Digenic inheritance of STUB1 variants and TBP polyglutamine expansions explains the incomplete penetrance of SCA17 and SCA48

Stefania Magri, Lorenzo Nanetti, Cinzia Gellera, Elisa Sarto, Elena Rizzo, Alessia Mongelli, Benedetta Ricci, Roberto Fancellu, Luisa Sambati, Pietro Cortelli, Alfredo Brusco, Maria Grazia Bruzzone, Caterina Mariotti, Daniela Di Bella, Franco Taroni