Genetic Variant POU3F4:p.Pro266Pro (chrX-83509122-G-C) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_000307.5(POU3F4):c.798G>C(p.Pro266Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000108 in 1,209,920 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 41 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P266P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., 3 hem., cov: 23)

Exomes 𝑓: 0.00011 ( 0 hom. 38 hem. )

Consequence

POU3F4
NM_000307.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.298

Publications

0 publications found

Variant links:

Genes affected

POU3F4 (HGNC:9217): (POU class 3 homeobox 4) This gene encodes a member of the POU-III class of neural transcription factors. This family member plays a role in inner ear development. The protein is thought to be involved in the mediation of epigenetic signals which induce striatal neuron-precursor differentiation. Mutations in this gene are associated with X chromosome-linked nonsyndromic mixed deafness. [provided by RefSeq, Dec 2012]

POU3F4 Gene-Disease associations (from GenCC):

nonsyndromic genetic hearing loss
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
X-linked mixed hearing loss with perilymphatic gusher
Inheritance: XL Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
mitochondrial non-syndromic sensorineural hearing loss
Inheritance: Mitochondrial Classification: SUPPORTIVE Submitted by: Orphanet
choroideremia-deafness-obesity syndrome
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

POU3F4 links:

ENSG00000279437 (HGNC:):

ENSG00000279437 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.4).

BS2

High Hemizygotes in GnomAd4 at 3 XL,Mitochondrial gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POU3F4	NM_000307.5 link	c.798G>C	p.Pro266Pro	synonymous_variant	Exon 1 of 1	ENST00000644024.2	NP_000298.3	P49335A0A2R8Y739

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
POU3F4	ENST00000644024.2 link	c.798G>C	p.Pro266Pro	synonymous_variant	Exon 1 of 1		NM_000307.5	ENSP00000495996.1	A0A2R8Y739
ENSG00000279437	ENST00000625081.1 link	n.93C>G		non_coding_transcript_exon_variant	Exon 1 of 1	6
ENSG00000307072	ENST00000823276.1 link	n.362C>G		non_coding_transcript_exon_variant	Exon 2 of 2
ENSG00000307072	ENST00000823277.1 link	n.309C>G		non_coding_transcript_exon_variant	Exon 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.000116

AC:

AN:

111959

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:

0.00132

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000940

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000230

AC:

AN:

182586

AF XY:

0.000224

show subpopulations

Gnomad AFR exome

AF:

0.0000763

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00163

Gnomad NFE exome

AF:

0.000160

Gnomad OTH exome

AF:

0.000444

GnomAD4 exome

AF:

0.000107

AC:

118

AN:

1097961

Hom.:

Cov.:

AF XY:

0.000105

AC XY:

AN XY:

363323

show subpopulations

African (AFR)

AF:

0.0000379

AC:

AN:

26400

American (AMR)

AF:

0.00

AC:

AN:

35187

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19371

East Asian (EAS)

AF:

0.00

AC:

AN:

30204

South Asian (SAS)

AF:

0.00

AC:

AN:

54078

European-Finnish (FIN)

AF:

0.00188

AC:

AN:

40514

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4134

European-Non Finnish (NFE)

AF:

0.0000344

AC:

AN:

841991

Other (OTH)

AF:

0.000260

AC:

AN:

46082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000116

AC:

AN:

111959

Hom.:

Cov.:

AF XY:

0.0000879

AC XY:

AN XY:

34141

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30749

American (AMR)

AF:

0.00

AC:

AN:

10700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2655

East Asian (EAS)

AF:

0.00

AC:

AN:

3523

South Asian (SAS)

AF:

0.00

AC:

AN:

2683

European-Finnish (FIN)

AF:

0.00132

AC:

AN:

6038

Middle Eastern (MID)

AF:

0.00

AC:

AN:

239

European-Non Finnish (NFE)

AF:

0.0000940

AC:

AN:

53177

Other (OTH)

AF:

0.00

AC:

AN:

1507

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000108

Hom.:

Bravo

AF:

0.0000151

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.40

CADD

Benign

(source)

DANN

Benign

0.70

PhyloP100

0.30

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over