B2M p.Ala11Ser

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is . The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_004048.4(B2M):c.31G>T(p.Ala11Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000547 in 1,461,654 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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 variant affecting the same amino acid position, but resulting in a different missense (i.e. A11V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

B2M
NM_004048.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.286

Publications

10 publications found

Variant links:

Genes affected

B2M (HGNC:914): (beta-2-microglobulin) This gene encodes a serum protein found in association with the major histocompatibility complex (MHC) class I heavy chain on the surface of nearly all nucleated cells. The protein has a predominantly beta-pleated sheet structure that can form amyloid fibrils in some pathological conditions. The encoded antimicrobial protein displays antibacterial activity in amniotic fluid. A mutation in this gene has been shown to result in hypercatabolic hypoproteinemia.[provided by RefSeq, Aug 2014]

B2M links:

PATL2 (HGNC:33630): (PAT1 homolog 2) Predicted to enable RNA binding activity. Predicted to be involved in P-body assembly and deadenylation-dependent decapping of nuclear-transcribed mRNA. Predicted to act upstream of or within negative regulation of cytoplasmic mRNA processing body assembly. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PATL2 Gene-Disease associations (from GenCC):

oocyte maturation defect 4
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)

PATL2 links:

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new If you want to explore the variant's impact on the transcript NM_004048.4, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (REVEL=0.129).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004048.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	B2M	NM_004048.4	MANE Select	c.31G>T	p.Ala11Ser	missense	Exon 1 of 4	NP_004039.1	P61769
	PATL2	NM_001387260.1		c.-321C>A		upstream_gene	N/A	NP_001374189.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
B2M	ENST00000648006.3	MANE Select	c.31G>T	p.Ala11Ser	missense	Exon 1 of 4	ENSP00000497910.1	P61769
B2M	ENST00000559916.1	TSL:1	c.31G>T	p.Ala11Ser	missense	Exon 1 of 3	ENSP00000453350.1	P61769
B2M	ENST00000557901.5	TSL:1	n.31G>T		non_coding_transcript_exon	Exon 1 of 4	ENSP00000452861.1	Q16446

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1461654

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727126

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53190

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000719

AC:

AN:

1112006

Other (OTH)

AF:

0.00

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.438

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.63

CADD

Benign

(source)

DANN

Benign

0.81

DEOGEN2

Benign

0.032

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.24

M_CAP

Benign

0.011

MetaRNN

Benign

0.10

MetaSVM

Benign

-0.86

MutationAssessor

Benign

1.4

PhyloP100

0.29

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.95

REVEL

Benign

0.13

Sift

Benign

0.41

Sift4G

Benign

0.39

PromoterAI

0.024

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.070

gMVP

0.53

Mutation Taster

=60/40

polymorphism

(source)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over