Genetic Variant NM_023067.4:c.684_698delAGCTGCGGCTGCAGC (chr3-138946024-GGCTGCAGCCGCAGCT-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP3BS2_Supporting

The NM_023067.4(FOXL2):c.684_698delAGCTGCGGCTGCAGC(p.Ala229_Ala233del) variant causes a disruptive inframe deletion change. The variant allele was found at a frequency of 0.00000864 in 1,388,630 control chromosomes in the GnomAD database, with no homozygous occurrence. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

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

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

FOXL2
NM_023067.4 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.30

Publications

0 publications found

Variant links:

Genes affected

FOXL2 (HGNC:1092): (forkhead box L2) This gene encodes a forkhead transcription factor. The protein contains a fork-head DNA-binding domain and may play a role in ovarian development and function. Expansion of a polyalanine repeat region and other mutations in this gene are a cause of blepharophimosis syndrome and premature ovarian failure 3. [provided by RefSeq, Jul 2016]

FOXL2 Gene-Disease associations (from GenCC):

blepharophimosis, ptosis, and epicanthus inversus syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
premature ovarian failure 3
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

FOXL2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP3

Nonframeshift variant in repetitive region in NM_023067.4

BS2

High AC in GnomAdExome4 at 11 AD,Unknown gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023067.4. 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
	FOXL2	NM_023067.4	MANE Select	c.684_698delAGCTGCGGCTGCAGC	p.Ala229_Ala233del	disruptive_inframe_deletion	Exon 1 of 1	NP_075555.1	Q53ZD3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FOXL2	ENST00000648323.1	MANE Select	c.684_698delAGCTGCGGCTGCAGC	p.Ala229_Ala233del	disruptive_inframe_deletion	Exon 1 of 1	ENSP00000497217.1	P58012

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151510

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:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1237120

Hom.:

AF XY:

0.00000825

AC XY:

AN XY:

606122

show subpopulations

African (AFR)

AF:

0.0000420

AC:

AN:

23788

American (AMR)

AF:

0.00

AC:

AN:

10292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

18246

East Asian (EAS)

AF:

0.00

AC:

AN:

27966

South Asian (SAS)

AF:

0.00

AC:

AN:

56496

European-Finnish (FIN)

AF:

0.00

AC:

AN:

29912

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3524

European-Non Finnish (NFE)

AF:

0.00000984

AC:

AN:

1016058

Other (OTH)

AF:

0.00

AC:

AN:

50838

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.516

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:

0.00000660

AC:

AN:

151510

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73996

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41352

American (AMR)

AF:

0.00

AC:

AN:

15242

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5144

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10422

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000148

AC:

AN:

67774

Other (OTH)

AF:

0.00

AC:

AN:

2068

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

Genome 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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000302

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

6.3

Mutation Taster

=173/27

polymorphism

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over