NM_000151.4:c.432G>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_000151.4(G6PC1):c.432G>A(p.Pro144Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00421 in 1,613,148 control chromosomes in the GnomAD database, including 246 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.022 ( 126 hom., cov: 31)

Exomes 𝑓: 0.0023 ( 120 hom. )

Consequence

G6PC1
NM_000151.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: -0.442

Variant links:

Genes affected

G6PC1 (HGNC:4056): (glucose-6-phosphatase catalytic subunit 1) Glucose-6-phosphatase (G6Pase) is a multi-subunit integral membrane protein of the endoplasmic reticulum that is composed of a catalytic subunit and transporters for G6P, inorganic phosphate, and glucose. This gene (G6PC) is one of the three glucose-6-phosphatase catalytic-subunit-encoding genes in human: G6PC, G6PC2 and G6PC3. Glucose-6-phosphatase catalyzes the hydrolysis of D-glucose 6-phosphate to D-glucose and orthophosphate and is a key enzyme in glucose homeostasis, functioning in gluconeogenesis and glycogenolysis. Mutations in this gene cause glycogen storage disease type I (GSD1). This disease, also known as von Gierke disease, is a metabolic disorder characterized by severe hypoglycemia associated with the accumulation of glycogen and fat in the liver and kidneys.[provided by RefSeq, Feb 2011]

G6PC1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0032521486).

BP6

Variant 17-42907614-G-A is Benign according to our data. Variant chr17-42907614-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 214458.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-42907614-G-A is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-0.442 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0747 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
G6PC1	NM_000151.4 link	c.432G>A	p.Pro144Pro	synonymous_variant	Exon 3 of 5	ENST00000253801.7	NP_000142.2	P35575-1
G6PC1	NM_001270397.2 link	c.355G>A	p.Asp119Asn	missense_variant	Exon 3 of 5		NP_001257326.1	P35575-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
G6PC1	ENST00000253801.7 link	c.432G>A	p.Pro144Pro	synonymous_variant	Exon 3 of 5	1	NM_000151.4	ENSP00000253801.1	P35575-1
G6PC1	ENST00000592383.5 link	c.355G>A	p.Asp119Asn	missense_variant	Exon 3 of 5	2		ENSP00000465958.1	P35575-2
G6PC1	ENST00000585489.1 link	c.432G>A	p.Pro144Pro	synonymous_variant	Exon 3 of 4	5		ENSP00000466202.1	K7ELS6

Frequencies

GnomAD3 genomes

AF:

0.0222

AC:

3370

AN:

152130

Hom.:

123

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0767

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00950

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000279

Gnomad OTH

AF:

0.0139

GnomAD3 exomes

AF:

0.00584

AC:

1464

AN:

250692

Hom.:

AF XY:

0.00420

AC XY:

569

AN XY:

135462

show subpopulations

Gnomad AFR exome

AF:

0.0784

Gnomad AMR exome

AF:

0.00440

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000983

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000273

Gnomad OTH exome

AF:

0.00212

GnomAD4 exome

AF:

0.00233

AC:

3401

AN:

1460900

Hom.:

120

Cov.:

AF XY:

0.00204

AC XY:

1482

AN XY:

726756

show subpopulations

Gnomad4 AFR exome

AF:

0.0788

Gnomad4 AMR exome

AF:

0.00486

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000162

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000149

Gnomad4 OTH exome

AF:

0.00545

GnomAD4 genome

AF:

0.0223

AC:

3390

AN:

152248

Hom.:

126

Cov.:

AF XY:

0.0214

AC XY:

1593

AN XY:

74446

show subpopulations

Gnomad4 AFR

AF:

0.0769

Gnomad4 AMR

AF:

0.00949

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000279

Gnomad4 OTH

AF:

0.0137

Alfa

AF:

0.00759

Hom.:

Bravo

AF:

0.0252

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.0751

AC:

331

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.00723

AC:

878

Asia WGS

AF:

0.00664

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Jun 23, 2014

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 07, 2017

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: The G6PC c.432G>A (p.Pro144Pro) variant causes a missense change located in the Phosphatidic acid phosphatase type 2/haloperoxidase domain (IPR000326) (InterPro) involving the alteration of a non-conserved nucleotide, resulting in a synonymous change. One in silico tool predicts a polymorphism outcome for this variant. 5/5 splice prediction tools predict no significant impact on normal splicing. ESE finder predicts that this variant may affect ESE sites. However, these predictions have yet to be confirmed by functional studies. This variant was found in 2067/276430 control chromosomes in gnomAD, including 72 homozygous individuals, at a frequency of 0.0074775, which is approximately 4 times the estimated maximal expected allele frequency of a pathogenic G6PC variant (0.0017321), suggesting this variant is likely a benign polymorphism. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as benign. Taken together, this variant is classified as benign. -

Glycogen storage disease due to glucose-6-phosphatase deficiency type IA

Benign:3

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Apr 25, 2017

Natera, Inc.

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Benign:3

Apr 14, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Mar 30, 2022

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Uncertain

-0.040

CADD

Benign

3.4

DANN

Benign

0.55

FATHMM_MKL

Benign

0.020

LIST_S2

Benign

0.38

MetaRNN

Benign

0.0033

Sift4G

Benign

0.77

Vest4

0.15

MVP

0.97

GERP RS

-6.9

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