4-186288460-C-T
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong
The NM_000128.4(F11):c.1724C>T(p.Ser575Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,912 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 Likely pathogenic (★★).
Frequency
Consequence
NM_000128.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 16 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
F11 | ENST00000403665.7 | c.1724C>T | p.Ser575Leu | missense_variant | Exon 15 of 15 | 1 | NM_000128.4 | ENSP00000384957.2 | ||
F11-AS1 | ENST00000505103.5 | n.973G>A | non_coding_transcript_exon_variant | Exon 3 of 4 | 1 | |||||
F11 | ENST00000264691.4 | c.323C>T | p.Ser108Leu | missense_variant | Exon 3 of 3 | 3 | ENSP00000264691.4 | |||
F11 | ENST00000503841.1 | n.243C>T | non_coding_transcript_exon_variant | Exon 2 of 2 | 2 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152122Hom.: 0 Cov.: 32
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461790Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 727192
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152122Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74310
ClinVar
Submissions by phenotype
Hereditary factor XI deficiency disease Pathogenic:2
Variant summary: F11 c.1724C>T (p.Ser575Leu) results in a non-conservative amino acid change located in the trypsin domain (IPR001254), affecting the serine active site (IPR033116) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 251412 control chromosomes (gnomAD). c.1724C>T has been reported in the literature in individuals affected with Hereditary factor XI deficiency disease (e.g. Gueguen_2012, Preisler_2021), where heterozygous individuals had moderate F11 deficiency, while a reported homozygous individual had severe F11 deficiency. These data indicate that the variant is likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 33477601, 22159456). ClinVar contains an entry for this variant (Variation ID: 68187). Based on the evidence outlined above, the variant was classified as likely pathogenic. -
The c.1724C>T (p.Ser575Leu) missense variant in the F11 gene has been previously reported in three unrelated individuals affected with CRM+ Factor XI deficiency. Consistent with the CRM+ type Factor XI deficiency, these individuals had reduced coagulation activity but normal antigen levels (FXI:Ag = 60-86 UI/dL) indicating there was normal level of protein present in the plasma, but reduced enzyme function (Guéguen et al., 2012). The individual who was homozygous for this variant had lower coagulation activity (FXI C:1 UI/dL) compared with the two individuals who were heterozygous for this variant (FXI C: 28 UI/dL and 38 UI/dL respectively; normal range 70-15 IU/dL). The c.1724C>T (p.Ser575Leu) variant is located in the active site of the FXI protein, which would be predicted to inhibit the serine protease function of the protein. This variant is absent from the population databases (Exome Sequencing Project; 1000 Genomes; ExAC). Multiple in silico algorithms predict a deleterious effect (GERP = 5.05; CADD = 16.48; PolyPhen = 1.0; SIFT = 0). Therefore, this collective evidence supports the classification of the c.1724C>T (p.Ser575Leu) as a Likely pathogenic variant for Factor XI Deficiency. -
not provided Other:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at