NM_000507.4:c.720_729delTTATGGGGCC

Variant names:

• chr9-94605552-GGGCCCCATAA-G
• rs1060499726
• NM_000507.4:c.720_729delTTATGGGGCC

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_000507.4(FBP1):​c.720_729delTTATGGGGCC​(p.Tyr241GlyfsTer33) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FBP1 NM_000507.4 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 9.32
• Publications: 2 publications found

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 Gene-Disease associations (from GenCC):

• fructose-1,6-bisphosphatase deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia, Genomics England PanelApp, Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-94605552-GGGCCCCATAA-G is Pathogenic according to our data. Variant chr9-94605552-GGGCCCCATAA-G is described in ClinVar as Pathogenic. ClinVar VariationId is 403701.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FBP1	NM_000507.4	c.720_729delTTATGGGGCC	p.Tyr241GlyfsTer33	frameshift_variant	Exon 6 of 7	ENST00000375326.9	NP_000498.2
FBP1	NM_001127628.2	c.720_729delTTATGGGGCC	p.Tyr241GlyfsTer33	frameshift_variant	Exon 7 of 8		NP_001121100.1
FBP1	XM_006717005.5	c.474_483delTTATGGGGCC	p.Tyr159GlyfsTer33	frameshift_variant	Exon 6 of 7		XP_006717068.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FBP1	ENST00000375326.9	c.720_729delTTATGGGGCC	p.Tyr241GlyfsTer33	frameshift_variant	Exon 6 of 7	1	NM_000507.4	ENSP00000364475.5

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Fructose-biphosphatase deficiency Pathogenic:1

Mar 27, 2017

Department of Medical Genetics, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.3
Mutation Taster		=3/197	disease causing (ClinVar)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1060499726; hg19: chr9-97367834;