业上也可能收获丰厚回报。然而，AK132的研发之路并非一帆风顺。Claudin18.2的异质性表达可能会导致疗效波动，这是其面临的一大技术风险。如何克服这一风险，实现更稳定、更有效的治疗效果，是康方生物需要解决的关键问题。在这场与“癌王”的鏖战中，AK132虽然面临着诸多挑战，但也蕴含着无限机遇。期待康方生物能够凭借其创新的技术和不懈的努力，突破重重难关，为胰腺癌患者带来生命的曙光，在全球生物医药领域书写新的传奇。参考资料：1.https://mp.weixin.qq.com/s/DMfos7pCdcQszaCFe-PO3w2.国家癌症中心声明：本内容仅用作医药行业信息传播，为作者独立观点，不代表药智网立场。如需转载，请务必注明文章作者和来源。对本文有异议或投诉，请联系maxuelian@yaozh.com。责任编辑 | 史蒂文合作、投稿、转载开白 | 马老师 18323856316（同微信）阅读原文，是受欢迎的文章哦

免疫疗法

2025-04-25

·创胜集团Transcenta

创胜集团将于ASCO年会公布Osemitamab(TST001)三联疗法一线治疗晚期胃或胃食管连接部癌的I/IIa期更新疗效数据

美国新泽西州普林斯顿和中国苏州，2025年4月25日 -- 创胜集团（06628.HK），一家具备生物药品发现、研发、工艺开发和生产全流程整合能力的临床阶段的生物制药公司，宣布将于2025年美国临床肿瘤学会（ASCO）年会上以壁报形式展示Osemitamab (TST001) 联合纳武利尤单抗与卡培他滨和奥沙利铂，作为晚期胃癌或胃食管连接部癌一线治疗（TranStar102）的I/IIa期G队列的更新研究数据。本届 ASCO 年会将于当地时间2025年5月30日-6月3日在美国芝加哥举办。公布壁报概要如下Osemitamab (TST001)摘要标题：First-line Osemitamab (TST001) plus Nivolumab and CAPOX for Advanced G/GEJ Cancer (TranStar102): Updated Results of Cohort G from a Phase I/IIa StudyOsemitamab (TST001) 联合纳武利尤单抗与卡培他滨和奥沙利铂，作为晚期胃癌或胃食管连接部癌一线治疗（TranStar102）的I/IIa期G队列的更新疗效数据摘要编号：4032报告类型：壁报标题：消化道肿瘤-胃食管、胰腺及肝胆展示时间：2025年5月31日上午9:00-12:00 (美国中部时间)第一作者：龚继芳教授，北京大学肿瘤医院Osemitamab (TST001) 是一种高亲和力的靶向CLDN 18.2的人源化单克隆抗体，具有增强的抗体依赖性细胞毒性（ADCC），在异种移植试验中显示出强大的抗肿瘤活性。Osemitamab (TST001) 是全球范围内开发的第二个最先进的CLDN 18.2靶向抗体药物，由本公司通过其免疫耐受突破(IMTB)技术平台开发。Osemitamab (TST001) 通过ADCC机制杀死表达CLDN 18.2的肿瘤细胞。利用先进的生物加工技术，Osemitamab (TST001) 的岩藻糖含量在生产过程中大大降低，进一步增强了Osemitamab (TST001) 的NK细胞介导的ADCC活性。中国和美国均一直在进行Osemitamab (TST001) 的临床试验(NCT05190575、NCT04396821、NCT04495296、NCT05608785 / CTR20201281)。美国食品和药品监督管理局(FDA)已授予Osemitamab (TST001) 用于治疗胃癌或胃食管结合部腺癌和胰腺癌患者的孤儿药资格认定。创胜集团是一家临床阶段的在生物药发现、研发、工艺开发和生产方面具有全面综合能力的生物制药公司。创胜集团总部位于苏州，已成功搭建了全球的业务布局：在苏州设有药物发现、临床和转化研究中心，在杭州拥有工艺与产品开发中心以及药物生产基地，在中国，美国和欧洲分别设有临床开发中心。创胜集团的开发管线已有十五个治疗用抗体新药分子，涵盖肿瘤、骨科和肾病等领域。如需了解关于创胜集团的更多信息，请访问公司网站：www.transcenta.com 或领英账号：Transcenta。如您想进一步了解我们在研产品线的最新进展，可发送邮件至bd@transcenta.com进行咨询。

ASCO会议临床1期孤儿药临床结果临床2期

100 项与 Claudin18.2 (CLDN18.2)人源化单克隆抗体 (苏州迈博斯) 相关的药物交易

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研发状态

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适应症	最高研发状态	国家/地区	公司	日期
CLDN18.2阳性胃食管交界处腺癌	临床3期	-	苏州创胜医药集团有限公司	2023-10-31
CLDN18.2阳性胃腺癌	临床3期	-	苏州创胜医药集团有限公司	2023-10-31
胃食管交界处腺癌	临床3期	中国	苏州创胜医药集团有限公司	2023-09-01
胃食管交界处腺癌	临床3期	韩国	苏州创胜医药集团有限公司	2023-09-01
胆管癌	临床2期	中国	創勝醫藥集團有限公司	2022-02-28
晚期胆管癌	临床2期	中国	复旦大学附属中山医院	2022-01-14
肺腺癌	临床2期	中国	苏州创胜医药集团有限公司	2020-08-13
结直肠癌	临床2期	中国	苏州创胜医药集团有限公司	2020-08-13
HER2阴性胃食管结合部腺癌	临床2期	中国	苏州创胜医药集团有限公司	2020-08-13
肝癌	临床2期	中国	苏州创胜医药集团有限公司	2020-08-13

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临床结果

适应症

分期

评价

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研究	分期	人群特征	评价人数	分组	结果	评价	发布日期


NCT04495296 (TranStar102, ESMO2024) 人工标引	临床1/2期	晚期胃癌 \| 晚期胃食管交界处腺癌一线 CLDN18.2 \| PD-L1	32	Osemitamab 3mnivolumabvolumab + CAPOX	蓋糧廠願製構鹹衊壓遞(襯廠淵壓壓夢鬱餘膚獵) = All patients experienced treatment-related adverse events (TRAE). The most common TRAE were hypoalbuminaemia, nausea and vomiting, most of them were of CTC AE grade 1 or 2 and manageable. 醖蓋遞顧鏇齋窪選繭構 (製襯膚憲壓繭願構壓構 ) 更多	积极	2024-09-16
				Osemitamab 6mnivolumabvolumab + CAPOX
NCT04495296 (TranStar102, ASCO2024) 人工标引	临床1/2期	胃食管交界处癌 HER2 Negative	82	TST001	簾築築顧鑰夢遞蓋鏇鏇(構壓鹹壓鏇膚膚繭顧鏇) = 鏇醖衊範艱簾鏇遞鏇淵網廠膚選膚夢築鬱獵範 (構遞鑰壓簾窪遞顧鑰廠 ) 更多	积极	2024-05-24
NCT04396821 \| NCT04495296 (Transtar102, ESMO 12023 \| ESMO 22023) 人工标引	临床1/2期	实体瘤 CLDN18.2 Positive	248	osemitamab	築衊憲製衊鹹積糧積選(糧憲獵簾觸範衊鏇簾衊) = Model simulated steady state trough concentration will achieve in vitro ADCC assay EC95 and in vivo MKN45-CLDN18.2 tumor growth inhibition model EC50 in most subjects following 6mg/kg Q3W and 4mg/kg Q2W. 淵衊網製蓋選艱憲繭鏇 (網鑰餘築艱遞衊醖醖鬱 ) 更多	积极	2023-10-23
NCT04495296 (Transtar102, ESMO 12023 \| ESMO 22023) 人工标引	临床1/2期	CLDN18.2阳性胃食管交界处腺癌 \| CLDN18.2阳性胃癌一线 CLDN18.2 positive	64	TST001+capecitabine +oxaliplatin	繭艱鏇鏇窪構蓋鑰鏇艱(獵鹽製築製製鹽積願製) = nausea (70.3%), vomiting (53.1%) and hypoalbuminemia (75%) with grade 3 being 1.6% each 襯積鏇顧餘淵鑰醖鏇鏇 (觸鏇範選蓋艱鏇膚夢鏇 )	积极	2023-10-23
				TST001+capecitabine +oxaliplatin (6 mg/kg in the dose expansion phase)
NCT04495296 (TST001-1002 \| TranStar102, ESMO_GI2023) 人工标引	临床1/2期	晚期癌症一线 CLDN 18.2 Positive	64	osemitamab+CAPOX	獵簾餘夢衊繭簾壓鹹蓋(壓繭夢鏇鑰壓構獵憲範) = Most of them were grade 1 or 2, only one patient experienced grade 3 nausea and vomiting. 齋繭遞膚鬱繭膚蓋蓋遞 (構積顧壓憲鬱願網築構 )	积极	2023-06-30
NCT04495296 (TST001-1002, ASCO 12023 \| ASCO 22023) 人工标引	临床1期	晚期癌症一线	64	Osemitamab+CAPOX	夢艱鏇築製願憲廠廠構(糧範窪觸鑰憲糧壓願衊) = Nausea (65.4%), vomiting (46.2%) and hypoalbuminemia (65.4%) were the most common adverse events related to TST001 at dose of 6mg/kg in 52 patients (3 patients in dose escalation and 49 patients in dose expansion), most of them were grade 1 or 2 (only one patient experienced grade 3 nausea and vomiting, and one experienced grade 3 hypoalbuminemia). 積構廠鏇選構選選願遞 (衊範鹹獵齋鹽蓋淵簾觸 )	积极	2023-05-26
				Osemitamab+CAPOX
NCT04495296 (Corporate Publications) 人工标引	临床1期	胃食管交界处癌一线	26	CAPOX+TST001	繭齋衊窪壓鏇範觸餘選(鏇選鏇糧齋餘積製構齋) = Most are grade 1-2, including nausea, hypoalbuminemia, anemia, vomiting, and elevated AST 積獵壓餘膚網繭積艱鏇 (醖鏇製簾夢積積積壓衊 )	积极	2022-06-02