9-130466697-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_054012.4(ASS1):​c.421-28C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00158 in 1,610,460 control chromosomes in the GnomAD database, including 43 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0022 ( 4 hom., cov: 33)
Exomes 𝑓: 0.0015 ( 39 hom. )

Consequence

ASS1
NM_054012.4 intron

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.304
Variant links:
Genes affected
ASS1 (HGNC:758): (argininosuccinate synthase 1) The protein encoded by this gene catalyzes the penultimate step of the arginine biosynthetic pathway. There are approximately 10 to 14 copies of this gene including the pseudogenes scattered across the human genome, among which the one located on chromosome 9 appears to be the only functional gene for argininosuccinate synthetase. Mutations in the chromosome 9 copy of this gene cause citrullinemia. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Aug 2012]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant 9-130466697-C-T is Benign according to our data. Variant chr9-130466697-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 254746.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00216 (329/152366) while in subpopulation EAS AF= 0.0365 (189/5184). AF 95% confidence interval is 0.0322. There are 4 homozygotes in gnomad4. There are 180 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ASS1NM_054012.4 linkuse as main transcriptc.421-28C>T intron_variant ENST00000352480.10 NP_446464.1 P00966Q5T6L4
ASS1NM_000050.4 linkuse as main transcriptc.421-28C>T intron_variant NP_000041.2 P00966Q5T6L4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ASS1ENST00000352480.10 linkuse as main transcriptc.421-28C>T intron_variant 1 NM_054012.4 ENSP00000253004.6 P00966

Frequencies

GnomAD3 genomes
AF:
0.00216
AC:
329
AN:
152248
Hom.:
4
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00219
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000916
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.0364
Gnomad SAS
AF:
0.00248
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000220
Gnomad OTH
AF:
0.00334
GnomAD3 exomes
AF:
0.00343
AC:
859
AN:
250620
Hom.:
13
AF XY:
0.00329
AC XY:
447
AN XY:
135692
show subpopulations
Gnomad AFR exome
AF:
0.00216
Gnomad AMR exome
AF:
0.000319
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0381
Gnomad SAS exome
AF:
0.00186
Gnomad FIN exome
AF:
0.0000463
Gnomad NFE exome
AF:
0.000389
Gnomad OTH exome
AF:
0.00180
GnomAD4 exome
AF:
0.00152
AC:
2218
AN:
1458094
Hom.:
39
Cov.:
30
AF XY:
0.00160
AC XY:
1163
AN XY:
725708
show subpopulations
Gnomad4 AFR exome
AF:
0.00162
Gnomad4 AMR exome
AF:
0.000313
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0353
Gnomad4 SAS exome
AF:
0.00246
Gnomad4 FIN exome
AF:
0.000151
Gnomad4 NFE exome
AF:
0.000298
Gnomad4 OTH exome
AF:
0.00330
GnomAD4 genome
AF:
0.00216
AC:
329
AN:
152366
Hom.:
4
Cov.:
33
AF XY:
0.00242
AC XY:
180
AN XY:
74504
show subpopulations
Gnomad4 AFR
AF:
0.00219
Gnomad4 AMR
AF:
0.000915
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.0365
Gnomad4 SAS
AF:
0.00248
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000220
Gnomad4 OTH
AF:
0.00331
Alfa
AF:
0.000970
Hom.:
0
Bravo
AF:
0.00218
Asia WGS
AF:
0.0150
AC:
52
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:1
Benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxJun 17, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
0.85
DANN
Benign
0.56

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.

Other links and lift over

dbSNP: rs76169404; hg19: chr9-133342084; COSMIC: COSV61688397; API