Variant 1-25753491-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_020379.4(MAN1C1):c.842G>A(p.Arg281Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000135 in 1,613,254 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

MAN1C1
NM_020379.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.28

Variant links:

Genes affected

MAN1C1 (HGNC:19080): (mannosidase alpha class 1C member 1) Predicted to enable mannosyl-oligosaccharide 1,2-alpha-mannosidase activity. Predicted to be involved in N-glycan processing. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

MAN1C1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MAN1C1	NM_020379.4 linkuse as main transcript	c.842G>A	p.Arg281Gln	missense_variant	5/12	ENST00000374332.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
MAN1C1	ENST00000374332.9 linkuse as main transcript	c.842G>A	p.Arg281Gln	missense_variant	5/12	1	NM_020379.4	P1
MAN1C1	ENST00000263979.7 linkuse as main transcript	c.302G>A	p.Arg101Gln	missense_variant	6/13	5
MAN1C1	ENST00000374329.1 linkuse as main transcript	c.155G>A	p.Arg52Gln	missense_variant	4/11	2
MAN1C1	ENST00000473891.1 linkuse as main transcript	n.240G>A		non_coding_transcript_exon_variant	4/5	4

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000235

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.0000678

AC:

AN:

250770

Hom.:

AF XY:

0.0000664

AC XY:

AN XY:

135582

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000203

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000137

AC:

200

AN:

1461080

Hom.:

Cov.:

AF XY:

0.000111

AC XY:

AN XY:

726820

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000166

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000118

AC:

AN:

152174

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.000174

Hom.:

Bravo

AF:

0.000128

ExAC

AF:

0.0000576

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

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

Nov 21, 2022

The c.842G>A (p.R281Q) alteration is located in exon 5 (coding exon 5) of the MAN1C1 gene. This alteration results from a G to A substitution at nucleotide position 842, causing the arginine (R) at amino acid position 281 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

0.11

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.22

Cadd

Pathogenic

Dann

Pathogenic

1.0

Eigen

Pathogenic

0.70

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Benign

0.67

LIST_S2

Uncertain

0.95

D;D;D;D

M_CAP

Benign

0.083

MetaRNN

Uncertain

0.42

T;T;T;T

MetaSVM

Uncertain

-0.28

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.38

Sift4G

Benign

0.65

T;T;T;T

Polyphen

1.0

.;D;.;.

Vest4

0.42

MVP

0.84

MPC

1.4

ClinPred

0.63

GERP RS

4.9

Varity_R

0.15

gMVP

0.39

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