rs1439151268
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate
The NM_144997.7(FLCN):c.1599_1600del(p.Lys534AlafsTer67) variant causes a frameshift change. The variant allele was found at a frequency of 0.000000684 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. Q533Q) has been classified as Likely benign.
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Consequence
FLCN
NM_144997.7 frameshift
NM_144997.7 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 4.79
Genes affected
FLCN (HGNC:27310): (folliculin) This gene is located within the Smith-Magenis syndrome region on chromosome 17. Mutations in this gene are associated with Birt-Hogg-Dube syndrome, which is characterized by fibrofolliculomas, renal tumors, lung cysts, and pneumothorax. Alternative splicing of this gene results in two transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]
MPRIP (HGNC:30321): (myosin phosphatase Rho interacting protein) Enables cadherin binding activity. Predicted to be involved in actin filament organization. Located in actin cytoskeleton and cytosol. [provided by Alliance of Genome Resources, Apr 2022]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 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. There are 10 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 17-17213794-TTC-T is Pathogenic according to our data. Variant chr17-17213794-TTC-T is described in ClinVar as [Pathogenic]. Clinvar id is 2578479.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
FLCN | NM_144997.7 | c.1599_1600del | p.Lys534AlafsTer67 | frameshift_variant | 14/14 | ENST00000285071.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
FLCN | ENST00000285071.9 | c.1599_1600del | p.Lys534AlafsTer67 | frameshift_variant | 14/14 | 1 | NM_144997.7 | P1 | |
MPRIP | ENST00000578209.5 | c.*18-3694_*18-3693del | intron_variant | 3 |
Frequencies
GnomAD3 genomes ? Cov.: 32
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GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251494Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135922
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GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461890Hom.: 0 AF XY: 0.00000138 AC XY: 1AN XY: 727246
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GnomAD4 genome ? Cov.: 32
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ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Birt-Hogg-Dube syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Feb 16, 2023 | This variant disrupts a region of the FLCN protein in which other variant(s) (p.Trp553*) have been determined to be pathogenic (PMID: 28558743). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. This sequence change results in a frameshift in the FLCN gene (p.Lys534Alafs*67). While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 46 amino acid(s) of the FLCN protein and extend the protein by 20 additional amino acid residues. This variant is present in population databases (no rsID available, gnomAD no frequency). This frameshift has been observed in individual(s) with clinical features of Birt-Hogg-Dubé syndrome (PMID: 27220747). For these reasons, this variant has been classified as Pathogenic. - |
Pathogenic, no assertion criteria provided | clinical testing | Division of Respiratory Medicine of Juntendo University, Juntendo University Faculty of Medicine and Graduate School of Medicine | Jul 01, 2023 | - - |
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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