MGLL and schizophrenia: Evidence for altered DAGLα, MGLL, or ABHD6 mRNA expression in schizophrenia is mixed: elevated ABHD6 mRNA expression in PFC (Brodmann area 9) has been observed in patients with an illness duration of less than 15 years (49), whereas no differences in MGLL and DAGLα mRNA expression were found in a different cortical region, the DLPFC (Brodmann area 46) of patients with schizophrenia (50).