11-95790709-C-G

Variant names:

• chr11-95790709-C-G
• rs563708574
• NM_014679.5:c.11C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014679.5(CEP57):​c.11C>G​(p.Ala4Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,696 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. A4S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CEP57 NM_014679.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.80
• Publications: 0 publications found

Genes affected

CEP57 (HGNC:30794): (centrosomal protein 57) This gene encodes a cytoplasmic protein called Translokin. This protein localizes to the centrosome and has a function in microtubular stabilization. The N-terminal half of this protein is required for its centrosome localization and for its multimerization, and the C-terminal half is required for nucleating, bundling and anchoring microtubules to the centrosomes. This protein specifically interacts with fibroblast growth factor 2 (FGF2), sorting nexin 6, Ran-binding protein M and the kinesins KIF3A and KIF3B, and thus mediates the nuclear translocation and mitogenic activity of the FGF2. It also interacts with cyclin D1 and controls nucleocytoplasmic distribution of the cyclin D1 in quiescent cells. This protein is crucial for maintaining correct chromosomal number during cell division. Mutations in this gene cause mosaic variegated aneuploidy syndrome, a rare autosomal recessive disorder. Multiple alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2011]

CEP57 Gene-Disease associations (from GenCC):

• mosaic variegated aneuploidy syndrome 2

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• mosaic variegated aneuploidy syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.16164967).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CEP57	NM_014679.5	c.11C>G	p.Ala4Gly	missense_variant	Exon 1 of 11	ENST00000325542.10	NP_055494.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CEP57	ENST00000325542.10	c.11C>G	p.Ala4Gly	missense_variant	Exon 1 of 11	1	NM_014679.5	ENSP00000317902.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461696 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727122

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44706

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86208

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111960

Other (OTH) AF: 0.0000166 AC: 1 AN: 60364

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000312 Hom.: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Mar 27, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.A4G variant (also known as c.11C>G), located in coding exon 1 of the CEP57 gene, results from a C to G substitution at nucleotide position 11. The alanine at codon 4 is replaced by glycine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

Mosaic variegated aneuploidy syndrome 2 Uncertain:1

Jan 01, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with CEP57-related conditions. This variant is present in population databases (rs563708574, ExAC 0.002%). This sequence change replaces alanine with glycine at codon 4 of the CEP57 protein (p.Ala4Gly). The alanine residue is moderately conserved and there is a small physicochemical difference between alanine and glycine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Pathogenic	26
DANN	Benign	0.95
DEOGEN2	Benign	0.024	.;T;.
Eigen	Uncertain	0.20
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Benign	0.44	N
LIST_S2	Benign	0.66	T;T;T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.16	T;T;T
MetaSVM	Benign	-0.89	T
MutationAssessor	Benign	1.8	L;L;L
PhyloP100		1.8
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-0.43	N;N;N
REVEL	Benign	0.041
Sift	Pathogenic	0.0	D;D;D
Sift4G	Benign	0.31	T;T;T
Polyphen		0.71	P;P;P
Vest4		0.18
MutPred		0.25		Gain of loop (P = 0.0166);Gain of loop (P = 0.0166);Gain of loop (P = 0.0166);
MVP		0.38
MPC		0.064
ClinPred		0.89	D
GERP RS		4.2
PromoterAI		-0.21	Neutral
Varity_R		0.25
gMVP		0.57
Mutation Taster		=274/26	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs563708574; hg19: chr11-95523873;