Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting
The NM_001353108.3(CEP63):c.668A>G(p.Asn223Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00082 in 1,614,024 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
CEP63 (HGNC:25815): (centrosomal protein 63) This gene encodes a protein with six coiled-coil domains. The protein is localized to the centrosome, a non-membraneous organelle that functions as the major microtubule-organizing center in animal cells. Several alternatively spliced transcript variants have been found, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]
Verdict is Likely_benign. Variant got -1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.14496252).
BS1
Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000854 (1248/1461856) while in subpopulation NFE AF= 0.0011 (1219/1111990). AF 95% confidence interval is 0.00104. There are 1 homozygotes in gnomad4_exome. There are 578 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
- -
Jan 06, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 223 of the CEP63 protein (p.Asn223Ser). This variant is present in population databases (rs140583017, gnomAD 0.08%). This variant has not been reported in the literature in individuals affected with CEP63-related conditions. ClinVar contains an entry for this variant (Variation ID: 377098). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt CEP63 protein function with a negative predictive value of 80%. 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. -
not specified Uncertain:1
Mar 15, 2017
Genetic Services Laboratory, University of Chicago
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
- -
Seckel syndrome 6 Uncertain:1
Jul 29, 2019
Knight Diagnostic Laboratories, Oregon Health and Sciences University
Significance: Uncertain significance
Review Status: criteria provided, single submitter