Taletrectinib
(Synonyms: DS-6051b; AB-106) 目录号 : GC62351
Taletrectinib (DS-6051b, AB-106) is a new-generation selective ROS1/NTRK inhibitor with ic50 of 0.207 nM,0.622 nM,2.28 nM and 0.980 nM for ROS1,NTRK1,NTRK2 and NTRK3,respectively.
Cas No.:1505515-69-4
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
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- Purity: >99.50%
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- SDS (Safety Data Sheet)
- Datasheet
Taletrectinib (DS-6051b, AB-106) is a new-generation selective ROS1/NTRK inhibitor with ic50 of 0.207 nM,0.622 nM,2.28 nM and 0.980 nM for ROS1,NTRK1,NTRK2 and NTRK3,respectively.
DS-6051b inhibited the growth of the CD74-ROS1 overexpressed Ba/F3 cells and the ROS1 fusion-positive HCC78 cancer cell line.DS-6051b potently inhibited autophosphorylation of ROS1 in CD74-ROS1–expressed Ba/F3 cells and the SLC34A2-ROS1 harboring HCC78 cells at approximately single-digit to double-digit nanomolar concentration.[1]
In vivo experiments using the KM12-bearing mouse xenograft model shows that DS-6051b induced tumor shrinkage at a ≥50?mg/kg or higher treatment dose without significant body weight loss.[1]
[1] Katayama R,et al.Nat Commun. 2019 9;10(1):3604.
| Cas No. | 1505515-69-4 | SDF | |
| 别名 | DS-6051b; AB-106 | ||
| 分子式 | C29H34FN5O5 | 分子量 | 551.61 |
| 溶解度 | DMSO : 50 mg/mL (90.64 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.8129 mL | 9.0644 mL | 18.1288 mL |
| 5 mM | 0.3626 mL | 1.8129 mL | 3.6258 mL |
| 10 mM | 0.1813 mL | 0.9064 mL | 1.8129 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
NTRK fusions in lung cancer: From biology to therapy
Lung Cancer 2021 Nov;161:108-113.PMID:34563714DOI:10.1016/j.lungcan.2021.09.005.
Fusions involving TRK protein tyrosine kinases are oncogenic drivers in a variety of tumors in children and adults, with a prevalence of ∼0.2% in non-small cell lung cancer. Diagnosis can be challenging due to structural features such as NTRK intron length, but next-generation sequencing (NGS), including RNA-based NGS, increases detection. The first-generation TRK inhibitors, larotrectinib and entrectinib, have demonstrated clinically meaningful antitumor activity in TRK fusion-positive cancers in a tumor-agnostic fashion and should be considered first-line therapeutic options for TRK fusion-positive lung cancers. Furthermore, the first-generation TRK inhibitors are well tolerated. Care should be taken, however, to monitor on-target adverse events, such as dizziness, weight gain, paresthesias, and withdrawal pain. On-target and off-target mechanisms mediating TRK inhibitor resistance may occur. Next-generation TRK inhibitors, such as selitrectinib, repotrectinib, and Taletrectinib, are available on ongoing clinical trials and address on-target resistance. This review will focus on NTRK fusions and TRK-directed targeted therapy specifically in the context of lung cancer.
TRK inhibitor activity and resistance in TRK fusion-positive cancers in adults
Cancer Genet 2022 Jun;264-265:33-39.PMID:PMC9133157DOI:10.1016/j.cancergen.2022.03.002.
NTRK fusions drive oncogenesis in a variety of adult cancers. The approval of the first-generation TRK inhibitors, larotrectinib and entrectinib, for any cancer with an NTRK fusion represented a focal point in tumor-agnostic drug development. These agents achieve high response rates and durable disease control, and display intracranial activity. The use of these agents has resulted in a deeper understanding of the clinical consequences of TRK inhibition. These on-target side effects include dizziness, weight gain, and withdrawal pain. The study of TRK inhibitor resistance led to the development of next generation drugs, such as selitrectinib, repotrectinib, Taletrectinib, and other agents that maintain disease control against selected acquired kinase domain mutations. This review discusses the clinical efficacy of TRK inhibitors, their safety profiles, and resistance mechanisms with a focus on data in adult cancers.
Efficacy of Taletrectinib (AB-106/DS-6051b) in ROS1+ NSCLC: An Updated Pooled Analysis of U.S. and Japan Phase 1 Studies
JTO Clin Res Rep 2020 Oct 21;2(1):100108.PMID:34589973DOI:10.1016/j.jtocrr.2020.100108.
Introduction: Taletrectinib (AB-106/DS-6051b) is an oral, potent selective ROS1 and pan-NTRK tyrosine kinase inhibitor (TKI). Preclinically, Taletrectinib has activity against ROS1 G2032R solvent-front mutation. Methods: Patients with ROS1+ NSCLC enrolled into two phase 1 studies conducted in United States (U101, NCT02279433) and Japan (J102, NCT02675491) were analyzed for objective response rate (ORR) by the Response Evaluation Criteria in Solid Tumors version 1.1, progression-free survival, and safety. Results: A total of 22 patients with ROS1+ NSCLC out of the total 61 patients enrolled were analyzed. Taletrectinib was given at the oral dose of 400 mg, 600 mg, 800 mg, and 1200 mg once daily and 400 mg twice daily as part of the dose-escalation schema. Data cutoff was August 19, 2020. Median follow-up time for all 22 patients was 14.9 months (95% confidence interval [CI]: 4.1-33.8). A total of 18 patients with ROS1+ were assessable for response. The confirmed ORR for ROS1 TKI-naive patients (N = 9) was 66.7% (95% CI: 35.4-87.9) with a disease control rate of 100% (70.1-100). The confirmed ORR for crizotinib pretreated patients (N = 6) was 33.3% (95% CI: 9.7-70.0) with a disease control rate of 88.3% (95% CI: 443.6-97.0). The median progression-free survival for ROS1 TKI-naive patients (N = 11) was 29.1 months (95% CI: 2.6-not reached) and 14.2 months (95% CI: 1.5-not reached) for crizotinib-refractory only patients (N = 8). The most common treatment-related adverse events were alanine transaminase elevations (72.7%), aspartate transaminase elevations (72.7%), nausea (50.0%), and diarrhea (50.0%). Grade 3 or higher adverse events were alanine transaminase elevations (18.2%), aspartate transaminase (9.1%), and diarrhea (4.5%). Conclusions: Taletrectinib (AB106/DS6051b) has a meaningful clinical activity in patients with advanced ROS1+ NSCLC who are ROS1 TKI-naive or crizotinib-refractory and a manageable safety profile.
TRUST-II: a global phase II study of Taletrectinib in ROS1-positive non-small-cell lung cancer and other solid tumors
Future Oncol 2023 Mar 6.PMID:36877099DOI:10.2217/fon-2022-1059.
Crizotinib and entrectinib have been approved to treat ROS1 fusion-positive (ROS1+) non-small-cell lung cancer. However, unmet needs remain, including treatment of patients with resistance mutations, efficacy in brain metastasis and avoidance of neurological side effects. Taletrectinib was designed to: improve efficacy; overcome resistance to first-generation ROS1 inhibitors; and address brain metastasis while conferring fewer neurological adverse events. All of these features are demonstrated and supported by the interim data from the regional phase II TRUST-I clinical study. Here we describe the rationale and design of TRUST-II, a global phase II study of Taletrectinib in patients with locally advanced/metastatic ROS1+ non-small-cell lung cancer and other ROS1+ solid tumors. The primary end point is confirmed objective response rate. Secondary end points include duration of response, progression-free survival, overall survival and safety. This trial is enrolling patients in North America, Europe and Asia.
High-resolution mass spectrometry-based approach for the identification and profiling of the metabolites of Taletrectinib formed in liver microsomes
Drug Test Anal 2021 Jun;13(6):1118-1126.PMID:33527739DOI:10.1002/dta.3008.
Taletrectinib is a potent, orally active, and selective ROS1/NTRK kinase inhibitor. The aim of this study was to study the metabolism of Taletrectinib in rat, dog, and human liver microsomes. The biotransformation of Taletrectinib was carried out using rat, dog, and human liver microsomes supplemented with nicotinamide adenine dinucleotide phosphate tetrasodium salt (NADPH) and uridine diphosphate glucuronic acid (UDPGA). The microsomal incubations were conducted at 37°C for 60 min. The formed metabolites were identified by ultrahigh performance liquid chromatography coupled to high-resolution tandem mass spectrometry (UHPLC-HRMS) using electrospray ionization in the positive ion mode. They were identified by accurate masses and MS/MS spectra and based on their fragmentation pathways. With UHPLC-HRMS, a total of 10 metabolites including one glucuronide conjugate (M7) were structurally identified. M9 and M10 were unambiguously identified as Taletrectinib alcohol and Taletrectinib ketone, respectively, using reference standards. The phase I metabolic pathways of Taletrectinib involved N-dealkylation, O-dealkylation, oxidative deamination, and oxygenation; the phase II metabolic pathways referred to glucuronidation. The current study investigated the in vitro metabolic fate of Taletrectinib in animals and human species, which would bring us considerable benefits for the subsequent studies focusing on the pharmacological effect and toxicity of this drug.