rs4988349
Variant summary
Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_ModerateBP6
The NM_032043.3(BRIP1):c.1619A>T(p.Gln540Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000174 in 1,612,486 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 Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_032043.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -3 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 152226Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000358 AC: 9AN: 251070Hom.: 0 AF XY: 0.0000368 AC XY: 5AN XY: 135688
GnomAD4 exome AF: 0.0000164 AC: 24AN: 1460260Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8AN XY: 726470
GnomAD4 genome AF: 0.0000263 AC: 4AN: 152226Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74378
ClinVar
Submissions by phenotype
Familial cancer of breast Uncertain:3
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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. -
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Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
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The p.Q540L variant (also known as c.1619A>T), located in coding exon 10 of the BRIP1 gene, results from an A to T substitution at nucleotide position 1619. The glutamine at codon 540 is replaced by leucine, an amino acid with dissimilar properties. This alteration has been reported in 1/21 BRCA1/2-negative individuals with a personal and family history of breast cancer; however, it was not found in seven of the proband's relatives, including three relatives with breast cancer (Rutter JL et al. Hum. Mutat. 2003 Aug;22:121-8). This alteration has also been reported in a cohort of 48143 individuals diagnosed with invasive breast cancer before the age of 55 years and was not observed in 43608 control subjects (Easton DF et al. J. Med. Genet. 2016 May;53:298-309). In another study, this alteration was observed in 0/706 cases with ovarian cancer, 0/6,341 cases with breast cancer and in 1/36,687 controls (Weber-Lassalle N et al. Breast Cancer Res. 2018 Jan;20:7). In one study, this alteration was detected in 1/2160 early-onset breast cancer cases and 1/1,199 ovarian cancer cases; the patient with ovarian cancer also had a pathogenic alteration in BRCA1 or BRCA2 (Moyer CL et al. Cancer Res. 2020 Feb;80:857-867). This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
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Familial cancer of breast;C1836860:Fanconi anemia complementation group J Uncertain:1Benign:1
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not specified Uncertain:1
Variant summary: The BRIP1 c.1619A>T (p.Gln540Leu) variant involves the alteration of a conserved nucleotide and 2/4 in silico tools predict a benign outcome for this variant (SNPsandGO not captured due to low reliability index). However, these predictions have yet to be functionally assessed. This variant was found in 7/349872 control chromosomes (gnomAD), predominantly observed in the Ashkenazi Jewish subpopulation at a frequency of 0.000712 (7/9838). This frequency is about 11 times the estimated maximal expected allele frequency of a pathogenic BRIP1 variant (0.0000625), suggesting this is likely a benign polymorphism found primarily in those of Ashkenazi Jewish origin. A publication, Rutter_2003, indicates the variant was found in a Breast Cancer family, which three affected family members did not carry the variant of interest showing lack of cosegregation. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance. Taken together, this variant is classified as a "Variant of Uncertain Significance - Possibly Benign." -
Ovarian neoplasm;C1836860:Fanconi anemia complementation group J Uncertain:1
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not provided Uncertain:1
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26659599, 31822495, 12872252, 26921362, 19584272, 27527004, 29368626, 36845387) -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at