Reference Detail

Ref Type

Journal Article

PMID

(35639513)

Authors

de la Fuente MI, Colman H, Rosenthal M, Van Tine BA, Levacic D, Walbert T, Gan HK, Vieito M, Milhem MM, Lipford K, Forsyth S, Guichard SM, Mikhailov Y, Sedkov A, Brevard J, Kelly PF, Mohamed H, Monga V

Title

Olutasidenib (FT-2102) in patients with relapsed or refractory IDH1-mutant glioma: A multicenter, open-label, phase Ib/II trial.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Neuro-oncology	25	1	2023 Jan 05	146-156	Neuro Oncol

URL

Abstract Text

Olutasidenib (FT-2102) is a highly potent, orally bioavailable, brain-penetrant and selective inhibitor of mutant isocitrate dehydrogenase 1 (IDH1). The aim of the study was to determine the safety and clinical activity of olutasidenib in patients with relapsed/refractory gliomas harboring an IDH1R132X mutation.This was an open-label, multicenter, nonrandomized, phase Ib/II clinical trial. Eligible patients (≥18 years) had histologically confirmed IDH1R132X-mutated glioma that relapsed or progressed on or following standard therapy and had measurable disease. Patients received olutasidenib, 150 mg orally twice daily (BID) in continuous 28-day cycles. The primary endpoints were dose-limiting toxicities (DLTs) (cycle 1) and safety in phase I and objective response rate using the Modified Response Assessment in Neuro-Oncology criteria in phase II.Twenty-six patients were enrolled and followed for a median 15.1 months (7.3‒19.4). No DLTs were observed in the single-agent glioma cohort and the pharmacokinetic relationship supported olutasidenib 150 mg BID as the recommended phase II dose. In the response-evaluable population, disease control rate (objective response plus stable disease) was 48%. Two (8%) patients demonstrated a best response of partial response and eight (32%) had stable disease for at least 4 months. Grade 3‒4 adverse events (≥10%) included alanine aminotransferase increased and aspartate aminotransferase increased (three [12%], each).Olutasidenib 150 mg BID was well tolerated in patients with relapsed/refractory gliomas harboring an IDH1R132X mutation and demonstrated preliminary evidence of clinical activity in this heavily pretreated population.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References
IDH1 R132X	brain glioma	predicted - sensitive	Olutasidenib	Phase Ib/II	Actionable	In a Phase Ib/II trial, Rezlidhia (olutasidenib) treatment was well tolerated and did not meet the primary endpoint, with an objective response rate of 8% (2/25, both partial responses) but led to a disease control rate of 48% (12/25) in patients with glioma harboring IDH1 R132H (n=22), R132L (n=2), R132C (n=1), or R132G (n=1) (PMID: 35639513; NCT04380012).	35639513