Genetic Variant NM_015274.3:c.160G>C (chr4-6576599-G-C) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_015274.3(MAN2B2):c.160G>C(p.Ala54Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000475 in 1,613,204 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00043 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00048 ( 8 hom. )

Consequence

MAN2B2
NM_015274.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.85

Variant links:

Genes affected

MAN2B2 (HGNC:29623): (mannosidase alpha class 2B member 2) Predicted to enable alpha-mannosidase activity. Predicted to be involved in mannose metabolic process. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

MAN2B2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.014566481).

BS2

High Homozygotes in GnomAdExome4 at 8 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAN2B2	NM_015274.3 link	c.160G>C	p.Ala54Pro	missense_variant	Exon 2 of 19	ENST00000285599.8	NP_056089.1	Q9Y2E5-1
MAN2B2	NM_001292038.2 link	c.160G>C	p.Ala54Pro	missense_variant	Exon 2 of 19		NP_001278967.1	Q9Y2E5E9PCD7B7Z754

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MAN2B2	ENST00000285599.8 link	c.160G>C	p.Ala54Pro	missense_variant	Exon 2 of 19	1	NM_015274.3	ENSP00000285599.3	Q9Y2E5-1
MAN2B2	ENST00000504248.5 link	c.160G>C	p.Ala54Pro	missense_variant	Exon 2 of 19	2		ENSP00000423129.1	E9PCD7
MAN2B2	ENST00000505907.1 link	c.154G>C	p.Ala52Pro	missense_variant	Exon 2 of 17	2		ENSP00000426273.1	H0YA68

Frequencies

GnomAD3 genomes

AF:

0.000434

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.0164

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000868

AC:

218

AN:

251060

Hom.:

AF XY:

0.000839

AC XY:

114

AN XY:

135842

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0177

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000282

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000479

AC:

700

AN:

1460988

Hom.:

Cov.:

AF XY:

0.000472

AC XY:

343

AN XY:

726808

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0180

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000120

Gnomad4 OTH exome

AF:

0.00149

GnomAD4 genome

AF:

0.000434

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.0164

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000761

Hom.:

Bravo

AF:

0.000544

ExAC

AF:

0.000634

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000533

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.62

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.18

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.37

T;.

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.67

LIST_S2

Benign

0.82

T;T

M_CAP

Benign

0.0035

MetaRNN

Benign

0.015

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

L;.

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-3.2

D;D

REVEL

Benign

0.18

Sift

Benign

0.080

T;T

Sift4G

Benign

0.066

T;T

Polyphen

0.50

P;P

Vest4

0.67

MutPred

0.67

Gain of glycosylation at Y57 (P = 0.0242);Gain of glycosylation at Y57 (P = 0.0242);

MVP

0.29

MPC

0.35

ClinPred

0.094

GERP RS

3.0

Varity_R

0.85

gMVP

0.74

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over