Variant 5-109729429-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_002372.4(MAN2A1):c.623G>A(p.Arg208Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000193 in 1,450,168 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

MAN2A1
NM_002372.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.93

Variant links:

Genes affected

MAN2A1 (HGNC:6824): (mannosidase alpha class 2A member 1) This gene encodes a glycosyl hydrolase that localizes to the Golgi and catalyzes the final hydrolytic step in the asparagine-linked oligosaccharide (N-glycan) maturation pathway. Mutations in the mouse homolog of this gene have been shown to cause a systemic autoimmune disease similar to human systemic lupus erythematosus. [provided by RefSeq, Dec 2013]

MAN2A1 links:

MAN2A1 (HGNC:):

MAN2A1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.4060505).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAN2A1	NM_002372.4 linkuse as main transcript	c.623G>A	p.Arg208Gln	missense_variant	4/22	ENST00000261483.5	NP_002363.2	Q16706

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MAN2A1	ENST00000261483.5 linkuse as main transcript	c.623G>A	p.Arg208Gln	missense_variant	4/22	1	NM_002372.4	ENSP00000261483.4		Q16706

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000812

AC:

AN:

246436

Hom.:

AF XY:

0.00000750

AC XY:

AN XY:

133258

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000100

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000193

AC:

AN:

1450168

Hom.:

Cov.:

AF XY:

0.0000194

AC XY:

AN XY:

721792

show subpopulations

Gnomad4 AFR exome

AF:

0.0000303

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000154

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000118

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000172

Gnomad4 OTH exome

AF:

0.0000500

GnomAD4 genome

Cov.:

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.0000264

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 28, 2024

The c.623G>A (p.R208Q) alteration is located in exon 4 (coding exon 4) of the MAN2A1 gene. This alteration results from a G to A substitution at nucleotide position 623, causing the arginine (R) at amino acid position 208 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.41

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.0077

MetaRNN

Benign

0.41

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

PrimateAI

Benign

0.27

PROVEAN

Benign

-2.0

REVEL

Benign

0.10

Sift

Uncertain

0.014

Sift4G

Benign

0.10

Polyphen

0.72

Vest4

0.33

MutPred

0.41

Loss of MoRF binding (P = 0.049);

MVP

0.60

MPC

0.27

ClinPred

0.64

GERP RS

5.8

Varity_R

0.28

gMVP

0.22

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

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