TY - JOUR
T1 - Long-term Cause-Specific Mortality Among Survivors of Childhood Cancer
AU - Reulen, Raoul
AU - Winter, David
AU - Frobisher, Clare
AU - Lancashire, Emma
AU - Stiller, CA
AU - Jenney, ME
AU - Skinner, R
AU - Stevens, MC
AU - Hawkins, Michael
PY - 2010/7/1
Y1 - 2010/7/1
N2 - Context Survivors of childhood cancer are at increased risk of premature mortality compared with the general population, but little is known about the long-term risks of specific causes of death, particularly beyond 25 years from diagnosis at ages when background mortality in the general population starts to increase substantially.
Objective To investigate long-term cause-specific mortality among 5-year survivors of childhood cancer in a large-scale population-based cohort.
Design, Setting, and Patients British Childhood Cancer Survivor Study, a population-based cohort of 17 981 5-year survivors of childhood cancer diagnosed with cancer before age 15 years between 1940 and 1991 in Britain and followed up until the end of 2006.
Main Outcome Measures Cause-specific standardized mortality ratios (SMRs) and absolute excess risks (AERs).
Results Overall, 3049 deaths were observed, which was 11 times the number expected (SMR, 10.7; 95% confidence interval [CI], 10.3-11.1). The SMR declined with follow-up but was still 3-fold higher than expected (95% CI, 2.5-3.9) 45 years from diagnosis. The AER for deaths from recurrence declined from 97 extra deaths (95% CI, 92-101) per 10 000 person-years at 5 to 14 years from diagnosis, to 8 extra deaths (95% CI, 3-22) beyond 45 years from diagnosis. In contrast, during the same periods of follow-up, the AER for deaths from second primary cancers and circulatory causes increased from 8 extra deaths (95% CI, 7-10) and 2 extra deaths (95% CI, 2-3) to 58 extra deaths (95% CI, 38-90) and 29 extra deaths (95% CI, 16-56), respectively. Beyond 45 years from diagnosis, recurrence accounted for 7% of the excess number of deaths observed while second primary cancers and circulatory deaths together accounted for 77%.
Conclusion Among a cohort of British survivors of childhood cancer, excess mortality from second primary cancers and circulatory diseases continued to occur beyond 25 years from diagnosis. JAMA. 2010; 304(2): 172-179 www.jama.com
AB - Context Survivors of childhood cancer are at increased risk of premature mortality compared with the general population, but little is known about the long-term risks of specific causes of death, particularly beyond 25 years from diagnosis at ages when background mortality in the general population starts to increase substantially.
Objective To investigate long-term cause-specific mortality among 5-year survivors of childhood cancer in a large-scale population-based cohort.
Design, Setting, and Patients British Childhood Cancer Survivor Study, a population-based cohort of 17 981 5-year survivors of childhood cancer diagnosed with cancer before age 15 years between 1940 and 1991 in Britain and followed up until the end of 2006.
Main Outcome Measures Cause-specific standardized mortality ratios (SMRs) and absolute excess risks (AERs).
Results Overall, 3049 deaths were observed, which was 11 times the number expected (SMR, 10.7; 95% confidence interval [CI], 10.3-11.1). The SMR declined with follow-up but was still 3-fold higher than expected (95% CI, 2.5-3.9) 45 years from diagnosis. The AER for deaths from recurrence declined from 97 extra deaths (95% CI, 92-101) per 10 000 person-years at 5 to 14 years from diagnosis, to 8 extra deaths (95% CI, 3-22) beyond 45 years from diagnosis. In contrast, during the same periods of follow-up, the AER for deaths from second primary cancers and circulatory causes increased from 8 extra deaths (95% CI, 7-10) and 2 extra deaths (95% CI, 2-3) to 58 extra deaths (95% CI, 38-90) and 29 extra deaths (95% CI, 16-56), respectively. Beyond 45 years from diagnosis, recurrence accounted for 7% of the excess number of deaths observed while second primary cancers and circulatory deaths together accounted for 77%.
Conclusion Among a cohort of British survivors of childhood cancer, excess mortality from second primary cancers and circulatory diseases continued to occur beyond 25 years from diagnosis. JAMA. 2010; 304(2): 172-179 www.jama.com
U2 - 10.1001/jama.2010.923
DO - 10.1001/jama.2010.923
M3 - Article
C2 - 20628130
SN - 1538-3598
VL - 304
SP - 172
EP - 179
JO - JAMA The Journal of the American Medical Association
JF - JAMA The Journal of the American Medical Association
IS - 2
ER -
