Genetic Variant NM_024947.4:c.2260A>G (chr3-170113453-T-C) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_024947.4(PHC3):c.2260A>G(p.Ile754Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000031 in 1,613,086 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

PHC3
NM_024947.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.20

Publications

0 publications found

Variant links:

Genes affected

PHC3 (HGNC:15682): (polyhomeotic homolog 3) Predicted to enable chromatin binding activity and histone binding activity. Predicted to be involved in negative regulation of transcription, DNA-templated. Located in nucleoplasm. Part of PRC1 complex. [provided by Alliance of Genome Resources, Apr 2022]

PHC3 links:

LOC105374209 (HGNC:):

LOC105374209 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.04054776).

BS2

High AC in GnomAdExome4 at 46 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PHC3	NM_024947.4 link	c.2260A>G	p.Ile754Val	missense_variant	Exon 11 of 15	ENST00000495893.7	NP_079223.3	Q8NDX5-7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PHC3	ENST00000495893.7 link	c.2260A>G	p.Ile754Val	missense_variant	Exon 11 of 15	1	NM_024947.4	ENSP00000420294.1	Q8NDX5-7
PHC3	ENST00000494943.5 link	c.2224A>G	p.Ile742Val	missense_variant	Exon 11 of 15	1		ENSP00000420271.1	Q8NDX5-1
PHC3	ENST00000467570.5 link	c.2101A>G	p.Ile701Val	missense_variant	Exon 10 of 13	2		ENSP00000419089.1	E7EX82

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000363

AC:

AN:

248250

AF XY:

0.0000520

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000799

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000315

AC:

AN:

1460874

Hom.:

Cov.:

AF XY:

0.0000330

AC XY:

AN XY:

726698

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33458

American (AMR)

AF:

0.00

AC:

AN:

44660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39604

South Asian (SAS)

AF:

0.00

AC:

AN:

86124

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53352

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.0000414

AC:

AN:

1111466

Other (OTH)

AF:

0.00

AC:

AN:

60346

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74360

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41448

American (AMR)

AF:

0.0000655

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000450

Hom.:

Bravo

AF:

0.0000151

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000414

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000595

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 27, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2260A>G (p.I754V) alteration is located in exon 11 (coding exon 11) of the PHC3 gene. This alteration results from a A to G substitution at nucleotide position 2260, causing the isoleucine (I) at amino acid position 754 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Benign

0.45

DEOGEN2

Benign

0.054

.;T;.

Eigen

Benign

-0.83

Eigen_PC

Benign

-0.67

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.71

T;T;T

M_CAP

Benign

0.0043

MetaRNN

Benign

0.041

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.34

.;N;.

PhyloP100

1.2

PrimateAI

Benign

0.38

PROVEAN

Benign

0.10

N;N;N

REVEL

Benign

0.024

Sift

Benign

0.59

T;T;T

Sift4G

Benign

1.0

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.067

MutPred

0.25

.;Gain of sheet (P = 0.0266);.;

MVP

0.11

MPC

0.11

ClinPred

0.014

GERP RS

0.25

Varity_R

0.014

gMVP

0.14

Mutation Taster

=97/3

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

NM_024947.4:c.2260A>G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over