Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong
The NM_007294.4(BRCA1):c.5332+13G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000136 in 1,613,050 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 (★★).
BRCA1 (HGNC:1100): (BRCA1 DNA repair associated) This gene encodes a 190 kD nuclear phosphoprotein that plays a role in maintaining genomic stability, and it also acts as a tumor suppressor. The BRCA1 gene contains 22 exons spanning about 110 kb of DNA. The encoded protein combines with other tumor suppressors, DNA damage sensors, and signal transducers to form a large multi-subunit protein complex known as the BRCA1-associated genome surveillance complex (BASC). This gene product associates with RNA polymerase II, and through the C-terminal domain, also interacts with histone deacetylase complexes. This protein thus plays a role in transcription, DNA repair of double-stranded breaks, and recombination. Mutations in this gene are responsible for approximately 40% of inherited breast cancers and more than 80% of inherited breast and ovarian cancers. Alternative splicing plays a role in modulating the subcellular localization and physiological function of this gene. Many alternatively spliced transcript variants, some of which are disease-associated mutations, have been described for this gene, but the full-length natures of only some of these variants has been described. A related pseudogene, which is also located on chromosome 17, has been identified. [provided by RefSeq, May 2020]
Computational evidence support a benign effect (BayesDel_noAF=-0.82).
BP6
Variant 17-43051050-C-A is Benign according to our data. Variant chr17-43051050-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 220900.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-43051050-C-A is described in Lovd as [Benign]. Variant chr17-43051050-C-A is described in Lovd as [Likely_benign].
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter
clinical testing
Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital
Aug 15, 2023
- -
Likely benign, criteria provided, single submitter
clinical testing
Cancer Genetics and Genomics Laboratory, British Columbia Cancer Agency
Apr 19, 2017
- -
Hereditary breast ovarian cancer syndrome Benign:2
Benign, criteria provided, single submitter
clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Mar 28, 2016
Variant summary: The c.5332+13G>T variant affects a non-conserved intronic nucleotide. One in-silico tool predicts benign outcome for this variant. 4/5 programs in Alamut predict that this variant does not affect normal splicing. this prediction has been confirmed by multiple experimental studies. This variant is found exclusively in 7/66330 European (Non-Finnish) control chromosomes at a frequency of 0.000105533, which does not significantly exceed maximal expected frequency of a pathogenic allele (0.0010005). Co-occurrences with pathogenic BRCA1 variants have been reported in three patients (UMD database). In addition, one clinical laboratory classified this variant as benign. Taken together, this variant was classified as benign. -
Benign, criteria provided, single submitter
clinical testing
Labcorp Genetics (formerly Invitae), Labcorp
Jan 25, 2024
- -
Breast-ovarian cancer, familial, susceptibility to, 1 Benign:1
Likely benign, criteria provided, single submitter
clinical testing
Fulgent Genetics, Fulgent Genetics
Aug 07, 2015
- -
Hereditary cancer-predisposing syndrome Benign:1
Likely benign, criteria provided, single submitter