BRCA2-8765delAG Mutation in Breast Cancer
Author Information
Author(s): Palomba Grazia, Cossu Antonio, Friedman Eitan, Budroni Mario, Farris Antonio, Contu Antonio, Pisano Marina, Baldinu Paola, Sini Maria C, Tanda Francesco, Palmieri Giuseppe
Primary Institution: Istituto di Chimica Biomolecolare-Consiglio Nazionale Ricerche, Sassari, Italy
Hypothesis
What is the prevalence and origin of the BRCA2-8765delAG mutation in breast cancer families from Sardinia and other populations?
Conclusion
The BRCA2-8765delAG mutation has an independent origin in geographically and ethnically distinct populations, acting as a founder mutation in North but not in South Sardinia.
Supporting Evidence
- The BRCA2-8765delAG mutation was found in 9 out of 648 breast cancer cases from North Sardinia.
- No cases of the mutation were found in 493 breast cancer cases from South Sardinia.
- Families from North Sardinia shared the same haplotype, indicating a common ancestral origin.
Takeaway
This study found a specific mutation in breast cancer that is common in some areas but not in others, showing that where you live can affect your risk of getting certain types of cancer.
Methodology
Haplotype analysis using microsatellite markers and screening for the BRCA2-8765delAG mutation through PCR and sequencing.
Potential Biases
Potential bias in participant selection and reporting of family history.
Limitations
The study may not account for all genetic factors influencing the mutation's prevalence in different populations.
Participant Demographics
Participants included breast cancer patients from North Sardinia, South Sardinia, Israel, and French-Canadian families.
Statistical Information
P-Value
0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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