rs1555197682
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_003482.4(KMT2D):c.1345_1346del(p.Leu449ValfsTer5) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. L449L) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 32)
Consequence
KMT2D
NM_003482.4 frameshift
NM_003482.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 2.84
Genes affected
KMT2D (HGNC:7133): (lysine methyltransferase 2D) The protein encoded by this gene is a histone methyltransferase that methylates the Lys-4 position of histone H3. The encoded protein is part of a large protein complex called ASCOM, which has been shown to be a transcriptional regulator of the beta-globin and estrogen receptor genes. Mutations in this gene have been shown to be a cause of Kabuki syndrome. [provided by RefSeq, Oct 2010]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PP5
?
Variant 12-49052336-CAG-C is Pathogenic according to our data. Variant chr12-49052336-CAG-C is described in ClinVar as [Pathogenic]. Clinvar id is 463006.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr12-49052336-CAG-C is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
KMT2D | NM_003482.4 | c.1345_1346del | p.Leu449ValfsTer5 | frameshift_variant | 11/55 | ENST00000301067.12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
KMT2D | ENST00000301067.12 | c.1345_1346del | p.Leu449ValfsTer5 | frameshift_variant | 11/55 | 5 | NM_003482.4 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Kabuki syndrome Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Feb 20, 2017 | This sequence change deletes 2 nucleotides from exon 10 of the KMT2D mRNA (c.1345_1346delCT), causing a frameshift at codon 449. This creates a premature translational stop signal (p.Leu449Valfs*5) and is expected to result in an absent or disrupted protein product. Loss-of-function variants in KMT2D are known to be pathogenic. This particular variant has been reported in the literature in an individual affected with Kabuki syndrome (PMID: 21658225). This gene is also known as MLL2 in the literature. For these reasons, this variant has been classified as Pathogenic. - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Jun 07, 2023 | Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 30107592, 21658225) - |
Computational scores
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Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at