19-34365282-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_ModerateBS1_SupportingBS2_Supporting

The NM_000175.5(GPI):c.16C>T(p.Arg6Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000564 in 1,578,674 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000059 ( 0 hom. )

Consequence

GPI
NM_000175.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.420

Variant links:

Genes affected

GPI (HGNC:4458): (glucose-6-phosphate isomerase) This gene encodes a member of the glucose phosphate isomerase protein family. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. In the cytoplasm, the gene product functions as a glycolytic enzyme (glucose-6-phosphate isomerase) that interconverts glucose-6-phosphate and fructose-6-phosphate. Extracellularly, the encoded protein (also referred to as neuroleukin) functions as a neurotrophic factor that promotes survival of skeletal motor neurons and sensory neurons, and as a lymphokine that induces immunoglobulin secretion. The encoded protein is also referred to as autocrine motility factor based on an additional function as a tumor-secreted cytokine and angiogenic factor. Defects in this gene are the cause of nonspherocytic hemolytic anemia and a severe enzyme deficiency can be associated with hydrops fetalis, immediate neonatal death and neurological impairment. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2016]

GPI links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.17444772).

BS1

Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.0000589 (84/1426476) while in subpopulation EAS AF= 0.00133 (48/36088). AF 95% confidence interval is 0.00103. There are 0 homozygotes in gnomad4_exome. There are 42 alleles in male gnomad4_exome subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 5 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPI	NM_000175.5 link	c.16C>T	p.Arg6Trp	missense_variant	Exon 1 of 18	ENST00000356487.11	NP_000166.2	P06744-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPI	ENST00000356487.11 link	c.16C>T	p.Arg6Trp	missense_variant	Exon 1 of 18	1	NM_000175.5	ENSP00000348877.3		P06744-1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000577

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

GnomAD3 exomes

AF:

0.0000995

AC:

AN:

221038

Hom.:

AF XY:

0.000107

AC XY:

AN XY:

121372

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00116

Gnomad SAS exome

AF:

0.000180

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000589

AC:

AN:

1426476

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

710224

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00133

Gnomad4 SAS exome

AF:

0.000253

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000911

Gnomad4 OTH exome

AF:

0.0000852

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74418

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000579

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000491

ExAC

AF:

0.000116

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jul 02, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.16C>T (p.R6W) alteration is located in exon 1 (coding exon 1) of the GPI gene. This alteration results from a C to T substitution at nucleotide position 16, causing the arginine (R) at amino acid position 6 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Hemolytic anemia due to glucophosphate isomerase deficiency

Uncertain:1

Mar 15, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.056

.;.;T;.;.;.;T;D;T;T;.;D

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.27

FATHMM_MKL

Benign

0.68

LIST_S2

Pathogenic

0.98

D;D;.;D;D;D;.;.;.;.;D;D

M_CAP

Pathogenic

0.99

MetaRNN

Benign

0.17

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

-0.048

MutationAssessor

Benign

1.5

.;.;.;.;.;.;.;L;.;.;.;L

PrimateAI

Benign

0.38

PROVEAN

Uncertain

-2.4

.;.;.;.;N;.;.;.;.;.;.;N

REVEL

Benign

0.22

Sift

Pathogenic

0.0

.;.;.;.;D;.;.;.;.;.;.;D

Sift4G

Uncertain

0.0060

D;D;D;.;D;.;D;.;D;D;D;D

Polyphen

0.0

.;.;.;.;.;.;.;B;.;.;.;B

Vest4

0.31, 0.26

MVP

0.92

MPC

0.82

ClinPred

0.20

GERP RS

2.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.3

Varity_R

0.21

gMVP

0.31

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