5-75674517-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001099271.2(POC5):c.1646C>T(p.Thr549Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000112 in 1,613,842 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T549A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

POC5
NM_001099271.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.836

Variant links:

Genes affected

POC5 (HGNC:26658): (POC5 centriolar protein) Predicted to enable identical protein binding activity. Located in centrosome; cytosol; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

POC5 links:

ANKDD1B (HGNC:32525): (ankyrin repeat and death domain containing 1B) Predicted to be involved in signal transduction. [provided by Alliance of Genome Resources, Apr 2022]

ANKDD1B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.031149179).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POC5	NM_001099271.2 linkuse as main transcript	c.1646C>T	p.Thr549Ile	missense_variant	12/12	ENST00000428202.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POC5	ENST00000428202.7 linkuse as main transcript	c.1646C>T	p.Thr549Ile	missense_variant	12/12	1	NM_001099271.2	P1	Q8NA72-1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000100

AC:

AN:

249240

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

135216

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000928

Gnomad NFE exome

AF:

0.000195

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000118

AC:

173

AN:

1461630

Hom.:

Cov.:

AF XY:

0.000103

AC XY:

AN XY:

727102

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000375

Gnomad4 NFE exome

AF:

0.000153

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000101

Hom.:

Bravo

AF:

0.0000416

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000121

AC:

ExAC

AF:

0.000149

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 07, 2022

The c.1646C>T (p.T549I) alteration is located in exon 12 (coding exon 11) of the POC5 gene. This alteration results from a C to T substitution at nucleotide position 1646, causing the threonine (T) at amino acid position 549 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 15, 2023

This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 549 of the POC5 protein (p.Thr549Ile). This variant is present in population databases (rs375555924, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with POC5-related conditions. ClinVar contains an entry for this variant (Variation ID: 2045839). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The isoleucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.69

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.0023

T;T;.;.

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.078

LIST_S2

Benign

0.57

T;T;T;T

M_CAP

Benign

0.0079

MetaRNN

Benign

0.031

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

L;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-1.4

N;N;N;N

REVEL

Benign

0.068

Sift

Benign

0.40

T;T;T;T

Sift4G

Benign

0.12

T;T;T;T

Polyphen

0.0040

B;.;B;B

Vest4

0.033

MVP

0.24

MPC

0.14

ClinPred

0.050

GERP RS

0.86

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Varity_R

0.025

gMVP

0.44

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over