Publications by authors named "Heidi Koskela"

Objectives: We evaluated usability of single base substitution signature 3 (Sig3) as a biomarker for homologous recombination deficiency (HRD) in tubo-ovarian high-grade serous carcinoma (HGSC).

Materials And Methods: This prospective observational trial includes 165 patients with advanced HGSC. Fresh tissue samples (n = 456) from multiple intra-abdominal areas at diagnosis and after neoadjuvant chemotherapy (NACT) were collected for whole-genome sequencing.

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Purpose: Deficiency in homologous recombination (HR) repair of DNA damage is characteristic of many high-grade serous ovarian cancers (HGSC). It is imperative to identify patients with homologous recombination-deficient (HRD) tumors as they are most likely to benefit from platinum-based chemotherapy and PARP inhibitors (PARPi). Existing methods measure historical, not necessarily current HRD and/or require high tumor cell content, which is not achievable for many patients.

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This retrospective study included 92 consecutive patients with locally advanced or metastatic pancreatic cancer treated in the Turku University Hospital in 2010. The diagnosis of pancreatic cancer was verified by either histological samples (adenocarcinoma) or by imaging or both, excluding other known histological types of tumours. Median patient survival was 11 months.

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