rs147463318

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001368809.2(AMPD2):c.23C>G(p.Ser8Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000628 in 1,608,178 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000065 ( 0 hom. )

Consequence

AMPD2
NM_001368809.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.61

Publications

0 publications found

Variant links:

Genes affected

AMPD2 (HGNC:469): (adenosine monophosphate deaminase 2) The protein encoded by this gene is important in purine metabolism by converting AMP to IMP. The encoded protein, which acts as a homotetramer, is one of three AMP deaminases found in mammals. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

AMPD2 Gene-Disease associations (from GenCC):

pontocerebellar hypoplasia type 9
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P, Ambry Genetics
hereditary spastic paraplegia 63
Inheritance: Unknown, AR Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

AMPD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.121617645).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AMPD2	NM_001368809.2 link	c.23C>G	p.Ser8Cys	missense_variant	Exon 2 of 19	ENST00000528667.7	NP_001355738.1
AMPD2	NM_004037.9 link	c.23C>G	p.Ser8Cys	missense_variant	Exon 1 of 18		NP_004028.4	Q01433
AMPD2	NM_001308170.1 link	c.91C>G	p.Leu31Val	missense_variant	Exon 1 of 17		NP_001295099.1	Q01433-4
AMPD2	NM_139156.4 link	c.10+920C>G		intron_variant	Intron 1 of 17		NP_631895.1	Q01433-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AMPD2	ENST00000528667.7 link	c.23C>G	p.Ser8Cys	missense_variant	Exon 2 of 19	1	NM_001368809.2	ENSP00000436541.2

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152242

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000254

AC:

AN:

236170

AF XY:

0.0000156

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000571

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000646

AC:

AN:

1455936

Hom.:

Cov.:

AF XY:

0.0000511

AC XY:

AN XY:

723700

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33344

American (AMR)

AF:

0.00

AC:

AN:

44112

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25982

East Asian (EAS)

AF:

0.00

AC:

AN:

39472

South Asian (SAS)

AF:

0.00

AC:

AN:

85166

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52746

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.0000847

AC:

AN:

1109218

Other (OTH)

AF:

0.00

AC:

AN:

60138

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.457

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

AF:

0.0000460

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74370

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41466

American (AMR)

AF:

0.00

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.539

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jul 12, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.185C>G (p.S62C) alteration is located in exon 1 (coding exon 1) of the AMPD2 gene. This alteration results from a C to G substitution at nucleotide position 185, causing the serine (S) at amino acid position 62 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Hereditary spastic paraplegia 63;C4014354:Pontocerebellar hypoplasia type 9

Uncertain:1

Jul 24, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces serine with cysteine at codon 62 of the AMPD2 protein (p.Ser62Cys). The serine residue is weakly conserved and there is a moderate physicochemical difference between serine and cysteine. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with AMPD2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.44

CADD

Benign

(source)

DANN

Benign

0.97

Eigen

Benign

-0.39

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.45

M_CAP

Uncertain

0.096

MetaRNN

Benign

0.12

MetaSVM

Benign

-1.1

PhyloP100

1.6

PROVEAN

Benign

-0.020

REVEL

Benign

0.22

Sift

Benign

0.51

Sift4G

Benign

0.52

Polyphen

0.0090

Vest4

0.19

MVP

0.83

ClinPred

0.88

GERP RS

5.1

PromoterAI

0.022

Neutral

(source)

Varity_R

0.13

Mutation Taster

=82/18

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over