4-186267138-T-A

Variant names:

• chr4-186267138-T-A
• rs1554081281
• NM_000128.4:c.2T>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP5

The NM_000128.4(F11):​c.2T>A​(p.Met1?) variant causes a start lost, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: F11 NM_000128.4 start_lost, splice_region
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 3.15
• Publications: 1 publications found

Genes affected

F11 (HGNC:3529): (coagulation factor XI) This gene encodes coagulation factor XI of the blood coagulation cascade. This protein is present in plasma as a zymogen, which is a unique plasma coagulation enzyme because it exists as a homodimer consisting of two identical polypeptide chains linked by disulfide bonds. During activation of the plasma factor XI, an internal peptide bond is cleaved by factor XIIa (or XII) in each of the two chains, resulting in activated factor XIa, a serine protease composed of two heavy and two light chains held together by disulfide bonds. This activated plasma factor XI triggers the middle phase of the intrisic pathway of blood coagulation by activating factor IX. Defects in this factor lead to Rosenthal syndrome, a blood coagulation abnormality. [provided by RefSeq, Jul 2008]

F11 Gene-Disease associations (from GenCC):

• congenital factor XI deficiency

  Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 4-186267138-T-A is Pathogenic according to our data. Variant chr4-186267138-T-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 552872.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
F11	NM_000128.4	c.2T>A	p.Met1?	start_lost, splice_region_variant	Exon 2 of 15	ENST00000403665.7	NP_000119.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
F11	ENST00000403665.7	c.2T>A	p.Met1?	start_lost, splice_region_variant	Exon 2 of 15	1	NM_000128.4	ENSP00000384957.2
F11	ENST00000492972.6	c.2T>A	p.Met1?	start_lost, splice_region_variant	Exon 2 of 5	2		ENSP00000424479.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 26

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Hereditary factor XI deficiency disease Pathogenic:1

Jul 13, 2017

Counsyl

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.26
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.36	T;T;.
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.43
FATHMM_MKL	Benign	0.71	D
LIST_S2	Uncertain	0.90	D;D;D
M_CAP	Pathogenic	0.95	D
MetaRNN	Pathogenic	0.98	D;D;D
MetaSVM	Uncertain	0.70	D
PhyloP100		3.2
PROVEAN	Benign	-2.2	N;D;N
REVEL	Pathogenic	0.80
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0010	D;D;D
Polyphen		0.99	D;.;.
Vest4		0.81
MutPred		0.79		Gain of solvent accessibility (P = 4e-04);Gain of solvent accessibility (P = 4e-04);Gain of solvent accessibility (P = 4e-04);
MVP		1.0
ClinPred		0.99	D
GERP RS		2.7
Varity_R		0.93
gMVP		0.85
Mutation Taster		=9/191	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1554081281; hg19: chr4-187188292;