Genetic Variant G6PC3:p.Gln272Pro (chr17-44075817-A-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_138387.4(G6PC3):c.815A>C(p.Gln272Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q272R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Consequence

G6PC3
NM_138387.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.46

Publications

4 publications found

Variant links:

Genes affected

G6PC3 (HGNC:24861): (glucose-6-phosphatase catalytic subunit 3) This gene encodes the catalytic subunit of glucose-6-phosphatase (G6Pase). G6Pase is located in the endoplasmic reticulum (ER) and catalyzes the hydrolysis of glucose-6-phosphate to glucose and phosphate in the last step of the gluconeogenic and glycogenolytic pathways. Mutations in this gene result in autosomal recessive severe congenital neutropenia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

G6PC3 Gene-Disease associations (from GenCC):

autosomal recessive severe congenital neutropenia due to G6PC3 deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet

G6PC3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18236646).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_138387.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
G6PC3	NM_138387.4	MANE Select	c.815A>C	p.Gln272Pro	missense	Exon 6 of 6	NP_612396.1
G6PC3	NM_001384165.1		c.470A>C	p.Gln157Pro	missense	Exon 6 of 6	NP_001371094.1
G6PC3	NM_001384166.1		c.470A>C	p.Gln157Pro	missense	Exon 7 of 7	NP_001371095.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
G6PC3	ENST00000269097.9	TSL:1 MANE Select	c.815A>C	p.Gln272Pro	missense	Exon 6 of 6	ENSP00000269097.3
G6PC3	ENST00000588558.6	TSL:1	n.*790A>C		non_coding_transcript_exon	Exon 7 of 7	ENSP00000467624.1
G6PC3	ENST00000588558.6	TSL:1	n.*790A>C		3_prime_UTR	Exon 7 of 7	ENSP00000467624.1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41430

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.000193

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.064

BayesDel_noAF

Benign

-0.33

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.31

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.058

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.60

M_CAP

Benign

0.031

MetaRNN

Benign

0.18

MetaSVM

Benign

-0.70

MutationAssessor

Benign

1.4

PhyloP100

1.5

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.3

REVEL

Benign

0.13

Sift

Benign

0.10

Sift4G

Benign

0.24

Polyphen

0.0010

Vest4

0.33

MutPred

0.37

Loss of helix (P = 0.0237)

MVP

0.70

MPC

0.36

ClinPred

0.17

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.21

gMVP

0.72

Mutation Taster

=71/29

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over