Background
Genetics of ALS
Genetics of fALS
Genetic subtype | Chromosomal locus | Gene | Protein | Onset | Inheritance | Clinical feature | Other diseases caused by the gene |
---|---|---|---|---|---|---|---|
ALS1 | 21q22.1 | SOD1 | Cu/Zn SOD-1 | Adult | AD/AR | Typical ALS | NA |
ALS2 | 2q33-2q35 | Alsin | Alsin | Juv | AR | Slowly progressive, predominantly UMN signs like limb, & facial spasticity | PLS IAHSP |
ALS3 | 18q21 | Unknown | Unknown | Adu | AD | Typical ALS with limb onset especially lower limb | NA |
ALS4 | 9q34 | SETX | Senataxin | Juv | AD | Slowly progressive, distal hereditary motor neuropathy with pyramidal signs | SCAR 1 and AOA2 |
ALS5 | 15q15-21 | SPG 11 | Spatacsin | Juv | AR | Slowly progressive | HSP |
ALS6 | 16p11.2 | FUS | Fused in Sarcoma | Juv/Adu | AD/AR | Typical ALS | NA |
ALS8 | 20q13.3 | VAPB | VAPB | Adu | AD | Typical and atypical ALS | SMA |
ALS9 | 14q11.2 | ANG | Angiogenin | Adu | AD | Typical ALS, FTD and Parkinsonism | NA |
ALS10 | 1p36.2 | TARDBP | DNA-binding protein | Adu | AD | Typical ALS | NA |
ALS11 | 6q21 | FIG 4 | Phosphoinositide-5phosphatease | Adu | AD | Rapid progressive with prominent corticospinal tract signs | CMT 4 J |
ALS12 | 10p13 | OPTN | Optineurin | Adu | AD/AR | Slowly progressive with limb onset and predominant UMN signs | Primary Open Angle Glaucoma |
ALS14 | 9p13.3 | VCP | VCP | Adu | AD | Adult onset, with or without FTD | IBMPFD |
ALS15/ALSX | Xp11 | UBQLN2 | Ubiquilin 2 | Adu/Juv | XD | UMN signs proceeding LMN signs | NA |
ALS16 | 9p13.2-21.3 | SIGMAR1 | SIGMAR1 | Juv | AR | Juvenile onset typical ALS | FTD |
ALS-FTD1 | 9q21-22 | unknown | unknown | Adu | AD | ALS with FTD | FTD |
ALS-FTD2 | 9p21 | C9ORF72 | C9ORF72 | Adu | AD | ALS with FTD | FTD |
NA | 2p13 | DCTN1 | Dynactin | Adu | AD | Distal hereditary motor neuropathy with vocal paresis | NA |
Other rare-occurring ALS genes
| |||||||
ALS3 | 18q21 | Unknown | Unknown | Adu | AD | Typical ALS with limb onset especially lower limb | NA |
ALS7 | 20ptel-p13 | Unknown | Unknown | Adu | AD/AR | Typical ALS | NA |
NA | 12q22-23 | DAO | DAO | Adu | AD | Typical ALS | NA |
ALS1/ superoxide dismutase 1(SOD1)
ALS2/ALSIN
ALS4/senataxin (SETX)
ALS5/spatacsin (SPG)
ALS6/fused in sarcoma (FUS)
ALS8/ vesicle associated membrane protein associated protein B (VAPB)
ALS9/angiogenin (ANG)
ALS10/ TAR DNA binding protein (TARDBP)
ALS11/FIG 4
ALS12/optineurin (OPTN)
ALS14/ valosin containing protein (VCP)
ALS15/ALSX/ubiquilin 2 (UBQLN2)
ALS16/SIGMAR1
ALS-FTD1 and ALS-FTD2
Dynactin (DCTN1)
Other rare occurring mutant genes in fALS
Genetics of sALS
Gene | Protein | Chromosomal locus | Variant associated with ALS |
---|---|---|---|
APEX1 | Apurinic Endonuclease DNA repair enzyme 1 | 14q11.2 | SNP associations |
ATXN2 | Ataxin-2 | 12q24.12 | Poly Q repeats |
CHMP2B | Chromatin Modifying Protein 2B | 3p11.2 | Mutations |
HFE | Haemochromatosis | 6p22.2 | SNP associations |
NEFH | Neuro filament Heavy | 22q12.2 | Deletion and Insertions |
SMN1 | Survival Motor Neuron 1 | 5q12.2-q13.3 | Abnormal copy number of genes |
SMN2 | Survival Motor Neuron 2 | 5q12.2-q13.3 | Abnormal copy number of genes |
PON 1,2,3 | Paraoxonase | 7q21.3 | SNP associations and mutations |
PRPH | Peripherin | 12q13.12 | mutations |
VEGF | Vascular Endothelial Growth Factor | 6p21 | Promoter SNP’s |
PGRN | Progranulin | 17q21.31 | Deletions |