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Effect of SYK inhibition on gene expression during ivosidenib induced differentiation of IDH1-mutated murine bone marrow cells (OCI-mIDH1/N)

ABSTRACT: Effect of SYK inhibition on gene expression during ivosidenib induced differentiation of IDH1-mutated murine bone marrow cells (OCI-mIDH1/N)

PROVIDER: PRJNA899039 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22215302_1.fastq.gz	Fastqsanger.gz
	SRR22215302_2.fastq.gz	Fastqsanger.gz
	SRR22215303_1.fastq.gz	Fastqsanger.gz
	SRR22215303_2.fastq.gz	Fastqsanger.gz
	SRR22215304_1.fastq.gz	Fastqsanger.gz

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Project description:A phase-1, multi-center study in recurrent non-enhancing gliomas with IDH1 R132H mutation for patients who require surgery. The purpose of this study is to evaluate the suppression of 2-HG (2-hydroxyglutarate) by comparing the concentration of 2-HG in resected tumors from IDH1 mutant glioma subjects following AG-120 or AG-881 treatment with the 2-HG concentration in untreated, control tumors. The safety, tolerability, PK/PD, and anti tumor activity data from the study in subjects with recurrent non-enhancing Grade 2/3 LGG with an IDH1 R132H mutation for whom surgical resection is indicated will identify the recommended dose of AG-120 and AG-881 for future studies in glioma. Vorasidenib and ivosidenib inhibit mutant forms of isocitrate dehydrogenase (mIDH) and have shown preliminary clinical activity against mIDHglioma. We evaluated both agents in a perioperative phase 1 trial to explore the mechanism of action in recurrent low-grade glioma (IGG) and select a molecule for phase 3 testing. Primary end-point was concentration ofD-2-hydroxyglutarate (2-HG), the metabolic product of mIDH enzymes, measured in tumor tissue from 49 patients with mIDH1-R132H nonenhancing gliomas following randomized treatment with vorasidenib (50 mg or 10 mg once daily, q.d.), ivosidenib (500 mg q.d. or 250 mg twice daily) or no treatment before surgery. Tumor 2-HG concentrations were reduced by 92.6% (95% credible interval (CrI), 76.1–97.6) and 91.1% (95% CrI, 72.0–97.0) in patients treated with vorasidenib 50 mg q.d. and ivosidenib 500 mg q.d., respectively. Both agents were well tolerated and follow-up is ongoing. In exploratory analyses, 2-HG reduction was associated with increased DNA 5-hydroxymethylcytosine, reversal of ‘proneural’ and ‘stemness’ gene expression signatures, decreased tumor cell proliferation and immune cell activation. Vorasidenib, which showed brain penetrance and more consistent 2-HG suppression than ivosidenib, was advanced to phase 3 testing in patients with mIDHLGGs. Funded by Agios Pharmaceuticals, Inc. and Servier Pharmaceuticals LLC; ClinicalTrials.gov number NCT03343197.

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Effect of SYK inhibition on gene expression during ivosidenib induced differentiation of IDH1-mutated murine bone marrow cells (OCI-mIDH1/N)

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