A New Case of Schindler Disease

• Published in: European journal of case reports in internal medicine Vol. 6; no. 11; p. 001269
• Main Authors: Castro, Ruben García, Pérez, Ana María González, Curto, María Concepción Román, Álvarez, Javier Cañueto, Ferreirós, Alberto Conde, Cuadros, Alex Viñolas, Bueno, David Moyano, Fernández, Antonio Javier Chamorro
• Format: Report
• Language: English
• Published: 01.01.2019
• ISSN: 2284-2594
• DOI: 10.12890/2019_001269

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. LEARNING POINTSSchindler disease is a very rare lysosomal storage disorder.To our knowledge, fewer than 20 cases have been described to date.Consequently, each new case should be reported to enhance understanding of the wide range of presentations.