SCN5A Variant D349E

Summary of observed carriers, functional annotations, and structural context for SCN5A D349E. Data combine curated literature, international cohorts, and gnomAD observations.

Estimated LQT3 penetrance

4%

0/10 effective observations

Estimated BrS1 penetrance

31%

3/10 effective observations

Total carriers

0

0 BrS1 · 0 LQT3 · 0 unaffected

D349E has not been reported in gnomAD. This residue resides in a Hotspot region for Brugada syndrome and a Non_Hotspot region for LQT3.

Variant features alone are equivalent to phenotyping 3 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 0.752 43 1

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 12 0 3

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 D349E.
Neighbour residue Distance (Å) Observed variants
364 12
277 12
901 9 E901K, S901L,
276 11 L276Q, L276P,
363 13
348 4 P348A,
360 12
279 12
355 13 F355I, F355C,
278 15 H278D, H278R,
372 13
356 15 D356N,
361 15
904 7 W904X,
376 7 R376C, R376H,
384 15 S384T,
871 12
354 10
909 15
902 13
349 0 D349N,
373 11
379 12
898 15
274 15 G274C,
325 11 L325R,
900 10
324 10
321 12 S321Y,
872 11 D872N,
345 13
383 14
912 15 Q912R
323 10
347 7
906 14
351 7 G351S, G351C, G351D, G351V,
374 15 W374G,
350 5 H350Q, H350Q,
903 12 p.M903CfsX29,
367 11 R367C, R367H, R367L,
346 10 E346K, E346G, E346X, E346D, E346D,
344 14 A344S,
381 13 c.1140+1G>A, c.1141-3C>A,
322 9
905 10
375 12
352 9 Y352C,
899 14
380 8
377 10
908 11
873 15 S873A,
353 6 T353I,
907 12