Mutations in the CTSD gene cause NCL with onset around birth or in early childhood, or at later ages. Recent studies have shown homozygous mutations occurring in other disease phenotypes. mutation table cln10_ctsd_mutation_table_dec24.xlsx cln10_ctsd_mutation_table_dec24.xlsx patient table cln10_patient_table_dec24.xlsx cln10_patient_table_dec24.xlsx