X-83509324-A-G

Variant names:

• chrX-83509324-A-G
• rs104894922
• NM_000307.5:c.1000A>G

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PP3_Strong PP5_Moderate

The NM_000307.5(POU3F4):​c.1000A>G​(p.Lys334Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: POU3F4 NM_000307.5 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 9.11
• Publications: 7 publications found

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

ENSG00000307072 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 1 uncertain in NM_000307.5
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.978
• PP5: Variant X-83509324-A-G is Pathogenic according to our data. Variant chrX-83509324-A-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 11680.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000307.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POU3F4	NM_000307.5	MANE Select	c.1000A>G	p.Lys334Glu	missense	Exon 1 of 1	NP_000298.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POU3F4	ENST00000644024.2	MANE Select	c.1000A>G	p.Lys334Glu	missense	Exon 1 of 1	ENSP00000495996.1
	ENSG00000307072	ENST00000823276.1		n.183-23T>C		intron	N/A
	ENSG00000307072	ENST00000823277.1		n.130-23T>C		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

X-linked mixed hearing loss with perilymphatic gusher Pathogenic:2

May 13, 2022

Institute of Human Genetics, University of Leipzig Medical Center

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was identified as hemizygous. It was maternally inherited and also identified in the similarly affected brother. Criteria applied: PM1, PS4_SUP, PM2_SUP, PP1, PP3

Feb 03, 1995

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.74	D
BayesDel_noAF	Pathogenic	0.82
CADD	Pathogenic	29
DANN	Uncertain	1.0
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.94	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Pathogenic	1.1	D
PhyloP100		9.1
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-3.8	D
REVEL	Pathogenic	0.98
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Vest4		0.87
MutPred		0.86		Loss of methylation at K334 (P = 0.0022)
MVP		1.0
MPC		2.6
ClinPred		1.0	D
GERP RS		5.1
gMVP		0.97
Mutation Taster		=18/82	disease causing (ClinVar)

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: rs104894922; hg19: chrX-82764332;