GDC-0834 - CAS 1133432-46-8
Catalog number: 1133432-46-8
Category: Inhibitor
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GDC-0834 is a potent and selective inhibitor of Bruton's tyrosine kinase (BTK), investigated as a potential treatment for rheumatoid arthritis. In vitro metabolite identification studies in hepatocytes revealed predominant formation of an inactive metabolite (M1) via amide hydrolysis in human.
GDC-0834; GDC0834; GDC 0834
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1.Potent and selective Bruton's tyrosine kinase inhibitors: discovery of GDC-0834.
Young WB1, Barbosa J2, Blomgren P2, Bremer MC1, Crawford JJ1, Dambach D1, Gallion S3, Hymowitz SG1, Kropf JE2, Lee SH2, Liu L1, Lubach JW1, Macaluso J2, Maciejewski P2, Maurer B1, Mitchell SA2, Ortwine DF1, Di Paolo J2, Reif K1, Scheerens H1, Schmitt A2, Bioorg Med Chem Lett. 2015 Mar 15;25(6):1333-7. doi: 10.1016/j.bmcl.2015.01.032. Epub 2015 Feb 7.
SAR studies focused on improving the pharmacokinetic (PK) properties of the previously reported potent and selective Btk inhibitor CGI-1746 (1) resulted in the clinical candidate GDC-0834 (2), which retained the potency and selectivity of CGI-1746, but with much improved PK in preclinical animal models. Structure based design efforts drove this work as modifications to 1 were investigated at both the solvent exposed region as well as 'H3 binding pocket'. However, in vitro metabolic evaluation of 2 revealed a non CYP-mediated metabolic process that was more prevalent in human than preclinical species (mouse, rat, dog, cyno), leading to a high-level of uncertainly in predicting human pharmacokinetics. Due to its promising potency, selectivity, and preclinical efficacy, a single dose IND was filed and 2 was taken in to a single dose phase I trial in healthy volunteers to quickly evaluate the human pharmacokinetics. In human, 2 was found to be highly labile at the exo-cyclic amide bond that links the tetrahydrobenzothiophene moiety to the central aniline ring, resulting in insufficient parent drug exposure.
2.A novel reaction mediated by human aldehyde oxidase: amide hydrolysis of GDC-0834.
Sodhi JK1, Wong S2, Kirkpatrick DS2, Liu L2, Khojasteh SC2, Hop CE2, Barr JT2, Jones JP2, Halladay JS2. Drug Metab Dispos. 2015 Jun;43(6):908-15. doi: 10.1124/dmd.114.061804. Epub 2015 Apr 6.
GDC-0834, a Bruton's tyrosine kinase inhibitor investigated as a potential treatment of rheumatoid arthritis, was previously reported to be extensively metabolized by amide hydrolysis such that no measurable levels of this compound were detected in human circulation after oral administration. In vitro studies in human liver cytosol determined that GDC-0834 (R)-N-(3-(6-(4-(1,4-dimethyl-3-oxopiperazin-2-yl)phenylamino)-4-methyl-5-oxo- 4,5-dihydropyrazin-2-yl)-2-methylphenyl)-4,5,6,7-tetrahydrobenzo[b] thiophene-2-carboxamide) was rapidly hydrolyzed with a CLint of 0.511 ml/min per milligram of protein. Aldehyde oxidase (AO) and carboxylesterase (CES) were putatively identified as the enzymes responsible after cytosolic fractionation and mass spectrometry-proteomics analysis of the enzymatically active fractions. Results were confirmed by a series of kinetic experiments with inhibitors of AO, CES, and xanthine oxidase (XO), which implicated AO and CES, but not XO, as mediating GDC-0834 amide hydrolysis.
3.Validation and application of a liquid chromatography-tandem mass spectrometric method for the determination of GDC-0834 and its metabolite in human plasma using semi-automated 96-well protein precipitation.
Shin YG1, Jones SA, Murakami SC, Liu L, Wong H, Buonarati MH, Hop CE. Biomed Chromatogr. 2012 Nov;26(11):1444-51. doi: 10.1002/bmc.2716. Epub 2012 Feb 7.
A liquid chromatographic-tandem mass spectrometric (LC-MS/MS) method was developed and validated for the determination of GDC-0834 and its amide hydrolysis metabolite (M1) in human plasma to support clinical development. The method consisted of semi-automated 96-well protein precipitation extraction for sample preparation and LC-MS/MS analysis in positive ion mode using TurboIonSpray® for analysis. D6-GDC-0834 and D6-M1 metabolite were used as internal standards. A linear regression (weighted 1/concentration(2) ) was used to fit calibration curves over the concentration range of 1 - 500 ng/mL for both GDC-0834 and M1 metabolite. The accuracy (percentage bias) at the lower limit of quantitation (LLOQ) was 5.20 and 0.100% for GDC-0834 and M1 metabolite, respectively. The precision (CV) for samples at the LLOQ was 3.13-8.84 and 5.20-8.93% for GDC-0834 and M1 metabolite, respectively. For quality control samples at 3, 200 and 400 ng/mL, the between-run CV was ≤ 7.
4.Significant species difference in amide hydrolysis of GDC-0834, a novel potent and selective Bruton's tyrosine kinase inhibitor.
Liu L1, Halladay JS, Shin Y, Wong S, Coraggio M, La H, Baumgardner M, Le H, Gopaul S, Boggs J, Kuebler P, Davis JC Jr, Liao XC, Lubach JW, Deese A, Sowell CG, Currie KS, Young WB, Khojasteh SC, Hop CE, Wong H. Drug Metab Dispos. 2011 Oct;39(10):1840-9. doi: 10.1124/dmd.111.040840. Epub 2011 Jul 8.
(R)-N-(3-(6-(4-(1,4-dimethyl-3-oxopiperazin-2-yl)phenylamino)-4-methyl-5-oxo-4,5-dihydropyrazin-2-yl)-2-methylphenyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxamide (GDC-0834) is a potent and selective inhibitor of Bruton's tyrosine kinase (BTK), investigated as a potential treatment for rheumatoid arthritis. In vitro metabolite identification studies in hepatocytes revealed predominant formation of an inactive metabolite (M1) via amide hydrolysis in human. The formation of M1 appeared to be NADPH-independent in human liver microsomes. M1 was found in only minor to moderate quantities in plasma from preclinical species dosed with GDC-0834. Human clearance predictions using various methodologies resulted in estimates ranging from low to high. In addition, GDC-0834 exhibited low clearance in PXB chimeric mice with humanized liver. Uncertainty in human pharmacokinetic prediction and high interest in a BTK inhibitor for clinical evaluation prompted an investigational new drug strategy, in which GDC-0834 was rapidly advanced to a single-dose human clinical trial.
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CAS 1133432-46-8 GDC-0834

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