Total submissions: 1
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Concord Molecular Medicine Laboratory, |
RCV003486397 | SCV004239103 | likely pathogenic | Amyotrophic lateral sclerosis type 1 | 2024-01-29 | criteria provided, single submitter | clinical testing | This variant was detected in homozygous state in a male patient with a clinical diagnosis of ALS1 in his early 40s. Patient presented with rapidly progressive limb weakness over 1.5 years. The c.34G>T variant (p.(Asp12Tyr), also known as D11Y) has been reported in multiple heterozygous individuals with ALS1 in Italian population (PMID: 20740631, 21839474, 32987860, 35328090). It was suggested this variant has a founder effect in Italian population with specific phenotype and incomplete penetrance as a dominant trait (PMID: 22292847, 38112783). Described patients with heterozygous SOD1 c.34G>T variant showed slow progression with distal limb involvement, and predominant lower motor neuron signs (PMID: 32250500). It is found in control population at low frequency (rs762628133, gnomAD 0.0003%). In silico analysis suggests this variant to be damaging (REVEL: 0.65). The variant is in the critical superoxide dismutase copper/zinc binding domain (IPR001424). The current evidence allows a classification of the variant as “likely pathogenic” (ACMG criteria: PM1, PM2_supporting, PM3_supporting, PP1_moderate, PP3). |