NT5C2 and hereditary spastic paraplegia: Other loci q24.31 and q24.32-33 are also linked with HSP phenotypes due to mutations in ER lipid raft Associated 1 (SPG62/ERLIN1) and 5′-Nucleotidase, cytosolic II (SPG45/NT5C2), either in a homozygous or compound heterozygous state [51].