NM_006767.4:c.5_11dupCTGGACC
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_006767.4(LZTR1):c.5_11dupCTGGACC(p.Gly5TrpfsTer31) 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 Pathogenic (★★).
Frequency
Consequence
NM_006767.4 frameshift
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
LZTR1 | NM_006767.4 | c.5_11dupCTGGACC | p.Gly5TrpfsTer31 | frameshift_variant | Exon 1 of 21 | ENST00000646124.2 | NP_006758.2 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome Cov.: 32
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
not provided Pathogenic:1
This sequence change creates a premature translational stop signal (p.Gly5Trpfs*31) in the LZTR1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in LZTR1 are known to be pathogenic (PMID: 24362817, 25335493, 25480913, 25795793, 29469822, 30368668, 30442762, 30442766, 30481304, 30859559). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with LZTR1-related conditions. ClinVar contains an entry for this variant (Variation ID: 2456291). For these reasons, this variant has been classified as Pathogenic. -
Hereditary cancer-predisposing syndrome;CN230736:Cardiovascular phenotype Pathogenic:1
The c.5_11dupCTGGACC pathogenic mutation, located in coding exon 1 of the LZTR1 gene, results from a duplication of CTGGACC at nucleotide position 5, causing a translational frameshift with a predicted alternate stop codon (p.G5Wfs*31). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. Loss-of-function variants in LZTR1 are related to an increased risk for schwannomas and autosomal recessive Noonan syndrome; however, such associations with autosomal dominant Noonan syndrome have not been observed (Piotrowski A et al. Nat Genet. 2014 Feb;46:182-7; Yamamoto GL et al. J Med Genet. 2015 Jun;52:413-21; Johnston JJ et al. Genet Med. 2018 10;20:1175-1185). Based on the supporting evidence, this variant is pathogenic for an increased risk of LZTR1-related schwannomatosis (SWN) and would be expected to cause autosomal recessive Noonan syndrome when present along with a second pathogenic or likely pathogenic variant on the other allele; however, the association of this alteration with autosomal dominant Noonan syndrome is unlikely. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.