rs748926718
Variant summary
Our verdict is Pathogenic. The variant received 19 ACMG points: 19P and 0B. PM1PM2PM5PP2PP3_StrongPP5_Very_Strong
The NM_000128.4(F11):c.1103G>A(p.Gly368Glu) variant causes a missense change. The variant allele was found at a frequency of 0.00000248 in 1,614,024 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 Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G368A) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000128.4 missense
Scores
Clinical Significance
Conservation
Publications
- congenital factor XI deficiencyInheritance: AD, AR, SD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
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ACMG classification
Our verdict: Pathogenic. The variant received 19 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152108Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000119 AC: 3AN: 251366 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461798Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1AN XY: 727198 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152226Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74424 show subpopulations
ClinVar
Submissions by phenotype
Hereditary factor XI deficiency disease Pathogenic:1
Variant summary: F11 c.1103G>A (p.Gly368Glu) results in a non-conservative amino acid change located in the fourth apple (apple 4) domain (IPR000177), which mediates dimer formation (PMID 1581318) of the encoded protein sequence. Algorithms developed to predict the effect of missense changes on protein structure and function all suggest that this variant is likely to be disruptive. The variant allele was found at a frequency of 1.2e-05 in 251366 control chromosomes (gnomAD). The variant c.1103G>A (aka Gly350Glu) has been observed in multiple compound heterozygous individuals affected with Hereditary factor XI deficiency disease (e.g. Shao_2016, Yuan_2021, Yang_2021, Yang_2022), where the affected probands had a second pathogenic variant, and had significantly reduced (close to zero) FXI activities and protein levels, while carrier family members had approximately half of the normal levels. At least one publication reported experimental evidence evaluating an impact on protein function, and demonstrated that the variant protein was not secreted, and was not able to form dimers, but had no impact (i.e. had no dominant negative effect) on the secretion of the WT (Kravtsov_2004), which is consistent with the observed recessive inheritance. In addition, other missense variants affecting the same amino acid have been classified as likely pathogenic by Labcorp Genetics (formerly Invitae) in ClinVar, indicating the critical role of this codon for protein function. The following publications have been ascertained in the context of this evaluation (PMID: 15026311, 33751533, 35850092, 27067486, 34776502). ClinVar contains an entry for this variant (Variation ID: 2734695). Based on the evidence outlined above, the variant was classified as pathogenic. -
not provided Pathogenic:1
For these reasons, this variant has been classified as Pathogenic. This variant disrupts the p.Gly350 amino acid residue in F11. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 14717969). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. Experimental studies have shown that this missense change affects F11 function (PMID: 15026311). 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 F11 protein function. This variant is also known as p.Gly350Glu. This missense change has been observed in individual(s) with clinical features of autosomal recessive factor XI deficiency (PMID: 33751533). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is present in population databases (no rsID available, gnomAD 0.02%). This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 368 of the F11 protein (p.Gly368Glu). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at