rs137852332

Positions:

• chrX-154534389-C-G
• chrX-154534389-C-T

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM2 PM5 PP3_Strong PP5_Moderate

The NM_001360016.2(G6PD):​c.593G>C​(p.Arg198Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R198S) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 23)
• Consequence: G6PD NM_001360016.2 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2 O:1
• Conservation: PhyloP100: 5.89

Genes affected

G6PD (HGNC:4057): (glucose-6-phosphate dehydrogenase) This gene encodes glucose-6-phosphate dehydrogenase. This protein is a cytosolic enzyme encoded by a housekeeping X-linked gene whose main function is to produce NADPH, a key electron donor in the defense against oxidizing agents and in reductive biosynthetic reactions. G6PD is remarkable for its genetic diversity. Many variants of G6PD, mostly produced from missense mutations, have been described with wide ranging levels of enzyme activity and associated clinical symptoms. G6PD deficiency may cause neonatal jaundice, acute hemolysis, or severe chronic non-spherocytic hemolytic anemia. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.99
• PP5: Variant X-154534389-C-G is Pathogenic according to our data. Variant chrX-154534389-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 10394.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chrX-154534389-C-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
G6PD	NM_001360016.2	c.593G>C	p.Arg198Pro	missense_variant	6/13	ENST00000393562.10	NP_001346945.1
G6PD	NM_000402.4	c.683G>C	p.Arg228Pro	missense_variant	6/13		NP_000393.4
G6PD	NM_001042351.3	c.593G>C	p.Arg198Pro	missense_variant	6/13		NP_001035810.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
G6PD	ENST00000393562.10	c.593G>C	p.Arg198Pro	missense_variant	6/13	1	NM_001360016.2	ENSP00000377192.3

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 23

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

Anemia, nonspherocytic hemolytic, due to G6PD deficiency Pathogenic:2

Likely pathogenic, criteria provided, single submitter	curation	Dunham Lab, University of Washington	Aug 12, 2022	Variant found in hemizygote with G6PD deficiency and CNSHA (PP4). Undetectable activity in red blood cells of hemizygote and when expressed in S. cerevisiae (PS3). Not observed in gnomAD (PM2). Alters substrate binding site (PM1). Post_P 0.988 (odds of pathogenicity 729.3, Prior_P 0.1). -
Pathogenic, no assertion criteria provided	literature only	OMIM	Oct 11, 2024	- -

G6PD SANTIAGO Other:1

other, no assertion criteria provided

literature only

OMIM

Oct 11, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.71	D
BayesDel_noAF	Pathogenic	0.78
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.99	D;D;D;.;D;.;D
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.98	.;.;D;D;D;D;D
M_CAP	Pathogenic	0.50	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.97	D
MutationAssessor	Pathogenic	4.6	H;H;H;H;.;.;.
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-6.7	.;.;D;D;D;D;D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	.;.;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;.;D;D;.;.;.
Polyphen		1.0	D;D;D;.;.;.;.
Vest4		0.92
MutPred		0.98		Gain of catalytic residue at R198 (P = 0.1247);Gain of catalytic residue at R198 (P = 0.1247);Gain of catalytic residue at R198 (P = 0.1247);Gain of catalytic residue at R198 (P = 0.1247);.;.;Gain of catalytic residue at R198 (P = 0.1247);
MVP		1.0
MPC		0.86
ClinPred		1.0	D
GERP RS		4.6
Varity_R		1.0
gMVP		1.0

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

Other links and lift over

dbSNP: rs137852332; hg19: chrX-153762604;