9-94603557-C-T
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong
The NM_000507.4(FBP1):c.841G>A(p.Glu281Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000415 in 1,614,142 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 Likely pathogenic (★★).
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000044 ( 0 hom. )
Consequence
FBP1
NM_000507.4 missense
NM_000507.4 missense
Scores
10
2
1
Clinical Significance
Conservation
PhyloP100: 7.73
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]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PM1
?
In a binding_site (size 0) in uniprot entity F16P1_HUMAN
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.961
PP5
?
Variant 9-94603557-C-T is Pathogenic according to our data. Variant chr9-94603557-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 381580.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
FBP1 | NM_000507.4 | c.841G>A | p.Glu281Lys | missense_variant | 7/7 | ENST00000375326.9 | |
FBP1 | NM_001127628.2 | c.841G>A | p.Glu281Lys | missense_variant | 8/8 | ||
FBP1 | XM_006717005.5 | c.595G>A | p.Glu199Lys | missense_variant | 7/7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
FBP1 | ENST00000375326.9 | c.841G>A | p.Glu281Lys | missense_variant | 7/7 | 1 | NM_000507.4 | P1 | |
PCAT7 | ENST00000647389.1 | n.1909C>T | non_coding_transcript_exon_variant | 9/9 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152172Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000756 AC: 19AN: 251476Hom.: 0 AF XY: 0.000118 AC XY: 16AN XY: 135920
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ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:11
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Fructose-biphosphatase deficiency Pathogenic:10
Pathogenic, criteria provided, single submitter | clinical testing | Institute of Medical Genetics and Genomics, Sir Ganga Ram Hospital | Jul 10, 2012 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Centogene AG - the Rare Disease Company | - | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Center for Molecular Medicine, Children’s Hospital of Fudan University | Dec 21, 2022 | - - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Lifecell International Pvt. Ltd | - | A Heterozygous Missense variant c.841G>A in Exon 7 of the FBP1 gene that results in the amino acid substitution p.Glu281Lys was identified. The observed variant has a minor allele frequency of 0.00008% in gnomAD exomes and genomes, respectively. The severity of the impact of this variant on the protein is high, based on the effect of the protein and REVEL score. Rare Exome Variant Ensemble Learner (REVEL) is an ensembl method for predicting the pathogenicity of missense variants based on a combination of scores from 13 individual tools: MutPred, FATHMM v2.3, VEST 3.0, PolyPhen-2, SIFT, PROVEAN, MutationAssessor, MutationTaster, LRT, GERP++, SiPhy, phyloP, and phastCons. The REVEL score for an individual missense variant can range from 0 to 1, with higher scores reflecting greater likelihood that the variant is disease-causing. ClinVar has also classified this variant as Pathogenic/ Likely Pathogenic with 2 stars, criteria provided, multiple submitters, no conflicts (Variant ID: 381580). This variant has previously been reported for fructose-1,6-bisphosphatase deficiency by Santer R,et,al.,2016. Based on the above evidence this variant has been classified as Likely Pathogenic according to the ACMG guidelines. - |
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Mar 06, 2022 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Apr 09, 2021 | - - |
Likely pathogenic, no assertion criteria provided | clinical testing | Biochemical Molecular Genetic Laboratory, King Abdulaziz Medical City | Oct 11, 2020 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Oct 25, 2023 | This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 281 of the FBP1 protein (p.Glu281Lys). This variant is present in population databases (rs566453434, gnomAD 0.06%). This missense change has been observed in individuals with fructose-1,6-bisphosphatase deficiency (PMID: 23881342, 27101822, 29016355, 29774539; Invitae). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 381580). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt FBP1 protein function with a positive predictive value of 80%. For these reasons, this variant has been classified as Pathogenic. - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Kasturba Medical College, Manipal, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India | - | - - |
Pathogenic, criteria provided, single submitter | clinical testing | 3billion | May 22, 2022 | The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.008%). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.82; 3Cnet: 0.97). Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000381580). The variant has been observed in multiple (>3) similarly affected unrelated individuals (PMID:23881342, 27101822, 29016355, 29774539). Therefore, this variant is classified as pathogenic according to the recommendation of ACMG/AMP guideline. - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Jul 04, 2023 | In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 27101822, 29774539, 29016355, 31584309, 23881342, 33083013, 26549536) - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Pathogenic
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
LIST_S2
Pathogenic
D;.;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D
MetaSVM
Pathogenic
D
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
Polyphen
1.0
.;D;D
Vest4
0.90
MutPred
0.90
.;Gain of methylation at E281 (P = 0.0036);Gain of methylation at E281 (P = 0.0036);
MVP
0.95
MPC
1.1
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at