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There is a lack of consensus about the influence of GST M1/T1 gene deletions (DEL) on sporadic breast cancer (SBC). To evaluate the occurrence of DEL in 177 SBC cases and in 169 controls, and compare clinical and biological characteristics. A lower frequency of GSTM1 DEL was observed in mulatto women, OR=0.48 (0.24–0.98). The risk of nuclear grade 3 tumors (GN3) was lower in patients with GSTT1 DEL,...
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