rs879255678

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_144997.7(FLCN):c.1429C>T(p.Arg477*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,988 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 (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

FLCN
NM_144997.7 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:12

Conservation

PhyloP100: 2.18

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:

MPRIP (HGNC:30321): (myosin phosphatase Rho interacting protein) Enables cadherin binding activity. Predicted to be involved in actin filament organization. Located in actin cytoskeleton and cytosol. [provided by Alliance of Genome Resources, Apr 2022]

MPRIP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 17-17215188-G-A is Pathogenic according to our data. Variant chr17-17215188-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 253251.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-17215188-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLCN	NM_144997.7 link	c.1429C>T	p.Arg477*	stop_gained	Exon 12 of 14	ENST00000285071.9	NP_659434.2	Q8NFG4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FLCN	ENST00000285071.9 link	c.1429C>T	p.Arg477*	stop_gained	Exon 12 of 14	1	NM_144997.7	ENSP00000285071.4	Q8NFG4-1
ENSG00000264187	ENST00000427497.3 link	n.*263C>T		non_coding_transcript_exon_variant	Exon 8 of 12	1		ENSP00000394249.3	J3QW42
ENSG00000264187	ENST00000427497.3 link	n.*263C>T		3_prime_UTR_variant	Exon 8 of 12	1		ENSP00000394249.3	J3QW42
MPRIP	ENST00000578209.5 link	c.*18-2302G>A		intron_variant	Intron 5 of 5	3		ENSP00000464276.1	J3QRL2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152180

Hom.:

Cov.:

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461808

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727198

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:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74352

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:12

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:4

Sep 05, 2024

Mayo Clinic Laboratories, Mayo Clinic

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PM2, PS4_moderate, PVS1 -

May 23, 2017

Clinical Genetics and Genomics, Karolinska University Hospital

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 18, 2023

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The FLCN c.1429C>T (p.Arg477*) variant causes the premature termination of FLCN protein synthesis. This variant has been reported in the published literature in affected individuals and families with Burt-Hogg-Dube Syndrome (BHD) (PMIDs: 15805188 (2005), 15852235 (2005), 20618353 (2011), 24393238 (2014), 25594584 (2015), 28558743 (2017), 30360018 (2019), 32782288 (2020), 34148334 (2021), 34703430 (2021), and 35639097 (2022)). This variant has not been reported in large, multi-ethnic general populations (Genome Aggregation Database, http://gnomad.broadinstitute.org). Based on the available information, this variant is classified as pathogenic. -

Aug 14, 2015

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The R477X nonsense variant in the FLCN gene has been reported previously in association with Birt-Hogg-Dube Syndrome (BHD) (Furuya et al., 2015; Schmidt et al., 2005). It has also been reported in a family with pneumothorax and blebs (Graham et al., 2005). This variant is predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. -

Birt-Hogg-Dube syndrome

Pathogenic:4

Apr 18, 2023

Myriad Genetics, Inc.

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered pathogenic. This variant creates a termination codon and is predicted to result in premature protein truncation. -

Jul 18, 2016

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 01, 2023

Division of Respiratory Medicine of Juntendo University, Juntendo University Faculty of Medicine and Graduate School of Medicine

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jan 01, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Arg477*) in the FLCN gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in FLCN are known to be pathogenic (PMID: 15852235). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with Birt-Hogg-Dub√© syndrome (PMID: 15852235, 19457309, 20618353, 24393238, 28558743). This variant is also known as c.1884C>T. ClinVar contains an entry for this variant (Variation ID: 253251). For these reasons, this variant has been classified as Pathogenic. -

not specified

Pathogenic:1

Dec 02, 2016

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Birt-Hogg-Dube syndrome;C0699790:Carcinoma of colon;C1868193:Familial spontaneous pneumothorax;C2931246:Potocki-Lupski syndrome;CN074294:Nonpapillary renal cell carcinoma

Pathogenic:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Colorectal cancer;C1868193:Familial spontaneous pneumothorax;CN074294:Nonpapillary renal cell carcinoma;CN375946:Birt-Hogg-Dube syndrome 1

Pathogenic:1

May 15, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Pathogenic:1

May 07, 2024

Ambry Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R477* pathogenic mutation (also known as c.1429C>T), located in coding exon 9 of the FLCN gene, results from a C to T substitution at nucleotide position 1429. This changes the amino acid from an arginine to a stop codon within coding exon 9. This mutation has been reported in the literature in multiple individuals with clinical diagnoses of Birt-Hogg-Dubé (BHD) syndrome and primary spontaneous pneumothorax. Clinical findings reported in association with this mutation include BHD-associated cutaneous features, lung cysts, pneumothoraces, and renal cell carcinoma (Schmidt LS et al. Am. J. Hum. Genet. 2005 Jun; 76(6):1023-33; Graham RB et al. Am. J. Respir. Crit. Care Med. 2005 Jul; 172(1):39-44; Fuertes I et al. Actas Dermosifiliogr. 2009 Apr; 100(3):227-30; Maffé A et al. Clin. Genet. 2011 Apr; 79(4):345-54; Furuya M et al. Cancer Sci. 2015 Mar; 106(3):315-23; Liu Y et al. Orphanet J Rare Dis. 2017 May 30;12(1):104). Of note, this alteration is also designated as c.1884C>T, p.477R>X, and R477X in published literature. This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.57

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.93

Vest4

0.92

GERP RS

3.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over