17-35101021-C-T
Variant summary
Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2
The NM_002878.4(RAD51D):c.919G>A(p.Glu307Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000156 in 1,613,792 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_002878.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -13 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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RAD51D | ENST00000345365.11 | c.919G>A | p.Glu307Lys | missense_variant | Exon 10 of 10 | 1 | NM_002878.4 | ENSP00000338790.6 | ||
ENSG00000267618 | ENST00000593039.5 | c.426+180G>A | intron_variant | Intron 5 of 6 | 2 | ENSP00000466834.1 |
Frequencies
GnomAD3 genomes AF: 0.000762 AC: 116AN: 152212Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.000227 AC: 57AN: 251486Hom.: 0 AF XY: 0.000184 AC XY: 25AN XY: 135918
GnomAD4 exome AF: 0.0000924 AC: 135AN: 1461462Hom.: 2 Cov.: 30 AF XY: 0.0000839 AC XY: 61AN XY: 727058
GnomAD4 genome AF: 0.000762 AC: 116AN: 152330Hom.: 0 Cov.: 32 AF XY: 0.000752 AC XY: 56AN XY: 74486
ClinVar
Submissions by phenotype
not provided Uncertain:1Benign:2
In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 25186627, 28864920) -
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Hereditary cancer-predisposing syndrome Benign:3
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
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Breast-ovarian cancer, familial, susceptibility to, 4 Benign:2
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This variant is considered likely benign. This variant is strongly associated with less severe personal and family histories of cancer, typical for individuals without pathogenic variants in this gene [PMID: 25085752]. -
not specified Benign:1
Variant summary: RAD51D c.919G>A (p.Glu307Lys) results in a conservative amino acid change located in the DNA recombination and repair protein Rad51-like, C-terminal domain of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant was found in 78/277234 control chromosomes in gnomAD, but was observed primarily in the African subpopulation (70/24038 control chromosomes). The frequency within the African control individuals is more than 23-fold above the estimated maximal expected allele frequency for a pathogenic variant in RAD51D causing Hereditary Breast and Ovarian Cancer phenotype (0.00013). In addition, this variant has been found in 21/2559 African American women who are 70 years old or older and are cancer-free. These evidence strongly suggests that the variant is a benign polymorphism found primarily in populations of African origin. c.919G>A has been reported in the literature in individuals affected with Hereditary Breast and Ovarian Cancer without strong evidence for causality. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 with conflicting assessments including uncertain significance (2x) and likely benign (2x). Based on the evidence outlined above, the variant was classified as benign. -
Breast and/or ovarian cancer Benign:1
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RAD51D-related disorder Benign:1
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
Malignant tumor of breast Benign:1
RAD51D, EXON10, c.919G>A, p.Glu307Lys, Heterozygous, Likely Benign The RAD51D p.Glu307Lys variant was identified in 2 of 4316 proband chromosomes (frequency: 0.0005) from individuals or families with breast cancer (Tung 2015). The variant was also identified in dbSNP (ID: rs115031549) as "With Uncertain Significance allele", in ClinVar with Conflicting interpretations of pathogenicity (as Benign by Integrated Genetics and Colour, as Likely benign by Invitae and Ambry and as Uncertain significance by Mendelics, Quest, GeneDx and EGL Genetics). The variant was identified in control databases in 78 of 277234 chromosomes at a frequency of 0.0003 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: African in 70 of 24038 chromosomes (freq: 0.003), Other in 1 of 6468 chromosomes (freq: 0.0002), Latino in 7 of 34420 chromosomes (freq: 0.0002), but was not observed in the European Non-Finnish, Ashkenazi Jewish, East Asian, Finnish, and South Asian populations. The p.Glu307 residue is conserved in in mammals but not in more distantly related organisms however computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. Assessment Date: 2019/07/29 -
Hereditary cancer Benign:1
This variant is considered likely benign or benign based on one or more of the following: it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease, and/or has normal protein function, and/or has lack of segregation with disease, and/or has been detected in co-occurrence with known pathogenic variant, and/or has lack of disease association in case-control studies, and/or is located in a region inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at