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Published in: BMC Women's Health 1/2015

Open Access 01-12-2015 | Research article

Breast cancer risk and genetic ancestry: a case–control study in Uruguay

Authors: Carolina Bonilla, Bernardo Bertoni, Pedro C Hidalgo, Nora Artagaveytia, Elizabeth Ackermann, Isabel Barreto, Paula Cancela, Mónica Cappetta, Ana Egaña, Gonzalo Figueiro, Silvina Heinzen, Stanley Hooker, Estela Román, Mónica Sans, Rick A Kittles

Published in: BMC Women's Health | Issue 1/2015

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Abstract

Background

Uruguay exhibits one of the highest rates of breast cancer in Latin America, similar to those of developed nations, the reasons for which are not completely understood. In this study we investigated the effect that ancestral background has on breast cancer susceptibility among Uruguayan women.

Methods

We carried out a case–control study of 328 (164 cases, 164 controls) women enrolled in public hospitals and private clinics across the country. We estimated ancestral proportions using a panel of nuclear and mitochondrial ancestry informative markers (AIMs) and tested their association with breast cancer risk.

Results

Nuclear individual ancestry in cases was (mean ± SD) 9.8 ± 7.6% African, 13.2 ± 10.2% Native American and 77.1 ± 13.1% European, and in controls 9.1 ± 7.5% African, 14.7 ± 11.2% Native American and 76.2 ± 14.2% European. There was no evidence of a difference in nuclear or mitochondrial ancestry between cases and controls. However, European mitochondrial haplogroup H was associated with breast cancer (OR = 2.0; 95% CI 1.1, 3.5).

Conclusions

We have not found evidence that overall genetic ancestry differs between breast cancer patients and controls in Uruguay but we detected an association of the disease with a European mitochondrial lineage, which warrants further investigation.
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Metadata
Title
Breast cancer risk and genetic ancestry: a case–control study in Uruguay
Authors
Carolina Bonilla
Bernardo Bertoni
Pedro C Hidalgo
Nora Artagaveytia
Elizabeth Ackermann
Isabel Barreto
Paula Cancela
Mónica Cappetta
Ana Egaña
Gonzalo Figueiro
Silvina Heinzen
Stanley Hooker
Estela Román
Mónica Sans
Rick A Kittles
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Women's Health / Issue 1/2015
Electronic ISSN: 1472-6874
DOI
https://doi.org/10.1186/s12905-015-0171-8

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