chr17-17223948-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_144997.7(FLCN):c.592G>A(p.Asp198Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000306 in 1,613,400 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D198Y) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00018 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00032 ( 0 hom. )

Consequence

FLCN
NM_144997.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:9O:1

Conservation

PhyloP100: 4.75

Publications

2 publications found

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]

FLCN Gene-Disease associations (from GenCC):

Birt-Hogg-Dube syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)
Birt-Hogg-Dube syndrome 1
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P, Ambry Genetics
familial spontaneous pneumothorax
Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Genomics England PanelApp
renal carcinoma
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
colorectal cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

FLCN links:

ENSG00000264187 (HGNC:):

ENSG00000264187 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.12816778).

BP6

Variant 17-17223948-C-T is Benign according to our data. Variant chr17-17223948-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 134426.

BS2

High AC in GnomAd4 at 28 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144997.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FLCN	NM_144997.7	MANE Select	c.592G>A	p.Asp198Asn	missense	Exon 6 of 14	NP_659434.2
FLCN	NM_001353229.2		c.646G>A	p.Asp216Asn	missense	Exon 8 of 16	NP_001340158.1
FLCN	NM_001353230.2		c.592G>A	p.Asp198Asn	missense	Exon 7 of 15	NP_001340159.1	Q8NFG4-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FLCN	ENST00000285071.9	TSL:1 MANE Select	c.592G>A	p.Asp198Asn	missense	Exon 6 of 14	ENSP00000285071.4	Q8NFG4-1
FLCN	ENST00000389169.9	TSL:1	c.592G>A	p.Asp198Asn	missense	Exon 6 of 8	ENSP00000373821.5	Q8NFG4-2
ENSG00000264187	ENST00000427497.3	TSL:1	n.148+4042G>A		intron	N/A	ENSP00000394249.3	J3QW42

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000132

AC:

AN:

250092

AF XY:

0.000118

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000257

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000319

AC:

466

AN:

1461056

Hom.:

Cov.:

AF XY:

0.000290

AC XY:

211

AN XY:

726838

show subpopulations

African (AFR)

AF:

0.000179

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.000101

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000399

AC:

444

AN:

1112004

Other (OTH)

AF:

0.000166

AC:

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

118

148

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

120

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000184

AC:

AN:

152344

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74496

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41580

American (AMR)

AF:

0.000131

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000294

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000213

Hom.:

Bravo

AF:

0.000208

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.000123

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Birt-Hogg-Dube syndrome (2)

Hereditary cancer-predisposing syndrome (2)

Birt-Hogg-Dube syndrome 1 (1)

Familial spontaneous pneumothorax (1)

FLCN-related disorder (1)

not specified (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.098

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

Eigen

Benign

-0.16

Eigen_PC

Benign

0.028

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.84

M_CAP

Benign

0.041

MetaRNN

Benign

0.13

MetaSVM

Benign

-0.45

MutationAssessor

Benign

0.55

PhyloP100

4.8

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.44

REVEL

Benign

0.22

Sift

Benign

0.24

Sift4G

Benign

0.26

Polyphen

0.0010

Vest4

0.33

MVP

0.37

MPC

0.36

ClinPred

0.070

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.20

gMVP

0.40

Mutation Taster

=71/29

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over