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Familial renal cell carcinoma (RCC) is genetically heterogeneous and may be associated with germline mutations in a number of genes. Twelve different constitutional translocations involving chromosome 3 have also been described in association with inherited RCC. In some families the lifetime risk of RCC in chromosome 3 translocation carriers has been estimated to be more than 80%; however the cancer risks in patients with chromosome 3 translocations not ascertained because of a family history of RCC are not well defined. We report a retrospective population-based study using Danish national cytogenetic and cancer registries to clarify tumor risks associated with constitutional translocations involving chromosome 3. We identified 222 (105 females, 117 males) individuals with a constitutional chromosome 3 translocation and compared their cancer risks to those of the Danish population. None of the chromosome 3 translocation carriers had developed RCC at the time of study (female 95% Cls 0.000-0.042, male 95% Cls 0.000-0.038) (P = 1.0 and P = 0.498 for females and males compared to Danish population). Fourteen translocation carriers had developed cancer but there was no evidence of an excess of early onset disease and lifetime cancer risks in chromosome 3 translocation carriers were similar that in the Danish population. There was no association between cancer risk and location of the chromosome 3 breakpoint (HR = 1.322, P = 0.673). These findings suggest that, in the absence of a family history of RCC or evidence of disruption of a specific tumor suppressor gene, chromosome 3 translocations carriers are not at high risk of developing RCC. (C) 2009 Wiley-Liss, Inc.
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- 1 Finished
1/03/07 → 30/11/13