El equipo de investigadores del Centre for Research in Women´s Health de Toronto (Canadá) comparó los datos de 965 mujeres con cáncer de mama y un número similar de control de mujeres sin cáncer de mama ni de ovario. Entre las 685 mujeres con mutaciones del gen BRCA1, el promedio de duración de la lactancia fue significativamente inferior en aquellas que desarrollaron cáncer que en las que no lo hicieron.
Los investigadores descubrieron que las portadoras de estas mutaciones que habían amamantado durante más de un año presentaron un 60% de menor riesgo que las que nunca lo habían hecho. Por el contrario, no encontraron esta asociación en portadoras de mutaciones BRCA2. Los autores sostienen que estos resultados muestran que es posible modificar el riesgo de cáncer de mama entre las mujeres portadoras de mutaciones del BRCA1 sin necesidad de recurrir a la cirugía.
Webs Relacionadas
Centre for Research in Women´s Health, Toronto
http://www.crwh.org/home.php/
Journal of the National Cancer Institute
http://jncicancerspectrum.oupjournals.org/
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