About BRIP1
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 uncertain. Select a step to read what it means.
Uncertain.The recorded classification is uncertain significance.
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.
NM_032043.3:c.143C>A is extremely rare in population databases: gnomAD v2.1 allele frequency is 0.00319% (1/31,388 alleles, genomes only, 0 homozygotes) and gnomAD v4.1 allele frequency is 0.00037% (6/1,613,830 alleles, 0 homozygotes) with grpmax filtering allele frequency of 1.24×10⁻⁶. Both are well below the 0.1% threshold for PM2 at supporting strength.
In silico analysis supports a deleterious effect of NM_032043.3:c.143C>A (p.Thr48Lys). REVEL score is 0.728, above the 0.7 threshold for damaging prediction. Multiple clinical laboratories (GeneDx, Ambry Genetics, LabCorp) also cite in silico evidence for a deleterious effect in their ClinVar submissions. BayesDel score is 0.307, which is borderline; however, the weight of evidence from REVEL and the non-conservative nature of the Thr→Lys substitution supports a deleterious prediction at the supporting level.
BRIP1 is a moderate-penetrance breast and ovarian cancer predisposition gene in which the predominant disease-causing mechanism is protein truncation. As established by Stratton and Rahman (2008, PMID:18163131), most disease-causing mutations in BRIP1 result in premature protein truncation or nonsense-mediated RNA decay, with only a small proportion likely to be rare missense variants disrupting critical functions. NM_032043.3:c.143C>A is a missense variant (p.Thr48Lys), and therefore BP1 applies at supporting benign strength.
gene-specific framework lacked a usable explicit final combination framework, so generic ACMG/AMP 2015 final-combination rules were applied as fallback; applied criteria: PM2 supporting, PP3 supporting, BP1 supporting benign; combination = 2 supporting + 1 supporting benign, which maps to VUS.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 6 / 1,613,830 alleles. Recorded AF 3.71786e-06. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 3.18593e-05; MAF= 0.00319%, 1/31388 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48593e-05; MAF= 0.00649%, 1/15418 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
5 Uncertain significance. ClinVar API review status: criteria provided, multiple submitters, no conflicts.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. BRIP1, a DEAH helicase, is altered by mutation and amplification in various cancers, including breast cancer and melanoma.
This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under Not recorded, with the data and sources behind each one.
29 criteria with recorded statuses: 3 met · 21 not met · 1 not assessed · 4 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_032043.3:c.143C>A (p.Thr48Lys) is a missense variant in BRIP1, a moderate-penetrance breast and ovarian cancer predisposition gene where the predominant disease mechanism is protein truncation.
This variant is extremely rare in population databases: gnomAD v2.1 allele frequency is 0.00319% (1/31,388 alleles) and v4.1 allele frequency is 0.00037% (6/1,613,830 alleles) with no homozygotes observed, meeting PM2 at supporting strength.
In silico analysis supports a deleterious effect: REVEL score of 0.728 exceeds the 0.7 threshold for damaging prediction; the Thr48Lys substitution is non-conservative, replacing a polar uncharged residue with a positively charged one, meeting PP3 at supporting strength.
BRIP1 disease-causing mutations predominantly result in protein truncation or nonsense-mediated RNA decay. This missense variant is not consistent with the primary disease mechanism, meeting BP1 at supporting benign strength.
This variant has been reported in ClinVar as Uncertain significance by 5 clinical laboratories (Variation ID 234642, 1-star review status). No functional studies, segregation data, de novo observations, or case-control data are available.
No functional studies or literature directly testing NM_032043.3:c.143C>A (p.Thr48Lys) or a systematically characterized residue range including position 48 were identified. The variant has not been reported in COSMIC and OncoKB reports Unknown Oncogenic Effect.
The evidence profile includes one pathogenic supporting criterion (PM2), one pathogenic supporting criterion (PP3), and one benign supporting criterion (BP1), resulting in net neutral evidence. Based on generic ACMG/AMP 2015 combination rules, this variant is classified as a Variant of Uncertain Significance.
No criteria match.
No further detail was recorded.
No further detail was recorded.
No further detail was recorded.
No further detail was recorded.
Every interpreted variant in BRIP1, mapped onto the exon structure of NM_032043.3. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| European (Finnish)1 / 64,010 | 1.6e-05 |
| European (non-Finnish)5 / 1,179,898 | 4.2e-06 |
| European (non-Finnish)1 / 15,418 | 6.5e-05 |
This variant is present in gnomAD v4.1 (AF= 3.71786e-06; MAF= 0.00037%, 6/1613830 alleles, homozygotes = 0) and has highest observed frequency in the European (Finnish) population (AF= 1.56226e-05; MAF= 0.00156%, 1/64010 alleles, homozygotes = 0); grpmax FAF= 1.24e-06.
This variant is present in gnomAD v2.1 (AF= 3.18593e-05; MAF= 0.00319%, 1/31388 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48593e-05; MAF= 0.00649%, 1/15418 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
No further detail was recorded.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.728. BayesDel score = 0.306828.
7 paper records listed. 1 cited in the classification. None of the listed paper records explicitly indicates that the variant is named.
In CHEK2, ATM, BRIP1 and PALB2, most of the disease-causing mutations result in premature protein truncation or nonsense-mediated RNA decay through nonsense codons or translational frameshifts.
Location Page 18, column 2, paragraph 1
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= 3.71786e-06; MAF= 0.00037%, 6/1613830 alleles, homozygotes = 0) and has highest observed frequency in the European (Finnish) population (AF= 1.56226e-05; MAF= 0.00156%, 1/64010 alleles, homozygotes = 0); grpmax FAF= 1.24e-06.
This variant is present in gnomAD v2.1 (AF= 3.18593e-05; MAF= 0.00319%, 1/31388 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48593e-05; MAF= 0.00649%, 1/15418 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Uncertain significance (5 clinical laboratories). (ClinVarID = 234642)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.728. BayesDel score = 0.306828.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. BRIP1, a DEAH helicase, is altered by mutation and amplification in various cancers, including breast cancer and melanoma.
This variant does not lie in a statistically significant hotspot. This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.