rs3756780

Positions:

• chr6-131571912-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000672233.1(ARG1):​c.77-7199T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0324 in 152,240 control chromosomes in the GnomAD database, including 162 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.032 (162 hom., cov: 32)
• Consequence: ARG1 ENST00000672233.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.154

Genes affected

ARG1 (HGNC:663): (arginase 1) Arginase catalyzes the hydrolysis of arginine to ornithine and urea. At least two isoforms of mammalian arginase exist (types I and II) which differ in their tissue distribution, subcellular localization, immunologic crossreactivity and physiologic function. The type I isoform encoded by this gene, is a cytosolic enzyme and expressed predominantly in the liver as a component of the urea cycle. Inherited deficiency of this enzyme results in argininemia, an autosomal recessive disorder characterized by hyperammonemia. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.136 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARG1	ENST00000672233.1	c.77-7199T>C		intron_variant
ARG1	ENST00000673234.1	c.77-4751T>C		intron_variant, NMD_transcript_variant
ARG1	ENST00000672052.1	n.305-4751T>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes AF: 0.0325 AC: 4939 AN: 152122 Hom.: 163 Cov.: 32

Gnomad AFR AF: 0.00690

Gnomad AMI AF: 0.0197

Gnomad AMR AF: 0.0592

Gnomad ASJ AF: 0.0187

Gnomad EAS AF: 0.145

Gnomad SAS AF: 0.0217

Gnomad FIN AF: 0.0744

Gnomad MID AF: 0.0127

Gnomad NFE AF: 0.0286

Gnomad OTH AF: 0.0339

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0324 AC: 4937 AN: 152240 Hom.: 162 Cov.: 32 AF XY: 0.0356 AC XY: 2650 AN XY: 74424

Gnomad4 AFR AF: 0.00688

Gnomad4 AMR AF: 0.0590

Gnomad4 ASJ AF: 0.0187

Gnomad4 EAS AF: 0.145

Gnomad4 SAS AF: 0.0217

Gnomad4 FIN AF: 0.0744

Gnomad4 NFE AF: 0.0286

Gnomad4 OTH AF: 0.0350

Alfa AF: 0.0321 Hom.: 12

Bravo AF: 0.0310

Asia WGS AF: 0.101 AC: 348 AN: 3472

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	5.7
DANN	Benign	0.72

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs3756780; hg19: chr6-131893052;