7-23254254-TAGATGCCAAAAGGA-T
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_002510.3(GPNMB):c.319_332del(p.Lys107TrpfsTer6) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000725 in 1,613,644 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: 𝑓 0.00040 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00076 ( 0 hom. )
Consequence
GPNMB
NM_002510.3 frameshift
NM_002510.3 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 8.61
Genes affected
GPNMB (HGNC:4462): (glycoprotein nmb) The protein encoded by this gene is a type I transmembrane glycoprotein which shows homology to the pMEL17 precursor, a melanocyte-specific protein. GPNMB shows expression in the lowly metastatic human melanoma cell lines and xenografts but does not show expression in the highly metastatic cell lines. GPNMB may be involved in growth delay and reduction of metastatic potential. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
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Very rare variant in population databases, with high coverage;
PP5
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Variant 7-23254254-TAGATGCCAAAAGGA-T is Pathogenic according to our data. Variant chr7-23254254-TAGATGCCAAAAGGA-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1324506.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GPNMB | NM_002510.3 | c.319_332del | p.Lys107TrpfsTer6 | frameshift_variant | 3/11 | ENST00000258733.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GPNMB | ENST00000258733.9 | c.319_332del | p.Lys107TrpfsTer6 | frameshift_variant | 3/11 | 1 | NM_002510.3 |
Frequencies
GnomAD3 genomes ? AF: 0.000401 AC: 61AN: 152194Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.000589 AC: 148AN: 251404Hom.: 1 AF XY: 0.000581 AC XY: 79AN XY: 135862
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GnomAD4 exome AF: 0.000759 AC: 1109AN: 1461332Hom.: 0 AF XY: 0.000765 AC XY: 556AN XY: 727028
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GnomAD4 genome ? AF: 0.000400 AC: 61AN: 152312Hom.: 0 Cov.: 32 AF XY: 0.000269 AC XY: 20AN XY: 74482
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ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Amyloidosis, primary localized cutaneous, 3 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Aug 23, 2019 | - - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Dec 07, 2017 | This sequence change creates a premature translational stop signal (p.Lys107Trpfs*6) in the GPNMB gene. It is expected to result in an absent or disrupted protein product. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with GPNMB-related disease. Loss-of-function variants in GPNMB are known to be pathogenic (PMID: 29336782). For these reasons, this variant has been classified as Pathogenic. - |
Computational scores
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Find out detailed SpliceAI scores and Pangolin per-transcript scores at