17-35107366-C-G
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5
The NM_002878.4(RAD51D):āc.345G>Cā(p.Gln115His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000144 in 1,393,522 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_002878.4 missense, splice_region
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
RAD51D | ENST00000345365.11 | c.345G>C | p.Gln115His | missense_variant, splice_region_variant | Exon 4 of 10 | 1 | NM_002878.4 | ENSP00000338790.6 | ||
ENSG00000267618 | ENST00000593039.5 | c.4-885G>C | intron_variant | Intron 1 of 6 | 2 | ENSP00000466834.1 |
Frequencies
GnomAD3 genomes Cov.: 31
GnomAD4 exome AF: 0.00000144 AC: 2AN: 1393522Hom.: 0 Cov.: 31 AF XY: 0.00000144 AC XY: 1AN XY: 696360
GnomAD4 genome Cov.: 31
ClinVar
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 4 Pathogenic:1Uncertain:1Other:1
This variant is considered likely pathogenic. mRNA analysis has demonstrated abnormal mRNA splicing occurs [Myriad internal data]. This variant has been reported in multiple individuals with clinical features of gene-specific disease [PMID: 21822267]. -
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. Nucleotide substitutions within 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, but this prediction has not been confirmed by published transcriptional studies. 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: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). This variant has been observed in several individuals affected with ovarian cancer (PMID: 21822267). ClinVar contains an entry for this variant (Variation ID: 643598). This variant is not present in population databases (ExAC no frequency). This sequence change replaces glutamine with histidine at codon 115 of the RAD51D protein (p.Gln115His). The glutamine residue is highly conserved and there is a small physicochemical difference between glutamine and histidine. This variant also falls at the last nucleotide of exon 4 of the RAD51D coding sequence, which is part of the consensus splice site for this exon. -
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Hereditary cancer-predisposing syndrome Uncertain:1
The p.Q115H variant (also known as c.345G>C), located in coding exon 4 of the RAD51D gene, results from a G to C substitution at nucleotide position 345. The glutamine at codon 115 is replaced by histidine, an amino acid with highly similar properties. However, this change occurs in the last base pair of coding exon 4, which makes it likely to have some effect on normal mRNA splicing. This alteration has been identified in an individual diagnosed with ovarian cancer (Loveday C et al. Nat Genet, 2011 Aug;43:879-882). This nucleotide position is highly conserved in available vertebrate species. This amino acid position is highly conserved in available vertebrate species. In silico splice site analysis predicts that this alteration will weaken the native splice donor site; however, direct evidence is insufficient at this time (Ambry internal data). In addition, as a missense substitution this is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at