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Risk of subsequent primary leukaemias among 69,460 five-year survivors of childhood cancer diagnosed from 1940 to 2008 in Europe: A cohort study within PanCareSurFup

Lookup NU author(s): Professor Roderick Skinner

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Abstract

© 2019 Elsevier Ltd. Background: Survivors of childhood cancers are at risk of developing subsequent primary leukaemias (SPLs), but the long-term risks beyond 20 years of treatment are still unclear. We investigated the risk of SPLs in five-year childhood cancer survivors using a large-scale pan-European (PanCareSurFup) cohort and evaluated variations in the risk by cancer and demographic factors. Methods: This largest-ever assembled cohort comprises 69,460 five-year childhood cancer survivors from 12 European countries. Standardised incidence ratios (SIRs) and absolute excess risks (AERs) were calculated. Results: One hundred fifteen survivors developed an SPL including 86 myeloid leukaemias (subsequent primary myeloid leukaemias [SPMLs]), 17 lymphoid leukaemias and 12 other types of leukaemias; of these SPLs, 31 (27%) occurred beyond 20 years from the first childhood cancer diagnosis. Compared with the general population, childhood cancer survivors had a fourfold increased risk (SIR = 3.7, 95% confidence interval [CI]: 3.1 to 4.5) of developing leukaemia, and eight leukaemias per 100,000 person-years (AER = 7.5, 95% CI: 6.0 to 9.2) occurred in excess of that expected. The risks remained significantly elevated beyond 20 years from the first primary malignancy (SIR = 2.4, 95% CI: 1.6 to 3.4). Overall, the risk ratio for SPML (SIR = 5.8, 95% CI: 4.6 to 7.1) was higher than that for other SPLs. Conclusions: We demonstrate that beyond 20 years after childhood cancer diagnosis, survivors experience an increased risk for SPLs compared with that expected from the general population. Our findings highlight the need for awareness by survivors and their healthcare providers for potential risk related to SPL.

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Author(s): Allodji RS, Hawkins MM, Bright CJ, Fidler-Benaoudia MM, Winter DL, Alessi D, Fresneau B, Journy N, Morsellino V, Bardi E, Bautz A, Byrne J, Feijen ELA, Teepen JC, Vu-Bezin G, Rubino C, Garwicz S, Grabow D, Gudmundsdottir T, Guha J, Hau E-M, Jankovic M, Kaatsch P, Kaiser M, Linge H, Muraca M, Llanas D, Veres C, Ofstaas H, Diallo I, Mansouri I, Ronckers CM, Skinner R, Terenziani M, Wesenberg F, Wiebe T, Sacerdote C, Jakab Z, Haupt R, Lahteenmaki P, Zaletel LZ, Kuehni CE, Winther JF, Michel G, Kremer LCM, Hjorth L, Haddy N, de Vathaire F, Reulen RC

Publication type: Article

Publication status: Published

Journal: European Journal of Cancer

Year: 2019

Volume: 117

Pages: 71-83

Print publication date: 01/08/2019

Online publication date: 28/06/2019

Acceptance date: 09/05/2019

ISSN (print): 0959-8049

ISSN (electronic): 1879-0852

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/j.ejca.2019.05.013

DOI: 10.1016/j.ejca.2019.05.013

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