rs768734584

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PP3_ModerateBP6BS2_Supporting

The NM_144997.7(FLCN):​c.65C>T​(p.Thr22Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000266 in 1,613,540 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

FLCN
NM_144997.7 missense

Scores

12
5
2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 9.26
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 Uncertain_significance. Variant got 0 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.923
BP6
Variant 17-17228073-G-A is Benign according to our data. Variant chr17-17228073-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 409394.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=2}.
BS2
High AC in GnomAd4 at 6 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
FLCNNM_144997.7 linkc.65C>T p.Thr22Met missense_variant Exon 4 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.65C>T p.Thr22Met missense_variant Exon 4 of 14 1 NM_144997.7 ENSP00000285071.4 Q8NFG4-1
ENSG00000264187ENST00000427497.3 linkn.65C>T non_coding_transcript_exon_variant Exon 4 of 12 1 ENSP00000394249.3 J3QW42

Frequencies

GnomAD3 genomes
AF:
0.0000394
AC:
6
AN:
152228
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000882
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000479
AC:
12
AN:
250724
Hom.:
0
AF XY:
0.0000442
AC XY:
6
AN XY:
135752
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000202
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000442
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000253
AC:
37
AN:
1461312
Hom.:
0
Cov.:
31
AF XY:
0.0000220
AC XY:
16
AN XY:
726960
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000134
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000243
Gnomad4 OTH exome
AF:
0.0000497
GnomAD4 genome
AF:
0.0000394
AC:
6
AN:
152228
Hom.:
0
Cov.:
33
AF XY:
0.0000403
AC XY:
3
AN XY:
74372
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000882
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000712
Hom.:
0
Bravo
AF:
0.0000491
ExAC
AF:
0.0000412
AC:
5
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:3
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

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

- -

not provided Uncertain:1
Nov 10, 2023
GeneDx
Significance: Uncertain significance
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; Has not been previously published as pathogenic or benign to our knowledge -

Birt-Hogg-Dube syndrome 1 Benign:1
Oct 22, 2024
Myriad Genetics, Inc.
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is considered likely benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. -

Hereditary cancer-predisposing syndrome Benign:1
Jan 04, 2022
Ambry Genetics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This alteration is classified as 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. -

Birt-Hogg-Dube syndrome Benign:1
Nov 29, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.81
BayesDel_addAF
Pathogenic
0.34
D
BayesDel_noAF
Pathogenic
0.52
CADD
Pathogenic
28
DANN
Benign
0.96
DEOGEN2
Pathogenic
0.86
D;.;.
Eigen
Pathogenic
0.88
Eigen_PC
Pathogenic
0.86
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.94
D;D;D
M_CAP
Pathogenic
0.42
D
MetaRNN
Pathogenic
0.92
D;D;D
MetaSVM
Pathogenic
1.0
D
MutationAssessor
Uncertain
2.3
M;M;.
PrimateAI
Uncertain
0.75
T
PROVEAN
Pathogenic
-4.8
D;D;.
REVEL
Pathogenic
0.94
Sift
Uncertain
0.0020
D;D;.
Sift4G
Uncertain
0.0040
D;D;.
Polyphen
1.0
D;D;.
Vest4
0.97
MutPred
0.75
Loss of sheet (P = 0.0357);Loss of sheet (P = 0.0357);Loss of sheet (P = 0.0357);
MVP
0.93
MPC
1.2
ClinPred
0.86
D
GERP RS
5.5
Varity_R
0.80
gMVP
0.90

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: rs768734584; hg19: chr17-17131387; COSMIC: COSV53263570; COSMIC: COSV53263570; API