Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.

To test the hypothesis that in utero exposure to high levels of oestrogen increases the risk of male breast cancer, we followed 115 235 male twins for more than 3.5 million person-years at risk. We observed 11 cases of male breast cancer versus 16.16 expected based on national rates (standardized ra...

Full description

Bibliographic Details
Main Authors: Whiteman, D, Murphy, M, Verkasalo, P, Page, W, Floderus, B, Skytthe, A, Holm, N
Format: Journal article
Language:English
Published: 2000
_version_ 1797077791217287168
author Whiteman, D
Murphy, M
Verkasalo, P
Page, W
Floderus, B
Skytthe, A
Holm, N
author_facet Whiteman, D
Murphy, M
Verkasalo, P
Page, W
Floderus, B
Skytthe, A
Holm, N
author_sort Whiteman, D
collection OXFORD
description To test the hypothesis that in utero exposure to high levels of oestrogen increases the risk of male breast cancer, we followed 115 235 male twins for more than 3.5 million person-years at risk. We observed 11 cases of male breast cancer versus 16.16 expected based on national rates (standardized rate ratio 0.68, 95% confidence interval 0.34-1.22) and conclude that any adverse influence of in utero oestrogen exposure is likely to be small.
first_indexed 2024-03-07T00:23:04Z
format Journal article
id oxford-uuid:7d337ca9-80f2-432c-8e60-8fce5994d894
institution University of Oxford
language English
last_indexed 2024-03-07T00:23:04Z
publishDate 2000
record_format dspace
spelling oxford-uuid:7d337ca9-80f2-432c-8e60-8fce5994d8942022-03-26T21:02:07ZBreast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7d337ca9-80f2-432c-8e60-8fce5994d894EnglishSymplectic Elements at Oxford2000Whiteman, DMurphy, MVerkasalo, PPage, WFloderus, BSkytthe, AHolm, NTo test the hypothesis that in utero exposure to high levels of oestrogen increases the risk of male breast cancer, we followed 115 235 male twins for more than 3.5 million person-years at risk. We observed 11 cases of male breast cancer versus 16.16 expected based on national rates (standardized rate ratio 0.68, 95% confidence interval 0.34-1.22) and conclude that any adverse influence of in utero oestrogen exposure is likely to be small.
spellingShingle Whiteman, D
Murphy, M
Verkasalo, P
Page, W
Floderus, B
Skytthe, A
Holm, N
Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.
title Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.
title_full Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.
title_fullStr Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.
title_full_unstemmed Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.
title_short Breast cancer risk in male twins: joint analyses of four twin cohorts in Denmark, Finland, Sweden and the United States.
title_sort breast cancer risk in male twins joint analyses of four twin cohorts in denmark finland sweden and the united states
work_keys_str_mv AT whitemand breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates
AT murphym breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates
AT verkasalop breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates
AT pagew breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates
AT floderusb breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates
AT skytthea breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates
AT holmn breastcancerriskinmaletwinsjointanalysesoffourtwincohortsindenmarkfinlandswedenandtheunitedstates