NM_001375405.1:c.2946C>G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001375405.1(CEP120):c.2946C>G(p.Ser982Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,610,106 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CEP120
NM_001375405.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.09

Publications

0 publications found

Variant links:

Genes affected

CEP120 (HGNC:26690): (centrosomal protein 120) This gene encodes a protein that functions in the microtubule-dependent coupling of the nucleus and the centrosome. A similar protein in mouse plays a role in both interkinetic nuclear migration, which is a characteristic pattern of nuclear movement in neural progenitors, and in neural progenitor self-renewal. Mutations in this gene are predicted to result in neurogenic defects. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009]

CEP120 Gene-Disease associations (from GenCC):

ciliopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
Joubert syndrome 31
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
short-rib thoracic dysplasia 13 with or without polydactyly
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Jeune syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Joubert syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Joubert syndrome with ocular defect
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CEP120 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.02792266).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CEP120	NM_001375405.1 link	c.2946C>G	p.Ser982Arg	missense_variant	Exon 20 of 20	ENST00000306467.10	NP_001362334.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CEP120	ENST00000306467.10 link	c.2946C>G	p.Ser982Arg	missense_variant	Exon 20 of 20	5	NM_001375405.1	ENSP00000303058.6		Q8N960-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152134

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1457972

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725262

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33306

American (AMR)

AF:

0.00

AC:

AN:

43748

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26042

East Asian (EAS)

AF:

0.00

AC:

AN:

39542

South Asian (SAS)

AF:

0.00

AC:

AN:

85420

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53310

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110636

Other (OTH)

AF:

0.0000332

AC:

AN:

60216

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74336

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Apr 13, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2946C>G (p.S982R) alteration is located in exon 21 (coding exon 20) of the CEP120 gene. This alteration results from a C to G substitution at nucleotide position 2946, causing the serine (S) at amino acid position 982 to be replaced by an arginine (R). 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

0.13

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.73

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.00048

T;T;.

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.26

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.58

.;T;T

M_CAP

Benign

0.0014

MetaRNN

Benign

0.028

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.5

N;N;.

PhyloP100

1.1

PrimateAI

Benign

0.29

PROVEAN

Benign

1.0

N;N;N

REVEL

Benign

0.065

Sift

Benign

0.43

T;T;T

Sift4G

Benign

0.81

T;T;T

Polyphen

0.0

B;B;.

Vest4

0.089

MutPred

0.17

Gain of MoRF binding (P = 0.0087);Gain of MoRF binding (P = 0.0087);.;

MVP

0.16

MPC

0.081

ClinPred

0.11

GERP RS

4.4

Varity_R

0.037

gMVP

0.081

Mutation Taster

=90/10

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over