Annals of Oncology Advance Access published online on August 25, 2008
Annals of Oncology, doi:10.1093/annonc/mdn588
Cancer in adolescents and young adults in north Netherlands (1989–2003): increased incidence, stable survival and high incidence of second primary tumours


1 Department of Medical Oncology
2 Department of Paediatric Oncology, University Medical Center Groningen, University of Groningen
3 Comprehensive Cancer Center North Netherlands
4 Department of Haematology, University Medical Center Groningen, University of Groningen, Groningen
5 Department of Medical Oncology, Radboud University Nijmegen, Medical Centre Nijmegen, Nijmegen, The Netherlands
* Correspondence to: Prof. W. T. A. van der Graaf, Department of Medical Oncology, Radboud University Nijmegen, Medical Centre Nijmegen, PO Box 9101, 6500 HB Nijmegen, The Netherlands. Tel: +31-(0)24-3610353; Fax: +31-(0)24-3540788; E-mail: w.vandergraaf{at}onco.umcn.nl
Background: Lack of survival improvement in adolescents and young adults (AYA) with cancer has led to increased awareness of this young population.
Design: We carried out a population-based study of incidence and survival of primary tumours and second primary tumours in patients aged 12–24 in north Netherlands. Age-specific incidence rates per 100 000 and 3-year moving means were calculated. Factors associated with incidence and survival were assessed using a Poisson model, log-rank test and multivariate Cox proportional hazards analysis.
Results: From 1989 to 2003 a total of 1118 patients were diagnosed. The total age-specific incidence rates per 100 000 were as follows: males: 13.4 (12–15 years), 26.9 (16–19 years) and 27.5 (20–24 years) and females: 13.9, 20.7 and 20.7. Male : female ratio was 1.32. The overall estimated annual percentage change (EAPC) in incidence was 2.15% (P < 0.01). Five-year survival was 80.8% and did not improve during the study period. With median follow-up of 5.5 years (range 0.0–16.0) in our cohort the standardized incidence ratio (SIR) of second primary tumours was 30.55 (95% confidence interval = 19.96–44.76, P < 0.05).
Conclusions: The total incidence of cancer in AYA increased (EAPC = 2.15%). Survival was unchanged. The SIR of a second primary tumour in this young cohort increased 31-fold. Further research is needed to study this increasing incidence and optimise treatment outcome in these young patients.
adolescents, cancer, epidemiology, second primary, young adults
Both authors contributed equally. Received for publication January 29, 2008. Revision received July 20, 2008. Accepted for publication July 25, 2008.