chr16-81017333-A-C

Position:

chr16-81017333-A-C

Variant summary

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

The NM_001100624.3(CENPN):c.225A>C(p.Gln75His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000789 in 1,596,092 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 (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000084 ( 0 hom. )

Consequence

CENPN
NM_001100624.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.576

Variant links:

Genes affected

CENPN (HGNC:30873): (centromere protein N) The protein encoded by this gene forms part of the nucleosome-associated complex and is important for kinetochore assembly. It is bound to kinetochores during S phase and G2 and recruits other proteins to the centromere. Pseudogenes of this gene are located on chromosome 2. Alternative splicing results in multiple transcript variants that encode different protein isoforms. [provided by RefSeq, Jul 2012]

CENPN links:

CENPN-AS1 (HGNC:55106): (CENPN antisense RNA 1)

CENPN-AS1 links:

CMC2 (HGNC:24447): (C-X9-C motif containing 2) Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

CMC2 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=0.059260517).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CENPN	NM_001100624.3 linkuse as main transcript	c.225A>C	p.Gln75His	missense_variant	4/11	ENST00000305850.10	NP_001094094.2
CENPN-AS1	XR_007065136.1 linkuse as main transcript	n.410-298T>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CENPN	ENST00000305850.10 linkuse as main transcript	c.225A>C	p.Gln75His	missense_variant	4/11	1	NM_001100624.3	ENSP00000305608	P1	Q96H22-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152148

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000319

AC:

AN:

250622

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135466

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:

0.00

Gnomad NFE exome

AF:

0.0000705

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000845

AC:

122

AN:

1443944

Hom.:

Cov.:

AF XY:

0.0000820

AC XY:

AN XY:

719510

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:

0.00

Gnomad4 NFE exome

AF:

0.000109

Gnomad4 OTH exome

AF:

0.0000502

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152148

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000588

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 06, 2022

The c.225A>C (p.Q75H) alteration is located in exon 4 (coding exon 3) of the CENPN gene. This alteration results from a A to C substitution at nucleotide position 225, causing the glutamine (Q) at amino acid position 75 to be replaced by a histidine (H). 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

Uncertain

0.45

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.53

CADD

Benign

0.94

DANN

Benign

0.87

DEOGEN2

Benign

0.0069

T;.;.;.;T

Eigen

Benign

-0.88

Eigen_PC

Benign

-0.87

FATHMM_MKL

Benign

0.036

LIST_S2

Benign

0.78

T;T;T;T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.059

T;T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.8

L;L;L;L;.

MutationTaster

Benign

1.0

D;N;N;N;N;D

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.2

N;N;N;N;N

REVEL

Benign

0.048

Sift

Benign

0.69

T;T;T;T;T

Sift4G

Benign

0.57

T;T;T;T;T

Polyphen

0.016

B;B;.;.;.

Vest4

0.19

MutPred

0.64

Loss of catalytic residue at Q75 (P = 0.0601);Loss of catalytic residue at Q75 (P = 0.0601);Loss of catalytic residue at Q75 (P = 0.0601);Loss of catalytic residue at Q75 (P = 0.0601);Loss of catalytic residue at Q75 (P = 0.0601);

MVP

0.12

MPC

0.028

ClinPred

0.036

GERP RS

-0.54

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.087

gMVP

0.32

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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