rs75522063

Positions:

• chr4-73408750-G-A

Variant summary

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

The NM_000477.7(ALB):​c.427G>A​(p.Glu143Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as other (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ALB NM_000477.7 missense
• Clinical Significance: other no assertion criteria provided O:1
• Conservation: PhyloP100: 1.08

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]

ALB (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ALB	NM_000477.7	c.427G>A	p.Glu143Lys	missense_variant	4/15	ENST00000295897.9	NP_000468.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ALB	ENST00000295897.9	c.427G>A	p.Glu143Lys	missense_variant	4/15	1	NM_000477.7	ENSP00000295897.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: other

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

ALBUMIN NAGOYA Other:1

other, no assertion criteria provided

literature only

OMIM

Jul 18, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.097	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.018	T;T;.;.;.
Eigen	Benign	-0.47
Eigen_PC	Benign	-0.55
FATHMM_MKL	Benign	0.53	D
LIST_S2	Benign	0.83	T;T;T;T;T
M_CAP	Benign	0.024	T
MetaRNN	Uncertain	0.50	D;D;D;D;D
MetaSVM	Benign	-0.76	T
MutationAssessor	Uncertain	2.6	.;M;.;M;.
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-2.3	N;N;.;.;N
REVEL	Benign	0.10
Sift	Benign	0.072	T;T;.;.;T
Sift4G	Benign	0.19	T;T;T;T;T
Polyphen		0.061	.;B;.;.;.
Vest4		0.27, 0.32, 0.26
MutPred		0.65		.;Gain of methylation at E143 (P = 0.0043);Gain of methylation at E143 (P = 0.0043);Gain of methylation at E143 (P = 0.0043);Gain of methylation at E143 (P = 0.0043);
MVP		0.78
MPC		0.33
ClinPred		0.92	D
GERP RS		3.1
Varity_R		0.56
gMVP		0.40

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs75522063; hg19: chr4-74274467;