Identification of a novel BRCA1 nucleotide 4803delCC/c.4684delCC mutation and a nucleotide 249T>A/c.130T>A (p.Cys44Ser) mutation in two Greenlandic Inuit families: implications for genetic screening of Greenlandic Inuit families with high risk for breast and/or ovarian cancer
Research output: Contribution to journal › Journal article › Research › peer-review
Germ-line mutations in the tumour suppressor proteins BRCA1 and BRCA2 predispose to breast and ovarian cancer. We have recently identified a Greenlandic Inuit BRCA1 nucleotide 234T>G/c.115T>G (p.Cys39Gly) founder mutation, which at that time was the only disease-causing BRCA1/BRCA2 mutation identified in this population. Here, we describe the identification of a novel disease-causing BRCA1 nucleotide 4803delCC/c.4684delCC mutation in a Greenlandic Inuit with ovarian cancer. The mutation introduces a frameshift and a premature stop at codon 1572. We have also identified a BRCA1 nucleotide 249T>A/c.130T>A (p.Cys44Ser) mutation in another Greenlandic individual with ovarian cancer. This patient share a 1-2 Mb genomic fragment, containing the BRCA1 gene, with four Danish families harbouring the same mutation, suggesting that the 249T>A/c.130T>A (p.Cys44Ser) mutation originates from a Danish ancestor. We conclude that screening of Greenlandic Inuits with high risk of breast or ovarian cancer should include sequencing of the entire BRCA1 gene.
Original language | English |
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Journal | Breast Cancer Research and Treatment |
Volume | 124 |
Issue number | 1 |
Pages (from-to) | 259-264 |
Number of pages | 6 |
ISSN | 0167-6806 |
DOIs | |
Publication status | Published - 2010 |
- Adult, BRCA1 Protein, Base Sequence, Breast Neoplasms, Codon, Nonsense, DNA Mutational Analysis, Female, Founder Effect, Frameshift Mutation, Genetic Predisposition to Disease, Genetic Testing, Greenland, Heredity, Humans, Inuits, Middle Aged, Molecular Sequence Data, Ovarian Neoplasms, Pedigree, Risk Assessment, Risk Factors, Sequence Deletion
Research areas
ID: 45422136