Genetic Variant AK2:p.Arg17Arg (chr1-33036780-G-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_ModerateBP6_ModerateBP7

The NM_001625.4(AK2):c.49C>A(p.Arg17Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000276 in 1,447,540 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 Likely benign (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000028 ( 0 hom. )

Consequence

AK2
NM_001625.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.25

Publications

3 publications found

Variant links:

Genes affected

AK2 (HGNC:362): (adenylate kinase 2) Adenylate kinases are involved in regulating the adenine nucleotide composition within a cell by catalyzing the reversible transfer of phosphate groups among adenine nucleotides. Three isozymes of adenylate kinase, namely 1, 2, and 3, have been identified in vertebrates; this gene encodes isozyme 2. Expression of these isozymes is tissue-specific and developmentally regulated. Isozyme 2 is localized in the mitochondrial intermembrane space and may play a role in apoptosis. Mutations in this gene are the cause of reticular dysgenesis. Alternate splicing results in multiple transcript variants. Pseudogenes of this gene are found on chromosomes 1 and 2.[provided by RefSeq, Nov 2010]

AK2 Gene-Disease associations (from GenCC):

reticular dysgenesis
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, Orphanet, G2P

AK2 links:

ENSG00000236065 (HGNC:58388):

ENSG00000236065 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.39).

BP6

Variant 1-33036780-G-T is Benign according to our data. Variant chr1-33036780-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2899401.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=3.25 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AK2	NM_001625.4 link	c.49C>A	p.Arg17Arg	synonymous_variant	Exon 1 of 6	ENST00000672715.1	NP_001616.1	P54819-1A0A140VK93

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AK2	ENST00000672715.1 link	c.49C>A	p.Arg17Arg	synonymous_variant	Exon 1 of 6		NM_001625.4	ENSP00000499935.1		P54819-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000133

AC:

AN:

225300

AF XY:

0.00000818

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000924

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000276

AC:

AN:

1447540

Hom.:

Cov.:

AF XY:

0.00000278

AC XY:

AN XY:

718742

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33240

American (AMR)

AF:

0.0000927

AC:

AN:

43140

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25784

East Asian (EAS)

AF:

0.00

AC:

AN:

39208

South Asian (SAS)

AF:

0.00

AC:

AN:

83950

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52088

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4686

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1105744

Other (OTH)

AF:

0.00

AC:

AN:

59700

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.438

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

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Reticular dysgenesis

Benign:1

May 09, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.39

CADD

Benign

(source)

DANN

Benign

0.93

PhyloP100

3.3

PromoterAI

-0.096

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=82/18

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over