Morie Gertz, MD, Hematologist and Chair of Internal Medicine at Mayo Clinic discussed the current unmet needs in the treatment of hereditary TTR amyloidosis, antisense technology, inotersen, and the NEURO-TTR study.
Patients with hATTR-PN primarily experience nerve damage throughout their body resulting in the progressive loss of motor functions, such as walking. As TTR accumulates in major organs, it progressively impacts organ function and eventually leads to death. Therapeutic options for the treatment of hATTR-PN are very limited and there are currently no drugs approved for the treatment of hATTR-PN in the United States. There are an estimated 10,000 hATTR-PN patients worldwide.
Inotersen was evaluated in a Phase 3 randomized (2:1), double-blind, placebo-controlled, international study in 172 patients with hATTR-PN. The study was designed to support an application for marketing approval of inotersen in patients with hATTR-PN. The 15-month study measured the effects of inotersen on neurological dysfunction and on quality-of-life by measuring the change from baseline in the modified Neuropathy Impairment Score +7 (mNIS+7) and in the Norfolk Quality of Life Questionnaire-Diabetic Neuropathy (Norfolk QOL-DN) total score.
FAP, now referred to as hereditary transthyretin amyloidosis with polyneuropathy (hATTR-PN), is a progressive, debilitating and fatal genetic disease in which patients experience TTR build up in major organs, including peripheral nerves, heart, intestinal tract, kidney and bladder.