SCN5A Variant S1964F
Summary of observed carriers, functional annotations, and structural context for SCN5A S1964F. Data combine curated literature, international cohorts, and gnomAD observations.
Estimated LQT3 penetrance
1%
0/24 effective observations
Estimated BrS1 penetrance
8%
1/24 effective observations
Total carriers
14
1 BrS1 · 0 LQT3 · 13 unaffected
Variant features alone are equivalent to phenotyping 0 individuals for Brugada syndrome and 0 individuals for LQT3.
In silico predictors
| PROVEAN | PolyPhen-2 | BLAST-PSSM | REVEL | Penetrance Density BrS (%) | Penetrance Density LQT3 (%) |
|---|---|---|---|---|---|
| -2.82 | 0.736 | -1.99 | 0.46 | 3 | 0 |
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 |
|---|---|---|---|---|---|---|---|
| 21126620 | 2010 | 1 | 0 | 1 | 0 | ||
| Literature, cohort, and gnomAD | – | 14 | 13 | 0 | 1 | – | |
| Variant features alone | – | 15 | 15 | 0 | 0 | – | – |
Totals may differ from individual publications due to duplicate patients removed during curation.
Functional data
Peak and late/persistent current values are relative to wild-type (100% indicates no change). V1/2 activation and inactivation denote the membrane potentials (mV) at which half-maximal current is achieved.
| PubMed ID | Year | Cell Type | Peak Current (% WT) | V1/2 Activation (mV) | V1/2 Inactivation (mV) | Late/Persistent Current (% WT) |
|---|---|---|---|---|---|---|
| 21126620 | 2010 |
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 |
|---|---|---|
| 1949 | 15 | A1949S, A1949T, |
| 1950 | 14 | Y1950C, |
| 1951 | 14 | V1951L, V1951M, |
| 1952 | 13 | |
| 1953 | 13 | p.S1953RfsX84, |
| 1954 | 12 | E1954K, |
| 1955 | 11 | N1955Y, |
| 1956 | 11 | |
| 1957 | 10 | S1957P, |
| 1958 | 9 | R1958Q, R1958P, R1958X, |
| 1959 | 8 | |
| 1960 | 8 | |
| 1961 | 7 | |
| 1962 | 5 | P1962S, P1962L |
| 1963 | 4 | P1963L, |
| 1964 | 0 | S1964F, |
| 1965 | 4 | S1965G, S1965N, |
| 1966 | 5 | |
| 1967 | 7 | p.S1967LfsX12, |
| 1968 | 8 | I1968N, I1968T, I1968S, I1968V, I1968M, |
| 1969 | 8 | |
| 1970 | 9 | p.S1970_S1972del, |
| 1971 | 10 | |
| 1972 | 11 | |
| 1973 | 11 | F1973L, |
| 1974 | 12 | |
| 1975 | 13 | P1975T, |
| 1976 | 13 | S1976C, |
| 1977 | 14 | Y1977N, |
| 1978 | 14 | |
| 1979 | 15 |