chr19-12647592-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000528.4(MAN2B1):c.2671G>A(p.Gly891Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000031 in 1,612,510 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars). Synonymous variant affecting the same amino acid position (i.e. G891G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

MAN2B1
NM_000528.4 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 5.54

Variant links:

Genes affected

MAN2B1 (HGNC:6826): (mannosidase alpha class 2B member 1) This gene encodes an enzyme that hydrolyzes terminal, non-reducing alpha-D-mannose residues in alpha-D-mannosides. Its activity is necessary for the catabolism of N-linked carbohydrates released during glycoprotein turnover and it is member of family 38 of glycosyl hydrolases. The full length protein is processed in two steps. First, a 49 aa leader sequence is cleaved off and the remainder of the protein is processed into 3 peptides of 70 kDa, 42 kDa (D) and 13/15 kDa (E). Next, the 70 kDa peptide is further processed into three peptides (A, B and C). The A, B and C peptides are disulfide-linked. Defects in this gene have been associated with lysosomal alpha-mannosidosis. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Mar 2010]

MAN2B1 links:

ENSG00000269242 (HGNC:):

ENSG00000269242 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.885

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAN2B1	NM_000528.4 link	c.2671G>A	p.Gly891Arg	missense_variant	Exon 22 of 24	ENST00000456935.7	NP_000519.2	O00754-1
MAN2B1	NM_001173498.2 link	c.2668G>A	p.Gly890Arg	missense_variant	Exon 22 of 24		NP_001166969.1	O00754-2A8K6A7
MAN2B1	XM_005259913.3 link	c.2674G>A	p.Gly892Arg	missense_variant	Exon 22 of 24		XP_005259970.1
MAN2B1	XM_047438841.1 link	c.1570G>A	p.Gly524Arg	missense_variant	Exon 15 of 17		XP_047294797.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAN2B1	ENST00000456935.7 link	c.2671G>A	p.Gly891Arg	missense_variant	Exon 22 of 24	1	NM_000528.4	ENSP00000395473.2		O00754-1
ENSG00000269242	ENST00000597692.1 link	n.229G>A		non_coding_transcript_exon_variant	Exon 2 of 5	2		ENSP00000470240.1		M0QZ24

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152058

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1460452

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726466

show subpopulations

Gnomad4 AFR exome

AF:

0.00

AC:

AN:

33448

Gnomad4 AMR exome

AF:

0.00

AC:

AN:

44680

Gnomad4 ASJ exome

AF:

0.00

AC:

AN:

26060

Gnomad4 EAS exome

AF:

0.00

AC:

AN:

39680

Gnomad4 SAS exome

AF:

0.00

AC:

AN:

86202

Gnomad4 FIN exome

AF:

0.00

AC:

AN:

53170

Gnomad4 NFE exome

AF:

0.00000360

AC:

AN:

1111184

Gnomad4 Remaining exome

AF:

0.00

AC:

AN:

60326

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

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

AF:

0.00000658

AC:

AN:

152058

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.00

AC:

AN:

Gnomad4 AMR

AF:

0.00

AC:

AN:

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.00

AC:

AN:

Gnomad4 SAS

AF:

0.00

AC:

AN:

Gnomad4 FIN

AF:

0.00

AC:

AN:

Gnomad4 NFE

AF:

0.0000147

AC:

0.0000147024

AN:

0.0000147024

Gnomad4 OTH

AF:

0.00

AC:

AN:

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Deficiency of alpha-mannosidase

Uncertain:1

Jun 07, 2012

ClinVar Staff, National Center for Biotechnology Information (NCBI)

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.80

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

D;.

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.79

T;T

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.89

D;D

MetaSVM

Uncertain

0.35

MutationAssessor

Pathogenic

3.4

M;.

PrimateAI

Uncertain

0.66

PROVEAN

Pathogenic

-4.6

D;D

REVEL

Uncertain

0.59

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0090

D;D

Polyphen

1.0

D;.

Vest4

0.84

MutPred

0.57

Gain of MoRF binding (P = 0.0352);.;

MVP

0.91

MPC

0.46

ClinPred

0.98

GERP RS

5.7

Varity_R

0.31

gMVP

0.90

Mutation Taster

=36/64

disease causing

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

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over