4-73404398-G-C

Position:

• chr4-73404398-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3 PP5

The NM_000477.7(ALB):​c.71G>C​(p.Arg24Pro) 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 Pathogenic (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R24L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ALB NM_000477.7 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 5.86

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 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.757
• PP5: Variant 4-73404398-G-C is Pathogenic according to our data. Variant chr4-73404398-G-C is described in ClinVar as [Pathogenic]. Clinvar id is 18186.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ALB	NM_000477.7	c.71G>C	p.Arg24Pro	missense_variant	1/15	ENST00000295897.9	NP_000468.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ALB	ENST00000295897.9	c.71G>C	p.Arg24Pro	missense_variant	1/15	1	NM_000477.7	ENSP00000295897	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Alloalbuminemia Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jul 01, 1987

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.85
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.30
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.22	T;D;.;.;.;.;T
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.90	D;D;T;T;T;D;D
M_CAP	Uncertain	0.093	D
MetaRNN	Pathogenic	0.76	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.14	D
MutationAssessor	Pathogenic	3.2	.;M;.;M;.;.;.
MutationTaster	Benign	1.0	D;D;D;N;N
PrimateAI	Uncertain	0.49	T
PROVEAN	Uncertain	-3.3	D;D;.;.;N;D;N
REVEL	Uncertain	0.61
Sift	Uncertain	0.0030	D;D;.;.;T;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D;D
Polyphen		1.0, 0.77, 0.99	.;D;.;.;P;.;D
Vest4		0.85, 0.80, 0.82, 0.87, 0.81, 0.82
MutPred		0.51		.;Loss of stability (P = 0.0301);Loss of stability (P = 0.0301);Loss of stability (P = 0.0301);Loss of stability (P = 0.0301);Loss of stability (P = 0.0301);Loss of stability (P = 0.0301);
MVP		0.91
MPC		0.95
ClinPred		0.98	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.79
gMVP		0.74

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs74821926; hg19: chr4-74270115;