KCNQ1 Variant T587R
Summary of observed carriers, functional annotations, and structural context for KCNQ1 T587R. Data combine curated literature, international cohorts, and gnomAD observations.
Estimated LQT1 penetrance
64%
8/13 effective observations
Total carriers
3
2 LQT1 · 1 unaffected
Functional studies
0
Publications with functional data
Variant features alone are equivalent to phenotyping 6 individuals with LQT1 and 4 unaffected individuals.
In silico predictors
| PROVEAN | PolyPhen-2 | BLAST-PSSM | REVEL | Penetrance Density LQT1 (%) |
|---|---|---|---|---|
| -3.6 | 0.464 | -1 | 0.829 | 67 |
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. BLAST-PSSM reflects evolutionary conservation; more negative values indicate rarer substitutions. Penetrance density summarises neighbouring residue risk (Kroncke et al. 2019).
Reported carrier data
| Source | Year | Carriers | Unaffected | LQT1 | Other Disease |
|---|---|---|---|---|---|
| 32893267 | 2020 | 1 | None | 1 | None |
| 30244407 | 2018 | 2 | 1 | 1 | None |
| Literature, cohort, and gnomAD | – | 3 | 1 | 2 | – |
| Variant features alone | – | 15 | 4 | 6 | – |
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.
| Neighbour residue | Distance (Å) | Observed variants |
|---|---|---|
| 587 | 0 | T587M, T587R, |
| 586 | 4 | N586D, |
| 588 | 4 | I588F, |
| 585 | 5 | S585N, |
| 589 | 5 | G589D, G589S, |
| 584 | 7 | G584S, |
| 590 | 7 | A590T, |
| 583 | 8 | R583H, R583C, R583G, |
| 591 | 8 | R591H, R591C, R591L, |
| 582 | 8 | |
| 592 | 8 | |
| 581 | 9 | |
| 593 | 9 | N593S, |
| 580 | 10 | S580G, S580N, |
| 594 | 10 | R594Q, R594P, |
| 579 | 11 | |
| 595 | 11 | V595L, V595L |
| 578 | 11 | E578K, E578V, |
| 596 | 11 | E596del, E596K, |
| 577 | 12 | |
| 597 | 12 | |
| 576 | 13 | V576I, |
| 598 | 13 | K598R, |
| 575 | 13 | |
| 599 | 13 | |
| 574 | 14 | I574V, |
| 600 | 14 | T600M, |
| 573 | 14 | F573L, F573L, F573L, |
| 601 | 14 | |
| 572 | 15 | |
| 602 | 15 |