rs121909550
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PP3_ModeratePP5_Moderate
The NM_000488.4(SERPINC1):c.1277C>T(p.Ser426Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000124 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 Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S426W) has been classified as Uncertain significance.
Frequency
Consequence
NM_000488.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SERPINC1 | NM_000488.4 | c.1277C>T | p.Ser426Leu | missense_variant | 7/7 | ENST00000367698.4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SERPINC1 | ENST00000367698.4 | c.1277C>T | p.Ser426Leu | missense_variant | 7/7 | 1 | NM_000488.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152164Hom.: 0 Cov.: 32
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461860Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 727236
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152164Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74340
ClinVar
Submissions by phenotype
Hereditary antithrombin deficiency Pathogenic:2
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Apr 24, 2021 | In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Experimental studies have shown that this variant affects SERPINC1 protein function (PMID: 3141397). This variant has been observed in individual(s) with clinical features of antithrombin III deficiency (PMID: 3512602, 2602168, 3563966, 18954896, 20088933, 25298121). It has also been observed to segregate with disease in related individuals. This variant is also known as Milano 2, Denver, and S394L in the literature. ClinVar contains an entry for this variant (Variation ID: 18010). This variant is not present in population databases (ExAC no frequency). This sequence change replaces serine with leucine at codon 426 of the SERPINC1 protein (p.Ser426Leu). The serine residue is highly conserved and there is a large physicochemical difference between serine and leucine. - |
Pathogenic, no assertion criteria provided | literature only | OMIM | Apr 06, 1992 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at