16-50796443-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1_ModeratePM2PP5_Very_Strong

The NM_001378743.1(CYLD):​c.2806C>T​(p.Arg936*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,772 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CYLD
NM_001378743.1 stop_gained

Scores

2
4
1

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: 3.00
Variant links:
Genes affected
CYLD (HGNC:2584): (CYLD lysine 63 deubiquitinase) This gene is encodes a cytoplasmic protein with three cytoskeletal-associated protein-glycine-conserved (CAP-GLY) domains that functions as a deubiquitinating enzyme. Mutations in this gene have been associated with cylindromatosis, multiple familial trichoepithelioma, and Brooke-Spiegler syndrome. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 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 0.0226 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 16-50796443-C-T is Pathogenic according to our data. Variant chr16-50796443-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 5259.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-50796443-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
CYLDNM_001378743.1 linkuse as main transcriptc.2806C>T p.Arg936* stop_gained 19/19 ENST00000427738.8 NP_001365672.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
CYLDENST00000427738.8 linkuse as main transcriptc.2806C>T p.Arg936* stop_gained 19/195 NM_001378743.1 ENSP00000392025.3 Q9NQC7-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461772
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
727192
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Familial cylindromatosis Pathogenic:2
Pathogenic, criteria provided, single submitterclinical testingGenomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of PhiladelphiaSep 23, 2016- -
Pathogenic, no assertion criteria providedliterature onlyOMIMSep 01, 2006- -
Familial multiple trichoepitheliomata Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMSep 01, 2006- -
Familial cylindromatosis;C1857941:Brooke-Spiegler syndrome;C5436881:Frontotemporal dementia and/or amyotrophic lateral sclerosis 8;CN296585:Trichoepithelioma, multiple familial, 1 Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingFulgent Genetics, Fulgent GeneticsDec 31, 2021- -
Brooke-Spiegler syndrome Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMSep 01, 2006- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.57
D
BayesDel_noAF
Pathogenic
0.59
CADD
Pathogenic
38
DANN
Uncertain
1.0
Eigen
Uncertain
0.57
Eigen_PC
Uncertain
0.38
FATHMM_MKL
Uncertain
0.95
D
Vest4
0.74
GERP RS
3.8

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs121908390; hg19: chr16-50830354; COSMIC: COSV61097015; COSMIC: COSV61097015; API