Genetic Variant FZD2:p.Leu16_Leu17dup (chr17-44557726-C-CGCTGCT) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001466.4(FZD2):c.47_52dupTGCTGC(p.Leu16_Leu17dup) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000125 in 1,599,678 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P18P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

FZD2
NM_001466.4 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0100

Publications

0 publications found

Variant links:

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]

FZD2 Gene-Disease associations (from GenCC):

autosomal dominant omodysplasia
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
autosomal dominant Robinow syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

FZD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001466.4. 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
	FZD2	NM_001466.4	MANE Select	c.47_52dupTGCTGC	p.Leu16_Leu17dup	disruptive_inframe_insertion	Exon 1 of 1	NP_001457.1	Q14332

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FZD2	ENST00000315323.5	TSL:6 MANE Select	c.47_52dupTGCTGC	p.Leu16_Leu17dup	disruptive_inframe_insertion	Exon 1 of 1	ENSP00000323901.3	Q14332

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151916

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.91e-7

AC:

AN:

1447762

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

720012

show subpopulations

African (AFR)

AF:

0.0000307

AC:

AN:

32580

American (AMR)

AF:

0.00

AC:

AN:

43696

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25574

East Asian (EAS)

AF:

0.00

AC:

AN:

38550

South Asian (SAS)

AF:

0.00

AC:

AN:

85274

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4150

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1106568

Other (OTH)

AF:

0.00

AC:

AN:

59738

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151916

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74196

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41402

American (AMR)

AF:

0.00

AC:

AN:

15258

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10522

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67944

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.010

Mutation Taster

=71/29

polymorphism

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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17-44557726-CGCT-CGCTGCTGCT

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over