19-50401930-T-G
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Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6
The NM_002691.4(POLD1):c.463+6T>G variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,752 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).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Consequence
POLD1
NM_002691.4 splice_donor_region, intron
NM_002691.4 splice_donor_region, intron
Scores
2
Splicing: ADA: 0.02801
2
Clinical Significance
Conservation
PhyloP100: 1.64
Genes affected
POLD1 (HGNC:9175): (DNA polymerase delta 1, catalytic subunit) This gene encodes the 125-kDa catalytic subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3' to 5' exonuclease activity and plays a critical role in DNA replication and repair. Alternatively spliced transcript variants have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 6. [provided by RefSeq, Mar 2012]
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ACMG classification
Classification made for transcript
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 (BayesDel_noAF=-0.44).
BP6
Variant 19-50401930-T-G is Benign according to our data. Variant chr19-50401930-T-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 469355.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
POLD1 | NM_002691.4 | c.463+6T>G | splice_donor_region_variant, intron_variant | ENST00000440232.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
POLD1 | ENST00000440232.7 | c.463+6T>G | splice_donor_region_variant, intron_variant | 1 | NM_002691.4 | P1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
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32
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461752Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0AN XY: 727186
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GnomAD4 genome Cov.: 32
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32
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Oct 27, 2021 | - - |
Colorectal cancer, susceptibility to, 10 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 12, 2024 | This sequence change falls in intron 4 of the POLD1 gene. It does not directly change the encoded amino acid sequence of the POLD1 protein. It affects a nucleotide within the consensus splice site. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with POLD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 469355). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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 provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Mar 23, 2020 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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Calibrated prediction
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dbscSNV1_ADA
Benign
dbscSNV1_RF
Benign
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DL_spliceai
Position offset: -6
Find out detailed SpliceAI scores and Pangolin per-transcript scores at