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Importance of updating family cancer history in childhood cancer survivors

Abstract

Estimates of the number of childhood cancers with a genetic basis range from 5–8.5% found in germline samples to 29% based on clinical criteria. Family history-taking practice is a fundamental first step in detecting at risk individuals and families. This study focused on Li-Fraumeni Syndrome (LFS), a highly penetrant cancer syndrome. Reported family history in a cohort of 648 of cancer survivor cohort (CCS) was examined. Eligible CCS were: (i) aged up to 14 years at diagnosis; (ii) more than 5 years postdiagnosis; (iii) treated for a childhood cancer at the study hospitals in NSW, Australia; (iv) in remission for more than 3 years. CCS completed self-administered questionnaires. Medical records confirmed diagnosis and treatment-related information. Our findings reveal an increased cancer risk among sibling and relatives of CCS. 91% of siblings diagnosed with cancer were diagnosed under the age of 40 and about 30% diagnosed under the aged of 15 revealing a 5- (RR = 5.1; 95% CI, 3.3–7.9) and 44-fold (RR = 44.6; 95% CI, 18.4–108.3) increased risked of cancer compared with the Australian population, respectively. About 2% of CCS reported that they had been diagnosed with a genetic cancer syndrome. However, 11% of survivors described a family history pattern which met Chompret criteria for screening for TP53 mutations associated with LFS. Our data suggests that familial cancer predispositions may be initially overlooked. Aperiodic and accurate ascertainment of family cancer history of childhood cancer patients and survivors is therefore recommended.

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Notes

  1. Chompret’s Critera for Li Fraumeni syndrome and germline TP53 mutation screening: (i) proband with tumour belonging to LFS tumour spectrum (e.g., soft tissue sarcoma, osteosarcoma, brain tumour, premenopausal breast cancer, adrenocortical carcinoma, leukaemia, lung bronchoalveolar cancer) before age 46 years AND at least one first- or second-degree relative with LFS tumour (except breast cancer if proband has breast cancer) before age 56 years or with multiple tumors; OR (ii) Proband with multiple tumours (except multiple breast tumours), two of which belong to LFS tumour spectrum and first of which occurred before age 46 years; OR (iii) Patient with adrenocortical carcinoma or choroid plexus tumour, irrespective of family history.

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Acknowledgements

The Behavioural Sciences Unit is proudly supported by the Kids with Cancer Foundation. Claire Wakefield is supported by a Career Development Fellowship from the National Health and Medical Research Council of Australia (APP1067501). This research was supported by the Kids Cancer Alliance. We would like to thank the participating hospitals, Sydney Children Hospital, Children’s Hospital Westmead and John Hunter Hospital for their collaboration and support. A special thanks to the participants and their families.

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Correspondence to Selena Russo.

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Russo, S., Warby, M., Tucker, K.M. et al. Importance of updating family cancer history in childhood cancer survivors. Familial Cancer 16, 605–610 (2017). https://doi.org/10.1007/s10689-017-9988-7

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Keywords

  • Cancer
  • Genetic
  • Cancer family history
  • Oncology
  • Pediatric
  • Cancer syndrome
  • Childhood cancer survivors