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Lung cancer takes the place of breast cancer as the leading cause of death from cancer in women

No. 06 | 02/02/2015 | by Koh

Epidemiologists have predicted it for years, and now the moment has come: For the first time ever, lung cancer will replace breast cancer as the leading cause of death from cancer in women. On the occasion of Word Cancer Day 2015, the German Cancer Research Center (DKFZ) reports that this change in the rankings of cancer mortality, originally determined for all of Europe, has also been observed in Germany.

© B. Engelhardt/DKFZ

Cancer death rates have been declining throughout Europe – by approximately 6 percent for women and by 7.5 percent for men compared to 2009, as epidemiologists from Italy have recently reported*. However, while death rates from almost all types of cancer are declining, the death toll from lung cancer amongst women is predicted to be nine percent higher in 2015 than it was in 2009.

“This change in the leading causes of death from cancer in women is also observable in Germany,” says epidemiologist Professor Nikolaus Becker of the German Cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ). Since 1984, Nikolaus Becker has edited and made available data on cancer mortality in Germany for the “Krebsatlas” (Cancer Atlas). Although figures for 2013 and 2014 are not yet available, scientists can extrapolate certain long-term, stable trends. “The dropping curve of the death rate for breast cancer and the steeply rising one for lung cancer in women have been running for many years toward an intersection point by about 2015,” Becker explains.

The absolute figures for breast cancer are still higher than those for lung cancer: In 2012, breast cancer claimed the lives of 15,000 women, whereas lung cancer accounted for 12,800 deaths in women. However, the age-adjusted death rates for both types of cancer in women have now become equal for the first time. In 2012, for every 100,000 German women, the age-adjusted death rates for breast cancer and lung cancer were 16.5 percent and 15.5 percent, respectively. By 2015, these figures are expected to be equal.

Dr. Martina Pötschke-Langer, who leads DKFZ’s Cancer Prevention Unit, calls this change in the leading causes of death from cancer a “predicted catastrophe.” “The significant rise in lung cancer deaths among women started more than ten years ago,” says Pötschke-Langer, “and now this trend has appeared to reach a peak. We have kept warning about this disastrous development. It is tragic that a mostly preventable disease is now reaching the highest [cancer] mortality rate and taking an increasing toll on women.” Eighty-five to 90 percent of all cases of lung cancer are considered to be tobacco-related and, therefore, preventable.

The consumption of cigarettes continues to be high among women between 25 and 69 years of age. It had even been continuously on the rise until 2003, when it started to drop slightly. “Therefore, we cannot expect the trend for lung cancer mortality to change very soon,” says Pötschke-Langer. To illustrate this, she cites the famous British epidemiologist Richard Peto, who once said: “If women smoke like men, they die like men.”

Until about two decades ago, the rate of new cases of lung cancer was more than three times higher for men than for women. However, the smoking rate among men has been on the decline since the late 1970s. This was reflected by a drop in lung cancer mortality that started around 1990.

Professor Otmar D. Wiestler, Chairman of the Management Board and Scientific Director of DKFZ, also sees some good news in this development: “Breast cancer has been regarded as a dreadful killer among women for decades. But although ever more women develop breast cancer, fewer of them die from it now than they did about ten years ago. Cancer treatment is developing at an extremely rapid pace and we are now seeing the first fruits of success in the positive trend towards declining death rates from breast cancer."

For the short term, oncologists are hoping that new, highly effective immunotherapies may for the first time also achieve better treatment outcomes in some cases of lung cancer.

*M. Malvezzi, P. Bertuccio1, T. Rosso, M. Rota1, F. Levi, C. La Vecchia & E. Negri: European cancer mortality predictions for the year 2015: does lung cancer have the highest death rate in EU women? Annals of Oncology 2015, DOI: 10.1093/annonc/mdv001 

With more than 3,000 employees, the German Cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ) is Germany’s largest biomedical research institute. DKFZ scientists identify cancer risk factors, investigate how cancer progresses and develop new cancer prevention strategies. They are also developing new methods to diagnose tumors more precisely and treat cancer patients more successfully. The DKFZ's Cancer Information Service (KID) provides patients, interested citizens and experts with individual answers to questions relating to cancer.

To transfer promising approaches from cancer research to the clinic and thus improve the prognosis of cancer patients, the DKFZ cooperates with excellent research institutions and university hospitals throughout Germany:

  • National Center for Tumor Diseases (NCT, 6 sites)
  • German Cancer Consortium (DKTK, 8 sites)
  • Hopp Children's Cancer Center (KiTZ) Heidelberg
  • Helmholtz Institute for Translational Oncology (HI-TRON Mainz) - A Helmholtz Institute of the DKFZ
  • DKFZ-Hector Cancer Institute at the University Medical Center Mannheim
  • National Cancer Prevention Center (jointly with German Cancer Aid)
The DKFZ is 90 percent financed by the Federal Ministry of Education and Research and 10 percent by the state of Baden-Württemberg. The DKFZ is a member of the Helmholtz Association of German Research Centers.

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