17-61683602-G-T
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_032043.3(BRIP1):c.3444C>A(p.Asp1148Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000243 in 1,611,912 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 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_032043.3 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Likely_benign. Variant got -5 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000118 AC: 18AN: 152074Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.000104 AC: 26AN: 249810Hom.: 0 AF XY: 0.0000666 AC XY: 9AN XY: 135200
GnomAD4 exome AF: 0.000256 AC: 374AN: 1459838Hom.: 1 Cov.: 32 AF XY: 0.000237 AC XY: 172AN XY: 726320
GnomAD4 genome AF: 0.000118 AC: 18AN: 152074Hom.: 0 Cov.: 33 AF XY: 0.0000943 AC XY: 7AN XY: 74266
ClinVar
Submissions by phenotype
not provided Uncertain:3Benign:3
The BRIP1 c.3444C>A; p.Asp1148Glu variant (rs28997573) is reported in the literature in individuals with hereditary cancer syndromes but is also reported in healthy controls (Bhai 2021, Ramus 2015, Seal 2006, Tung 2015, Yurgelun 2015). This variant is also reported in ClinVar (Variation ID: 133758). It is observed in the general population with an overall allele frequency of 0.01% (29/281212 alleles) in the Genome Aggregation Database (v2.1.1). Computational analyses predict that this variant is neutral (REVEL: 0.072). Due to limited information, the clinical significance of this variant is uncertain at this time. References: Bhai P et al. Analysis of Sequence and Copy Number Variants in Canadian Patient Cohort With Familial Cancer Syndromes Using a Unique Next Generation Sequencing Based Approach. Front Genet. 2021 Jul 13;12:698595. PMID: 34326862. Ramus SJ et al. Germline Mutations in the BRIP1, BARD1, PALB2, and NBN Genes in Women With Ovarian Cancer. J Natl Cancer Inst. 2015 Aug 27;107(11):djv214. PMID: 26315354. Seal S et al. Truncating mutations in the Fanconi anemia J gene BRIP1 are low-penetrance breast cancer susceptibility alleles. Nat Genet. 2006 Nov;38(11):1239-41. PMID: 17033622. Tung N et al. Frequency of mutations in individuals with breast cancer referred for BRCA1 and BRCA2 testing using next-generation sequencing with a 25-gene panel. Cancer. 2015 Jan 1;121(1):25-33. PMID: 25186627. Yurgelun MB et al. Identification of a Variety of Mutations in Cancer Predisposition Genes in Patients With Suspected Lynch Syndrome. Gastroenterology. 2015 Sep;149(3):604-13.e20. PMID: 25980754. -
- -
Observed in individuals with personal or family history of breast, ovarian and/or other cancers, but also in healthy controls (PMID: 20159562, 21127055, 17033622, 25186627, 26315354, 25980754, 26921362, 33471991, 34326862, 38136308); In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 24728327, 26689913, 25186627, 26315354, 26921362, 17033622, 25980754, 23555315, 33471991, 20159562, 21127055, 38136308, 34326862) -
- -
- -
- -
Familial cancer of breast Uncertain:5
- -
- -
- -
This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
- -
not specified Uncertain:3Other:1
- -
Variant summary: BRIP1 c.3444C>A (p.Asp1148Glu) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0001 in 249810 control chromosomes. Although the observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 3-fold of the estimated maximal expected allele frequency for a pathogenic variant in BRIP1 causing Hereditary Breast And Ovarian Cancer Syndrome phenotype (6.3e-05), this frequency is not significantly higher than estimated for a pathogenic variant in BRIP1 causing Autosomal Recessive Fanconi Anemia Complementation Group J (0.0001 vs 0.0004), allowing no conclusion about variant significance. c.3444C>A has been reported in the literature in individuals affected with different types of cancer including breast cancer, ovarian cancer, Lynch syndrome, kidney renal clear cell carcinoma and uterine corpus endometrial carcinoma (e.g. Easton_2016, Lu_2015, Ramus_2015, Seal_2016, Tung_2015, Yurgelun_2015) but also, in controls (e.g. Easton_2016, Ramus_2015). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Breast and Ovarian Cancer Syndrome or Fanconi Anemia Complementation Group J. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 26921362, 23555315, 26689913, 26315354, 17033622, 25186627, 25980754). ClinVar contains an entry for this variant (Variation ID: 133758). Based on the evidence outlined above, the variant was classified as uncertain significance. -
- -
- -
Hereditary cancer-predisposing syndrome Uncertain:1Benign: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. -
Breast and/or ovarian cancer Uncertain:1
- -
Familial cancer of breast;C1836860:Fanconi anemia complementation group J Uncertain:1
This sequence change replaces aspartic acid, which is acidic and polar, with glutamic acid, which is acidic and polar, at codon 1148 of the BRIP1 protein (p.Asp1148Glu). This variant is present in population databases (rs28997573, gnomAD 0.02%). This missense change has been observed in individual(s) with Lynch syndrome, ovarian cancer, breast cancer, and renal clear cell carcinoma (PMID: 25186627, 25980754, 26315354, 26689913). ClinVar contains an entry for this variant (Variation ID: 133758). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt BRIP1 protein function with a negative predictive value of 95%. 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. -
Fanconi anemia complementation group J Uncertain:1
- -
Ovarian neoplasm Uncertain:1
- -
Hereditary breast ovarian cancer syndrome Benign:1
According to the ACMG SVI adaptation criteria we chose these criteria: BP4 (supporting benign): REVEL: 0.072, BS1 (supporting benign): gnomAD (v4.1.0) Grpmax Filtering AF = 0.0002926 (~ 0.03 %) 392x het. In addition Dorling, 2021 (PMID: 33471991 & LOVD): 18/60466 cases & 22/53461 controls --> OR = 0.72 (95%CI=0.39-1.35), thus <1 -
Fanconi anemia complementation group J;C5679802:Familial ovarian cancer Other:1
Variant interpreted as Uncertain significance and reported on 09-15-2017 by Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at