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rs140222720

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_000507.4(FBP1):​c.670G>A​(p.Val224Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000547 in 1,613,964 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. V224V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 34)
Exomes 𝑓: 0.00056 ( 1 hom. )

Consequence

FBP1
NM_000507.4 missense

Scores

13

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.471
Variant links:
Genes affected
FBP1 (HGNC:3606): (fructose-bisphosphatase 1) Fructose-1,6-bisphosphatase 1, a gluconeogenesis regulatory enzyme, catalyzes the hydrolysis of fructose 1,6-bisphosphate to fructose 6-phosphate and inorganic phosphate. Fructose-1,6-diphosphatase deficiency is associated with hypoglycemia and metabolic acidosis. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.016524523).
BP6
Variant 9-94606850-C-T is Benign according to our data. Variant chr9-94606850-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 214359.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=2}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
FBP1NM_000507.4 linkuse as main transcriptc.670G>A p.Val224Ile missense_variant 5/7 ENST00000375326.9
FBP1NM_001127628.2 linkuse as main transcriptc.670G>A p.Val224Ile missense_variant 6/8
FBP1XM_006717005.5 linkuse as main transcriptc.424G>A p.Val142Ile missense_variant 5/7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
FBP1ENST00000375326.9 linkuse as main transcriptc.670G>A p.Val224Ile missense_variant 5/71 NM_000507.4 P1

Frequencies

GnomAD3 genomes
AF:
0.000388
AC:
59
AN:
152212
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.0000965
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.0000942
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000779
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000422
AC:
106
AN:
251252
Hom.:
0
AF XY:
0.000412
AC XY:
56
AN XY:
135792
show subpopulations
Gnomad AFR exome
AF:
0.000123
Gnomad AMR exome
AF:
0.0000867
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.0000924
Gnomad NFE exome
AF:
0.000854
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000564
AC:
824
AN:
1461634
Hom.:
1
Cov.:
42
AF XY:
0.000597
AC XY:
434
AN XY:
727130
show subpopulations
Gnomad4 AFR exome
AF:
0.0000598
Gnomad4 AMR exome
AF:
0.0000447
Gnomad4 ASJ exome
AF:
0.0000383
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000348
Gnomad4 FIN exome
AF:
0.000150
Gnomad4 NFE exome
AF:
0.000698
Gnomad4 OTH exome
AF:
0.000464
GnomAD4 genome
AF:
0.000387
AC:
59
AN:
152330
Hom.:
0
Cov.:
34
AF XY:
0.000363
AC XY:
27
AN XY:
74482
show subpopulations
Gnomad4 AFR
AF:
0.0000962
Gnomad4 AMR
AF:
0.0000653
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.0000942
Gnomad4 NFE
AF:
0.000779
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000622
Hom.:
0
Bravo
AF:
0.000325
TwinsUK
AF:
0.00135
AC:
5
ALSPAC
AF:
0.000519
AC:
2
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.00140
AC:
12
ExAC
AF:
0.000535
AC:
65
EpiCase
AF:
0.000763
EpiControl
AF:
0.000652

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Fructose-biphosphatase deficiency Uncertain:1Benign:1
Uncertain significance, criteria provided, single submitterclinical testingIllumina Laboratory Services, IlluminaJan 12, 2018This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Likely benign, criteria provided, single submitterclinical testingInvitaeJan 24, 2024- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxMay 02, 2014This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.098
BayesDel_addAF
Benign
-0.43
T
BayesDel_noAF
Benign
-0.44
CADD
Benign
4.7
DANN
Benign
0.80
Eigen
Benign
-0.87
Eigen_PC
Benign
-0.85
FATHMM_MKL
Benign
0.20
N
LIST_S2
Benign
0.77
T;.;T;T
M_CAP
Benign
0.0096
T
MetaRNN
Benign
0.017
T;T;T;T
MetaSVM
Benign
-1.0
T
MutationTaster
Benign
0.99
D;D
PrimateAI
Benign
0.25
T
Polyphen
0.0
.;B;B;.
Vest4
0.11, 0.11
MVP
0.41
MPC
0.24
ClinPred
0.0066
T
GERP RS
0.81
Varity_R
0.051
gMVP
0.63

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.030
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.

Other links and lift over

dbSNP: rs140222720; hg19: chr9-97369132; API