Genetic Variant POMZP3:p.Cys165Tyr (chr7-76611535-C-T) – 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_012230.5(POMZP3):c.494G>A(p.Cys165Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000275 in 1,454,578 control chromosomes in the GnomAD database, including 1 homozygotes. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C165S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 28)

Exomes 𝑓: 0.0000027 ( 1 hom. )

Consequence

POMZP3
NM_012230.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.50

Publications

0 publications found

Variant links:

Genes affected

POMZP3 (HGNC:9203): (POM121 and ZP3 fusion) This gene appears to have resulted from a fusion of DNA sequences derived from 2 distinct loci, specifically through the duplication of two internal exons from the POM121 gene and four 3' exons from the ZP3 gene. The 5' end of this gene is similar to the 5` coding region of the POM121 gene which encodes an integral nuclear pore membrane protein. However, the protein encoded by this gene lacks the nuclear pore localization motif. The 3' end of this gene is similar to the last 4 exons of the zona pellucida glycoprotein 3 (ZP3) gene and the encoded protein retains one zona pellucida domain. Multiple protein isoforms are encoded by transcript variants of this gene. [provided by RefSeq, Jul 2008]

POMZP3 links:

LINC03009 (HGNC:56134): (long intergenic non-protein coding RNA 3009)

LINC03009 links:

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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;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POMZP3	NM_012230.5 link	c.494G>A	p.Cys165Tyr	missense_variant	Exon 6 of 7	ENST00000310842.9	NP_036362.3	Q6PJE2-4
POMZP3	NM_152992.4 link	c.346-1320G>A		intron_variant	Intron 4 of 4		NP_694537.1	Q6PJE2-5
LINC03009	NR_029411.1 link	n.625-14386C>T		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POMZP3	ENST00000310842.9 link	c.494G>A	p.Cys165Tyr	missense_variant	Exon 6 of 7	1	NM_012230.5	ENSP00000309233.4		Q6PJE2-4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

249830

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000275

AC:

AN:

1454578

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723748

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000299

AC:

AN:

33444

American (AMR)

AF:

0.00

AC:

AN:

44642

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86152

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53304

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5744

European-Non Finnish (NFE)

AF:

0.00000271

AC:

AN:

1105344

Other (OTH)

AF:

0.00

AC:

AN:

60152

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.64

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.39

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.26

Eigen

Benign

0.16

Eigen_PC

Benign

-0.10

FATHMM_MKL

Benign

0.067

LIST_S2

Benign

0.76

M_CAP

Benign

0.0020

MetaRNN

Uncertain

0.71

MetaSVM

Benign

-0.77

MutationAssessor

Pathogenic

3.0

PhyloP100

2.5

PROVEAN

Pathogenic

-7.9

REVEL

Benign

0.18

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.011

Polyphen

1.0

Vest4

0.54

MutPred

0.62

Loss of disorder (P = 0.0238);

MVP

0.13

MPC

0.060

ClinPred

0.99

GERP RS

0.79

Varity_R

0.77

gMVP

0.84

Mutation Taster

=93/7

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.19

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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7-76611535-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over