rs138070947

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM1BP6BS2

The NM_144997.7(FLCN):​c.580C>T​(p.Arg194Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000193 in 1,613,342 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

FLCN
NM_144997.7 missense

Scores

3
13
3

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:4

Conservation

PhyloP100: 3.52
Variant links:
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM1
In a domain uDENN FLCN/SMCR8-type (size 156) in uniprot entity FLCN_HUMAN there are 14 pathogenic changes around while only 2 benign (88%) in NM_144997.7
BP6
Variant 17-17223960-G-A is Benign according to our data. Variant chr17-17223960-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 141552.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=3}.
BS2
High AC in GnomAd4 at 24 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
FLCNNM_144997.7 linkc.580C>T p.Arg194Trp missense_variant Exon 6 of 14 ENST00000285071.9 NP_659434.2 Q8NFG4-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
FLCNENST00000285071.9 linkc.580C>T p.Arg194Trp missense_variant Exon 6 of 14 1 NM_144997.7 ENSP00000285071.4 Q8NFG4-1
ENSG00000264187ENST00000427497.3 linkn.148+4030C>T intron_variant Intron 4 of 11 1 ENSP00000394249.3 J3QW42

Frequencies

GnomAD3 genomes
AF:
0.000158
AC:
24
AN:
152188
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000145
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000192
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000250
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000192
AC:
48
AN:
250438
Hom.:
0
AF XY:
0.000192
AC XY:
26
AN XY:
135666
show subpopulations
Gnomad AFR exome
AF:
0.0000619
Gnomad AMR exome
AF:
0.0000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000294
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000319
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000197
AC:
288
AN:
1461154
Hom.:
1
Cov.:
32
AF XY:
0.000216
AC XY:
157
AN XY:
726884
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000255
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000228
Gnomad4 OTH exome
AF:
0.000166
GnomAD4 genome
AF:
0.000158
AC:
24
AN:
152188
Hom.:
0
Cov.:
33
AF XY:
0.000202
AC XY:
15
AN XY:
74360
show subpopulations
Gnomad4 AFR
AF:
0.000145
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000192
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000250
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000312
Hom.:
0
Bravo
AF:
0.000196
TwinsUK
AF:
0.000270
AC:
1
ALSPAC
AF:
0.00
AC:
0
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000698
AC:
6
ExAC
AF:
0.000198
AC:
24
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.000109
EpiControl
AF:
0.000415

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:4
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
Apr 01, 2019
Ambry Genetics
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Mar 05, 2022
Sema4, Sema4
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: curation

- -

Birt-Hogg-Dube syndrome Uncertain:1Benign:1
Jul 18, 2016
Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Feb 02, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not specified Uncertain:1
Mar 04, 2025
Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Birt-Hogg-Dube syndrome 1 Benign:1
Oct 23, 2024
Myriad Genetics, Inc.
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is considered benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. Homozygosity has been confirmed in one or more individuals. As homozygosity for pathogenic variants in this gene is generally assumed to result in embryonic lethality, this variant is unlikely to be pathogenic. -

not provided Benign:1
May 10, 2021
GeneDx
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in individuals with a personal history of advanced cancer (Mandelker 2017); This variant is associated with the following publications: (PMID: 29109099, 29181861, 28873162) -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.47
BayesDel_addAF
Benign
-0.024
T
BayesDel_noAF
Uncertain
0.030
CADD
Pathogenic
33
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.94
D;.;D
Eigen
Uncertain
0.68
Eigen_PC
Pathogenic
0.69
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Uncertain
0.96
D;D;D
M_CAP
Uncertain
0.20
D
MetaRNN
Uncertain
0.59
D;D;D
MetaSVM
Uncertain
0.55
D
MutationAssessor
Benign
1.8
L;L;.
PrimateAI
Uncertain
0.67
T
PROVEAN
Uncertain
-3.8
D;D;D
REVEL
Uncertain
0.58
Sift
Uncertain
0.0080
D;D;D
Sift4G
Uncertain
0.018
D;D;D
Polyphen
1.0
D;D;.
Vest4
0.66
MVP
0.69
MPC
1.2
ClinPred
0.25
T
GERP RS
5.7
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.79
gMVP
0.80

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: rs138070947; hg19: chr17-17127274; COSMIC: COSV53256861; COSMIC: COSV53256861; API