U.S., Feb. 25 -- ClinicalTrials.gov registry received information related to the study (NCT07430046) titled 'Repurposing Mirtazapine in Rett Syndrome' on July 29, 2025.

Brief Summary: Rett Syndrome (RTT) is a rare neurodevelopmental disorder caused by an MECP2 gene mutation on the X chromosome, primarily affecting females. It causes progressive motor and cognitive decline, loss of speech, repetitive hand movements, breathing issues, seizures, and sleep problems. Given RTT's association with reduced monoamine levels, antidepressants like mirtazapine (MTZ) may help.Preclinical studies in MeCP2-mutant mice and early adult RTT trials showed that MTZ improved respiratory, motor, and neurological function, sleep, and mood, prompting this pediatr...