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Potent and selective pharmacodynamic synergy between the metabotropic glutamate receptor subtype 2–positive allosteric modulator JNJ‐46356479 and levetiracetam in the mouse 6‐Hz (44‐mA) model

We previously demonstrated that positive allosteric modulators (PAMs) of metabotropic glutamate subtype 2 (mGlu2) receptors have potential synergistic interactions with the antiseizure drug levetiracetam (LEV). The present study utilizes isobolographic analysis to evaluate the combined administration of JNJ‐46356479, a selective and potent mGlu2 PAM, with LEV as well as sodium valproate (VPA) and lamotrigine (LTG).