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SALSA® MLPA® Probemix P260 PALB2-RAD50-RAD51C-RAD51D detects copy number variations in the PALB2, RAD51C, RAD51D and RAD50 genes.
Contents: 50 MLPA probes, including 13 probes for PALB2 covering all 13 exons, 9 probes for RAD51C covering all 9 exons, 10 probes for RAD51D covering all 10 exons and 8 probes for RAD50.
Tissue: genomic DNA isolated from human peripheral whole blood.
Application: breast, ovarian and other cancer types or autosomal recessive Fanconi anemia (FA) type N.
CE-marked and registered for in vitro diagnostic (IVD) use in selected territories.
The SALSA MLPA Probemix P260 PALB2-RAD50-RAD51C-RAD51D is an in vitro diagnostic (IVD) or research use only (RUO) semi-quantitative assay for the detection of deletions or duplication in the human PALB2, RAD51C, RAD51D and RAD50 genes in genomic DNA isolated from human peripheral whole blood specimens. P260 PALB2-RAD50-RAD51C-RAD51D is intended to confirm a potential cause for breast, ovarian and other cancer types in patients who are negative for BRCA1 and BRCA2 mutations. This product can also be used to determine increased cancer susceptibility in at-risk family members. Moreover, copy number variations in PALB2 can also confirm a potential cause for and clinical diagnosis of autosomal recessive Fanconi Anemia type N.
For the full intended purpose, see the product description.
PALB2, RAD50, RAD51C and RAD51D all play a role in DNA damage repair and a defect in one of these genes can lead to increased risk of tumour formation. For breast cancer, autosomal dominant mutations in the genes BRCA1 and BRCA2 are the most frequent cause, followed by mutations in PALB2, CHEK2 and ATM, though with a much lower frequency (Buys et al. 2017). Mutations in PALB2 may also increase the risk of developing pancreatic cancer, although the evidence is limited (see Table 1). Defects in both PALB2 copies can result in Fanconi Anemia (FA) type N. FA is characterized by physical abnormalities (such as short stature or abnormal skin pigmentation), bone marrow failure, and increased risk for malignancies. The incidence of FA in general is 1:160,000 - of which type N comprises less than one percent of the cases. FA type N is associated with an unusually severe predisposition to paediatric malignancies (https://www.ncbi.nlm.nih.gov/books/NBK1401/).
Autosomal dominant mutations in RAD51C or RAD51D result in increased risk for cancer, in particular ovarian cancer, while evidence of an association between RAD50 mutations and cancer risk is currently limited (see Table 1).
(Adapted from the National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines in Oncology: Genetic/Familial High-Risk Assessment: Breast, Ovarian, and Pancreatic, version 1.2022)
Gene | Cancer | Absolute risk | Strength of evidence |
---|---|---|---|
PALB2 | Breast | 41-60% | Strong (with overrepresentation of triple-negative disease) |
Epithelial Ovarian | 3-5% | Strong | |
Pancreatic | 5-10% | Limited | |
RAD51C | Breast | 15-40% | Strong for ER/PR-negative breast cancer |
Epithelial Ovarian | >10% | Strong | |
RAD51D | Breast | 15-40% | Strong for ER/PR-negative breast cancer |
Epithelial Ovarian | >10% | Strong | |
RAD50 | Breast and Epithelial Ovarian | Currently insufficient evidence of an association | Insufficient |
SALSA MLPA Probemix P260 PALB2-RAD50-RAD51C-RAD51D is CE-marked for in vitro diagnostic (IVD) use. This assay has also been registered for IVD use in Israel.
This assay is for research use only (RUO) in all other territories.
A general SALSA MLPA Reagent Kit is required for MLPA experiments (to be ordered separately).
The prices above are list prices for direct orders from MRC Holland. Contact us for a quote that takes discounts and additional costs (such as shipping costs) into account. Different prices apply for orders through one of our sales partners; contact your local supplier for a quote.
Inclusion of a positive sample is usually not required, but can be useful for the analysis of your experiments. MRC Holland has very limited access to positive samples and cannot supply such samples. We recommend using positive samples from your own collection. Alternatively, you can use positive samples from an online biorepository, such as the Coriell Institute.
The commercially available positive samples below have been tested with the current (C1) version of this product and have been shown to produce useful results.