rs587777240

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1PM2PM5PP3

The NM_001282225.2(ADA2):​c.326C>T​(p.Ala109Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,448,016 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. A109D) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

ADA2
NM_001282225.2 missense

Scores

4
12
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.93

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM1
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_001282225.2
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr22-17207287-G-T is described in ClinVar as Pathogenic. ClinVar VariationId is 120300.Status of the report is no_assertion_criteria_provided, 0 stars.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.758

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ADA2NM_001282225.2 linkc.326C>T p.Ala109Val 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
ADA2ENST00000399837.8 linkc.326C>T p.Ala109Val missense_variant Exon 3 of 10 1 NM_001282225.2 ENSP00000382731.2 Q9NZK5-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.91e-7
AC:
1
AN:
1448016
Hom.:
0
Cov.:
30
AF XY:
0.00000139
AC XY:
1
AN XY:
717578
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33244
American (AMR)
AF:
0.00
AC:
0
AN:
44532
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25974
East Asian (EAS)
AF:
0.0000254
AC:
1
AN:
39332
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85906
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53288
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5096
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1100984
Other (OTH)
AF:
0.00
AC:
0
AN:
59660
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.69
BayesDel_addAF
Uncertain
0.13
D
BayesDel_noAF
Uncertain
-0.060
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Benign
0.37
T;T;T;T;.;.;.;T
Eigen
Uncertain
0.53
Eigen_PC
Uncertain
0.44
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Uncertain
0.95
.;.;.;D;.;D;D;D
M_CAP
Pathogenic
0.32
D
MetaRNN
Pathogenic
0.76
D;D;D;D;D;D;D;D
MetaSVM
Uncertain
0.54
D
PhyloP100
2.9
PrimateAI
Uncertain
0.50
T
PROVEAN
Uncertain
-3.3
D;D;D;.;D;.;D;D
REVEL
Pathogenic
0.77
Sift
Uncertain
0.010
D;D;D;.;D;.;D;D
Sift4G
Uncertain
0.017
D;D;D;.;D;.;D;.
Polyphen
1.0
D;D;D;D;.;.;.;.
Vest4
0.68
MutPred
0.64
Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);.;.;Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);
MVP
0.92
MPC
0.23
ClinPred
0.99
D
GERP RS
3.5
Varity_R
0.75
gMVP
0.82
Mutation Taster
=34/66
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs587777240; hg19: chr22-17688177; COSMIC: COSV52831012; API