15-48793359-T-G
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM2PP3_ModeratePP5_Very_Strong
The NM_001194998.2(CEP152):c.794A>C(p.Gln265Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000889 in 1,461,714 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 (★★).
Frequency
Consequence
NM_001194998.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 12 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
CEP152 | ENST00000380950.7 | c.794A>C | p.Gln265Pro | missense_variant | Exon 7 of 27 | 1 | NM_001194998.2 | ENSP00000370337.2 | ||
CEP152 | ENST00000399334.7 | c.794A>C | p.Gln265Pro | missense_variant | Exon 7 of 26 | 1 | ENSP00000382271.3 | |||
CEP152 | ENST00000325747.9 | c.515A>C | p.Gln172Pro | missense_variant | Exon 6 of 25 | 1 | ENSP00000321000.5 | |||
CEP152 | ENST00000560322.5 | n.794A>C | non_coding_transcript_exon_variant | Exon 7 of 13 | 1 | ENSP00000453440.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.0000120 AC: 3AN: 249462Hom.: 0 AF XY: 0.00000739 AC XY: 1AN XY: 135360
GnomAD4 exome AF: 0.00000889 AC: 13AN: 1461714Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8AN XY: 727170
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Microcephaly 9, primary, autosomal recessive Pathogenic:2
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not provided Pathogenic:2
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 20598275, 23456457, 21668957, 30086807) -
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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on CEP152 protein function. ClinVar contains an entry for this variant (Variation ID: 55). This missense change has been observed in individual(s) with primary microcephaly (PMID: 20598275). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is present in population databases (rs267606717, gnomAD 0.003%). This sequence change replaces glutamine, which is neutral and polar, with proline, which is neutral and non-polar, at codon 265 of the CEP152 protein (p.Gln265Pro). -
CEP152-related disorder Pathogenic:1
The CEP152 c.794A>C (p.Gln265Pro) missense variant has been reported in one study in which it was found in three individuals with microcephaly, with head circumferences between five and seven standard deviations below the mean, including in two individuals in a homozygous state and in one individual in a compound heterozygous state with a null variant on the second allele (Guernsey et al. 2010). The p.Gln265Pro variant was found in a heterozygous state in each of the unaffected parents of the affected individuals. The p.Gln265Pro variant was absent from 496 control chromosomes including 310 local Maritime control chromosomes and 186 European control chromosomes from the Centre d'Etude du Polymorphisme Humain (CEPH) (Guernsey et al. 2010). The variant is reported at a frequency of 0.000027 in the European (non-Finnish) population of the Genome Aggregation Database. Transfection of the variant protein into human U2OS osteosarcoma-derived cells did not affect localization, with the variant protein being found in the centrosomes similarly to wild type. However, the Gln265 residue is highly conserved among vertebrates and is predicted to fall in a coiled-coiled region predicted to be disrupted by substitution of a proline residue (Guernsey et al. 2010). Based on the evidence, the c.794A>C (p.Gln265Pro) variant is classified as likely pathogenic for CEP152-related disorders. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population. -
Seckel syndrome 5;C3553886:Microcephaly 9, primary, autosomal recessive Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at