TBK1 and amyotrophic lateral sclerosis: Some gene mutations are detectable in the ALS-FTD spectrum disorder and include C9ORF72, TAR DNA-binding protein (TARDBP), Sequestosome-1 (SQSTM-1), Fused in sarcoma (FUS), Valosin containing protein (VCP), Coiled-coil-helix-coiled-coil-helix domain containing 10 (CHCHD10), Optineurin (OPTN) and Tank-binding kinase 1 (TBK-1) [37,38,39,40,41,42].