Genetic Variant FLCN:p.Leu189Val (chr17-17223975-G-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2

The NM_144997.7(FLCN):c.565C>G(p.Leu189Val) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,262 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FLCN
NM_144997.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.73

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 links:

ENSG00000264187 (HGNC:):

ENSG00000264187 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 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

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLCN	NM_144997.7 link	c.565C>G	p.Leu189Val	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
FLCN	ENST00000285071.9 link	c.565C>G	p.Leu189Val	missense_variant	Exon 6 of 14	1	NM_144997.7	ENSP00000285071.4		Q8NFG4-1
ENSG00000264187	ENST00000427497.3 link	n.148+4015C>G		intron_variant	Intron 4 of 11	1		ENSP00000394249.3		J3QW42

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461262

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726942

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.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Dec 13, 2022

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant has not been reported in the published literature. It also has not been reported in large, multi-ethnic general populations (http://gnomad.broadinstitute.org). Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded conflicting predictions that this variant is benign or damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.45

BayesDel_addAF

Pathogenic

0.36

BayesDel_noAF

Pathogenic

0.28

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.84

D;.;D

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.92

D;D;D

M_CAP

Uncertain

0.11

MetaRNN

Uncertain

0.66

D;D;D

MetaSVM

Uncertain

0.22

MutationAssessor

Benign

1.7

L;L;.

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-2.3

N;D;N

REVEL

Pathogenic

0.66

Sift

Uncertain

0.0090

D;D;D

Sift4G

Uncertain

0.023

D;T;D

Polyphen

1.0

D;D;.

Vest4

0.81

MutPred

0.46

Gain of methylation at K192 (P = 0.0588);Gain of methylation at K192 (P = 0.0588);.;

MVP

0.80

MPC

1.1

ClinPred

0.91

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.81

gMVP

0.75

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over