Huntington disease (HD) is a well-defined autosomal dominant neurodegenerative 
disease caused by CAG repeat expansions in HD gene. There are a significant 
number of HD cases where this mutation was not found and such cases are named 
HD-like phenotype (HDL). This article reports 48 patients with HDL phenotype. 
Patients were analyzed on the presence of mutations in prion (PrP), ferritin and 
junctophilin-3 (JP-3) genes. None of the patients showed the presence of the 
mutation in analyzed genes. This could suggest that there is some other 
gene/genes where the mutation can cause the disease with clinical features of 
HD.