NM_000477.7:c.1026C>A

Variant names:

• chr4-73413602-C-A
• rs77544362
• NM_000477.7:c.1026C>A

Variant summary

Our verdict is Uncertain significance. The variant received 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. 14/22 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 the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ALB NM_000477.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.10
• Publications: 3 publications found

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 Gene-Disease associations (from GenCC):

• congenital analbuminemia

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
• hyperthyroxinemia, familial dysalbuminemic

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000477.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALB	NM_000477.7	MANE Select	c.1026C>A	p.Asn342Lys	missense	Exon 8 of 15	NP_000468.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALB	ENST00000295897.9	TSL:1 MANE Select	c.1026C>A	p.Asn342Lys	missense	Exon 8 of 15	ENSP00000295897.4
	ALB	ENST00000415165.6	TSL:1	c.450C>A	p.Asn150Lys	missense	Exon 4 of 11	ENSP00000401820.2
	ALB	ENST00000509063.5	TSL:5	c.1026C>A	p.Asn342Lys	missense	Exon 8 of 14	ENSP00000422784.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

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
Eigen	Benign	0.10
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.033	D
MetaRNN	Benign	0.26	T
MetaSVM	Uncertain	-0.18	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		1.1
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.15
Sift	Benign	1.0	T
Sift4G	Uncertain	0.012	D
Polyphen		0.20	B
Vest4		0.26
MutPred		0.49		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
Mutation Taster		=51/49	polymorphism

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

Other links and lift over

dbSNP: rs77544362; hg19: chr4-74279319;