rs121908719

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP3_Moderate

The NM_000022.4(ADA):​c.529G>T​(p.Val177Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000124 in 1,613,932 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. V177M) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ADA
NM_000022.4 missense

Scores

10
8
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.61

Publications

3 publications found
Variant links:
Genes affected
ADA (HGNC:186): (adenosine deaminase) This gene encodes an enzyme that catalyzes the hydrolysis of adenosine to inosine in the purine catabolic pathway. Various mutations have been described for this gene and have been linked to human diseases related to impaired immune function such as severe combined immunodeficiency disease (SCID) which is the result of a deficiency in the ADA enzyme. In ADA-deficient individuals there is a marked depletion of T, B, and NK lymphocytes, and consequently, a lack of both humoral and cellular immunity. Conversely, elevated levels of this enzyme are associated with congenital hemolytic anemia. [provided by RefSeq, Sep 2019]
PKIG (HGNC:9019): (cAMP-dependent protein kinase inhibitor gamma) This gene encodes a member of the protein kinase inhibitor family. Studies of a similar protein in mice suggest that this protein acts as a potent competitive cAMP-dependent protein kinase inhibitor, and is a predominant form of inhibitor in various tissues. The encoded protein may be involved in osteogenesis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr20-44624279-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 68265.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.923

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ADANM_000022.4 linkc.529G>T p.Val177Leu missense_variant Exon 6 of 12 ENST00000372874.9 NP_000013.2 P00813A0A0S2Z381
ADANM_001322051.2 linkc.529G>T p.Val177Leu missense_variant Exon 6 of 11 NP_001308980.1 F5GWI4
ADANM_001322050.2 linkc.124G>T p.Val42Leu missense_variant Exon 5 of 11 NP_001308979.1
ADANR_136160.2 linkn.621G>T non_coding_transcript_exon_variant Exon 6 of 11

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ADAENST00000372874.9 linkc.529G>T p.Val177Leu missense_variant Exon 6 of 12 1 NM_000022.4 ENSP00000361965.4 P00813
ADAENST00000696038.1 linkn.*275G>T non_coding_transcript_exon_variant Exon 6 of 9 ENSP00000512344.1 A0A8Q3SJ57
ADAENST00000696038.1 linkn.*275G>T 3_prime_UTR_variant Exon 6 of 9 ENSP00000512344.1 A0A8Q3SJ57
ADAENST00000695995.1 linkc.217-1201G>T intron_variant Intron 3 of 8 ENSP00000512318.1 A0A8Q3SI64
ADAENST00000695991.1 linkc.217-1349G>T intron_variant Intron 3 of 7 ENSP00000512314.1 A0A0S2Z3B9

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152194
Hom.:
0
Cov.:
33
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461738
Hom.:
0
Cov.:
31
AF XY:
0.00000138
AC XY:
1
AN XY:
727166
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39694
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86252
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53400
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5740
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111932
Other (OTH)
AF:
0.00
AC:
0
AN:
60390
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.375
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152194
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74354
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41442
American (AMR)
AF:
0.00
AC:
0
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4836
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68032
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
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

Genome 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

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.74
BayesDel_addAF
Pathogenic
0.42
D
BayesDel_noAF
Pathogenic
0.37
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.92
D;D
Eigen
Pathogenic
0.74
Eigen_PC
Pathogenic
0.72
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.97
D;D
M_CAP
Uncertain
0.21
D
MetaRNN
Pathogenic
0.92
D;D
MetaSVM
Pathogenic
1.0
D
MutationAssessor
Uncertain
2.5
M;.
PhyloP100
5.6
PrimateAI
Uncertain
0.52
T
PROVEAN
Uncertain
-2.6
D;D
REVEL
Pathogenic
0.84
Sift
Uncertain
0.0060
D;D
Sift4G
Uncertain
0.059
T;T
Polyphen
1.0
D;.
Vest4
0.71
MutPred
0.78
Gain of sheet (P = 0.1945);Gain of sheet (P = 0.1945);
MVP
0.99
MPC
0.59
ClinPred
0.99
D
GERP RS
5.4
Varity_R
0.83
gMVP
0.83
Mutation Taster
=17/83
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: rs121908719; hg19: chr20-43252920; API