Genetic Variant PFKM:c.160-44A>G (chr12-48131272-A-G) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000289.6(PFKM):c.160-44A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00152 in 1,342,366 control chromosomes in the GnomAD database, including 28 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0072 ( 15 hom., cov: 32)

Exomes 𝑓: 0.00079 ( 13 hom. )

Consequence

PFKM
NM_000289.6 intron

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.459

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 12-48131272-A-G is Benign according to our data. Variant chr12-48131272-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 255752.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00718 (1093/152322) while in subpopulation AFR AF = 0.0251 (1043/41566). AF 95% confidence interval is 0.0238. There are 15 homozygotes in GnomAd4. There are 504 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 15 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PFKM	NM_000289.6 link	c.160-44A>G		intron_variant	Intron 3 of 22	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.160-44A>G		intron_variant	Intron 3 of 22	1	NM_000289.6	ENSP00000352842.5		P08237-1

Frequencies

GnomAD3 genomes

AF:

0.00720

AC:

1096

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0252

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00177

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00574

GnomAD2 exomes

AF:

0.00204

AC:

513

AN:

250998

AF XY:

0.00171

show subpopulations

Gnomad AFR exome

AF:

0.0291

Gnomad AMR exome

AF:

0.000926

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000617

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000793

AC:

944

AN:

1190044

Hom.:

Cov.:

AF XY:

0.000674

AC XY:

408

AN XY:

604978

show subpopulations

African (AFR)

AF:

0.0279

AC:

787

AN:

28242

American (AMR)

AF:

0.00117

AC:

AN:

44402

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24460

East Asian (EAS)

AF:

0.00

AC:

AN:

38438

South Asian (SAS)

AF:

0.0000248

AC:

AN:

80790

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53282

Middle Eastern (MID)

AF:

0.000574

AC:

AN:

5230

European-Non Finnish (NFE)

AF:

0.0000324

AC:

AN:

863940

Other (OTH)

AF:

0.00140

AC:

AN:

51260

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

112

167

223

279

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00718

AC:

1093

AN:

152322

Hom.:

Cov.:

AF XY:

0.00677

AC XY:

504

AN XY:

74486

show subpopulations

African (AFR)

AF:

0.0251

AC:

1043

AN:

41566

American (AMR)

AF:

0.00177

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.000207

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68034

Other (OTH)

AF:

0.00568

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

148

198

247

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00351

Hom.:

Bravo

AF:

0.00873

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Oct 02, 2018

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

6.6

(source)

DANN

Benign

0.72

PhyloP100

0.46

Mutation Taster

=100/0

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over