Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2
The NM_001148.6(ANK2):āc.7436A>Gā(p.Lys2479Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000508 in 1,614,058 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
ANK2 (HGNC:493): (ankyrin 2) This gene encodes a member of the ankyrin family of proteins that link the integral membrane proteins to the underlying spectrin-actin cytoskeleton. Ankyrins play key roles in activities such as cell motility, activation, proliferation, contact and the maintenance of specialized membrane domains. Most ankyrins are typically composed of three structural domains: an amino-terminal domain containing multiple ankyrin repeats; a central region with a highly conserved spectrin binding domain; and a carboxy-terminal regulatory domain which is the least conserved and subject to variation. The protein encoded by this gene is required for targeting and stability of Na/Ca exchanger 1 in cardiomyocytes. Mutations in this gene cause long QT syndrome 4 and cardiac arrhythmia syndrome. Multiple transcript variants encoding different isoforms have been described. [provided by RefSeq, Dec 2011]
Computational evidence support a benign effect (MetaRNN=0.09936917).
BP6
Variant 4-113356054-A-G is Benign according to our data. Variant chr4-113356054-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 191410.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=1}.
BS1
Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.0000554 (81/1461820) while in subpopulation SAS AF= 0.000719 (62/86258). AF 95% confidence interval is 0.000575. There are 0 homozygotes in gnomad4_exome. There are 48 alleles in male gnomad4_exome subpopulation. Median coverage is 35. This position pass quality control queck.
Biesecker Lab/Clinical Genomics Section, National Institutes of Health
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: research
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not specified Benign:1
Mar 05, 2018
GeneDx
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Long QT syndrome Benign:1
Dec 11, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
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Cardiovascular phenotype Benign:1
Mar 10, 2022
Ambry Genetics
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -