Genetic Variant FBP1:c.334-17C>A (chr9-94617877-G-T) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000507.4(FBP1):c.334-17C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000154 in 1,562,974 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 2 hom. )

Consequence

FBP1
NM_000507.4 intron

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.316

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]

FBP1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.79).

BP6

Variant 9-94617877-G-T is Benign according to our data. Variant chr9-94617877-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 256319.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.000156 (220/1410804) while in subpopulation MID AF= 0.00386 (22/5696). AF 95% confidence interval is 0.00261. There are 2 homozygotes in gnomad4_exome. There are 122 alleles in male gnomad4_exome subpopulation. Median coverage is 25. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
FBP1	NM_000507.4 link	c.334-17C>A	intron_variant	Intron 2 of 6	ENST00000375326.9	NP_000498.2	P09467
FBP1	NM_001127628.2 link	c.334-17C>A	intron_variant	Intron 3 of 7		NP_001121100.1	P09467Q2TU34
FBP1	XM_006717005.5 link	c.88-17C>A	intron_variant	Intron 2 of 6		XP_006717068.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FBP1	ENST00000375326.9 link	c.334-17C>A		intron_variant	Intron 2 of 6	1	NM_000507.4	ENSP00000364475.5		P09467

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152052

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000172

AC:

AN:

250370

Hom.:

AF XY:

0.000229

AC XY:

AN XY:

135428

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:

0.000523

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000229

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000156

AC:

220

AN:

1410804

Hom.:

Cov.:

AF XY:

0.000173

AC XY:

122

AN XY:

705224

show subpopulations

Gnomad4 AFR exome

AF:

0.0000924

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000775

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000446

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000131

Gnomad4 OTH exome

AF:

0.000255

GnomAD4 genome

AF:

0.000131

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74392

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000250

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000855

Hom.:

Bravo

AF:

0.000166

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 19, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This 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. -

Fructose-biphosphatase deficiency

Benign:1

Jan 18, 2025

Labcorp Genetics (formerly Invitae), Labcorp

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

-0.79

CADD

Benign

6.4

DANN

Benign

0.61

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

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