10-90918981-AAAATAAATAAAT-AAAAT
Variant summary
Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6
The NM_014391.3(ANKRD1):c.346-17_346-10delATTTATTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0189 in 1,269,304 control chromosomes in the GnomAD database, including 3,441 homozygotes. There is a variant allele frequency bias in the population database for this variant (GnomAd4), which may indicate mosaicism or somatic mutations in the reference population data. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_014391.3 intron
Scores
Clinical Significance
Conservation
Publications
- familial isolated dilated cardiomyopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- dilated cardiomyopathyInheritance: AD Classification: LIMITED Submitted by: ClinGen
- hypertrophic cardiomyopathyInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ANKRD1 | NM_014391.3 | c.346-17_346-10delATTTATTT | intron_variant | Intron 3 of 8 | ENST00000371697.4 | NP_055206.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00587 AC: 524AN: 89238Hom.: 7 Cov.: 0 show subpopulations
GnomAD2 exomes AF: 0.127 AC: 10740AN: 84372 AF XY: 0.119 show subpopulations
GnomAD4 exome AF: 0.0199 AC: 23458AN: 1180070Hom.: 3434 AF XY: 0.0206 AC XY: 12232AN XY: 592942 show subpopulations ⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
Age Distribution
GnomAD4 genome AF: 0.00588 AC: 525AN: 89234Hom.: 7 Cov.: 0 AF XY: 0.00604 AC XY: 258AN XY: 42742 show subpopulations ⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
Age Distribution
ClinVar
Submissions by phenotype
not specified Benign:3
Variant summary: ANKRD1 c.346-17_346-10delATTTATTT alters a non-conserved nucleotide located at a position not widely known to affect splicing. Several computational tools predict a significant impact on normal splicing: One predict the variant abolishes a canonical 3' acceptor site. Two predict the variant weakens a canonical 3' acceptor site. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.019 in 1269304 control chromosomes in the gnomAD database, including 3441 homozygotes. The observed variant frequency is approximately 755 fold of the estimated maximal expected allele frequency for a pathogenic variant in ANKRD1 causing Cardiomyopathy phenotype (2.5e-05). To our knowledge, no occurrence of c.346-17_346-10delATTTATTT in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 45631). Based on the evidence outlined above, the variant was classified as benign. -
The c.346-17_346-10del variant in ANKRD1 has not been reported in the literature nor previously identified by our laboratory. This variant is located in a rep etitive region in intron 3 that contains several other common deletions and has been detected in 2/100 control chromosomes tested by our laboratory. Based on t he overall evidence for variants affecting this region and its frequency in cont rols this variant is likely benign. -
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Congenital total pulmonary venous return anomaly Benign:3
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Dilated Cardiomyopathy, Dominant Uncertain:1
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Cardiomyopathy Benign:1
The variant is found in DCM panel(s). -
ANKRD1-related dilated cardiomyopathy Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at