A New Case of Schindler Disease

oleh: Rubén García Castro, Ana María González Pérez, María Concepción Román Curto, Javier Cañueto Álvarez, Alberto Conde Ferreirós, Alex Viñolas Cuadros, David Moyano Bueno, Antonio Javier Chamorro Fernández

Format: Article
Diterbitkan: SMC MEDIA SRL 2019-10-01

Deskripsi

Lysosomal storage disorders (LSDs) are a group of genetic disorders caused by mutations in genes encoding enzymes involved in lysosomal function. Schindler disease is an autosomal recessive, inherited LSD caused by defective or non-existent activity of the enzyme α-N-acetylgalactosaminidase (α-NAGA). To date, three main phenotypes of Schindler disease have been described. We report the case of a 68-year-old man presenting with axonal and demyelinating polyneuropathy, sensorineural hearing loss, chronic lymphoedema, angiokeratoma corporis diffusum and bilateral carpal tunnel syndrome. Genetic testing (PCR) for α-galactosidase revealed the c.577G>T (p.Glu193*) mutation in the NAGA gene, confirming Schindler disease, which is clinically compatible with Kanzaki disease and Schindler disease type II.