rs370435862
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM5
The NM_000218.3(KCNQ1):c.296C>A(p.Pro99Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000563 in 1,597,760 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P99L) has been classified as Uncertain significance.
Frequency
Consequence
NM_000218.3 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Uncertain_significance. Variant got 4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
KCNQ1 | NM_000218.3 | c.296C>A | p.Pro99Gln | missense_variant | 1/16 | ENST00000155840.12 | |
KCNQ1 | NM_001406836.1 | c.296C>A | p.Pro99Gln | missense_variant | 1/15 | ||
KCNQ1 | NM_001406838.1 | c.296C>A | p.Pro99Gln | missense_variant | 1/11 | ||
KCNQ1 | NM_001406837.1 | c.-67C>A | 5_prime_UTR_variant | 1/17 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
KCNQ1 | ENST00000155840.12 | c.296C>A | p.Pro99Gln | missense_variant | 1/16 | 1 | NM_000218.3 | P1 | |
KCNQ1 | ENST00000345015.4 | n.73C>A | non_coding_transcript_exon_variant | 1/3 | 1 | ||||
KCNQ1 | ENST00000496887.7 | c.35C>A | p.Pro12Gln | missense_variant | 2/16 | 5 | |||
KCNQ1 | ENST00000646564.2 | c.296C>A | p.Pro99Gln | missense_variant | 1/11 |
Frequencies
GnomAD3 genomes ? AF: 0.0000132 AC: 2AN: 152084Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000895 AC: 2AN: 223394Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 124142
GnomAD4 exome AF: 0.00000484 AC: 7AN: 1445676Hom.: 0 Cov.: 31 AF XY: 0.00000417 AC XY: 3AN XY: 719654
GnomAD4 genome ? AF: 0.0000132 AC: 2AN: 152084Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74288
ClinVar
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | AiLife Diagnostics, AiLife Diagnostics | Nov 02, 2021 | - - |
Long QT syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Sep 21, 2023 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt KCNQ1 protein function. ClinVar contains an entry for this variant (Variation ID: 1367809). This variant has not been reported in the literature in individuals affected with KCNQ1-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces proline, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 99 of the KCNQ1 protein (p.Pro99Gln). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at