Genetic Variant AMPD3:c.22+4148T>C (chr11-10455191-T-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000480.3(AMPD3):c.22+4148T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000244 in 985,316 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

AMPD3
NM_000480.3 intron

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.24

Publications

0 publications found

Variant links:

Genes affected

AMPD3 (HGNC:470): (adenosine monophosphate deaminase 3) This gene encodes a member of the AMP deaminase gene family. The encoded protein is a highly regulated enzyme that catalyzes the hydrolytic deamination of adenosine monophosphate to inosine monophosphate, a branch point in the adenylate catabolic pathway. This gene encodes the erythrocyte (E) isoforms, whereas other family members encode isoforms that predominate in muscle (M) and liver (L) cells. Mutations in this gene lead to the clinically asymptomatic, autosomal recessive condition erythrocyte AMP deaminase deficiency. Alternatively spliced transcript variants encoding different isoforms of this gene have been described. [provided by RefSeq, Jul 2008]

AMPD3 Gene-Disease associations (from GenCC):

adenosine monophosphate deaminase deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

AMPD3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.53).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000480.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
AMPD3	NM_000480.3		c.22+4148T>C	intron	N/A	NP_000471.1	Q01432-4
AMPD3	NM_001172431.2		c.-278+4676T>C	intron	N/A	NP_001165902.1	Q01432-6
AMPD3	NM_001025389.2	MANE Select	c.-263T>C	upstream_gene	N/A	NP_001020560.1	Q01432-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
AMPD3	ENST00000396554.7	TSL:1	c.22+4148T>C	intron	N/A	ENSP00000379802.3	Q01432-4
AMPD3	ENST00000524866.5	TSL:1	c.-114-149T>C	intron	N/A	ENSP00000433284.1	E9PLK6
AMPD3	ENST00000534047.5	TSL:1	n.22+4148T>C	intron	N/A	ENSP00000433937.1	E9PIR5

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152186

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000252

AC:

AN:

833130

Hom.:

Cov.:

AF XY:

0.0000208

AC XY:

AN XY:

384738

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

15788

American (AMR)

AF:

0.00

AC:

AN:

984

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

5152

East Asian (EAS)

AF:

0.00

AC:

AN:

3630

South Asian (SAS)

AF:

0.00

AC:

AN:

16460

European-Finnish (FIN)

AF:

0.00

AC:

AN:

282

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1620

European-Non Finnish (NFE)

AF:

0.0000262

AC:

AN:

761912

Other (OTH)

AF:

0.0000366

AC:

AN:

27302

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

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:

0.0000197

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74346

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

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:

0.00

Hom.:

Bravo

AF:

0.0000264

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Erythrocyte AMP deaminase deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.53

CADD

Benign

(source)

DANN

Benign

0.82

PhyloP100

1.2

PromoterAI

-0.057

Neutral

(source)

Splicing

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