chr17-35101204-T-C
Variant summary
Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_Very_StrongBP7BS2_Supporting
The NM_002878.4(RAD51D):c.900A>G(p.Arg300Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000384 in 1,614,114 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 Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. R300R) has been classified as Likely benign.
Frequency
Consequence
NM_002878.4 synonymous
Scores
Clinical Significance
Conservation
Publications
- breast-ovarian cancer, familial, susceptibility to, 4Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
- hereditary breast ovarian cancer syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- hereditary breast carcinomaInheritance: AD Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Benign. The variant received -14 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RAD51D | ENST00000345365.11 | c.900A>G | p.Arg300Arg | synonymous_variant | Exon 9 of 10 | 1 | NM_002878.4 | ENSP00000338790.6 | ||
| ENSG00000267618 | ENST00000593039.5 | c.423A>G | p.Arg141Arg | synonymous_variant | Exon 5 of 7 | 2 | ENSP00000466834.1 |
Frequencies
GnomAD3 genomes AF: 0.0000329 AC: 5AN: 152148Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000398 AC: 10AN: 251378 AF XY: 0.0000442 show subpopulations
GnomAD4 exome AF: 0.0000390 AC: 57AN: 1461848Hom.: 0 Cov.: 31 AF XY: 0.0000426 AC XY: 31AN XY: 727222 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000328 AC: 5AN: 152266Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74460 show subpopulations
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Benign:5
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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. -
BP4, BP7 c.900A>G, located in exon 9 of the RAD51D gene, is predicted to result in no splicing alteration (according to SpliceAI) and no amino acid change, p.(Arg300=) (BP4 and BP7). This variant is found in 10/268267 alleles at a frequency of 0.004% in the gnomAD v2.1.1 database, non-cancer dataset. To our knowledge, neither relevant clinical data nor well-established functional studies have been reported for this variant. This variant has been reported in the ClinVar database (10x likely benign), and in the LOVD database (1x uncertain significance). Based on currently available information, the variant c.900A>G should be considered a likely benign variant. -
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Breast-ovarian cancer, familial, susceptibility to, 4 Benign:4
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This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
not provided Benign:2
This variant is associated with the following publications: (PMID: 21822267, 23372765) -
RAD51D: BP4, BP7 -
not specified Benign:1
Variant summary: RAD51D c.900A>G alters a non-conserved nucleotide resulting in a synonymous change. 4/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 4.4e-05 in 249236 control chromosomes (gnomAD and publications). This frequency is near the estimated maximal expected allele frequency of a pathogenic RAD51D variant (0.00013), suggesting this is likely a benign polymorphism. The variant was also reported in the FLOSSIES database in a woman older than age 70 years who has never had cancer. To our knowledge, no occurrence of c.900A>G in individuals affected with Hereditary Breast and Ovarian Cancer and no experimental evidence demonstrating its impact on protein function have been reported. Four ClinVar submissions from clinical diagnostic laboratories (evaluation after 2014) cite the variant as likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -
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). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at