17-81528585-C-T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_Strong BP6 BP7 BS2

The NM_012418.4(FSCN2):c.54C>T(p.Asn18=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000653 in 1,608,810 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 34)
  • Exomes 𝑓: 0.000069 (1 hom.)
• Consequence: FSCN2 NM_012418.4 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:2
• Conservation: PhyloP100: -0.268

Genes affected

FSCN2 (HGNC:3960): (fascin actin-bundling protein 2, retinal) This gene encodes a member of the fascin protein family. Fascins crosslink actin into filamentous bundles within dynamic cell extensions. This family member is proposed to play a role in photoreceptor disk morphogenesis. A mutation in this gene results in one form of autosomal dominant retinitis pigmentosa and macular degeneration. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 17-81528585-C-T is Benign according to our data. Variant chr17-81528585-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 808334.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.
• BP7: Synonymous conserved (PhyloP=-0.268 with no splicing effect.
• BS2: High AC in GnomAdExome at 22 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FSCN2	NM_012418.4	c.54C>T	p.Asn18=	synonymous_variant	1/5	ENST00000417245.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FSCN2	ENST00000417245.7	c.54C>T	p.Asn18=	synonymous_variant	1/5	1	NM_012418.4	P1
FSCN2	ENST00000334850.7	c.54C>T	p.Asn18=	synonymous_variant	1/5	5

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152238 Hom.: 0 Cov.: 34

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000384

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000922 AC: 22 AN: 238546 Hom.: 0 AF XY: 0.000108 AC XY: 14 AN XY: 130174

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000285

Gnomad SAS exome AF: 0.000405

Gnomad FIN exome AF: 0.0000954

Gnomad NFE exome AF: 0.0000282

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000693 AC: 101 AN: 1456572 Hom.: 1 Cov.: 32 AF XY: 0.0000884 AC XY: 64 AN XY: 724152

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000911

Gnomad4 SAS exome AF: 0.000409

Gnomad4 FIN exome AF: 0.0000578

Gnomad4 NFE exome AF: 0.0000171

Gnomad4 OTH exome AF: 0.000116

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152238 Hom.: 0 Cov.: 34 AF XY: 0.0000134 AC XY: 1 AN XY: 74384

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000384

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000227

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:2

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:1 Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Invitae	Nov 27, 2022	- -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2016	- -

Retinal dystrophy Benign:1

Benign, criteria provided, single submitter

research

Dept Of Ophthalmology, Nagoya University

Oct 01, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
Cadd	Benign	0.15
Dann	Benign	0.86

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

LitVar

Other links and lift over

dbSNP: rs782414995; hg19: chr17-79495611; COSMIC: COSV100603281; COSMIC: COSV100603281;