Tazemetostat hydrobromide
目录号 : GC38163
Tazemetostat hydrobromide (EPZ-6438 hydrobromide) 是一种有效，选择性，口服的 EZH2 抑制剂。Tazemetostat hydrobromide 抑制含有 PRC2 复合体的野生型 EZH2 的活性， Ki 值为 2.5±0.5 nM。Tazemetostat hydrobromide 抑制 EZH2，在肽测定和核小体测定中 IC50 分别为 11 和 16 nM。Tazemetostat hydrobromide 抑制大鼠 EZH2，IC50 为 4 nM。Tazemetostat hydrobromide 还抑制 EZH1，IC50 为 392 nM。
Cas No.:1467052-75-0
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Tazemetostat hydrobromide (EPZ-6438 hydrobromide) is a potent, selective and orally available EZH2 inhibitor. Tazemetostat hydrobromide inhibits the activity of human polycomb repressive complex 2 (PRC2)-containing wild-type EZH2 with a Ki value of 2.5 nM. Tazemetostat hydrobromide inhibits EZH2 with IC50s of 11 and 16 nM in peptide assay and nucleosome assay, respectively. Tazemetostat hydrobromide inhibits Rat EZH2 with an IC50 of 4 nM. Tazemetostat hydrobromide also inhibits EZH1 with an IC50 of 392 nM.
Tazemetostat (EPZ-6438) inhibits multi wild-type and mutant lymphoma cell lines proliferation with IC50s of 0.49 nM-7.6 μM[1]. Cell Proliferation Assay[1] Cell Line: Wild-type and mutant lymphoma cell lines: DOHH-2 cell (EZH2 wild-type), Farage cell (EZH2 wild-type), OCI-LY19 cell (EZH2 wild-type), Toledo cell (EZH2 wild-type), KARPAS-422 (EZH2 Y646N), Pfeiffer (EZH2 A682G), RL cell line (EZH2 Y646N), SU-DHL-10 (EZH2 Y646F), SU-DHL-6 (EZH2 Y646N), WSU-DLCL2 (EZH2 Y646F)
Tazemetostat (EPZ-6438; 250 or 500 mg/kg twice daily for 21-28 days) practically eliminates the fast-growing G401 tumors[1]. Animal Model: SCID mice bearing s.c. G401 xenografts [1]
[1]. Knutson SK, et al. Durable tumor regression in genetically altered malignant rhabdoid tumors by inhibition of methyltransferaseEZH2. Proc Natl Acad Sci U S A. 2013 May 7;110(19):7922-7.
| Cas No. | 1467052-75-0 | SDF | |
| Canonical SMILES | O=C(C1=CC(C2=CC=C(CN3CCOCC3)C=C2)=CC(N(CC)C4CCOCC4)=C1C)NCC5=C(C)C=C(C)NC5=O.[H]Br | ||
| 分子式 | C34H45BrN4O4 | 分子量 | 653.65 |
| 溶解度 | DMSO: 100 mg/mL (152.99 mM) | 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 | 1.5299 mL | 7.6494 mL | 15.2987 mL |
| 5 mM | 0.306 mL | 1.5299 mL | 3.0597 mL |
| 10 mM | 0.153 mL | 0.7649 mL | 1.5299 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。
Tazemetostat for patients with relapsed or refractory follicular lymphoma: an open-label, single-arm, multicentre, phase 2 trial
Lancet Oncol 2020 Nov;21(11):1433-1442.PMID:33035457DOI:10.1016/S1470-2045(20)30441-1.
Background: Activating mutations of EZH2, an epigenetic regulator, are present in approximately 20% of patients with follicular lymphoma. We investigated the activity and safety of Tazemetostat, a first-in-class, oral EZH2 inhibitor, in patients with follicular lymphoma. Methods: This study was an open-label, single-arm, phase 2 trial done at 38 clinics or hospitals in France, the UK, Australia, Canada, Poland, Italy, Ukraine, Germany, and the USA. Eligible patients were adults (≥18 years) with histologically confirmed follicular lymphoma (grade 1, 2, 3a, or 3b) that had relapsed or was refractory to two or more systemic therapies, had an Eastern Cooperative Oncology Group performance status of 0-2, and had sufficient tumour tissue for central testing of EZH2 mutation status. Patients were categorised by EZH2 status: mutant (EZH2mut) or wild-type (EZH2WT). Patients received 800 mg of Tazemetostat orally twice per day in continuous 28-day cycles. The primary endpoint was objective response rate based on the 2007 International Working Group criteria for non-Hodgkin lymphoma, assessed by an independent radiology committee. Activity and safety analyses were done in patients who received one dose or more of Tazemetostat. This study is registered with ClinicalTrials.gov, NCT01897571, and follow-up is ongoing. Findings: Between July 9, 2015, and May 24, 2019, 99 patients (45 in the EZH2mut cohort and 54 in the EZH2WT cohort) were enrolled in the study. At data cutoff for the analysis (Aug 9, 2019), the median follow-up was 22·0 months (IQR 12·0-26·7) for the EZH2mut cohort and 35·9 months (24·9-40·5) for the EZH2WT cohort. The objective response rate was 69% (95% CI 53-82; 31 of 45 patients) in the EZH2mut cohort and 35% (23-49; 19 of 54 patients) in the EZH2WT cohort. Median duration of response was 10·9 months (95% CI 7·2-not estimable [NE]) in the EZH2mut cohort and 13·0 months (5·6-NE) in the EZH2WT cohort; median progression-free survival was 13·8 months (10·7-22·0) and 11·1 months (3·7-14·6). Among all 99 patients, treatment-related grade 3 or worse adverse events included thrombocytopenia (three [3%]), neutropenia (three [3%]), and anaemia (two [2%]). Serious treatment-related adverse events were reported in four (4%) of 99 patients. There were no treatment-related deaths. Interpretation: Tazemetostat monotherapy showed clinically meaningful, durable responses and was generally well tolerated in heavily pretreated patients with relapsed or refractory follicular lymphoma. Tazemetostat is a novel treatment for patients with follicular lymphoma. Funding: Epizyme.
Tazemetostat: First Approval
Drugs 2020 Apr;80(5):513-521.PMID:32166598DOI:10.1007/s40265-020-01288-x.
Tazemetostat (Tazverik™), a first-in-class, small molecule enhancer of zeste homolog 2 (EZH2) inhibitor, received accelerated approval in January 2020 in the USA for the treatment of adults and adolescents aged ≥ 16 years with locally advanced or metastatic epithelioid sarcoma not eligible for complete resection. Developed by Epizyme, in collaboration with Eisai, it is the first therapy to be approved specifically for the treatment of epithelioid sarcoma in the USA. The recommended dosage regimen is 800 mg twice daily, administered orally with or without food, until disease progression or unacceptable toxicity. Tazemetostat is also undergoing clinical development in various countries worldwide for use in several other tumour types, including diffuse large B-cell lymphoma and mesothelioma, with the US FDA accepting a New Drug Application and granting priority review for its use in the treatment of follicular lymphoma. This article summarizes the milestones in the development of Tazemetostat leading to this first approval for the treatment of adults and adolescents aged ≥ 16 years with locally advanced or metastatic epithelioid sarcoma not eligible for complete resection.
Tazemetostat: EZH2 Inhibitor
J Adv Pract Oncol 2022 Mar;13(2):158-163.PMID:35369397DOI:10.6004/jadpro.2022.13.2.7.
Epigenetic regulation is a novel approach to cancer treatment. Inhibition of enhancer of zeste homolog 2 (EZH2) is a method to provide targeted epigenetic regulation. Tazemetostat is a first-in-class targeted epigenetic regulator that specifically inhibits EZH2. This new FDA-approved oral treatment received accelerated approval for patients with hematologic and solid malignancies. Tazemetostat was first approved for patients 16 years and older with metastatic or locally advanced epithelioid sarcoma not eligible for complete resection based on the results of an international open-label phase II basket trial. Another open-label multicenter phase II trial led to the approval for patients with relapsed or refractory follicular lymphoma with EZH2 mutation who have received at least two prior systemic therapies or patients who have no satisfactory alternative treatment options. Tazemetostat as an oral EZH2 inhibitor provides a new effective and tolerable treatment option for these patients.
Follicular Lymphoma: a Focus on Current and Emerging Therapies
Oncology (Williston Park) 2022 Feb 8;36(2):97-106.PMID:35180337DOI:10.46883/2022.25920946.
Follicular lymphoma (FL) is the most common indolent lymphoma and is characterized by a relapsing and remitting course. In addition to significant biologic heterogeneity, the clinical trajectory for patients is variable, with some being observed for many years, and others having aggressive disease requiring multiple treatment courses. Unfortunately, FL remains incurable, and continues to cause early mortality. Improved understanding of the genetic and immune biology of FL has led to several FDA-approved therapies in the relapsed and refractory setting, including PI3K inhibitors; immunomodulatory agents; the EZH2 inhibitor, Tazemetostat; and anti-CD19 chimeric antigen receptor (CAR) T-cell therapy, axicabtagene ciloleucel. This review outlines the current approach to the diagnosis and treatment of FL with a focus on emerging investigational therapies, including targeted protein inhibitors, antibody-drug conjugates, monoclonal antibodies, bispecific antibodies, and novel combination strategies.
Tazemetostat for advanced epithelioid sarcoma: current status and future perspectives
Future Oncol 2021 Apr;17(10):1253-1263.PMID:33289402DOI:10.2217/fon-2020-0781.
Epithelioid sarcoma (ES) is an aggressive ultra-rare soft-tissue sarcoma marked by SMARCB1/INI1 deficiency. SMARCB1/INI1 deficiency leads to elevated expression of EZH2, a component of polycomb repressive complex 2, which mediates gene silencing by catalyzing H3K27me3. Tazemetostat is an oral, SAM-competitive inhibitor of EZH2, whose blockade prevents the methylation of histone H3K27, thus decreasing the growth of EZH2 mutated or over-expressing cancer cells. Tazemetostat has been approved for the treatment of patients aged 16 years and older with metastatic or advanced ES not eligible for complete resection, based on the positive results of a single-arm Phase II basket study. Tazemetostat though represents a new treatment option for ES patients, although clinical/molecular predictors of response are still to be identified. The combination of Tazemetostat with other drugs like doxorubicin and immunotherapeutic agents is currently under investigation in ES patients.