rs142448820

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_000048.4(ASL):​c.309G>A​(p.Thr103Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000294 in 1,613,718 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. T103T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0012 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00019 ( 0 hom. )

Consequence

ASL
NM_000048.4 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -5.03

Publications

0 publications found
Variant links:
Genes affected
ASL (HGNC:746): (argininosuccinate lyase) This gene encodes a member of the lyase 1 family. The encoded protein forms a cytosolic homotetramer and primarily catalyzes the reversible hydrolytic cleavage of argininosuccinate into arginine and fumarate, an essential step in the liver in detoxifying ammonia via the urea cycle. Mutations in this gene result in the autosomal recessive disorder argininosuccinic aciduria, or argininosuccinic acid lyase deficiency. A nontranscribed pseudogene is also located on the long arm of chromosome 22. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
ASL Gene-Disease associations (from GenCC):
  • argininosuccinic aciduria
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Myriad Women’s Health, G2P, ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.77).
BP6
Variant 7-66082897-G-A is Benign according to our data. Variant chr7-66082897-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 389364.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-5.03 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00124 (189/152148) while in subpopulation AFR AF = 0.00383 (159/41522). AF 95% confidence interval is 0.00334. There are 0 homozygotes in GnomAd4. There are 85 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ASLNM_000048.4 linkc.309G>A p.Thr103Thr synonymous_variant Exon 5 of 17 ENST00000304874.14 NP_000039.2
ASLNM_001024943.2 linkc.309G>A p.Thr103Thr synonymous_variant Exon 4 of 16 NP_001020114.1
ASLNM_001024944.2 linkc.309G>A p.Thr103Thr synonymous_variant Exon 4 of 15 NP_001020115.1
ASLNM_001024946.2 linkc.309G>A p.Thr103Thr synonymous_variant Exon 4 of 15 NP_001020117.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ASLENST00000304874.14 linkc.309G>A p.Thr103Thr synonymous_variant Exon 5 of 17 1 NM_000048.4 ENSP00000307188.9

Frequencies

GnomAD3 genomes
AF:
0.00125
AC:
190
AN:
152030
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00386
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000721
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000580
Gnomad SAS
AF:
0.00124
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.0000883
Gnomad OTH
AF:
0.00144
GnomAD2 exomes
AF:
0.000447
AC:
112
AN:
250524
AF XY:
0.000427
show subpopulations
Gnomad AFR exome
AF:
0.00365
Gnomad AMR exome
AF:
0.000405
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000442
Gnomad OTH exome
AF:
0.000327
GnomAD4 exome
AF:
0.000195
AC:
285
AN:
1461570
Hom.:
0
Cov.:
31
AF XY:
0.000213
AC XY:
155
AN XY:
727066
show subpopulations
African (AFR)
AF:
0.00305
AC:
102
AN:
33478
American (AMR)
AF:
0.000403
AC:
18
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.000101
AC:
4
AN:
39698
South Asian (SAS)
AF:
0.000893
AC:
77
AN:
86250
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53188
Middle Eastern (MID)
AF:
0.000175
AC:
1
AN:
5716
European-Non Finnish (NFE)
AF:
0.0000567
AC:
63
AN:
1112002
Other (OTH)
AF:
0.000331
AC:
20
AN:
60382
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.476
Heterozygous variant carriers
0
20
40
61
81
101
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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
AF:
0.00124
AC:
189
AN:
152148
Hom.:
0
Cov.:
32
AF XY:
0.00114
AC XY:
85
AN XY:
74390
show subpopulations
African (AFR)
AF:
0.00383
AC:
159
AN:
41522
American (AMR)
AF:
0.000720
AC:
11
AN:
15272
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.000582
AC:
3
AN:
5158
South Asian (SAS)
AF:
0.00124
AC:
6
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10606
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.0000883
AC:
6
AN:
67976
Other (OTH)
AF:
0.00142
AC:
3
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.503
Heterozygous variant carriers
0
8
16
23
31
39
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000671
Hom.:
0
Bravo
AF:
0.00141
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Apr 01, 2022
CeGaT Center for Human Genetics Tuebingen
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

ASL: BP4, BP7 -

Apr 01, 2019
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Argininosuccinate lyase deficiency Benign:1
Oct 23, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.77
CADD
Benign
0.20
DANN
Benign
0.82
PhyloP100
-5.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Mutation Taster
=99/1
polymorphism

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: rs142448820; hg19: chr7-65547884; API