rs797044430
Positions:
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_StrongPM2
The NM_001102416.3(KNG1):c.1216dup(p.His406ProfsTer10) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Affects (no stars).
Frequency
Genomes: not found (cov: 33)
Consequence
KNG1
NM_001102416.3 frameshift
NM_001102416.3 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 1.36
Genes affected
KNG1 (HGNC:6383): (kininogen 1) This gene uses alternative splicing to generate two different proteins- high molecular weight kininogen (HMWK) and low molecular weight kininogen (LMWK). HMWK is essential for blood coagulation and assembly of the kallikrein-kinin system. Also, bradykinin, a peptide causing numerous physiological effects, is released from HMWK. Bradykinin also functions as an antimicrobial peptide with antibacterial and antifungal activity. In contrast to HMWK, LMWK is not involved in blood coagulation. Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reduces or depletes angiotensin converting enzyme 2 (ACE2), which results in an increase in levels of des-Arg(9)-bradykinin, a bioactive metabolite of bradykinin that is associated with lung injury and inflammation. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2020]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.374 CDS is truncated, and there are 3 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
KNG1 | NM_001102416.3 | c.1216dup | p.His406ProfsTer10 | frameshift_variant | 10/10 | ENST00000644859.2 | |
KNG1 | NM_000893.4 | c.1203+13dup | intron_variant | ||||
KNG1 | NM_001166451.2 | c.1095+13dup | intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
KNG1 | ENST00000644859.2 | c.1216dup | p.His406ProfsTer10 | frameshift_variant | 10/10 | NM_001102416.3 | |||
HRG-AS1 | ENST00000630178.2 | n.135+2094_135+2095insG | intron_variant, non_coding_transcript_variant | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Affects
Submissions summary: Other:1
Revision: no assertion criteria provided
LINK: link
Submissions by phenotype
High molecular weight kininogen deficiency Other:1
Affects, no assertion criteria provided | literature only | OMIM | Jun 01, 2007 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at