Genetic Variant PFKM:p.Val435Leu (chr12-48140833-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000289.6(PFKM):c.1303G>C(p.Val435Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,876 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. V435I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PFKM
NM_000289.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 8.14

Publications

0 publications found

Variant links:

Genes affected

PFKM (HGNC:8877): (phosphofructokinase, muscle) Three phosphofructokinase isozymes exist in humans: muscle, liver and platelet. These isozymes function as subunits of the mammalian tetramer phosphofructokinase, which catalyzes the phosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate. Tetramer composition varies depending on tissue type. This gene encodes the muscle-type isozyme. Mutations in this gene have been associated with glycogen storage disease type VII, also known as Tarui disease. Alternatively spliced transcript variants have been described.[provided by RefSeq, Nov 2009]

PFKM Gene-Disease associations (from GenCC):

glycogen storage disease VII
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, PanelApp Australia, Ambry Genetics

PFKM links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PFKM	NM_000289.6 link	c.1303G>C	p.Val435Leu	missense_variant	Exon 14 of 23	ENST00000359794.11	NP_000280.1	P08237-1A0A024R0Y5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PFKM	ENST00000359794.11 link	c.1303G>C	p.Val435Leu	missense_variant	Exon 14 of 23	1	NM_000289.6	ENSP00000352842.5		P08237-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727240

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112010

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Uncertain

0.082

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.52

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

Eigen

Uncertain

0.21

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

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

M_CAP

Benign

0.037

MetaRNN

Uncertain

0.58

D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.36

MutationAssessor

Benign

1.1

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

PhyloP100

8.1

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-1.4

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

REVEL

Uncertain

0.45

Sift

Uncertain

0.0020

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

Sift4G

Uncertain

0.0040

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

Polyphen

0.074

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

Vest4

0.51, 0.49, 0.49, 0.46, 0.49

MutPred

0.69

Loss of MoRF binding (P = 0.1026);Loss of MoRF binding (P = 0.1026);.;.;.;Loss of MoRF binding (P = 0.1026);Loss of MoRF binding (P = 0.1026);.;Loss of MoRF binding (P = 0.1026);Loss of MoRF binding (P = 0.1026);.;

MVP

0.76

MPC

0.68

ClinPred

0.82

GERP RS

5.3

Varity_R

0.69

gMVP

0.94

Mutation Taster

=82/18

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over