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83. PD-L1 expression can be regarded as prognostic factor for survival of non-small cell lung cancer patients after chemoradiotherapyMartina Vrankar, Matjaž Zwitter, Izidor Kern, Karmen Stanič, 2018, izvirni znanstveni članek Povzetek: The standard treatment for inoperable locally advanced non-small cell lung cancer (LA NSCLC) includes concurrent or sequential chemotherapy (ChT) and radiation therapy (RT). Long term survival rates with these approaches remains only in the order of 15%, therefore new treatment strategies, including immunotherapy, are under investigation, with programmed death ligand-1 (PD-L1) as one of the major players. We evaluated the clinical significance of PD-L1 expression in tumor samples from patients with inoperable LA NSCLC who underwent concurrent chemoradiotherapy (CRT) in our institution between 2005 and 2010 and correlated their expression with clinicopathological parameters and outcome of treatment. Among 107 patients treated with concurrent CRT, a total of 43 (36 males and 7 females) had sufficient tissue for immunohistochemical (IHC) staining. The expression of PD-L1 was demonstrated in 7 tumors, in 6 males and 1 female. No statistical significant differences in patient characteristics, including age, smoking status and gender, were found according to the PD-L1 expression. After a median follow up of 103.6 months, median progression free survival (PFS) was 19.9 months in patients without and 10.1 months in patients with PD-L1 expression (p=0.008). Median overall survival (OS) was 28.4 and 12.1 months for PD-L1 negative and PD-L1 positive patients, respectively (p=0.012). In conclusions, patients with PD-L1 expression had shorter PFS and OS after concurrent CRT in LA NSCLC. Unfortunately, only small number of patients had tissue available for the IHC testing, therefore no firm conclusions could be made and further investigation is warranted.
Ključne besede: non-small cell lung cancer, lung cancer, chemoradiotherapy, survival
Objavljeno v DiRROS: 17.12.2020; Ogledov: 1324; Prenosov: 417
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86. Prognostic value of PD-L1 expression in patients with unresectable stage III non-small cell lung cancer treated with chemoradiotherapyMartina Vrankar, Izidor Kern, Karmen Stanič, 2020, izvirni znanstveni članek Povzetek: Background: Expression of PD-L1 is the most investigated predictor of benefit from immune checkpoint blockade in advanced NSCLC but little is known about the association of PD-L1 expression and clinicopathological parameters of patients with unresectable stage III NSCLC. Methods: National registry data was searched for medical records of consecutive inoperable stage III NSCLC patients treated with ChT and RT from January 2012 to December 2017. Totally 249 patients were identified that met inclusion criteria and of those 117 patients had sufficient tissue for PD-L1 immunohistochemical staining. Results: Eighty patients (68.4%) expressed PD-L1 of >- 1% and 29.9% of more than 50%. Median PFS was 15.9 months in PD-L1 negative patients and 16.1 months in patients with PD-L1 expression >- 1% (p = 0.696). Median OS in PD-L1 negative patients was 29.9 months compared to 28.5 months in patients with PD-L1 expression >- (p = 0.888). There was no difference in median OS in patients with high PD-L1 expression (>- 50%) with 29.8 months compared to 29.9 months in those with low (1-49%) or no PD-L1 expression (p = 0.694). We found that patients who received a total dose of 60 Gy or more had significantly better median OS (32 months vs. 17.5 months, p < 0.001) as well as patients with PS 0 (33.2 vs. 20.3 months, p = 0.005). Conclusions: In our patients PD-L1 expression had no prognostic value regarding PFS and OS. Patients with good performance status and those who received a total radiation dose of more than 60 Gy had significantly better mOS.
Ključne besede: non small cell lung cancer, chemoradiotherapy, stage III
Objavljeno v DiRROS: 09.11.2020; Ogledov: 1405; Prenosov: 1006
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87. Dynamic contrast-enhanced MRI of malignant pleural mesothelioma : a comparative study of pharmacokinetic models and correlation with mRECIST criteriaMartina Vivoda Tomšič, Sotirios Bisdas, Viljem Kovač, Igor Serša, Katarina Šurlan Popović, 2019, izvirni znanstveni članek Povzetek: BACKGROUND: Malignant pleural mesothelioma (MPM) is a rare and aggressive thoracic malignancy that is difficult to cure. Dynamic contrast-enhanced (DCE) MRI is a functional imaging technique used to analyze tumor microvascular properties and to monitor therapy response. Purpose of this study was to compare two tracer kinetic models, the extended Tofts (ET) and the adiabatic approximation tissue homogeneity model (AATH) for analysis of DCE-MRI and examine the value of the DCE parameters to predict response to chemotherapy in patients with MPM. METHOD: This prospective, longitudinal, single tertiary radiology center study was conducted between October 2013 and July 2015. Patient underwent DCE-MRI studies at three time points: prior to therapy, during and after cisplatin-based chemotherapy. The images were analyzed using ET and AATH models. In short-term follow-up, the patients were classified as having disease control or progressive disease according to modified response evaluation criteria in solid tumors (mRECIST) criteria. Receiver operating characteristic curve analysis was used to examine specificity and sensitivity of DCE parameters for predicting response to therapy. Comparison tests were used to analyze whether derived parameters are interchangeable between the two models. RESULTS: Nineteen patients form the study population. The results indicate that the derived parameters are not interchangeable between the models. Significant correlation with response to therapy was found for AATH-calculated median pre-treatment efflux rate (kep) showing sensitivity of 83% and specificity of 100% (AUC 0.9). ET-calculated maximal pre-treatment kep showed 100% sensitivity and specificity for predicting treatment response during the early phase of the therapy and reached a favorable trend to significant prognostic value post-therapy. CONCLUSION: Both models show potential in predicting response to therapy in MPM. High pre-treatment kep values suggest MPM disease control post-chemotherapy.
Ključne besede: biomarker, magnetic resonance imaging, mesothelioma, perfusion, response evaluation criteria in solid
tumors, prognosis
Objavljeno v DiRROS: 23.09.2020; Ogledov: 1291; Prenosov: 948
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88. Priporočila za obravnavo bolnikov s pljučnim rakomMartina Vrankar, Nina Boc, Izidor Kern, Aleš Rozman, Karmen Stanič, Tomaž Štupnik, Mojca Unk, Maja Ebert Moltara, Vesna Zadnik, Katja Adamič, Jernej Benedik, Marko Bitenc, Jasna But-Hadžić, Anton Crnjac, Eva Ćirić, Tanja Čufer, Goran Gačevski, Marta Globočnik Kukovica, Kristina Gornik-Kramberger, Maja Ivanetič Pantar, Staša Jelerčič, Veronika Kloboves-Prevodnik, Mile Kovačević, Luka Ležaič, Mateja Marc-Malovrh, Katja Mohorčič, Bogdan Vidmar, Dušanka Vidovič, Gregor Vlačić, Ana Lina Vodušek, Rok Zbačnik, Ivana Žagar, 2020, strokovni članek Ključne besede: pljučni rak, priporočila
Objavljeno v DiRROS: 22.09.2020; Ogledov: 1839; Prenosov: 683
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89. Smernice & klinična pot za obravnavo bolnikov z melanomomPrimož Strojan, Uroš Ahčan, Marko Snoj, Boštjan Luzar, Jože Pižem, Boris Jančar, Martina Reberšek, Borut Žgavec, Tanja Planinšek Ručigaj, Aleksandra Dugovnik, 2010, slovar, enciklopedija, leksikon, priročnik, atlas, zemljevid Ključne besede: klasifikacija, smernice, preživetje
Objavljeno v DiRROS: 28.08.2020; Ogledov: 1619; Prenosov: 685
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90. Kaj je dobro vedeti o RDČDJanja Ocvirk, Zvezdana Hlebanja, Neva Volk, Martina Reberšek, Jernej Benedik, Marko Boc, Maja Ebert Moltara, Tanja Mesti, 2013, slovar, enciklopedija, leksikon, priročnik, atlas, zemljevid Objavljeno v DiRROS: 11.08.2020; Ogledov: 1500; Prenosov: 628
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