rs761937276

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP5

The NM_000026.4(ADSL):c.563G>A(p.Arg188His) variant causes a missense change. The variant allele was found at a frequency of 0.00000889 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

ADSL
NM_000026.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 7.14

Variant links:

Genes affected

ADSL (HGNC:291): (adenylosuccinate lyase) The protein encoded by this gene belongs to the lyase 1 family. It is an essential enzyme involved in purine metabolism, and catalyzes two non-sequential reactions in the de novo purine biosynthetic pathway: the conversion of succinylaminoimidazole carboxamide ribotide (SAICAR) to aminoimidazole carboxamide ribotide (AICAR) and the conversion of adenylosuccinate (S-AMP) to adenosine monophosphate (AMP). Mutations in this gene are associated with adenylosuccinase deficiency (ADSLD), a disorder marked with psychomotor retardation, epilepsy or autistic features. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2015]

ADSL links:

ENSG00000284431 (HGNC:):

ENSG00000284431 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 22-40358944-G-A is Pathogenic according to our data. Variant chr22-40358944-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 393034.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADSL	NM_000026.4 link	c.563G>A	p.Arg188His	missense_variant	Exon 5 of 13	ENST00000623063.3	NP_000017.1	P30566-1X5D8S6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ADSL	ENST00000623063.3 link	c.563G>A	p.Arg188His	missense_variant	Exon 5 of 13	1	NM_000026.4	ENSP00000485525.1	P30566-1
ENSG00000284431	ENST00000639722.1 link	n.*259G>A		non_coding_transcript_exon_variant	Exon 4 of 31	5		ENSP00000492828.1	A0A1W2PRX2
ENSG00000284431	ENST00000639722.1 link	n.*259G>A		3_prime_UTR_variant	Exon 4 of 31	5		ENSP00000492828.1	A0A1W2PRX2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251462

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135908

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00000899

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

May 24, 2024

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 34426522, 28492532, 31164858) -

Adenylosuccinate lyase deficiency

Uncertain:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 188 of the ADSL protein (p.Arg188His). This variant is present in population databases (rs761937276, gnomAD 0.006%). This missense change has been observed in individual(s) with West syndrome (PMID: 31164858). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 393034). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt ADSL protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Uncertain

0.073

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.033

T;D;.;T;T;T;T;.

Eigen

Benign

-0.054

Eigen_PC

Benign

0.050

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

D;D;D;D;D;D;D;D

M_CAP

Pathogenic

0.39

MetaRNN

Uncertain

0.58

D;D;D;D;D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Benign

1.9

.;M;M;.;.;.;.;.

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.6

.;.;D;.;.;.;.;.

REVEL

Uncertain

0.53

Sift

Benign

0.35

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

Sift4G

Benign

0.64

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

Polyphen

0.41, 0.15

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

Vest4

0.73, 0.71, 0.70

MutPred

0.52

.;.;.;.;Loss of MoRF binding (P = 0.025);.;.;.;

MVP

0.99

MPC

0.45

ClinPred

0.68

GERP RS

5.0

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.1

Varity_R

0.56

gMVP

0.88

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over