dbSNP rs114727970: AMPD2:p.Tyr414Tyr (chr1-109628244-C-T) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BS1BS2

The NM_001368809.2(AMPD2):c.1242C>T(p.Tyr414Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00501 in 1,613,894 control chromosomes in the GnomAD database, including 23 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0030 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0052 ( 23 hom. )

Consequence

AMPD2
NM_001368809.2 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: -2.00

Publications

4 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: Ambry Genetics, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
hereditary spastic paraplegia 63
Inheritance: Unknown, AR Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

AMPD2 links:

ENSG00000228703 (HGNC:40074):

ENSG00000228703 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.47).

BP6

Variant 1-109628244-C-T is Benign according to our data. Variant chr1-109628244-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 210136.

BP7

Synonymous conserved (PhyloP=-2 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00303 (462/152320) while in subpopulation NFE AF = 0.00553 (376/68046). AF 95% confidence interval is 0.00506. There are 0 homozygotes in GnomAd4. There are 194 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 23 AR,Unknown gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001368809.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
AMPD2	NM_001368809.2	MANE Select	c.1242C>T	p.Tyr414Tyr	synonymous	Exon 11 of 19	NP_001355738.1	Q01433-1
AMPD2	NM_004037.9		c.1242C>T	p.Tyr414Tyr	synonymous	Exon 10 of 18	NP_004028.4
AMPD2	NM_001308170.1		c.1179C>T	p.Tyr393Tyr	synonymous	Exon 9 of 17	NP_001295099.1	Q01433-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
AMPD2	ENST00000528667.7	TSL:1 MANE Select	c.1242C>T	p.Tyr414Tyr	synonymous	Exon 11 of 19	ENSP00000436541.2	Q01433-1
AMPD2	ENST00000342115.8	TSL:1	c.1161C>T	p.Tyr387Tyr	synonymous	Exon 10 of 18	ENSP00000345498.4	Q01433-2
AMPD2	ENST00000526301.6	TSL:1	n.1305C>T		non_coding_transcript_exon	Exon 10 of 18

Frequencies

GnomAD3 genomes

AF:

0.00304

AC:

462

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00116

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00131

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.000622

Gnomad FIN

AF:

0.000565

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00553

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.00294

AC:

738

AN:

251110

AF XY:

0.00296

show subpopulations

Gnomad AFR exome

AF:

0.000862

Gnomad AMR exome

AF:

0.00101

Gnomad ASJ exome

AF:

0.000596

Gnomad EAS exome

AF:

0.000272

Gnomad FIN exome

AF:

0.000974

Gnomad NFE exome

AF:

0.00560

Gnomad OTH exome

AF:

0.00229

GnomAD4 exome

AF:

0.00522

AC:

7629

AN:

1461574

Hom.:

Cov.:

AF XY:

0.00497

AC XY:

3617

AN XY:

727062

show subpopulations

African (AFR)

AF:

0.000836

AC:

AN:

33480

American (AMR)

AF:

0.00123

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.000497

AC:

AN:

26132

East Asian (EAS)

AF:

0.000126

AC:

AN:

39694

South Asian (SAS)

AF:

0.000255

AC:

AN:

86242

European-Finnish (FIN)

AF:

0.00124

AC:

AN:

53262

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00644

AC:

7162

AN:

1111906

Other (OTH)

AF:

0.00457

AC:

276

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

493

985

1478

1970

2463

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

284

568

852

1136

1420

<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:

0.00303

AC:

462

AN:

152320

Hom.:

Cov.:

AF XY:

0.00261

AC XY:

194

AN XY:

74464

show subpopulations

African (AFR)

AF:

0.00115

AC:

AN:

41564

American (AMR)

AF:

0.00131

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3472

East Asian (EAS)

AF:

0.000580

AC:

AN:

5176

South Asian (SAS)

AF:

0.000622

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.000565

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00553

AC:

376

AN:

68046

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

124

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:

0.00372

Hom.:

Bravo

AF:

0.00311

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.00485

EpiControl

AF:

0.00373

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Hereditary spastic paraplegia 63;C4014354:Pontocerebellar hypoplasia type 9 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.47

CADD

Benign

3.5

(source)

DANN

Benign

0.89

PhyloP100

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over