13-113118590-TC-CT

Variant names:

• chr13-113118590-TC-CT
• NM_019616.4:c.917_918delTCinsCT
• F7 p.Phe306Ser

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PS1 PP2

The NM_019616.4(F7):​c.917_918delTCinsCT​(p.Phe306Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Pathogenic in ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: F7 NM_019616.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.01
• Publications: 0 publications found

Genes affected

F7 (HGNC:3544): (coagulation factor VII) This gene encodes coagulation factor VII which is a vitamin K-dependent factor essential for hemostasis. This factor circulates in the blood in a zymogen form, and is converted to an active form by either factor IXa, factor Xa, factor XIIa, or thrombin by minor proteolysis. Upon activation of the factor VII, a heavy chain containing a catalytic domain and a light chain containing 2 EGF-like domains are generated, and two chains are held together by a disulfide bond. In the presence of factor III and calcium ions, the activated factor then further activates the coagulation cascade by converting factor IX to factor IXa and/or factor X to factor Xa. Defects in this gene can cause coagulopathy. Alternative splicing results in multiple transcript variants encoding different isoforms that may undergo similar proteolytic processing to generate mature polypeptides. [provided by RefSeq, Aug 2015]

F7 Gene-Disease associations (from GenCC):

• congenital factor VII deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
• factor VII deficiency

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PS1: Transcript NM_019616.4 (F7) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar.
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 39 curated pathogenic missense variants (we use a threshold of 10). The gene has 9 curated benign missense variants. Gene score misZ: 0.31991 (below the threshold of 3.09). Trascript score misZ: 0.36088 (below the threshold of 3.09). GenCC associations: The gene is linked to congenital factor VII deficiency, factor VII deficiency.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019616.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	F7	NM_019616.4	MANE Select	c.917_918delTCinsCT	p.Phe306Ser	missense	N/A	NP_062562.1	P08709-2
	F7	NM_000131.5		c.983_984delTCinsCT	p.Phe328Ser	missense	N/A	NP_000122.1
	F7	NM_001267554.2		c.731_732delTCinsCT	p.Phe244Ser	missense	N/A	NP_001254483.1	F5H8B0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	F7	ENST00000346342.8	TSL:1 MANE Select	c.917_918delTCinsCT	p.Phe306Ser	missense	N/A	ENSP00000329546.4	P08709-2
	F7	ENST00000375581.3	TSL:1	c.983_984delTCinsCT	p.Phe328Ser	missense	N/A	ENSP00000364731.3	P08709-1
	F7	ENST00000891255.1		c.1130_1131delTCinsCT	p.Phe377Ser	missense	N/A	ENSP00000561314.1

Frequencies

GnomAD3 genomes Cov.: 33

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

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.0

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr13-113772904;