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Sökning: WFRF:(Pilarski L) > (2015-2019)

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1.
  • Couch, Fergus J., et al. (författare)
  • Identification of four novel susceptibility loci for oestrogen receptor negative breast cancer
  • 2016
  • Ingår i: Nature Communications. - : NATURE PUBLISHING GROUP. - 2041-1723. ; 7:11375, s. 1-13
  • Tidskriftsartikel (refereegranskat)abstract
    • Common variants in 94 loci have been associated with breast cancer including 15 loci with genome-wide significant associations (P<5 x 10(-8)) with oestrogen receptor (ER)-negative breast cancer and BRCA1-associated breast cancer risk. In this study, to identify new ER-negative susceptibility loci, we performed a meta-analysis of 11 genome-wide association studies (GWAS) consisting of 4,939 ER-negative cases and 14,352 controls, combined with 7,333 ER-negative cases and 42,468 controls and 15,252 BRCA1 mutation carriers genotyped on the iCOGS array. We identify four previously unidentified loci including two loci at 13q22 near KLF5, a 2p23.2 locus near WDR43 and a 2q33 locus near PPIL3 that display genome-wide significant associations with ER-negative breast cancer. In addition, 19 known breast cancer risk loci have genome-wide significant associations and 40 had moderate associations (P<0.05) with ER-negative disease. Using functional and eQTL studies we implicate TRMT61B and WDR43 at 2p23.2 and PPIL3 at 2q33 in ER-negative breast cancer aetiology. All ER-negative loci combined account for similar to 11% of familial relative risk for ER-negative disease and may contribute to improved ER-negative and BRCA1 breast cancer risk prediction.
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  • Sollert, Carina (författare)
  • New Arylation Strategies Based on Organomain Group Reactivity
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The work in this thesis describes the development of new heteroarylation methodology based on transition metal-catalysed C-H functionalisation and the properties of organomain group compounds. The underlying reaction mechanisms and reactivity patterns of the (hetero)arene substrates are also investigated. The selective C2-H arylation indoles, which are key pharmaceutically-relevant units, was achieved using N-pyrimidyl directing groups, RuII catalysis and arylboronic acids as the coupling reagents (paper I). The use of this set of conditions enabled a remarkable functional group tolerance, highlighted by the preservation of halide substituents on both coupling partners. Mechanistic experiments suggest that cleavage of the C2-H bond occurs through an electrophilic aromatic substitution type pathway. The dehydrogenative C2-H silylation of unprotected gramine and tryptamine alkaloids and other related heteroarenes using hydrosilanes under Ru0 catalysis is described in paper II. The protocol does not require protecting groups and undirected C2-H silylation of heteroarenes is possible at higher temperatures. Significantly, H/D-exchange studies revealed deuterium incorporation at the C4 and C7 positions of the indole unit, apart from C2-H silylation. This study represents the first account of C4-H activation using an electron-rich metal catalyst. Paper III describes an unexpected and profound influence of boronate substituents on the regioselectivity of aryne trapping reactions. The boronates may be introduced easily to the backbone of established fluoride-activated precursors via Ir-catalysed C-H functionalisation. Optimisation and mechanistic studies on the unprecedented level of regioselectivity control these substituents permit using external additives is presented.
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  • Resultat 1-4 av 4

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