SCN5A Variant P1511S Detail

We estimate the penetrance of LQTS for SCN5A P1511S around 13% and the Brugada syndrome penetrance around 13%. SCN5A P1511S was found in a total of 0 carriers in 0 papers and/or in gnomAD: 0 had Brugada syndrome, 0 had LQTS. P1511S is not present in gnomAD. P1511S has been functionally characterized in 0 papers. This residue is located in a Non_Hotspot region for Brugada syndrome and a Mild_Hotspot region for LQTS. In silico predictions, functional data (if available), and location in structure are equivalent to phenotyping 10 individuals for Brugada syndrome (1 diagnosed with Brugada syndrome) and 5 individuals for LQTS (0 with LQTS). These data combined with observations of carriers lead us to estimate the LQTS penetrance for SCN5A P1511S around 13% (0/10) and the Brugada syndrome penetrance around 13% (1/10).

In Silico Data

PROVEAN PolyPhen-2 BLAST-PSSM REVEL Penetrance Density BrS (%) Penetrance Density LQT3 (%)
NA NA NA 0.898 9 14
PROVEAN scores less than -2 are considered deleterious. REVEL scores higher than 0.5 or 0.75 are considered likely pathogenic (higher sensitivity with the former cutoff, higher specificity with the latter cutoff). A PolyPhen-2 score of 0.85 or greater is considered likely pathogenic. BLAST-PSSM reflects the evolutionary conservation of residue substitutions, more negative numbers indicate fewer observations of the specific substitution than is expected. Penetrance Density is our previously published method to calculate the average BrS/LQTS probability density in a shell of residues surrounding a residue of interest (Kroncke et al. 2019).

Reported Carrier Data

PubMed ID Year Carriers Unaffected LQT3 BrS1 Other Other Disease
LITERATURE, COHORT, AND GNOMAD: - 0 0 0 0 -
VARIANT FEATURES ALONE: - 15 14 0 1 - -
Summary totals might not agree with the literature table because of duplicate patients, which were excluded from the total counts. We do not distinguish here between multiple missense codons. Missense variants are combined across degenerate codon substitutions since codon-level data were not consistently available for curation.

P1511S has 34 previously observed neighbors within 15 angstroms

A residue within a folded protein on average has nearest neighbors that fall roughly into two shells: a "nearest" neighbor around 5-6 angstroms and a second shell around 11 angstroms. All variants shown in the rightmost column have been observed in at least one individual in the literature or gnomAD.

Neighbor Distance (Angstroms) Variants Observed in Individuals
1523 12 D1523N,
1508 9
1521 13 I1521K, I1521T,
1585 7 Y1585C,
1803 9
1525 13 V1525M, V1525A,
1519 11
1805 11
1584 11
1507 12 p.Q1507_P1509del,
1515 13 c.4542+15G>A, N1515S,
1806 14 p.Thr1806SerfsX27,
1800 14
1512 6 R1512L, R1512Q, R1512W,
1586 14
1514 10 L1514M,
1518 12
1509 6 P1509T,
1578 15 c.4732_4733dupAA,
1510 5
1804 9
1799 11
1526 12 T1526P,
1506 14 P1506T, P1506S,
1583 9 R1583H, R1583C,
1580 12
1588 13 T1588I,
1511 0
1802 12
1582 9 L1582P,
1579 14 L1579fsX53,
1513 7
1581 9 A1581S,
1522 8