rs3862149

Variant names:

• chr17-17231591-C-T
• rs3862149
• NM_144997.7:c.-25+203G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_144997.7(FLCN):​c.-25+203G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000557 in 152,474 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00055 (1 hom., cov: 33)
  • Exomes 𝑓: 0.0081 (0 hom.)
• Consequence: FLCN NM_144997.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.639
• Publications: 0 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]

FLCN Gene-Disease associations (from GenCC):

• Birt-Hogg-Dube syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet, ClinGen
• 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: Genomics England PanelApp, Orphanet, Ambry Genetics
• renal carcinoma

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• colorectal cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ENSG00000264187 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000551 (84/152350) while in subpopulation SAS AF = 0.0165 (80/4834). AF 95% confidence interval is 0.0136. There are 1 homozygotes in GnomAd4. There are 71 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High AC in GnomAd4 at 84 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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLCN	NM_144997.7	MANE Select	c.-25+203G>A		intron	N/A	NP_659434.2
	FLCN	NM_001353229.2		c.-25+203G>A		intron	N/A	NP_001340158.1
	FLCN	NM_001353230.2		c.-308+203G>A		intron	N/A	NP_001340159.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLCN	ENST00000285071.9	TSL:1 MANE Select	c.-25+203G>A		intron	N/A	ENSP00000285071.4
	FLCN	ENST00000389169.9	TSL:1	c.-25+203G>A		intron	N/A	ENSP00000373821.5
	ENSG00000264187	ENST00000427497.3	TSL:1	n.-25+203G>A		intron	N/A	ENSP00000394249.3

Frequencies

GnomAD3 genomes AF: 0.000545 AC: 83 AN: 152232 Hom.: 1 Cov.: 33

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: 0.0163

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00806 AC: 1 AN: 124 Hom.: 0 Cov.: 0 AF XY: 0.0109 AC XY: 1 AN XY: 92

African (AFR) AF: 0.00 AC: 0 AN: 6

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 4

East Asian (EAS) AF: 0.00 AC: 0 AN: 2

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 4

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.0102 AC: 1 AN: 98

Other (OTH) AF: 0.00 AC: 0 AN: 8

GnomAD4 genome AF: 0.000551 AC: 84 AN: 152350 Hom.: 1 Cov.: 33 AF XY: 0.000953 AC XY: 71 AN XY: 74500

African (AFR) AF: 0.00 AC: 0 AN: 41588

American (AMR) AF: 0.00 AC: 0 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.0165 AC: 80 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68028

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.000208 Hom.: 0

Bravo AF: 0.000113

Asia WGS AF: 0.00491 AC: 17 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	0.22
DANN	Benign	0.46
PhyloP100		-0.64

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: rs3862149; hg19: chr17-17134905;