1. The prognostic and predictive value of human gastrointestinal microbiome and exosomal mRNA expression of PD-L1 and IFNγ for immune checkpoint inhibitors response in metastatic melanoma patients : protocol trialAna Erman, Marija Ignjatović, Katja Leskovšek, Simona Miceska, Urša Lampreht Tratar, Maša Omerzel, Veronika Kloboves-Prevodnik, Maja Čemažar, Lidija Kandolf Sekulović, Gorazd Avguštin, Janja Ocvirk, Tanja Mesti, 2023, original scientific article Abstract: Background: Immunotherapy has been successful in treating advanced melanoma, but a large proportion of patients do not respond to the treatment with immune checkpoint inhibitors (ICIs). Preclinical and small cohort studies suggest gastrointestinal microbiome composition and exosomal mRNA expression of PD-L1 and IFNγ from the primary tumor, stool and body fluids as potential biomarkers for response. Methods: Patients treated with immune checkpoint inhibitors as a first line treatment for metastatic melanoma are recruted to this prospective study. Stool samples are submitted before the start of treatment, at the 12th (+/−2) week and 28th (+/−2) week, and at the occurrence of event (suspected disease progression/hyperprogression, immune-related adverse event (irAE), deterioration). Peripheral venous blood samples are taken additionally at the same time points for cytologic and molecular tests. Histological material from the tumor tissue is obtained before the start of immunotherapy treatment. Primary objectives are to determine whether the human gastrointestinal microbiome (bacterial and viral) and the exosomal mRNA expression of PD-L1 and IFNγ and its dynamics predicts the response to treatment with PD-1 and CTLA-4 inhibitors and its association with the occurrence of irAE. The response is evaluated radiologically with imaging methods in accordance with the irRECIST criteria. Conclusions: This is the first study to combine and investigate multiple potential predictive and prognostic biomarkers and their dynamics in first line ICI in metastatic melanoma patients.
Keywords: gastrointestinal microbiome, mRNA expression of PD-L1 and IFNγ, immune checkpoint inhibitors, metastatic melanoma
Published in DiRROS: 21.03.2024; Views: 383; Downloads: 207
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2. Sistemsko zdravljenje napredovalega melanoma : imunoterapijaAna Erman, Janja Ocvirk, 2023, published scientific conference contribution Abstract: Imunoterapija predstavlja skupaj s tarčnimi zdravili steber prve linije zdravljenja napredovalega melanoma. Stranski sopojavi ob imunoterapiji so pogosti. Pojav imunsko povzročenega pnevmonitisa velikokrat zahteva dolgotrajno zdravljenje s kortikosteroidi in prehodno ali trajno prekinitev zdravljenja z imunoterapijo. Predstavljamo klinični primer zdravljenja napredovalega melanoma z imunoterapijo z zaviralci imunskih kontrolnih točk, ob katerem je prišlo do imunsko povzročenega pnevmonitisa in možnosti reindukcije imunoterapije.
Keywords: rak kože, melanom, imunoterapija
Published in DiRROS: 17.05.2023; Views: 692; Downloads: 271
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4. Rak debelega črevesa in danke pri mladih : klinični primerAna Erman, Neva Volk, 2022, published scientific conference contribution Abstract: Incidenca in umrljivost pri raku debelega črevesa in danke pri mladih v zadnjih desetletjih naraščata. Vsak deseti z diagnozo raka debelega črevesa in danke je mlajši od 50 let. Spremenjene prehranske navade in življenski slog sta glede na zadnje študije pomembna dejavnika tveganja predvsem zaradi vpliva na gastroinestinalni mikrobiom, ki se posredno preko številnih interakcij vpleta v posameznikov imunski odgovor. Delež rakov, ki so odkriti v napredovalem stadiju III ali IV je pri mlajših od 50 let višji. V nadaljevanju predstavljamo dva klinična primera s poudarkom na času od pojava simptomatike do postavitve diagnoze raka debelega črevesa in danke.
Keywords: rak debelega črevesa in danke, sistemsko zdravljenje, rak prebavil
Published in DiRROS: 12.01.2023; Views: 892; Downloads: 189
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