Cigarette smoking prior to first cancer and risk of second smoking-associated cancers among survivors of bladder, kidney, head and neck, and stage I lung cancers.
OBJECTIVE
Data on smoking and second cancer risk among cancer survivors are limited. We assessed associations between smoking before first cancer diagnosis and risk of second primary smoking-associated cancers among survivors of lung (stage I), bladder, kidney, and head/neck cancers.


METHODS
Data were pooled from 2,552 patients with stage I lung cancer, 6,386 with bladder cancer, 3,179 with kidney cancer, and 2,967 with head/neck cancer from five cohort studies. We assessed the association between prediagnostic smoking and second smoking-associated cancer risk with proportional hazards regression, and compared these estimates to those for first smoking-associated cancers in all cohort participants.


RESULTS
Compared with never smoking, current smoking of ≥ 20 cigarettes per day was associated with increased second smoking-associated cancer risk among survivors of stage I lung (hazard ratio [HR] = 3.26; 95% CI, 0.92 to 11.6), bladder (HR = 3.67; 95% CI, 2.25 to 5.99), head/neck (HR = 4.45; 95% CI, 2.56 to 7.73), and kidney cancers (HR = 5.33; 95% CI, 2.55 to 11.1). These estimates were similar to those for first smoking-associated cancer among all cohort participants (HR = 5.41; 95% CI, 5.23 to 5.61). The 5-year cumulative incidence of second smoking-associated cancers ranged from 3% to 8% in this group of cancer survivors.


CONCLUSIONS
Understanding risk factors for second cancers among cancer survivors is crucial. Our data indicate that cigarette smoking before first cancer diagnosis increases second cancer risk among cancer survivors, and elevated cancer risk in these survivors is likely due to increased smoking prevalence. The high 5-year cumulative risks of smoking-associated cancers among current smoking survivors of stage I lung, bladder, kidney, and head/neck cancers highlight the importance of smoking cessation in patients with cancer.
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC. shielsms@mail.nih.gov.
Meredith S
MS
Shiels
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Todd
T
Gibson
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Joshua
J
Sampson
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Demetrius
D
Albanes
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Gabriella
G
Andreotti
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Laura
L
Beane Freeman
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Amy
A
Berrington de Gonzalez
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Neil
N
Caporaso
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Rochelle E
RE
Curtis
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Joanne
J
Elena
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Neal D
ND
Freedman
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Kim
K
Robien
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Amanda
A
Black
Meredith S. Shiels, Todd Gibson, Joshua Sampson, Demetrius Albanes, Gabriella Andreotti, Laura Beane Freeman, Amy Berrington de Gonzalez, Neil Caporaso, Rochelle E. Curtis, Joanne Elena, Neal D. Freedman, Amanda Black, and Lindsay M. Morton, National Cancer Institute, Rockville, MD; Todd Gibson, St Jude's Children's Research Hospital, Memphis, TN; and Kim Robien, Milken Institute School of Public Health, George Washington University, Washington, DC.
Lindsay M
LM
Morton
D000368:Aged; D015331:Cohort Studies; D005260:Female; D006258:Head and Neck Neoplasms / Q000150:complications* / Q000453:epidemiology; D006801:Humans; D007680:Kidney Neoplasms / Q000150:complications* / Q000453:epidemiology; D008175:Lung Neoplasms / Q000150:complications* / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000453:epidemiology; D016016:Proportional Hazards Models; D012042:Registries; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*; D016540:Smoking Cessation; D017741:Survivors; D001749:Urinary Bladder Neoplasms / Q000150:complications* / Q000453:epidemiology