Heritable aspects of dysplastic breast glandular tissue (DY)

Breast Cancer Research and Treatment
G HaarsD E Grobbee

Abstract

Breast parenchymal patterns, as visible on mammograms, are determined by the relative amount of radio-dense, glandular dysplastic tissue DY). High percentages of DY are related to higher breast cancer risk. Previous studies reported heritable influences on DY of 32-67%, depending on the family relationship that was studied. depending on the family relationship that was studied. We assessed heritability in 466 sister-, 25 dizygotic twin- and 26 monozygotic twin-pairs participating in a population-based breast cancer screening program; the DOM project (Diagnostic Investigation Mamma Carcinoma). The heritability was estimated for non-twin sisters, dizygotic and monozygotic twins seperately by computing correlations between siblings from the dichotomous DY-score (high risk versus low risk). This was done using methods based on the number of shared genes per sibtype. Heritability estimates were 38, 34 and 88% for sisters, dizygotic twins and monozygotic twins respectively. Heritability estimates from models that combine monozygotic twins with dizygotic twins or sisters indicated that combine monozygotic twins with dizygotic twins or sisters indicated that dominant gene effects, genetic interactions or gene-environment effects could ...Continue Reading

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Citations

Sep 6, 2008·Nature Reviews. Cancer·Linda E KelemenCeline M Vachon
Feb 16, 2005·Current Opinion in Obstetrics & Gynecology·Veronique Cocquyt, Simon Van Belle
Jul 15, 2015·Breast Cancer Research : BCR·Teresa Ramón Y CajalMarina Pollán

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