Prostate cancer survival is dependent on season of diagnosis
10.1002/pros.20577
Crossref journal-article
Wiley
The Prostate (311)
Abstract

AbstractBACKGROUNDWe have earlier found that the prognosis for several cancers is dependent on season of diagnosis. More recently, both prostate cancer incidence and mortality have been shown to increase with increasing latitude, which probably relates to photosynthesis of vitamin D.METHODSThe 3 year survival of prostate cancer patients has been analyzed with the Cox regression method for two age groups at different latitudes in Norway.RESULTSPatients diagnosed during the summer and autumn had the best prognosis (Ralative risk (RR) death 0.8; 95% CI 0.75–0.85). Similar results were observed in three regions of the country that differ with respect to annual fluences of solar UV radiation, incidence rates of squamous cell carcinoma (SCC) and intake of fish. Furthermore, similar relationship between the season and survival was seen among patients ≤65 years and >65 years old, although the younger group had a slightly larger advantage of summer and autumn diagnosis.CONCLUSIONSThe seasonal effect on prognosis may be related to the seasonal variations of calcidiol (the marker of vitamin D status). The lack of latitude effect and the similarity of prognosis for different age groups may be related to higher consumption of vitamin D in food in the north region and to increase of such consumption with age. Prostate 67: 1362–1370, 2007. © 2007 Wiley‐Liss, Inc.

Bibliography

Lagunova, Z., Porojnicu, A. C., Dahlback, A., Berg, J. P., Beer, T. M., & Moan, J. (2007). Prostate cancer survival is dependent on season of diagnosis. The Prostate, 67(12), 1362–1370. Portico.

Authors 6
  1. Zoya Lagunova (first)
  2. Alina Carmen Porojnicu (additional)
  3. Arne Dahlback (additional)
  4. Jens Petter Berg (additional)
  5. Tomasz M. Beer (additional)
  6. Johan Moan (additional)
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Dates
Type When
Created 18 years, 1 month ago (July 11, 2007, 11:46 a.m.)
Deposited 1 year, 9 months ago (Nov. 14, 2023, 11:45 p.m.)
Indexed 1 year ago (Aug. 7, 2024, 11:52 a.m.)
Issued 18 years, 1 month ago (July 11, 2007)
Published 18 years, 1 month ago (July 11, 2007)
Published Online 18 years, 1 month ago (July 11, 2007)
Published Print 18 years ago (Sept. 1, 2007)
Funders 0

None

@article{Lagunova_2007, title={Prostate cancer survival is dependent on season of diagnosis}, volume={67}, ISSN={1097-0045}, url={http://dx.doi.org/10.1002/pros.20577}, DOI={10.1002/pros.20577}, number={12}, journal={The Prostate}, publisher={Wiley}, author={Lagunova, Zoya and Porojnicu, Alina Carmen and Dahlback, Arne and Berg, Jens Petter and Beer, Tomasz M. and Moan, Johan}, year={2007}, month=jul, pages={1362–1370} }