17-44557713-C-T

Variant names:

• chr17-44557713-C-T
• rs1457585218
• NM_001466.4:c.25C>T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001466.4(FZD2):​c.25C>T​(p.Arg9Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000281 in 1,425,290 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R9H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: FZD2 NM_001466.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.102

Genes affected

FZD2 (HGNC:4040): (frizzled class receptor 2) This intronless gene is a member of the frizzled gene family. Members of this family encode seven-transmembrane domain proteins that are receptors for the wingless type MMTV integration site family of signaling proteins. This gene encodes a protein that is coupled to the beta-catenin canonical signaling pathway. Competition between the wingless-type MMTV integration site family, member 3A and wingless-type MMTV integration site family, member 5A gene products for binding of this protein is thought to regulate the beta-catenin-dependent and -independent pathways. [provided by RefSeq, Dec 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19083157).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FZD2	NM_001466.4	c.25C>T	p.Arg9Cys	missense_variant	Exon 1 of 1	ENST00000315323.5	NP_001457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FZD2	ENST00000315323.5	c.25C>T	p.Arg9Cys	missense_variant	Exon 1 of 1	6	NM_001466.4	ENSP00000323901.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000518 AC: 1 AN: 192896 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 106204

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000337

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000281 AC: 4 AN: 1425290 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 707002

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000491

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.13e-7

Gnomad4 OTH exome AF: 0.0000170

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Mar 14, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 9 of the FZD2 protein (p.Arg9Cys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with FZD2-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.33	T
Eigen	Benign	-0.52
Eigen_PC	Benign	-0.39
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.65	T
M_CAP	Pathogenic	0.39	D
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-0.82	T
MutationAssessor	Benign	0.0	N
PrimateAI	Pathogenic	0.93	D
PROVEAN	Benign	0.19	N
REVEL	Benign	0.097
Sift	Benign	0.088	T
Sift4G	Uncertain	0.057	T
Polyphen		0.0	B
Vest4		0.12
MutPred		0.40		Loss of methylation at R9 (P = 0.0094);
MVP		0.63
ClinPred		0.23	T
GERP RS		2.4
Varity_R		0.051
gMVP		0.50

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: rs1457585218; hg19: chr17-42635081;