Genetic Variant NM_001282225.2:c.359C>G (chr22-17207254-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 4P and 4B. PM1PM2BP4_Strong

The NM_001282225.2(ADA2):c.359C>G(p.Thr120Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,148 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T120I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

ADA2
NM_001282225.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.813

Publications

0 publications found

Variant links:

Genes affected

ADA2 (HGNC:1839): (adenosine deaminase 2) This gene encodes a member of a subfamily of the adenosine deaminase protein family. The encoded protein is one of two adenosine deaminases found in humans, which regulate levels of the signaling molecule, adenosine. The encoded protein is secreted from monocytes undergoing differentiation and may regulate cell proliferation and differentiation. This gene may be responsible for some of the phenotypic features associated with cat eye syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2013]

ADA2 Gene-Disease associations (from GenCC):

deficiency of adenosine deaminase 2
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
vasculitis due to ADA2 deficiency
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, Labcorp Genetics (formerly Invitae)
polyarteritis nodosa
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
Sneddon syndrome
Inheritance: AR, AD Classification: MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
Diamond-Blackfan anemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ADA2 links:

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ACMG classification

Classification was made for transcript

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

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_001282225.2

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.056002825).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADA2	NM_001282225.2 link	c.359C>G	p.Thr120Ser	missense_variant	Exon 3 of 10	ENST00000399837.8	NP_001269154.1	Q9NZK5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADA2	ENST00000399837.8 link	c.359C>G	p.Thr120Ser	missense_variant	Exon 3 of 10	1	NM_001282225.2	ENSP00000382731.2		Q9NZK5-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459148

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725248

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33448

American (AMR)

AF:

0.00

AC:

AN:

44684

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26120

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39614

South Asian (SAS)

AF:

0.00

AC:

AN:

86214

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5618

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1109834

Other (OTH)

AF:

0.00

AC:

AN:

60218

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.058

BayesDel_addAF

Benign

-0.011

BayesDel_noAF

Benign

-0.25

CADD

Benign

0.44

(source)

DANN

Benign

0.21

DEOGEN2

Benign

0.0046

T;T;T;T;.;.;.;T

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.00046

LIST_S2

Benign

0.54

.;.;.;T;.;T;T;T

M_CAP

Benign

0.035

MetaRNN

Benign

0.056

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.48

PhyloP100

0.81

PrimateAI

Benign

0.43

PROVEAN

Benign

1.4

N;N;N;.;N;.;N;N

REVEL

Benign

0.18

Sift

Benign

1.0

T;T;T;.;T;.;T;T

Sift4G

Benign

1.0

T;T;T;.;T;.;T;.

Polyphen

0.0

B;B;B;B;.;.;.;.

Vest4

0.11

MutPred

0.56

Loss of sheet (P = 0.0037);Loss of sheet (P = 0.0037);Loss of sheet (P = 0.0037);Loss of sheet (P = 0.0037);.;.;Loss of sheet (P = 0.0037);Loss of sheet (P = 0.0037);

MVP

0.40

MPC

0.041

ClinPred

0.036

GERP RS

-0.013

Varity_R

0.035

gMVP

0.31

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over