SCN5A Variant P1048S

Summary of observed carriers, functional annotations, and structural context for SCN5A P1048S. Data combine curated literature, international cohorts, and gnomAD observations.

Estimated LQT3 penetrance

11%

0/11 effective observations

Estimated BrS1 penetrance

23%

2/11 effective observations

Total carriers

1

0 BrS1 · 0 LQT3 · 1 unaffected

P1048S is present in 1 alleles in gnomAD. This residue resides in a Mild_Hotspot region for Brugada syndrome and a Non_Hotspot region for LQT3.

Variant features alone are equivalent to phenotyping 2 individuals for Brugada syndrome and 0 individuals for LQT3.

In silico predictors

Variant-level computational predictors.
PROVEAN PolyPhen-2 BLAST-PSSM REVEL Penetrance Density BrS (%) Penetrance Density LQT3 (%)
-7.58 0.99 1.37 0.647 32 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

Observed carriers by publication or cohort.
Source Year Carriers Unaffected LQT3 BrS1 Other Other Disease
Literature, cohort, and gnomAD 1 1 0 0
Variant features alone 15 13 0 2

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.

Previously observed variants near P1048S.
Neighbour residue Distance (Å) Observed variants
1033 15 Q1033R,
1034 14 P1034T,
1035 14 G1035V,
1036 13
1037 13
1038 12
1039 11
1040 11 G1040R, G1040R,
1041 10 D1041N, D1041G,
1042 9
1043 8 E1043K,
1044 8
1045 7 V1045M,
1046 5
1047 4 c.3140_3141dupTG,
1048 0 P1048S, c.3142_3143insTG, p.P1048SfsX96,
1049 4
1050 5 A1050T, p.A1050DfsX9, p.A1050CfsX9,
1051 7 V1051A,
1052 8 p.A1052CfsX7, A1052D,
1053 8 E1053K,
1054 9
1055 10 D1055G,
1056 11 T1056A,
1057 11
1058 12 c.3171_3172delTGinsA,
1059 13 Q1059X,
1060 13
1061 14 E1061D, E1061D,
1062 14 D1062H,
1063 15 E1063G