7-127595566-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_020369.3(FSCN3):c.404T>A(p.Met135Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: FSCN3 NM_020369.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.20

Genes affected

FSCN3 (HGNC:3961): (fascin actin-bundling protein 3) Predicted to enable actin filament binding activity. Predicted to be involved in actin filament bundle assembly; cell migration; and establishment or maintenance of cell polarity. Predicted to be located in cytoskeleton. Predicted to be active in several cellular components, including lamellipodium; microvillus; and ruffle. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FSCN3	NM_020369.3	c.404T>A	p.Met135Lys	missense_variant	2/7	ENST00000265825.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FSCN3	ENST00000265825.6	c.404T>A	p.Met135Lys	missense_variant	2/7	1	NM_020369.3	P1
FSCN3	ENST00000478821.1	c.2T>A	p.Met1?	start_lost	2/3	5
FSCN3	ENST00000469242.1	n.126T>A		non_coding_transcript_exon_variant	1/2	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 29, 2021

The c.404T>A (p.M135K) alteration is located in exon 2 (coding exon 2) of the FSCN3 gene. This alteration results from a T to A substitution at nucleotide position 404, causing the methionine (M) at amino acid position 135 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
Cadd	Uncertain	23
Dann	Uncertain	0.99
DEOGEN2	Benign	0.012	T;.
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.48
FATHMM_MKL	Benign	0.56	D
LIST_S2	Benign	0.64	T;D
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.43	T;D
MetaSVM	Benign	-0.81	T
MutationAssessor	Benign	1.7	L;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-1.6	N;.
REVEL	Benign	0.25
Sift	Benign	0.96	T;.
Sift4G	Pathogenic	0.0	D;D
Polyphen		0.98	D;.
Vest4		0.60
MutPred		0.63		Gain of methylation at M135 (P = 0.0086);.;
MVP		0.57
MPC		0.15
ClinPred		0.75	D
GERP RS		5.6
Varity_R		0.63
gMVP		0.55

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.

Other links and lift over

hg19: chr7-127235620;