rs77544362

chr4-73413602-C-Achr4-73413602-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000477.7(ALB):c.1026C>A(p.Asn342Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ALB NM_000477.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.10

Genes affected

ALB (HGNC:399): (albumin) This gene encodes the most abundant protein in human blood. This protein functions in the regulation of blood plasma colloid osmotic pressure and acts as a carrier protein for a wide range of endogenous molecules including hormones, fatty acids, and metabolites, as well as exogenous drugs. Additionally, this protein exhibits an esterase-like activity with broad substrate specificity. The encoded preproprotein is proteolytically processed to generate the mature protein. A peptide derived from this protein, EPI-X4, is an endogenous inhibitor of the CXCR4 chemokine receptor. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26208025).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ALB	NM_000477.7	c.1026C>A	p.Asn342Lys	missense_variant	8/15	ENST00000295897.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALB	ENST00000295897.9	c.1026C>A	p.Asn342Lys	missense_variant	8/15	1	NM_000477.7	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.42
BayesDel_addAF	Benign	-0.065	T
BayesDel_noAF	Benign	-0.33
Cadd	Benign	20
Dann	Benign	0.69
DEOGEN2	Benign	0.24	T;.;.;.;T
Eigen	Benign	0.10
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.88	D;D;D;D;D
M_CAP	Benign	0.033	D
MetaRNN	Benign	0.26	T;T;T;T;T
MetaSVM	Uncertain	-0.18	T
MutationAssessor	Uncertain	2.1	M;.;.;.;.
MutationTaster	Benign	0.93	D;D;D;D;D
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-1.4	N;N;N;N;N
REVEL	Benign	0.15
Sift	Benign	1.0	T;T;T;T;T
Sift4G	Uncertain	0.012	D;D;D;D;D
Polyphen		0.20	B;B;P;.;P
Vest4		0.26
MutPred		0.49		Gain of methylation at N342 (P = 0.0224);.;.;Gain of methylation at N342 (P = 0.0224);.;
MVP		0.77
MPC		0.44
ClinPred		0.58	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.62
gMVP		0.21

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs77544362; hg19: chr4-74279319;