Loss of genetic markers on chromosome 17p13.3 in breast cancer
Author Information
Author(s): Liscia D S, Morizio R, Venesio T, Palenzona C, Donadio M, Callahan R
Primary Institution: Servizio di Anatomia Patologica, Dipartimento Oncologico ASL-1, Torino, Italy
Hypothesis
Loss of heterozygosity at loci on chromosome 17p13.3-ter is associated with poor prognosis in sporadic breast cancer.
Conclusion
The loss of genetic markers on chromosome 17p13.3 is linked to lower survival rates in breast cancer patients.
Supporting Evidence
- 65 of 143 heterozygous tumors had lost at least one of the markers.
- High levels of loss of markers on 17p13.3 are independent of TP53 mutations.
- Loss of these markers correlates with disease-free and overall survival.
Takeaway
If a breast cancer patient loses certain genetic markers, it might mean their cancer is more serious and they may not live as long.
Methodology
The study mapped the 17p13.3-ter locus in tumor DNA and matched normal lymphocyte DNA using four markers.
Participant Demographics
Breast cancer patients with heterozygous tumors.
Statistical Information
P-Value
0.004 for disease-free survival; 0.007 for overall survival
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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