This week, we continue with the focus on FAST’s 4 Pillars in the Roadmap to a Cure 2.0, highlighting Pillar 3 – Downstream Targets.
Pillars 1 and 2 focus on UBE3A, either fixing mom’s gene or reactivating dad’s copy, while Pillar 3 concentrates more broadly on affected processes that may contribute to symptomology due to the lack of UBE3A expression (and others such as GABR genes) in the brain. Research performed under the banner of Pillar 3 includes all advancements made to address these downstream targets and, in this week’s newsletter, we will feature Dr. Brenda Vincenzi’s Roche update from the 2022 FAST Science Summit on the use of Alogabat in a Phase 2a Angelman syndrome clinical trial.
In her talk, Dr. Vincenzi discussed how AS individuals with the deletion genotype generally present with greater impairments likely due to the loss of additional genes, such as GABR, beyond just UBE3A. GABR genes code for GABAaɑ5 receptors which are important in brain development and function and are linked to many neurodevelopmental disorders and epilepsy. To restore deficient GABAergic signaling, Dr. Vincenzi and her team are utilizing Alogabat, a GABAaɑ5 positive allosteric modulator, that is taken orally once a day and shows acceptable safety margins. They are currently in a Phase 2a open label clinical trial to investigate safety and proof-of-mechanism in children and adolescents with AS deletion genotypes. If effective, they hope to observe improvements particularly in cognitive and seizure measures.
To see more, watch the full video here:
|