1. Association between PIK3CA activating mutations and outcomes in early-stage invasive lobular breast carcinoma treated with adjuvant systemic therapyDomen Ribnikar, Valentina Jerič Horvat, Ivica Ratoša, Zachary Veitch, Biljana Grčar-Kuzmanov, Srdjan Novaković, Erik Langerholc, Eitan Amir, Boštjan Šeruga, 2023, original scientific article Abstract: The aim of the study was to evaluate the independent prognostic role of PIK3CA activating mutationsand an association between PIK3CA activating mutations and efficacy of adjuvant endocrine therapy (ET) in patientswith operable invasive lobular carcinoma (ILC).Patients and methods.A single institution study of patients with early-stage ILC treated between 2003 and 2008 wasperformed. Clinicopathological parameters, systemic therapy exposure and outcomes (distant metastasis-free sur-vival [DMFS] and overall survival [OS]) were collected based on presence or absence of PIK3CA activating mutationin the primary tumor determined using a quantitative polymerase chain reaction (PCR)-based assay. An associationbetween PIK3CA mutation status and prognosis in all patient cohort was analyzed by Kaplan-Meier survival analysis,whereas an association between PIK3CA mutation and ET was analyzed in estrogen receptors (ER) and/or progester-one receptors (PR)-positive group of our patients by the Cox proportional hazards model.Results. Median age at diagnosis of all patients was 62.8 years and median follow-up time was 10.8 years. Among365 patients, PIK3CA activating mutations were identified in 45%. PIK3CA activating mutations were not associatedwith differential DMFS and OS (p = 0.36 and p = 0.42, respectively). In patients with PIK3CA mutation each year oftamoxifen (TAM) or aromatase inhibitor (AI) decreased the risk of death by 27% and 21% in comparison to no ET, re-spectively. The type and duration of ET did not have significant impact on DMFS, however longer duration of ET hada favourable impact on OS.Conclusions. PIK3CA activating mutations are not associated with an impact on DMFS and OS in early-stage ILC.Patients with PIK3CA mutation had a statistically significantly decreased risk of death irrespective of whether theyreceived TAM or an AI.
Keywords: invasive lobular carcinoma, PIK3CA mutation, endocrine therapy
Published in DiRROS: 25.07.2024; Views: 21; Downloads: 4
 Full text (512,26 KB) |
2. Sclerosing melanocytic lesions (sclerosing melanomas with nevoid features and sclerosing nevi with pseudomelanomatous features) : an analysis of 90 lesionsBiljana Grčar-Kuzmanov, Emanuela Boštjančič, Juan Antonio Contreras, Jože Pižem, 2018, original scientific article Abstract: Background. Sclerosing melanocytic lesions, which are characterized by either focal or diffuse sclerosis in the dermal component and atypical proliferation of predominantly nevoid melanocytes, remain poorly defined. Our aim was to analyze systematically their morphologic spectrum, especially the distinction between sclerosing melanocytic nevus and sclerosing melanoma, which has not been well documented. Patients and methods. We collected 90 sclerosing melanocytic lesions, occurring in 82 patients (49 male, 33 female; age range from 21 to 89 years). A four probe fluorescent in situ hybridization (FISH) assay was performed in 41 lesions to substantiate the diagnosis of sclerosing melanomas. Results. A prominent full-thickness pagetoid spread of melanocytes was identified in 44 (48%) lesions, and a melanoma in situ adjacent to the sclerosis in 55 (61%) lesions. In the intrasclerotic component, maturation was absent in 40 (44%) and mitotic figures were identified in 18 (20%) lesions. Of the 90 lesions, 26 (29%) were diagnosed morphologically as nevi and 64 (71%) as melanomas (Breslow thickness from 0.4 to 1.8 mm), including 45 (50%) melanomas with an adjacent nevus. A four-probe FISH assay was positive in the sclerotic component in 14 of 25 lesions diagnosed morphologically as melanomas and none of 16 nevi. A sentinel lymph node biopsy was performed for 17 lesions and was negative in all cases. Conclusions. Sclerosing melanocytic lesions form a morphologic spectrum and include both nevi and melanomas. The pathogenesis of sclerosis remains obscure but seems to be induced by melanocytes or an unusual host response in at least a subset of lesions.
Keywords: sclerosing melanoma, sclerosing nevus, fibrosis
Published in DiRROS: 02.07.2024; Views: 130; Downloads: 48
Full text (1,34 MB) |
3. Randomised trial of HPV self-sampling among non-attenders in the Slovenian cervical screening programme ZORA : comparing three different screening approachesUrška Ivanuš, Tine Jerman, Alenka Repše-Fokter, Iztok Takač, Veronika Kloboves-Prevodnik, Mateja Marčec, Uršula Salobir Gajšek, Maja Pakiž, Jakob Koren, Simona Hutter-Čelik, Kristina Gornik-Kramberger, Ulrika Klopčič, Rajko Kavalar, Simona Šramek Zatler, Biljana Grčar-Kuzmanov, Mojca Florjančič, Nataša Nolde, Srdjan Novaković, Mario Poljak, Maja Primic-Žakelj, 2018, original scientific article Published in DiRROS: 11.06.2024; Views: 148; Downloads: 84
Full text (460,11 KB)
This document has many files! More... |
4. Do double-expressor high-grade B-cell lymphomas really need intensified treatment : a report from the real-life series of high-grade B-cell lymphomas treated with different therapeutic protocols at the Institute of Oncology LjubljanaLučka Boltežar, Samo Rožman, Gorana Gašljević, Biljana Grčar-Kuzmanov, Barbara Jezeršek Novaković, 2024, original scientific article Abstract: High-grade B-cell lymphomas with MYC and BCL2 and/or BCL6 rearrangements are known for their aggressive clinical course and so are the ones with MYC and BCL2 protein overexpression. The optimal therapy for these lymphomas remains to be elucidated. A retrospective analysis of all diffuse large B-cell lymphomas and high-grade B-cell lymphomas with MYC and BCL2 and/or BCL6 rearrangements diagnosed between 2017 and 2021 at the Institute of Oncology Ljubljana, Slovenia, has been performed. Only patients with double-expressor lymphoma (DEL), double-hit lymphoma (DHL), or triple-hit lymphoma (THL) were included. Demographic and clinical parameters were assessed, as well as progression-free survival (PFS) and overall survival (OS). In total, 161 cases out of 309 (161/309; 52,1%) were classified as DEL. Sixteen patients had DHL, MYC/BCL2 rearrangement was observed in eleven patients, and MYC/BCL6 rearrangement was observed in five patients. Five patients were diagnosed with THL. Out of 154 patients (according to inclusion/exclusion criteria) included in further evaluation, one-hundred and thirty-five patients had double-expressor lymphoma (DEL), sixteen patients had DHL, and three patients had THL. In total, 169 patients were treated with R-CHOP, 10 with R-CHOP and intermediate-dose methotrexate, 19 with R-DA-EPOCH, and 16 with other regimens. The median follow-up was 22 months. The 5-year OS for the whole DEL group was 57.1% (95% CI 45.9–68.3%) and the 5-year PFS was 76.5% (95% CI 72.6–80.4%). The log-rank test disclosed no differences in survival between treatment groups (p = 0.712) while the high-risk international prognostic index (IPI) carried a significantly higher risk of death (HR 7.68, 95% CI 2.32–25.49, p = 0.001). The 5-year OS for DHL patients was 32.4% (95% CI 16.6–48.2%) while all three TH patients were deceased or lost to follow-up. Our analyses of real-life data disclose that the R-CHOP protocol with CNS prophylaxis is a successful and curative treatment for a substantial proportion of DEL patients.
Keywords: lymphoma, double-expressor lymphoma, oncology
Published in DiRROS: 18.04.2024; Views: 260; Downloads: 113
Full text (1004,13 KB)
This document has many files! More... |
5. Ali visoko maligni B-celični limfomi, dvojni ekspresorji, res potrebujejo intenzivnejšo kemoterapijoLučka Boltežar, Samo Rožman, Gorana Gašljević, Biljana Grčar-Kuzmanov, Barbara Jezeršek Novaković, 2023, published scientific conference contribution Abstract: Velikocelični B limfomi z BCL2 in BCL6 preureditvijo so imenovani "double-hit" oziroma "triplehit" limfomi, z imunohistokemično ekspresijo pa dvojni ekspresorji (DE) in vsi imajo slabšo prognozo od klasičnih velikoceličnih limfomov B. Opravljena je bila študija vseh bolnikov z visoko malignimi B limfomi in difuznim velikoceličnim limfomom B, zdravljenih na Onkološkem inštitutu Ljubljana med leti 2017 in 2021. Večina izmed 154 vključenih bolnikov je bila zdravljenih z R-CHOP terapijo (rituksimab, ciklofosfamid, doksorubicin, vinkristin in prednizon), mediani čas spremljanja bolnikov je bil 22 mesecev. 110 bolnikov (71,4 %) ni imelo ponovitve bolezni v opazovanem obdobju. V primerjavi štirih uporabljenih terapevtskih protokolov v skupini DE nismo našli razlik v preživetju (p < 0,712). Preživetje bolnikov z "double-hit" in "triple-hit" limfomi je bilo, pričakovano, slabo. Naši podatki kažejo, da je velik del bolnikov z DE, zdravljen z R-CHOP in standardno CŽS profilakso, tudi uspešno ozdravljen. Za potrditev naših izsledkov so potrebne večje randomizirane raziskave.
Keywords: limfomi, kemoterapija, onkološko zdravljenje
Published in DiRROS: 16.06.2023; Views: 518; Downloads: 206
Full text (1,93 MB)
This document has many files! More... |
6. Izraženost ER in PR pri invazivnem karcinomu dojke : rezultati določanja na 15 029 zaporednih vzorcih z Onkološkega Inštituta v obdobju 2006 do 2021Primož Drev, Olga Blatnik, Jerca Blazina, Juan Antonio Contreras, Gorana Gašljević, Biljana Grčar-Kuzmanov, Andreja Klevišar Ivančič, Snežana Pavlović Djokić, Barbara Gazić, 2022, published professional conference contribution abstract Keywords: onkologija, rak dojke, patologija
Published in DiRROS: 14.02.2023; Views: 560; Downloads: 173
Full text (79,90 KB) |
7. Izraženost hormonskih receptorjev pri invazivnem karcinomu dojke : rezultati določanja na 15029 zaporednih vzorcih z Onkološkega Inštituta v obdobju od 2006 do 2021Barbara Gazić, Olga Blatnik, Jerca Blazina, Juan Antonio Contreras, Gorana Gašljević, Biljana Grčar-Kuzmanov, Andreja Klevišar Ivančič, Snežana Pavlović Djokić, Primož Drev, 2022, published professional conference contribution abstract Keywords: onkologija, rak dojke, patologija
Published in DiRROS: 14.02.2023; Views: 584; Downloads: 131
Full text (87,23 KB) |
8. HER2 pri invazivnem karcinomu dojke – rezultati določanja na 15 184 zaporednih vzorcih z Onkološkega Inštituta v obdobju 2006 do 2021Primož Drev, Olga Blatnik, Jerca Blazina, Juan Antonio Contreras, Gorana Gašljević, Biljana Grčar-Kuzmanov, Andreja Klevišar Ivančič, Snežana Pavlović Djokić, Barbara Gazić, 2022, published professional conference contribution abstract Keywords: onkologija, rak dojke, patologija
Published in DiRROS: 14.02.2023; Views: 518; Downloads: 127
Full text (107,23 KB) |
9. Pomen PIK3CA aktivirajočih mutacij za izid bolezni pri bolnicah z invazivnim lobularnim karcinomom dojke, zdravljenih z dopolnilno endokrino terapijoDomen Ribnikar, Valentina Jerič Horvat, Ivica Ratoša, Zachary Veitch, Biljana Grčar-Kuzmanov, Srdjan Novaković, Erik Langerholc, Maja Pohar Perme, Eitan Amir, Boštjan Šeruga, 2022, published professional conference contribution abstract Keywords: onkologija, rak dojke, kemoterapija
Published in DiRROS: 27.01.2023; Views: 587; Downloads: 147
Full text (46,13 KB) |
10. Priporočila za obravnavo bolnikov z malignimi limfomiBarbara Jezeršek Novaković, Lučka Boltežar, Andreja Eberl, Gorana Gašljević, Biljana Grčar-Kuzmanov, Monika Jagodic, Tanja Južnič Šetina, Veronika Kloboves-Prevodnik, Gregor Kos, Aleš Christian Mihelač, Milica Miljković, Urška Rugelj, Marija Skoblar Vidmar, Uroš Smrdel, Danijela Štrbac, Miha Toplak, Lorna Zadravec-Zaletel, 2023, professional monograph Keywords: maligni limfomi, smernice, novotvorbe
Published in DiRROS: 24.01.2023; Views: 881; Downloads: 356
Full text (971,73 KB)
This document has many files! More... |
