Change search
ReferencesLink to record
Permanent link

Direct link
Time dependent effects of adjuvant tamoxifen therapy on cerebrovascular disease: results from a randomised trial
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
Show others and affiliations
2011 (English)In: British Journal of Cancer, ISSN 0007-0920, E-ISSN 1532-1827, Vol. 104, no 6, 899-902 p.Article in journal (Refereed) Published
Abstract [en]


Tamoxifen has been associated with an increased risk of stroke. There is, however, little information on the effect in the post-treatment period. Using data from the Swedish Breast Cancer Group adjuvant trial of 5 vs 2 years of tamoxifen treatment, we now report both short-term and long-term effects on morbidity as well as mortality because of cerebrovascular disease.


Data from the Swedish National Hospital Discharge Registry combined with information from the Swedish Cause of Death Registry was used to define events of disease. Hazard ratios (HRs) were estimated using Cox regression.


Comparing patients randomised to 5 years of tamoxifen with patients randomised to 2 years of tamoxifen, the incidence of cerebrovascular diseases was increased (HR 1.70, 95% CI 1.05–2.75) during the active treatment phase and reduced after the active treatment period (HR 0.78, 95% CI 0.63–0.96), and the difference in HR between the two time-periods was significant (P=0.0033). The mortality from cerebrovascular diseases was increased during the treatment period (HR 3.18, 95% CI 1.03–9.87) and decreased during the post-treatment period (HR 0.60, 95% CI 0.40–0.90) with a significant difference in HR between the two periods of follow-up (P=0.0066). Similar results were seen for subgroups of cerebrovascular diseases, such as stroke and ischaemic stroke.


In an adjuvant setting, tamoxifen was associated with an increased risk of cerebrovascular disease during treatment, but a decreased risk in the post-treatment period.

Place, publisher, year, edition, pages
Nature Publishing Group , 2011. Vol. 104, no 6, 899-902 p.
Keyword [en]
breast cancer, tamoxifen, adjuvant treatment, adverse events, cerebrovascular disease
URN: urn:nbn:se:umu:diva-45487DOI: 10.1038/bjc.2011.45PubMedID: 21343938OAI: diva2:429743
Available from: 2011-07-05 Created: 2011-07-05 Last updated: 2011-08-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Bengtsson, Nils-Olof
By organisation
In the same journal
British Journal of Cancer

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 71 hits
ReferencesLink to record
Permanent link

Direct link