Study of AG-120 and AG-881 in Subjects With Low Grade Glioma

Servier

Status and phase: Completed; Phase 1

Conditions: Glioma

Treatments: Drug: AG881; Drug: AG-120

Study type: Interventional

Funder types: Other

Identifiers

NCT03343197

AG120-881-C-001

Details and patient eligibility

About

Study to evaluate the suppression of 2-HG (2-hydroxyglutarate) in IDH-1 mutant gliomas in resected tumor tissue following pre-surgical treatment with AG-120 or AG-881.

Full 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 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.

Enrollment: 49 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Be ≥18 years of age.
2. Have histologically or cytologically confirmed recurrent Grade 2 or 3 LGG (oligodendroglioma or astrocytoma according to World Health Organization 2016 classification).
3. Have documented IDH1 R132H gene mutation by local testing and known 1p19q or ATRX mutation status by local testing.
4. Have central confirmation of primarily non-enhancing disease by MRI with less than or equal to 5 mm slice thickness and up to 1 mm interslice gap on either 2D T2 weighted image, 3D T2 weighted image, or FLAIR, with at least 1 non-enhancing tumor measuring 1×1×1 cm.
5. Be candidates for clinical resection but for whom surgery is not urgently indicated (eg, for whom surgery within the next 2-4 months is appropriate).
6. Have KPS of ≥60%
7. Have expected survival of ≥12 months.

Exclusion criteria

1. Have received prior systemic anti-cancer therapy within 1 month of the first dose of AG-120 or AG-881 or have received an investigational agent <14 days prior to their first dose of AG-120 or AG-881. In addition, the first dose of AG-120 or AG-881 should not occur before a period of ≥5 half-lives of the investigational agent has elapsed.
2. Have had radiation within 6 months of the first dose of AG-120 or AG-881. (Note: Prior biopsy or surgery is allowed.)
3. Have received any prior treatment with an IDH inhibitor.
4. Have received any prior treatment with bevacizumab (Avastin).

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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49 participants in 3 patient groups

AG-120

Experimental group

Description:

AG-120 administered continuously as a single agent dosed orally on Days 1 to 28 of a 28-day cycle prior to surgery. Following surgery, subjects will have the option to receive treatment with AG-120 .

Treatment:

Drug: AG-120

AG-881

Experimental group

Description:

AG-881 administered continuously as a single agent dosed orally on Days 1 to 28 of a 28-day cycle prior to surgery. Following surgery, subjects will have the option to receive treatment with AG-881.

Treatment:

Drug: AG881

No Treatment Pre-Surgery

No Intervention group

Description:

Subjects will not receive treatment prior to surgery. Following surgery, subjects will have the option to receive treatment with AG-120 or AG-881.