17-17215228-G-C

Variant names:

• chr17-17215228-G-C
• rs137852929
• NM_144997.7:c.1389C>G

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 16P and 4B. PVS1 PP5_Very_Strong BS2

The NM_144997.7(FLCN):​c.1389C>G​(p.Tyr463*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,860 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 (★★). Synonymous variant affecting the same amino acid position (i.e. Y463Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: FLCN NM_144997.7 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:16 O:1
• Conservation: PhyloP100: -2.67
• Publications: 11 publications found

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]

ENSG00000264187 (HGNC:):

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]

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PP5: Variant 17-17215228-G-C is Pathogenic according to our data. Variant chr17-17215228-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 3367.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High AC in GnomAdExome4 at 9 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLCN	NM_144997.7	MANE Select	c.1389C>G	p.Tyr463*	stop_gained	Exon 12 of 14	NP_659434.2
	FLCN	NM_001353229.2		c.1443C>G	p.Tyr481*	stop_gained	Exon 14 of 16	NP_001340158.1
	FLCN	NM_001353230.2		c.1389C>G	p.Tyr463*	stop_gained	Exon 13 of 15	NP_001340159.1	Q8NFG4-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLCN	ENST00000285071.9	TSL:1 MANE Select	c.1389C>G	p.Tyr463*	stop_gained	Exon 12 of 14	ENSP00000285071.4	Q8NFG4-1
	ENSG00000264187	ENST00000427497.3	TSL:1	n.*223C>G		non_coding_transcript_exon	Exon 8 of 12	ENSP00000394249.3	J3QW42
	ENSG00000264187	ENST00000427497.3	TSL:1	n.*223C>G		3_prime_UTR	Exon 8 of 12	ENSP00000394249.3	J3QW42

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461860 Hom.: 0 Cov.: 35 AF XY: 0.00000688 AC XY: 5 AN XY: 727228

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53390

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
6	-	-	Birt-Hogg-Dube syndrome (7)
4	-	-	not provided (4)
1	-	-	Birt-Hogg-Dube syndrome 1 (1)
1	-	-	Familial spontaneous pneumothorax (1)
1	-	-	FLCN-related disorder (1)
1	-	-	Hereditary cancer-predisposing syndrome (1)
1	-	-	Pneumothorax - familial (1)
1	-	-	Pulmonary arterial hypertension (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.24
CADD	Uncertain	24
DANN	Benign	0.97
Eigen	Benign	-0.57
Eigen_PC	Benign	-0.98
FATHMM_MKL	Benign	0.081	N
PhyloP100		-2.7
Vest4		0.91
GERP RS		-11
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=0/200	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs137852929; hg19: chr17-17118542;