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Oral treatment with etoposide in small cell lung cancer - dilemmas and solution
Renata Režonja, Lea Knez, Tanja Čufer, Aleš Mrhar, 2013, pregledni znanstveni članek

Povzetek: Background. Etoposide is a chemotherapeutic agent, widely used for the treatment of various malignancies, including small cell lung cancer (SCLC), an aggressive disease with poor prognosis. Oral etoposide administration exhibits advantages for the quality of life of the patient as well as economic benefits. However, widespread use of oral etoposide is limited by incomplete and variable bioavailability. Variability in bioavailability was observed both within and between patients. This suggests that some patients may experience suboptimal tumor cytotoxicity, whereas other patients may be atrisk for excess toxicity. Conclusions. The article highlights dilemmas as well as solutions regarding oral treatment with etoposide by presenting and analyzing relevant literature data. Numerous studies have shown that bioavailability of etoposide is influenced by genetic, physiological and environmental factors. Several strategies were explored to improve bioavailability and to reduce pharmacokinetic variability of oral etoposide, including desired and undesired drug interactions (e.g. with ketoconazole), development of suitable drug delivery systems, use of more water-soluble prodrug of etoposide, and influence on gastric emptying. In addition to genotype-based dose administration, etoposide is suitable for pharmacokinetically guided dosing, which enables dose adjustments in individual patient. Further, it is established that oral and intravenous schedules of etoposide in SCLC patients do not result in significant differences in treatment outcome, while results of toxicity are inconclusive. To conclude, the main message of the article is that better prediction of the pharmacokinetics of oral etoposide may encourage its wider use in routine clinical practice.
Ključne besede: oral etoposide, bioavailability, pharmacokinetic variability, small cell lung cancer, treatment
Objavljeno v DiRROS: 22.03.2024; Ogledov: 117; Prenosov: 38
.pdf Celotno besedilo (465,72 KB)

Outcome of small cell lung cancer (SCLC) patients with brain metastases in a routine clinical setting
Mirko Lekić, Viljem Kovač, Nadja Triller, Lea Knez, Aleksander Sadikov, Tanja Čufer, 2012, izvirni znanstveni članek

Povzetek: Background. Small cell lung cancer (SCLC) represents approximately 13 tomediansurvival of SCLC patients treated by specific therapy (chemotherapy andžor radiotherapy) with regard to the 18%months in patients treated with standard chemotherapy and radiotherapy. Inpresence or absence of brain metastases at the time of diagnosis. Patients and methods. All SCLC patients have been treated in a routine clinical practice and followed up at theUniversity Clinic Golnik in Slovenia. In the retrospective study the medical files from 2002 to 2007 were review. All patients with cytological or histological confirmed disease and eligible for specific oncological treatment were included in the study. They have been treated according to the guidelines valid at the time. Chemotherapy and regular followed-up were carried out at the University Clinic Golnik and radiotherapy at the Institute of Oncology Ljubljana. Results. We found 251 patients eligible for the study. The median age of them was 65 years, majoritywere male (67%), smokers or ex-smokers (98%), with performance status 0 to 1 (83%). At the time of diagnosis no metastases were found in 64 patients(25.5%) and metastases outside the brain were presented in 153 (61.0%). Brain metastases, confirmedby a CT scan, were present in 34 patients (13.5%), most of them had also metastases at other localisations. (Abstract truncated at 2000 characters)
Ključne besede: pljuča, rak (medicina), drobnocelični rak, metastaze, možgani
Objavljeno v DiRROS: 22.03.2024; Ogledov: 114; Prenosov: 41
.pdf Celotno besedilo (552,38 KB)

Evaluation of clinical interventions made by pharmacists in chemotherapy preparation
Lea Knez, Raisa Laaksonen, Catherine Duggan, 2010, izvirni znanstveni članek

Povzetek: Background. Cancer drugs are high risk drugs and medication errors in their prescribing, preparation and administration have serious consequences, including death. The importance of a multidisciplinary approach and the benefits of pharmacistsć contribution to cancer treatment to minimise risk have been established. However, the impact of services provided by pharmaciststo cancer patient care is poorly studied. This study explored the clinical interventions made by pharmacists in dispensing of chemotherapy doses, and evaluated pharmacistsć contribution to patient care. Methods. Pharmacists at the Chemotherapy Preparation Unit at a tertiary cancer centre in London were shadowed by two research pharmacists during the clinical screening of chemotherapy prescriptions and release of prepared drugs. An expert panel of pharmacy staff rated the clinical significance of the recordedinterventions. Results. Twenty-one pharmacistsć interventions were recorded during the screening or releasing of 130 prescriptions or drugs. ĆDrug and therapyĆ (38%), ĆclericalĆ (22%) and Ćdose, frequency and durationĆ (19%) related problems most often required an intervention, identifying areas in chemotherapy prescribing that need improvement. The proposed recommendations were implemented in 86% of the cases. Many recorded interventions (48%) were ranked to have had a Ćvery significantĆ influence on patient care. Conclusion. Clinical interventions made by pharmacists had a significant impact on patient care. The integration of pharmacistsć technical and clinical roles into dispensing of chemotherapy doses is required for providing high-quality cancer services.
Objavljeno v DiRROS: 18.03.2024; Ogledov: 130; Prenosov: 33
.pdf Celotno besedilo (452,60 KB)

Immunotherapy for metastatic non-small cell lung cancer : real-world data from an academic Central and Eastern European center
Marija Ivanović, Lea Knez, Ana Herzog, Mile Kovačević, Tanja Čufer, 2021, izvirni znanstveni članek

Povzetek: Background. Immunotherapy with immune checkpoint inhibitors (ICIs) recently became the standard treatment for patients with advanced non-small cell lung cancer (NSCLC). Here, we present the first results of a real-world observational study on the effectiveness of ICI monotherapy in patients with advanced NSCLC treated at a single academic center in a Central and Eastern European (CEE) country. Materials and methods. Overall, 66 consecutive patients with advanced NSCLC treated with ICIs in everyday clinical practice, either with first-line pembrolizumab (26 patients) or second-line atezolizumab, nivolumab, or pembrolizumab (40 patients), from August 2015 to November 2018, were included. All data were retrieved from a hospital lung cancer registry, in which the data is collected prospectively. Results. Included patients had a median age of 64 years, most were male (55%), 6% were in performance status >/=2, and 18% had controlled central nervous system metastases at baseline. In first-line, the median progression-free survival (mPFS) was 9.3 months, while the median overall survival (mOS) was not reached. The 1-year overall survival (OS) was 62%. In second-line, the mPFS and mOS were 3.5 months and 9.9 months, respectively, with a 1-year OS of 35%. In the overall population, adverse events of any grade were recorded in 79% of patients and of severe grade (3-4) in 12% of patients. Conclusion. The first real-world outcomes of NSCLC immunotherapy from a CEE country suggest comparable effectiveness to those observed in clinical trials and other real-world series, mainly coming from North America and Western European countries. Further data to inform on the real-world effectiveness of immunotherapy worldwide are needed.
Ključne besede: non-small cell lung carcinoma, immunotherapy, advanced non-small cell lung cancer, real-world data, Central Europe, Europe, Eastern Europe
Objavljeno v DiRROS: 12.10.2021; Ogledov: 977; Prenosov: 300
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Tarčna terapija in imunoterapija pljučnega raka
Tanja Čufer, Lea Knez, 2015, objavljeni strokovni prispevek na konferenci (vabljeno predavanje)

Ključne besede: pljučni rak, tarčna terapija, imunoterapija
Objavljeno v DiRROS: 08.05.2020; Ogledov: 1538; Prenosov: 416
.pdf Celotno besedilo (279,29 KB)

Interakcije tarčnih zdravil z drugimi zdravili, hrano in prehranskimi dopolnili
Lea Knez, 2015, objavljeni strokovni prispevek na konferenci

Ključne besede: tarčna zdravila, interakcija med zdravili, inhibitorji, induktorji, onkologija
Objavljeno v DiRROS: 22.01.2020; Ogledov: 1805; Prenosov: 498
.pdf Celotno besedilo (665,24 KB)

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