Table 3.
Patients with two major ALS gene variants.
Patient ID | Age of onset (age range group, years) | Duration before the 1st exam | Early signs and symptoms | Symptoms | Gene | Variant | PopMax MAF (ExAc) | dbSNP | Pathogenicity (ACMG) | Other disease |
---|---|---|---|---|---|---|---|---|---|---|
#73u | 65-70 | 1.5 y | Tetraparesis | B, PB ++, LMN ++, UMN +++ | SQSTM1 | p.E389Q | 0 | rs1391182750 | VUS | Paget disease, Hyperparathyreodism, Hypothyreodism, Colon cancer (operated) |
SIGMAR1 | p.I42R | 0 | rs1206984068 | VUS | ||||||
#85u | 60-65 | 6 months | Four extremity weakness with spasticity with muscle atrophy and fasciculations, especially in the interosseus muscles | B, PB +, LMN ++, UMN ++ | CCNF | p.L106V | 0 | rs990719669 | VUS | |
KIF5A | p.E758K | 5.54×10–4 | rs140281678 | VUS | ||||||
#90u | 35-40 | 6 months | Psychomotor activity was slowing down, corticospinal tract lesion signs bilaterally | Memory loss, dementia.B, PB+, LMN ++, UMN +++ | TBK1 | p.K631del | 3.73×10–3 | – | VUS | – |
NEK1 | p.R261H | rs200161 | VUS | |||||||
#99u | 55-60 | 8 months | Dysarthria | B, PB +++, LMN ++, UMN+ | NEK1 | p.N250S | 0 | rs368762503 | VUS | Hypothyreoidism |
C9orf72 | Repeat expansion | 0 | – | Pathogenic | ||||||
#106u | 50-55 | 9 months | Four extremity weakness with spasticity | B, PB –, UMN+++, LMN+++ | GRN | p.C335R | 0 | – | VUS | Alcoholism, polyneuropathy, cervical myelopathy caused by CIII-IV-V. disc protrusions |
NEFH | p.P505L | 0 | rs1414968372 | VUS | ||||||
#108u | 45-50 | 2 years | Dysarthria | UMN, B, PB+++ | SQSTM1 | p.R393Q | rs200551825 | VUS | – | |
LMN+++, UMN+++, B | C9orf72 | Repeat expansion | 0 | – | Pathogenic |
B, PB, Bulbar and pseudobulbar, UMN, upper motor neuron, LMN, lower motor neuron, PopMax MAF (ExAc), Maximal general minor allele frequency of the variant in the ExAc database; ACMG, guideline of the American College of Medical Genetics and Genomics; dbSNP, Single Nucleotide Polymorphism Database reference SNP ID number for the variant; VUS, variant of uncertain significance.