2-202035809-G-T

Position:

• chr2-202035809-G-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_003507.2(FZD7):​c.1162G>T​(p.Val388Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,676 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: FZD7 NM_003507.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.18

Genes affected

FZD7 (HGNC:4045): (frizzled class receptor 7) Members of the 'frizzled' gene family encode 7-transmembrane domain proteins that are receptors for Wnt signaling proteins. The FZD7 protein contains an N-terminal signal sequence, 10 cysteine residues typical of the cysteine-rich extracellular domain of Fz family members, 7 putative transmembrane domains, and an intracellular C-terminal tail with a PDZ domain-binding motif. FZD7 gene expression may downregulate APC function and enhance beta-catenin-mediated signals in poorly differentiated human esophageal carcinomas. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BS2: High AC in GnomAdExome4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FZD7	NM_003507.2	c.1162G>T	p.Val388Leu	missense_variant	1/1	ENST00000286201.3	NP_003498.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FZD7	ENST00000286201.3	c.1162G>T	p.Val388Leu	missense_variant	1/1	6	NM_003507.2	ENSP00000286201.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461676 Hom.: 0 Cov.: 33 AF XY: 0.00000550 AC XY: 4 AN XY: 727158

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000809

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

EpiCase AF: 0.0000545

EpiControl AF: 0.00

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

Aug 08, 2023

The c.1162G>T (p.V388L) alteration is located in exon 1 (coding exon 1) of the FZD7 gene. This alteration results from a G to T substitution at nucleotide position 1162, causing the valine (V) at amino acid position 388 to be replaced by a leucine (L). 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	0.30
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.060
CADD	Pathogenic	30
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.46	T
Eigen	Benign	0.18
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.10	D
MetaRNN	Uncertain	0.71	D
MetaSVM	Benign	-0.44	T
MutationAssessor	Benign	1.6	L
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-1.5	N
REVEL	Uncertain	0.49
Sift	Benign	0.15	T
Sift4G	Benign	0.17	T
Polyphen		0.39	B
Vest4		0.68
MutPred		0.42		Loss of methylation at K392 (P = 0.0751);
MVP		0.79
MPC		1.2
ClinPred		0.74	D
GERP RS		5.5
Varity_R		0.60
gMVP		0.62

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: rs1163977982; hg19: chr2-202900532;