COMBINATION OF MULTIPLE SCLEROSIS AND HEREDITARY OPTICAL LEBER’S NEUROPATHY. CLINICAL CASE

The article discusses a clinical case of demyelinating disease of the central nervous system, multiple sclerosis in combination with Leber’s hereditary optic atrophy of the optic nerve (Harding syndrome). The debut of the disease at the age of 24 in the form of a simultaneous bilateral decrease in vision, with subsequent atrophy of the optic nerves in both eyes. The diagnosis of multiple sclerosis was confi rmed according to the 2017 McDonald criteria, the diagnosis of Leber’s disease was confi rmed by genetic testing. An important point in the diff erential diagnosis was the identifi cation of the G3460A mutation in the ND1 gene and intrathecal synthesis of oligoclonal immunoglobulin G.