Genetic Variant NM_003837.4:c.779G>C (chr9-94563388-C-G) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_003837.4(FBP2):c.779G>C(p.Gly260Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,838 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

FBP2
NM_003837.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.65

Variant links:

Genes affected

FBP2 (HGNC:3607): (fructose-bisphosphatase 2) This gene encodes a gluconeogenesis regulatory enzyme which catalyzes the hydrolysis of fructose 1,6-bisphosphate to fructose 6-phosphate and inorganic phosphate. [provided by RefSeq, Jul 2008]

FBP2 links:

PCAT7 (HGNC:48824): (prostate cancer associated transcript 7)

PCAT7 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.984

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FBP2	NM_003837.4 link	c.779G>C	p.Gly260Ala	missense_variant	Exon 6 of 7	ENST00000375337.4	NP_003828.2	O00757

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FBP2	ENST00000375337.4 link	c.779G>C	p.Gly260Ala	missense_variant	Exon 6 of 7	1	NM_003837.4	ENSP00000364486.3	O00757
PCAT7	ENST00000452148.3 link	n.442-4002C>G		intron_variant	Intron 2 of 2	2
PCAT7	ENST00000644721.1 link	n.448-4002C>G		intron_variant	Intron 2 of 2
PCAT7	ENST00000647389.1 link	n.441+4236C>G		intron_variant	Intron 2 of 8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251330

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135848

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461838

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727226

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.779G>C (p.G260A) alteration is located in exon 6 (coding exon 6) of the FBP2 gene. This alteration results from a G to C substitution at nucleotide position 779, causing the glycine (G) at amino acid position 260 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.35

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.69

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.10

MetaRNN

Pathogenic

0.98

MetaSVM

Uncertain

0.64

MutationAssessor

Pathogenic

4.6

PrimateAI

Uncertain

0.78

PROVEAN

Pathogenic

-5.3

REVEL

Pathogenic

0.88

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.027

Polyphen

0.94

Vest4

0.96

MutPred

0.96

Gain of helix (P = 0.132);

MVP

0.94

MPC

0.15

ClinPred

0.99

GERP RS

4.8

Varity_R

0.94

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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