7-73434454-C-G

Variant names:

• chr7-73434454-C-G
• rs781871788
• NM_003508.3:c.447C>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_003508.3(FZD9):​c.447C>G​(p.His149Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FZD9 NM_003508.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.151
• Publications: 0 publications found

Genes affected

FZD9 (HGNC:4047): (frizzled class receptor 9) Members of the 'frizzled' gene family encode 7-transmembrane domain proteins that are receptors for Wnt signaling proteins. The FZD9 gene is located within the Williams syndrome common deletion region of chromosome 7, and heterozygous deletion of the FZD9 gene may contribute to the Williams syndrome phenotype. FZD9 is expressed predominantly in brain, testis, eye, skeletal muscle, and kidney. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2885175).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003508.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FZD9	NM_003508.3	MANE Select	c.447C>G	p.His149Gln	missense	Exon 1 of 1	NP_003499.1	O00144

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FZD9	ENST00000344575.5	TSL:6 MANE Select	c.447C>G	p.His149Gln	missense	Exon 1 of 1	ENSP00000345785.3	O00144

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.24	T
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.16
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.71	T
M_CAP	Pathogenic	0.35	D
MetaRNN	Benign	0.29	T
MetaSVM	Benign	-0.78	T
MutationAssessor	Benign	-0.090	N
PhyloP100		0.15
PrimateAI	Pathogenic	0.91	D
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.19
Sift	Benign	0.095	T
Sift4G	Benign	0.24	T
Polyphen		0.64	P
Vest4		0.11
MutPred		0.31		Gain of loop (P = 0.1081)
MVP		0.47
ClinPred		0.61	D
GERP RS		3.2
Varity_R		0.12
gMVP		0.21
Mutation Taster		=44/56	disease causing

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: rs781871788; hg19: chr7-72848784;