1. SNPs in DNA repair or oxidative stress genes and late subcutaneous fibrosis in patients following single shot partial breast irradiation.
- Author
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Falvo E, Strigari L, Citro G, Giordano C, Boboc G, Fabretti F, Bruzzaniti V, Bellesi L, Muti P, Blandino G, and Pinnarò P
- Subjects
- Aged, Aged, 80 and over, Breast Neoplasms pathology, DNA Repair genetics, DNA-Binding Proteins genetics, Female, Fibrosis pathology, Follow-Up Studies, Genetic Association Studies, Humans, Middle Aged, Organic Anion Transporters genetics, Oxidative Stress genetics, Rad51 Recombinase genetics, X-ray Repair Cross Complementing Protein 1, Breast Neoplasms genetics, Breast Neoplasms radiotherapy, DNA Repair radiation effects, Oxidative Stress radiation effects, Polymorphism, Single Nucleotide genetics, Radiotherapy adverse effects
- Abstract
Background: The aim of this study was to evaluate the potential association between single nucleotide polymorphisms related response to radiotherapy injury, such as genes related to DNA repair or enzymes involved in anti-oxidative activities. The paper aims to identify marker genes able to predict an increased risk of late toxicity studying our group of patients who underwent a Single Shot 3D-CRT PBI (SSPBI) after BCS (breast conserving surgery)., Methods: A total of 57 breast cancer patients who underwent SSPBI were genotyped for SNPs (single nucleotide polymorphisms) in XRCC1, XRCC3, GST and RAD51 by Pyrosequencing technology. Univariate analysis (ORs and 95% CI) was performed to correlate SNPs with the risk of developing ≥ G2 fibrosis or fat necrosis., Results: A higher significant risk of developing ≥ G2 fibrosis or fat necrosis in patients with: polymorphic variant GSTP1 (Ile105Val) (OR = 2.9; 95%CI, 0.88-10.14, p = 0.047)., Conclusions: The presence of some SNPs involved in DNA repair or response to oxidative stress seem to be able to predict late toxicity., Trial Registration: ClinicalTrials.gov: NCT01316328.
- Published
- 2012
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