NM_018451.5:c.1586C>G

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_018451.5(CPAP):c.1586C>G(p.Ser529*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000929 in 1,614,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000092 ( 0 hom. )

Consequence

CPAP
NM_018451.5 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7U:1

Conservation

PhyloP100: 0.156

Publications

5 publications found

Variant links:

Genes affected

CPAP (HGNC:17272): (centromere protein J) This gene encodes a protein that belongs to the centromere protein family. During cell division, this protein plays a structural role in the maintenance of centrosome integrity and normal spindle morphology, and it is involved in microtubule disassembly at the centrosome. This protein can function as a transcriptional coactivator in the Stat5 signaling pathway, and also as a coactivator of NF-kappaB-mediated transcription, likely via its interaction with the coactivator p300/CREB-binding protein. Mutations in this gene are associated with primary autosomal recessive microcephaly, a disorder characterized by severely reduced brain size and cognitive disability. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Apr 2012]

CPAP Gene-Disease associations (from GenCC):

microcephaly 6 with or without short stature
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
microcephaly 6, primary, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
autosomal recessive primary microcephaly
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Seckel syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CPAP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 13-24906452-G-C is Pathogenic according to our data. Variant chr13-24906452-G-C is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 158194.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018451.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CPAP	NM_018451.5	MANE Select	c.1586C>G	p.Ser529*	stop_gained	Exon 7 of 17	NP_060921.3
CPAP	NR_047594.2		n.1753C>G		non_coding_transcript_exon	Exon 7 of 18
CPAP	NR_047595.2		n.1753C>G		non_coding_transcript_exon	Exon 7 of 16

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CENPJ	ENST00000381884.9	TSL:1 MANE Select	c.1586C>G	p.Ser529*	stop_gained	Exon 7 of 17	ENSP00000371308.4
CENPJ	ENST00000616936.4	TSL:1	n.1586C>G		non_coding_transcript_exon	Exon 7 of 16	ENSP00000477511.1
CENPJ	ENST00000545981.6	TSL:2	n.1586C>G		non_coding_transcript_exon	Exon 7 of 18	ENSP00000441090.2

Frequencies

GnomAD3 genomes

AF:

0.0000985

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000162

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000956

AC:

AN:

250986

AF XY:

0.0000884

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000203

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000923

AC:

135

AN:

1461850

Hom.:

Cov.:

AF XY:

0.0000880

AC XY:

AN XY:

727222

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.000157

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86238

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000111

AC:

123

AN:

1112002

Other (OTH)

AF:

0.0000497

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000985

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74360

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41470

American (AMR)

AF:

0.000196

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68030

Other (OTH)

AF:

0.000478

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.522

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000209

Hom.:

Bravo

AF:

0.000102

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:7Uncertain:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Microcephaly 6, primary, autosomal recessive

Pathogenic:4

Feb 08, 2013

Genetic Services Laboratory, University of Chicago

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Molecular Genetics Department, Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

A previously undescribed nucleotide variant creates a premature translation stop signal p.Ser529Ter in the CENPJ gene. The variant was observed in presumably compound heterozygous state with another LoF variant (phase not tested) in an individual affected with microcephaly and micrognathia. Homozygous and compound heterozygous variants are reported in patients with Microcephaly 6, primary, autosomal recessive, 608393, and Seckel syndrome 4, 613676. The variant is present in gnomAD population database at low frequency (24/250986 chromosomes, no homozygotes). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as likely pathogenic.

Nov 03, 2022

DASA

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1586C>G;p.(Ser529*) variant creates a premature translational stop signal in the CENPJ gene. It is expected to result in an absent or disrupted protein product - PVS1. ClinVar contains an entry for this variant (Clinvar ID: 158194) - PS4_supporting. The variant is present at low allele frequencies population databases (rs202058504 – gnomAD 0.001169%; ABraOM no frequency - https://abraom.ib.usp.br/) - PM2_supporting. In summary, the currently available evidence indicates that the variant is pathogenic.

Service de Génétique Moléculaire, Hôpital Robert Debré

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

not provided

Pathogenic:2Uncertain:1

Apr 01, 2025

Revvity Omics, Revvity

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Oct 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Ser529*) in the CENPJ gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in CENPJ are known to be pathogenic (PMID: 15793586, 16900296, 20522431). This variant is present in population databases (rs202058504, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with CENPJ-related conditions. ClinVar contains an entry for this variant (Variation ID: 158194). For these reasons, this variant has been classified as Pathogenic.

Jun 08, 2022

GeneDx

Significance:Uncertain significance

Review Status:flagged submission

Collection Method:clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 31589614)

Microcephaly 6, primary, autosomal recessive;C3888212:Seckel syndrome 4

Pathogenic:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Uncertain

0.070

CADD

Pathogenic

(source)

DANN

Benign

0.96

Eigen

Benign

0.021

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.28

PhyloP100

0.16

Vest4

0.64

GERP RS

-2.1

Mutation Taster

=10/190

disease causing (ClinVar)

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over