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SALSA® MLPA® Probemix P083 CDH1 detects copy number variations in the CDH1 gene.
Contents: 35 MLPA probes, including 20 probes for the CDH1 gene region.
Tissue: genomic DNA isolated from human peripheral whole blood. Research use: genomic DNA from fresh and frozen tumour tissue.
Application: hereditary diffuse gastric cancer (HDGC) and/or lobular breast cancer.
CE-marked and registered for in vitro diagnostic (IVD) use in selected territories.
The SALSA MLPA Probemix P083 CDH1 is an in vitro diagnostic (IVD) or research use only (RUO) semi-quantitative assay for the detection of deletions or duplications in the CDH1 gene in genomic DNA isolated from human peripheral whole blood specimens and Research Use Only (RUO) assay on DNA isolated from fresh and frozen tumour tissue. P083 CDH1 is intended to confirm a potential cause for and clinical diagnosis of Hereditary Diffuse Gastric Cancer and/or Lobular Breast Cancer, and for molecular genetic testing of at-risk family members.
For the full intended purpose, see the product description.
Germline heterozygous mutations in the CDH1 gene have been reported in approximately 30-50% of families with a hereditary predisposition to diffuse gastric cancer (Oliveira et al. 2013). Cadherin-1 (CDH1) also known as E-cadherin is a classical cadherin from the cadherin superfamily. The encoded protein is a calcium dependent cell-cell adhesion glycoprotein. Reduced expression of CDH1 is regarded as one of the main molecular events involved in dysfunction of the cell-cell adhesion system, triggering cancer invasion and metastasis.
Hereditary diffuse gastric cancer (HDGC) accounts for <1% of all gastric cancer patients (Sugimoto et al. 2015). The majority of the cancers in individuals with a CDH1 pathogenic variant occur before the age of 40. The penetrance of HDGC is incomplete and the estimated cumulative risk of gastric cancer by age 80 years is 70% for men and 56% for women. The frequency of CDH1 large deletions in hereditary diffuse gastric cancer is ~4% (Sugimoto et al. 2015, Oliveira et al. 2013, https://www.ncbi.nlm.nih.gov/books/NBK1139/).
If gastric cancer is detected early and is resected, the 5-year survival rate can be greater than 90%. However, HDGC has an infiltrative growth pattern and is difficult to diagnose. Once symptoms appear, affected individuals are in an advanced stage of the disease with a poor prognosis, with a 5-year survival rate lower than 20% (Oliveira et al. 2013). Therefore, clinical management options for carriers of germline CDH1 mutations include prophylactic gastrectomy and/or an intensive regimen of endoscopic surveillance. However, the value of a surveillance regime is not yet proven, as in most cases the gastric cancer is not detected until it reaches an incurable, advanced stage.
In addition, women also have a 42% risk for developing lobular breast cancer. For women carrying a CDH1 mutation, regular breast screening is recommended (Oliveira et al. 2013). Lobular breast cancer can be the first manifestation of HDGC, also in patients without a history of gastric cancer (Benusiglio et al. 2013).
More information on HDGC is available at: https://www.ncbi.nlm.nih.gov/books/NBK1139/.
SALSA MLPA Probemix P083 CDH1 is CE-marked for in vitro diagnostic (IVD) use. This assay has also been registered for IVD use in Colombia and 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 (D2) version of this product and have been shown to produce useful results.