Abstract
With the improvement of treatments, a growing number of survivors with childhood or adolescent central nervous system (CNS) tumor are parenting their own children. We aimed to explore the risk of somatic diseases among children of these survivors compared with population controls. Children of survivors with CNS tumor below age of 20 were identified between 1973 and 2014 by combining the several Swedish registers. Five children without parental CNS tumor were matched randomly to generate the population comparisons. Relative risk (RR) and absolute excess risk (AER) were calculated for overall somatic diseases, and hazard ratio (HR) was calculated for specific type of somatic diseases. A total of 2231 somatic disease diagnoses were identified in children of survivors with a cumulative incidence rate of 94.77 per 1000 person‐years, whereas the rate was 92.79 in matched comparisons thus resulting in an overall RR of 1.02 (95% CI=0.98‐1.07) and AER of 1.98 (95%CI=‐2.06, 6.13). Spe cifically, five of 1364 children of survivors had CNS tumor with an incidence rate of 0.21 per 1000 person‐year, whereas the rate was 0.04 in children of matched children, generating a HR of 4.91 (95%CI=1.42‐16.96). Children of male survivors were at a statistically increased risk of malignancy, as well as infectious and parasitic diseases. In conclusion, no significantly higher risk of overall somatic diseases was found in children of survivors with CNS tumor before the age of 20, but children with a paternal diagnosis of CNS tumor had significantly increased risk of malignancies and infectious and parasitic diseases.
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