About RAD51B
No gene-level summary was recorded for this case.
No variant summary was recorded for this case.
Five-step scale from benign to pathogenic. This variant is likely benign. Select a step to read what it means.
Likely benign.A likely benign classification under the recorded framework.
Gene-level background from the recorded interpretation.
Words with a dotted underline have a short definition. Hover or tap them.No gene-level summary was recorded for this case.
The recorded framework is Not recorded. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.
The applied criteria and their strengths are shown as assessed under the stated framework.
No pathogenic criterion marked as applied in the recorded assessment.
The gnomAD v4.1 grpmax filtering allele frequency is 0.89%, exceeding the 0.3% BS1 threshold for generic non-VCEP ACMG adjudication. The Middle Eastern subpopulation allele frequency is 1.11% with 1 homozygote. In aggregate across v4.1, 2 homozygotes are observed in 1,613,538 alleles (621 total alleles). For a cancer predisposition gene where pathogenic variants are expected to be rare, this population frequency and the presence of homozygotes in ostensibly healthy population controls strongly supports a benign interpretation.
Multiple lines of computational evidence consistently predict no impact on gene product: REVEL score 0.017 (well below 0.5 deleterious threshold), BayesDel score -0.558 (negative = benign), and SpliceAI max delta score 0.03 (no predicted splicing alteration). All available in silico tools concur in a benign assessment.
Ambry Genetics, a reputable clinical diagnostic laboratory, has classified this variant as Likely benign with criteria provided (ClinVar accession SCV005488250). While the review status is 'criteria provided, single submitter' and not an expert panel consensus, the classification from a clinical testing laboratory with established variant interpretation practices supports a benign interpretation.
gene-specific framework lacked a usable explicit final combination framework, so generic ACMG/AMP 2015 final-combination rules were applied as fallback; applied criteria: BS1 strong benign, BP4 supporting benign, BP6 supporting benign; combination = 1 strong benign + 2 supporting benign, which maps to Likely Benign.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 621 / 1,613,538 alleles. Recorded AF 0.000384869. Recorded homozygote count 2.
This variant is present in gnomAD v2.1 (AF= 0.000424385; MAF= 0.04244%, 120/282762 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.00110834; MAF= 0.11083%, 8/7218 alleles, homozygotes = 0); grpmax FAF= 0.00070522.
This variant is present in gnomAD-Canada v1.0 (AF= 0.0011943539630836048, 22/18420 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.030. Refer to the recorded PP3/BP4 rationale for interpretation.
1 Uncertain significance · 1 Likely benign.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. RAD51B, a DNA repair protein involved in homologous recombination, is altered by mutation in various cancer types.
This variant has previously been reported in somatic cancers (COSMIC; COSV66842132, n = 1 times).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under Not recorded, with the data and sources behind each one.
26 criteria with recorded statuses: 3 met · 16 not met · 2 not assessed · 5 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_133509.4:c.226G>A (p.Ala76Thr) is a missense variant in exon 4 of RAD51B that is present in gnomAD v4.1 at a grpmax filtering allele frequency of 0.89%, exceeding the BS1 threshold of 0.3%, with 2 homozygotes observed in the general population.
Multiple in silico predictors consistently indicate a benign effect for this amino acid substitution: REVEL score 0.017, BayesDel score -0.558, and SpliceAI max delta 0.03, meeting BP4 at supporting benign strength.
Ambry Genetics, a clinical diagnostic laboratory, has classified this variant as Likely benign (ClinVar SCV005488250, criteria provided), meeting BP6 at supporting benign strength.
No pathogenic criteria are met. PVS1 is not applicable as the variant is missense. PS1-PS4, PM1-PM2, PM6, PP1-PP5, BS3-BS4, and BP1-BP2 are either not met or not applicable.
No criteria match.
Every interpreted variant in RAD51B, mapped onto the exon structure of NM_133509.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| Middle Eastern67 / 6,058 | 0.0111 hom |
| Admixed American80 / 59,992 | 0.0013 |
| South Asian97 / 91,058 | 0.00111 hom |
| Remaining individuals34 / 62,494 | 0.00054 |
| European (non-Finnish)326 / 1,179,564 | 0.00028 |
| African/African American15 / 74,990 | 0.0002 |
| Ashkenazi Jewish2 / 29,600 | 6.8e-05 |
| Remaining individuals8 / 7,218 | 0.0011 |
| South Asian30 / 30,614 | 0.00098 |
| Admixed American27 / 35,404 | 0.00076 |
| European (non-Finnish)52 / 129,126 | 0.0004 |
| Ashkenazi Jewish3 / 10,368 | 0.00029 |
This variant is present in gnomAD v4.1 (AF= 0.000384869; MAF= 0.03849%, 621/1613538 alleles, homozygotes = 2) and has highest observed frequency in the Middle Eastern population (AF= 0.0110598; MAF= 1.10598%, 67/6058 alleles, homozygotes = 1); grpmax FAF= 0.00893491.
This variant is present in gnomAD v2.1 (AF= 0.000424385; MAF= 0.04244%, 120/282762 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.00110834; MAF= 0.11083%, 8/7218 alleles, homozygotes = 0); grpmax FAF= 0.00070522.
This variant is present in gnomAD-Canada v1.0 (AF= 0.0011943539630836048, 22/18420 alleles, homozygotes = 0).
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.03). REVEL score = 0.017. BayesDel score = -0.557559.
2 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata. None of the listed paper records explicitly indicates that the variant is named.
Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.
The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.
This variant is present in gnomAD v4.1 (AF= 0.000384869; MAF= 0.03849%, 621/1613538 alleles, homozygotes = 2) and has highest observed frequency in the Middle Eastern population (AF= 0.0110598; MAF= 1.10598%, 67/6058 alleles, homozygotes = 1); grpmax FAF= 0.00893491.
This variant is present in gnomAD v2.1 (AF= 0.000424385; MAF= 0.04244%, 120/282762 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.00110834; MAF= 0.11083%, 8/7218 alleles, homozygotes = 0); grpmax FAF= 0.00070522.
This variant is present in gnomAD-Canada v1.0 (AF= 0.0011943539630836048, 22/18420 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Uncertain significance (1 clinical laboratory) and as Likely benign (1 clinical laboratory). (ClinVarID = 584552)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.03). REVEL score = 0.017. BayesDel score = -0.557559.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. RAD51B, a DNA repair protein involved in homologous recombination, is altered by mutation in various cancer types.
This variant does not lie in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV66842132, n = 1 times).
This variant does not lie in a statistically significant hotspot.