SCN5A Variant E446Q
Summary of observed carriers, functional annotations, and structural context for SCN5A E446Q. Data combine curated literature, international cohorts, and gnomAD observations.
Estimated LQT3 penetrance
8%
0/10 effective observations
Estimated BrS1 penetrance
15%
1/10 effective observations
Total carriers
0
0 BrS1 · 0 LQT3 · 0 unaffected
Variant features alone are equivalent to phenotyping 1 individuals for Brugada syndrome and 0 individuals for LQT3.
In silico predictors
| PROVEAN | PolyPhen-2 | BLAST-PSSM | REVEL | Penetrance Density BrS (%) | Penetrance Density LQT3 (%) |
|---|---|---|---|---|---|
| NA | NA | NA | 0.484 | 15 | 8 |
PROVEAN scores below -2 suggest deleterious impact. REVEL scores above 0.5–0.75 are often interpreted as likely pathogenic. PolyPhen-2 scores above 0.85 are typically pathogenic. Penetrance density summarises neighbouring residue risk (Kroncke et al. 2019).
Reported carrier data
| Source | Year | Carriers | Unaffected | LQT3 | BrS1 | Other | Other Disease |
|---|---|---|---|---|---|---|---|
| Literature, cohort, and gnomAD | – | 0 | 0 | 0 | 0 | – | |
| Variant features alone | – | 15 | 14 | 0 | 1 | – | – |
Totals may differ from individual publications due to duplicate patients removed during curation.
Nearby variants
Neighbouring residues within 15 Ångström provide structural context. Variants listed in the right-most column have been observed clinically or in gnomAD.
| Neighbour residue | Distance (Å) | Observed variants |
|---|---|---|
| 431 | 15 | |
| 432 | 14 | |
| 433 | 14 | R433H, R433C, R433S, |
| 434 | 13 | |
| 435 | 13 | |
| 436 | 12 | |
| 437 | 11 | A437V, |
| 438 | 11 | M438L, M438L, M438T, |
| 439 | 10 | E439V, E439K, |
| 440 | 9 | |
| 441 | 8 | L441F, |
| 442 | 8 | |
| 443 | 7 | |
| 444 | 5 | E444fsX14, |
| 445 | 4 | H445Q, H445Y, H445D, H445Q, |
| 446 | 0 | E446K, |
| 447 | 4 | c.1338+2T>A, c.1339-24G>A, A447S, A447G, |
| 448 | 5 | |
| 449 | 7 | T449A, Y449C, |
| 450 | 8 | |
| 451 | 8 | |
| 452 | 9 | G452D, |
| 453 | 10 | V453M, |
| 454 | 11 | |
| 455 | 11 | |
| 456 | 12 | V456M, |
| 457 | 13 | |
| 458 | 13 | R458C, p.R458VfsX12, R458H, |
| 459 | 14 | S459G, |
| 460 | 14 | |
| 461 | 15 | L461V, |