Table 2.
Details of patients with VUSs that strongly clinically correlate with phenotype.
| Case No. | Gene | Nucleotide | Protein | Consequence | Zygosity | ACMG classification | Age of onset | Classification of Epilepsy | Clinical Features (if provided) | Other Features | Family History | Consanguinity | Change to medical treatment made | Variant Reclassification (with Clinical information) | ACMG reclassification Criteria |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22 | KCTD7 | Exon 3, c.335G > A | (p.Arg112His) | Missense | Homozygous | VUS | 2 years | Combined focal and generalized | Generalized and focal seizures clinically | Speech delay, regression in milestones, microcephaly, short stature, elfin facies, slanting eyes, failure to thrive | Yes (2nd cousin) | Yes | Yes | Likely Pathogenic | PS1, PP3, PP4, PP5 |
| 23 | SCN1A | Exon 26, c.5243C > G | (p.Pro1748Arg) | Missense | Heterozygous | VUS | 6 months | Generalized | GTC originally with fever, now without | None | No | Yes | Yes | Likely Pathogenic | PS1, PM1, PM2, PP3, PP4 |
| 24 | CLN6 | Exon 3, c.248A > G | (p.Asp83Gly) | Missense | Heterozygous | VUS | 4 years | Generalized | GTC | Regression of milestones, falls, ataxia | N/A | Yes | N/A | Likely Pathogenic | PM2, PP1, PP2, PP3, PP4 |
Abbreviations: GTC: generalized tonic clonic; N/A: not available; VUS: variant of uncertain significance.