2-70678831-A-C
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_001617.4(ADD2):c.1256T>G(p.Leu419Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000366 in 1,614,048 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000040 ( 0 hom. )
Consequence
ADD2
NM_001617.4 missense
NM_001617.4 missense
Scores
2
12
4
Clinical Significance
Conservation
PhyloP100: 7.21
Genes affected
ADD2 (HGNC:244): (adducin 2) Adducins are heteromeric proteins composed of different subunits referred to as adducin alpha, beta and gamma. The three subunits are encoded by distinct genes and belong to a family of membrane skeletal proteins involved in the assembly of spectrin-actin network in erythrocytes and at sites of cell-cell contact in epithelial tissues. While adducins alpha and gamma are ubiquitously expressed, the expression of adducin beta is restricted to brain and hematopoietic tissues. Adducin, originally purified from human erythrocytes, was found to be a heterodimer of adducins alpha and beta. Polymorphisms resulting in amino acid substitutions in these two subunits have been associated with the regulation of blood pressure in an animal model of hypertension. Heterodimers consisting of alpha and gamma subunits have also been described. Structurally, each subunit is comprised of two distinct domains. The amino-terminal region is protease resistant and globular in shape, while the carboxy-terminal region is protease sensitive. The latter contains multiple phosphorylation sites for protein kinase C, the binding site for calmodulin, and is required for association with spectrin and actin. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jun 2010]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ADD2 | NM_001617.4 | c.1256T>G | p.Leu419Arg | missense_variant | 11/16 | ENST00000264436.9 | |
LOC105374794 | XR_940230.3 | n.292-642A>C | intron_variant, non_coding_transcript_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ADD2 | ENST00000264436.9 | c.1256T>G | p.Leu419Arg | missense_variant | 11/16 | 1 | NM_001617.4 | P2 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152178Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251332Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135818
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GnomAD4 exome AF: 0.0000397 AC: 58AN: 1461870Hom.: 0 Cov.: 31 AF XY: 0.0000371 AC XY: 27AN XY: 727238
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GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152178Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74324
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Feb 09, 2022 | The c.1256T>G (p.L419R) alteration is located in exon 11 (coding exon 9) of the ADD2 gene. This alteration results from a T to G substitution at nucleotide position 1256, causing the leucine (L) at amino acid position 419 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Uncertain
Cadd
Uncertain
Dann
Uncertain
DEOGEN2
Uncertain
D;D;.;.;.
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
M_CAP
Benign
D
MetaRNN
Uncertain
D;D;D;D;D
MetaSVM
Benign
T
MutationAssessor
Uncertain
M;M;M;M;.
MutationTaster
Benign
D;D;D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D;D;D;D;D
REVEL
Uncertain
Sift
Pathogenic
D;D;D;D;D
Sift4G
Uncertain
D;D;D;D;D
Polyphen
P;P;D;.;.
Vest4
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at