SCN5A Variant P119L

Summary of observed carriers, functional annotations, and structural context for SCN5A P119L. Data combine curated literature, international cohorts, and gnomAD observations.

Estimated LQT3 penetrance

4%

0/13 effective observations

Estimated BrS1 penetrance

10%

1/13 effective observations

Total carriers

3

0 BrS1 · 0 LQT3 · 3 unaffected

P119L is present in 3 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 1 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 (%)
-3.57 0.78 -0.92 0.682 11 4

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 – 3 3 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.

Previously observed variants near P119L.
Neighbour residue Distance (Å) Observed variants
126 10 K126E,
178 12 A178G,
117 8
119 0 P119L, P119S,
179 14 R179Q, R179X,
177 11 L177P,
123 7 A123G, A123V,
121 7 R121W, R121Q,
127 13
124 9 A124D,
118 5
125 10 V125L,
174 14 V174I,
115 9 S115G,
112 15 Y112C,
114 12
116 9
180 15 G180V,
120 4
122 5