Background Therapy related myeloid neoplasms (t-MNs) are complex diseases originating from an interplay between exogenous toxicities and a susceptible organism. It has been hypothesised that in a subset of cases t-MNs develop in the context of hereditary cancer predisposition syndromes. Methods The study systematically evaluated pedigrees of patients with t-MNs for cancer incidences and the possibility of a hereditary cancer predisposition syndrome. In addition, mutational analyses were performed using constitutional DNA from index patients, and deleterious heterozygous germline mutations were assessed for loss of heterozygosity in sorted leukaemic cells by single nucleotide polymorphism array. Results A nuclear pedigree was obtained in 51/53 patients with t-MNs resulting in a total of 828 individuals analysed. With a standardised incidence ratio of 1.03 (95% CI 0.74 to 1.39), the tumour incidence of firstdegree relatives was not increased. However, six pedigrees were suggestive for a hereditary breast and ovarian cancer
We conclude that host factors according to revised EORTC/MSG criteria were significantly associated with the development of IFI/IMI in our patients. Previous allogeneic SCT was not a predisposing host factor for the development of IMI. Concerning prolonged corticosteroid treatment, a cut-off of 14 days seems preferable to the proposed cut-off.
The proactive anticipative strategy using microscopic examination of CVC blood samples to anticipate CRBSI in an earlier stage compared with routine measures is a new diagnostic approach in patients with CVCs and a high risk of developing CRBSI.
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