rs1057524549
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3
The NM_006231.4(POLE):c.6408C>T(p.Gly2136Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000185 in 1,461,558 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. G2136G) has been classified as Likely benign.
Frequency
Consequence
NM_006231.4 synonymous
Scores
Clinical Significance
Conservation
Publications
- POLE-related polyposis and colorectal cancer syndromeInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- colorectal cancer, susceptibility to, 12Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
- facial dysmorphism-immunodeficiency-livedo-short stature syndromeInheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
- intrauterine growth retardation, metaphyseal dysplasia, adrenal hypoplasia congenita, genital anomalies, and immunodeficiencyInheritance: AR Classification: STRONG Submitted by: G2P
- IMAGe syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Polymerase proofreading-related adenomatous polyposisInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| POLE | NM_006231.4 | c.6408C>T | p.Gly2136Gly | synonymous_variant | Exon 46 of 49 | ENST00000320574.10 | NP_006222.2 | |
| POLE | XM_011534795.4 | c.6408C>T | p.Gly2136Gly | synonymous_variant | Exon 46 of 48 | XP_011533097.1 | ||
| POLE | XM_011534797.4 | c.5487C>T | p.Gly1829Gly | synonymous_variant | Exon 38 of 40 | XP_011533099.1 | ||
| POLE | XM_011534802.4 | c.3396C>T | p.Gly1132Gly | synonymous_variant | Exon 22 of 24 | XP_011533104.1 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD2 exomes AF: 0.00000797 AC: 2AN: 251046 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000185 AC: 27AN: 1461558Hom.: 0 Cov.: 32 AF XY: 0.0000179 AC XY: 13AN XY: 727080 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
not provided Uncertain:2Benign:1
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Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports a deleterious effect on splicing; Has not been previously published as pathogenic or benign to our knowledge -
Colorectal cancer, susceptibility to, 12 Uncertain:1
The POLE c.6408C>T (p.Gly2136=) synonymous change has a maximum subpopulation frequency of 0.0033% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/variant/12-133202826-G-A). Algorithms that predict the impact of sequence changes on splicing indicate that this change may create or activate a cryptic donor splice site, but RNA studies indicate no splicing effect (BS3_supporting; internal data). To our knowledge, this variant has not been reported in individuals with POLE-related disorders. In summary, this variant meets criteria to be classified as of uncertain significance based on the ACMG/AMP criteria: BS3_supporting. -
Hereditary cancer-predisposing syndrome Uncertain:1
The c.6408C>T variant (also known as p.G2136G), located in coding exon 46 of the POLE gene, results from a C to T substitution at nucleotide position 6408. This nucleotide substitution does not change the glycine at codon 2136. This nucleotide position is poorly conserved in available vertebrate species. In silico splice site analysis predicts that this alteration will result in the creation or strengthening of a novel splice donor site. Based on the available evidence, the clinical significance of this variant remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at