SCN5A Variant P1298H

Summary of observed carriers, functional annotations, and structural context for SCN5A P1298H. Data combine curated literature, international cohorts, and gnomAD observations.

Estimated LQT3 penetrance

12%

0/10 effective observations

Estimated BrS1 penetrance

17%

1/10 effective observations

Total carriers

0

0 BrS1 · 0 LQT3 · 0 unaffected

P1298H has not been reported in gnomAD. This residue resides in a Mild_Hotspot region for Brugada syndrome and a Mild_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 (%)
NA NA NA 0.885 16 12

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 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.

Previously observed variants near P1298H.
Neighbour residue Distance (Å) Observed variants
1297 3
1281 14 c.3840+1G>A, V1281F,
1243 15 D1243N,
1285 11
1299 5 c.3894delC,
1295 8 E1295K,
1298 0 P1298L,
1288 9 A1288G,
1733 13
1286 15
1738 14 S1738T, S1738F,
1302 11 p.L1302Vfs18,
1289 11
1678 14 N1678S,
1300 6
1735 12
1296 7 M1296T,
1301 11
1292 9
1284 12
1734 9
1291 9
1677 13
1240 13 E1240Q,
1287 13
1732 13
1290 13
1736 14
1293 9 F1293S,
1236 14 K1236R, K1236N, K1236N,
1294 11 A1294G,
1303 13 R1303W, R1303Q,