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Träfflista för sökning "WFRF:(Bernstein Inge) srt2:(2012)"

Sökning: WFRF:(Bernstein Inge) > (2012)

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1.
  • Klarskov, Louise, et al. (författare)
  • Hereditary colorectal cancer diagnostics: morphological features of familial colorectal cancer type X versus Lynch syndrome
  • 2012
  • Ingår i: Journal of Clinical Pathology. - : BMJ. - 1472-4146 .- 0021-9746. ; 65:4, s. 352-356
  • Tidskriftsartikel (refereegranskat)abstract
    • Background The hereditary non-polyposis colorectal cancer (HNPCC) subset of tumours can broadly be divided into tumours caused by an underlying mismatch-repair gene mutation, referred to as Lynch syndrome, and those that develop in families with similar patterns of heredity but without disease-predisposing germline mismatch repair mutations, referred to as familial colorectal cancer type X (FCCTX). Recognition of HNPCC-associated colorectal cancers is central since surveillance programmes effectively reduce morbidity and mortality. The characteristic morphological features linked to Lynch syndrome can aid in the identification of this subset, whereas the possibility to use morphological features as an indicator of FCCTX is uncertain. Objective and methods To perform a detailed morphological evaluation of HNPCC-associated colorectal cancers and demonstrate significant differences between tumours associated with FCCTX and Lynch syndrome. Results The morphological features associated with Lynch syndrome, that is, right-sided tumour location, poor differentiation, expansive growth pattern, tumour-infiltrating lymphocytes, peritumorous lymphocytes, Crohn-like reactions, and lack of dirty necrosis, were significantly less often observed in FCCTX tumours. Discussion The less typical morphology in FCCTX implies that family history of cancer needs to be taken into account since these tumours cannot readily be recognised based on histopathological features.
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2.
  • Therkildsen, Christina, et al. (författare)
  • Cancer risks and immunohistochemical profiles linked to the Danish MLH1 Lynch syndrome founder mutation
  • 2012
  • Ingår i: Familial Cancer. - : Springer Science and Business Media LLC. - 1389-9600 .- 1573-7292. ; 11:4, s. 579-585
  • Tidskriftsartikel (refereegranskat)abstract
    • Founder mutations with a large impact in distinct populations have been described in Lynch syndrome. In Denmark, the MLH1 c.1667+2_1667_+8TAAATCAdelinsATTT mutation accounts for 25 % of the MLH1 mutant families. We used the national Danish hereditary nonpolyposis colorectal cancer register to estimate the cumulative lifetime risks for Lynch syndrome-associated cancer in 16 founder mutation families with comparison to 47 other MLH1 mutant families. The founder mutation conferred comparable risks for colorectal cancer (relative risks, RR, of 0.99 for males and 0.79 for females) and lower risks for extracolonic cancer (RR of 0.69 for endometrial cancer and 0.39 for all other extracolonic cancers). We also characterized expression of key Wnt-signaling proteins in colorectal cancers with the founder mutation. Aberrant staining affected beta-catenin in 59 %, E-cadherin in 68 %, TCF-4 in 94 % and Cyclin D1 in 68 % with extensive inter-tumor variability despite the same underlying germline mutation. In conclusion, the Danish MLH1 founder mutation that accounts for a significant proportion of Lynch syndrome and is associated with a lower risk for extracolonic cancers.
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