Abstract
Backgrounds
Multidisciplinary therapy has increased the risk of subsequent late effects, but detailed analyses on secondary cancers in childhood cancer survivors (CCSs) are limited in Asian countries.
Methods
This was a retrospective cohort study comprising 10,069 CCSs who were diagnosed between 1980 and 2009 across 15 Japanese hospitals. We conducted secondary analyses to estimate the incidence of secondary cancer according to each primary malignancy and to elucidate the association between primary and secondary cancers. We also explored the risk factors for the development of secondary cancer in each independent primary malignancy.
Results
The cumulative incidence of secondary cancer at 20 years varied among primary cancers: hematological malignancy, 3.1% (95% CI 2.2–4.3); retinoblastoma, 6.6% (95% CI 1.5–16.8); pediatric solid tumor, 2.5% (95% CI 1.3–4.2); brain tumors, 5.2% (95% CI 1.7–11.8) bone/soft tissue sarcoma, 5.2% (95% CI 2.3–10.1); and others, 3.3% (95% CI 1.6–6.0) (p = 0.015). The cumulative incidence of secondary cancers is highest in those with osteosarcoma (13.1%) followed by those with hepatoblastoma (8.4%) and retinoblastoma (6.6%). Close association between the primary and secondary cancer diagnoses was found. The risk factors for secondary cancer development depended on the primary cancer, but autologous/allogeneic stem cell transplantation was a relatively common risk factor.
Conclusion
The cumulative incidence of secondary cancer varied among primary cancers. The primary cancer was closely associated with the secondary cancer but stem cell transplantation was a common risk factor for secondary cancers among CCSs.
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Abbreviations
- CCS:
-
Childhood cancer survivor
- CCSS:
-
Childhood Cancer Survivor Study
- BCCSS:
-
British Childhood Cancer Survivor Study
- ALL:
-
Acute lymphoblastic leukemia
- AML:
-
Acute myeloid leukemia
- MDS:
-
Myelodysplastic syndrome
- SCT:
-
Stem cell transplantation
- HR:
-
Hazard ratio
- SD:
-
Standard deviation
- CI:
-
Confidence interval
- PNET:
-
Primitive neuroectodermal tumor
- MPNST:
-
Malignant peripheral nerve sheath tumor
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Acknowledgements
The authors thank the medical staffs of the following participating hospitals: (1) Pediatrics, Tohoku University School of Medicine, Sendai, Japan. (2) Pediatrics, St. Luke’s International Hospital, Tokyo, Japan. (3) Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan. (4) Children’s Cancer Center, National Center for Child Health and Development, Tokyo, Japan. (5) Hematology and Oncology, Shizuoka Children’s Hospital, Shizuoka, Japan. (6) Pediatrics, Niigata Cancer Center, Niigata, Japan. (7) Pediatrics, Mie University Graduate School of Medicine, Mie, Japan. (8) Hematology/Oncology, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan. (9) Pediatrics, Hiroshima University Hospital, Hiroshima, Japan. (10) Pediatrics, National Kyushu Cancer Center, Fukuoka, Japan. (11) Pediatrics, Kurume University School of Medicine, Kurume, Japan. (12) Pediatrics, Nippon Medical School, Tokyo, Japan. (13) Hematology, Kanagawa Children’s Medical Center, Yokohama, Japan. (14) Pediatrics, Sapporo Hokuyu Hospital, Sapporo, Japan. (15) Pediatrics, Kyoto University School of Medicine, Kyoto, Japan.
Funding
This work was supported by a research grant‘ Research on the construction of a long-term follow-up center to know childhood cancer incidence and to evaluate the late effects and secondary cancers after childhood cancers’ (PI; Tatsuo Kuroda) from the Japanese Ministry of Health, Labor and Welfare and a AMED research grant ‘Establishment of standardized treatment for childhood myeloid leukemia’ (PI; Souichi Adachi) from the Japanese Ministry of Health, Labour and Welfare (Grant no. 17ck0106329h0001).
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Contributions
Conception and design: YI, MM, JF, RK, SY and TK, Financial support: TK, SA and YI. Administrative support: YI and TK, Provision of study patients: YI, MM, SA, HI, HK, HH, AO, KK, CK, HS, TR, RK, MS, JO, HG, AM. Collection and assembly of data: YI and DQ. Data analysis and interpretation: YI. Manuscript writing: YI.
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Supplemental Fig. 1
. Cumulative incidence of secondary cancers in neuroblastoma. Cumulative incidence of secondary cancers as a function of time after the primary cancer diagnosis over a maximum follow-up of 30 years as analyzed using the Gray method: (A) age groups at primary cancer diagnosis, (B) sex, (C) chemotherapy, (D) radiotherapy, (E) surgery, and (F) autologous stem cell transplantation (SCT). (TIF 194 KB)
Supplemental Fig. 2
Cumulative incidence of secondary cancers in those with primary cancer of rhabdomyosarcoma and other soft tissue sarcoma. Cumulative incidence of secondary cancers as a function of time after the primary cancer diagnosis over a maximum follow-up of 30 years as analyzed using the Gray method: (A) age groups at primary cancer diagnosis, (B) sex, (C) chemotherapy, (D) radiotherapy, (E) surgery, and (F) autologous stem cell transplantation (SCT). (TIF 204 KB)
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Ishida, Y., Maeda, M., Adachi, S. et al. Secondary cancer after a childhood cancer diagnosis: viewpoints considering primary cancer. Int J Clin Oncol 23, 1178–1188 (2018). https://doi.org/10.1007/s10147-018-1303-6
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DOI: https://doi.org/10.1007/s10147-018-1303-6