20-44619862-A-T
Variant names:
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_StrongPM2
The ENST00000695956.1(ADA):c.233-2T>A variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
ADA
ENST00000695956.1 splice_acceptor, intron
ENST00000695956.1 splice_acceptor, intron
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.30
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]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PVS1
Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.9015958 fraction of the gene.
PM2
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ADA | NM_000022.4 | c.1079-15T>A | intron_variant | Intron 11 of 11 | ENST00000372874.9 | NP_000013.2 | ||
ADA | NM_001322051.2 | c.1007-15T>A | intron_variant | Intron 10 of 10 | NP_001308980.1 | |||
ADA | NM_001322050.2 | c.674-15T>A | intron_variant | Intron 10 of 10 | NP_001308979.1 | |||
ADA | NR_136160.2 | n.1106-15T>A | intron_variant | Intron 10 of 10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
ADA | ENST00000372874.9 | c.1079-15T>A | intron_variant | Intron 11 of 11 | 1 | NM_000022.4 | ENSP00000361965.4 | |||
ADA | ENST00000695995.1 | c.689-15T>A | intron_variant | Intron 8 of 8 | ENSP00000512318.1 | |||||
ADA | ENST00000695991.1 | c.617-15T>A | intron_variant | Intron 7 of 7 | ENSP00000512314.1 | |||||
ADA | ENST00000695956.1 | c.233-2T>A | splice_acceptor_variant, intron_variant | Intron 2 of 2 | ENSP00000512285.1 | |||||
ADA | ENST00000696038.1 | n.*1272T>A | non_coding_transcript_exon_variant | Exon 9 of 9 | ENSP00000512344.1 | |||||
ADA | ENST00000696038.1 | n.*1272T>A | 3_prime_UTR_variant | Exon 9 of 9 | ENSP00000512344.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
SCID due to ADA deficiency, delayed onset Pathogenic:1
Feb 01, 2002
OMIM
Significance: Pathogenic
Review Status: no assertion criteria provided
Collection Method: literature only
- -
Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-negative, due to adenosine deaminase deficiency Uncertain:1
Mar 17, 2024
Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: research
- -
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AG_spliceai
Position offset: -2
DS_AL_spliceai
Position offset: -15
Find out detailed SpliceAI scores and Pangolin per-transcript scores at