4-2894046-A-T

Position:

• chr4-2894046-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001354761.2(ADD1):​c.544A>T​(p.Ile182Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: ADD1 NM_001354761.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.21

Genes affected

ADD1 (HGNC:243): (adducin 1) Adducins are a family of cytoskeletal proteins encoded by three genes (alpha, beta, and gamma). Adducin acts as a heterodimer of the related alpha, beta, or gamma subunits. The protein encoded by this gene represents the alpha subunit. Alpha- and beta-adducin include a protease-resistant N-terminal region and a protease-sensitive, hydrophilic C-terminal region. Adducin binds with high affinity to Ca(2+)/calmodulin and is a substrate for protein kinases A and C. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.832

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ADD1	NM_001354761.2	c.544A>T	p.Ile182Phe	missense_variant	5/16	ENST00000683351.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ADD1	ENST00000683351.1	c.544A>T	p.Ile182Phe	missense_variant	5/16		NM_001354761.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 30, 2024

The c.544A>T (p.I182F) alteration is located in exon 5 (coding exon 4) of the ADD1 gene. This alteration results from a A to T substitution at nucleotide position 544, causing the isoleucine (I) at amino acid position 182 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.50
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.17
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.27	.;.;T;T;.;T;.;.;T
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D;D;D;D;D;D;D;.;D
M_CAP	Benign	0.042	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.33	T
MutationAssessor	Pathogenic	3.0	M;M;.;.;.;.;M;M;M
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.64	T
PROVEAN	Uncertain	-3.5	D;D;D;D;D;D;D;D;D
REVEL	Uncertain	0.56
Sift	Uncertain	0.0010	D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.0020	D;D;D;D;D;D;D;D;D
Polyphen		0.98	D;.;.;.;.;P;.;.;P
Vest4		0.82
MutPred		0.56		Gain of catalytic residue at I182 (P = 0.0059);Gain of catalytic residue at I182 (P = 0.0059);Gain of catalytic residue at I182 (P = 0.0059);Gain of catalytic residue at I182 (P = 0.0059);.;Gain of catalytic residue at I182 (P = 0.0059);Gain of catalytic residue at I182 (P = 0.0059);Gain of catalytic residue at I182 (P = 0.0059);Gain of catalytic residue at I182 (P = 0.0059);
MVP		0.84
MPC		0.91
ClinPred		0.99	D
GERP RS		5.7
Varity_R		0.76
gMVP		0.98

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-2895773;