Genetic Variant BPGM:p.Arg90Leu (chr7-134661776-G-T) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1PM2PM5PP3_Strong

The NM_001724.5(BPGM):c.269G>T(p.Arg90Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,846 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R90C) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

BPGM
NM_001724.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.94

Variant links:

Genes affected

BPGM (HGNC:1093): (bisphosphoglycerate mutase) 2,3-diphosphoglycerate (2,3-DPG) is a small molecule found at high concentrations in red blood cells where it binds to and decreases the oxygen affinity of hemoglobin. This gene encodes a multifunctional enzyme that catalyzes 2,3-DPG synthesis via its synthetase activity, and 2,3-DPG degradation via its phosphatase activity. The enzyme also has phosphoglycerate phosphomutase activity. Deficiency of this enzyme increases the affinity of cells for oxygen. Mutations in this gene result in hemolytic anemia. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Sep 2009]

BPGM links:

LOC124901750 (HGNC:):

LOC124901750 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PM1

In a chain Bisphosphoglycerate mutase (size 257) in uniprot entity PMGE_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_001724.5

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr7-134661775-C-T is described in Lovd as [Pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.981

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BPGM	NM_001724.5 link	c.269G>T	p.Arg90Leu	missense_variant	Exon 2 of 3	ENST00000344924.8	NP_001715.1	P07738A0A024R782

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
BPGM	ENST00000344924.8 link	c.269G>T	p.Arg90Leu	missense_variant	Exon 2 of 3	1	NM_001724.5	ENSP00000342032.3	P07738
BPGM	ENST00000393132.2 link	c.269G>T	p.Arg90Leu	missense_variant	Exon 3 of 4	5		ENSP00000376840.2	P07738
BPGM	ENST00000418040.5 link	c.269G>T	p.Arg90Leu	missense_variant	Exon 3 of 4	5		ENSP00000399838.1	P07738
BPGM	ENST00000443095.1 link	c.*35G>T		downstream_gene_variant		4		ENSP00000403050.1	C9JH23

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251026

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135640

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727220

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.34

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.53

D;D;D

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

1.0

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

.;.;D

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.98

D;D;D

MetaSVM

Uncertain

0.35

MutationAssessor

Pathogenic

3.1

M;M;M

PrimateAI

Pathogenic

0.79

PROVEAN

Pathogenic

-6.9

D;D;D

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.91

MutPred

0.91

Loss of MoRF binding (P = 0.028);Loss of MoRF binding (P = 0.028);Loss of MoRF binding (P = 0.028);

MVP

0.98

MPC

1.1

ClinPred

1.0

GERP RS

6.0

Varity_R

0.98

gMVP

0.97

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over