Browsing by Author "Caner, Burcu"

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Dual HER2 inhibition strategies in the management of treatment-refractory metastatic colorectal cancer: History and status
(Baishideng Publishing Group, 2018-06-08) Kanat, Özkan; Ertaş, Hülya; Caner, Burcu; Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; 0000-0003-1591-3323; 0000-0001-6973-6540; 0000-0001-8306-4349; HJH-6371-2023; AAE-8549-2022; 55881548500; 57195326915; 57193498477
Human epidermal growth factor receptor 2 (HER2) signaling pathway activation has been identified as a contributor to de novo or acquired resistance to epidermal growth factor receptor (EGFR) inhibitors in a small subset of patients with metastatic colorectal cancer (mCRC). Dual anti-HER2-targeted treatment exhibits strong antitumor activity in preclinical models of HER2-positive mCRC, supporting its testing in clinical trials. The HERACLES trial at four Italian academic cancer centers has confirmed the effectiveness of dual blockage of HER2 with trastuzumab plus lapatinib in patients with heavily pretreated HER2-positive mCRC, refractory to the anti-EGFR antibodies cetuximab or panitumumab. Here, we reviewed the preclinical studies exploring the role of HER2 signaling in the development of anti-EGFR therapy resistance and discussed the status of clinical trials assessing the activity of HER2 inhibitors in this setting.
Efficacy of regorafenib in the second-and third-line setting for patients with advanced hepatocellular carcinoma: A real life data of multicenter study from Turkey
(Imprimatur Publications, 2020-07-01) Hacıoğlu, Muhammet Bekir; Köstek, Osman; Karabulut, Senem; Taştekin, Didem; Göksu, Sema Sezgin; Alandağ, Celal; Akagündüz, Baran; Bilgetekin, İrem; Yildiz, Birol; Köse, Fatih; Kaplan, Muhammet Ali; Gülmez, Ahmet; Doğan, Ender; Güven, Deniz Can; Gürbüz, Mustafa; Ergun, Yakup; Karaagaç, Mustafa; Demiray, Atike Gökçen; Türker, Sema; Sakalar, Teoman; Özkul, Özlem; Telli, Tugba Akın; Şahin, Süleyman; Kılıçkap, Saadettin; Bilici, Ahmet; Erdoğan, Bulent; Cicin, Irfan; CANER, BURCU; Caner, Burcu; Şahin, Ahmet Bilgehan; ŞAHİN, AHMET BİLGEHAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim; AAE-8549-2022; HJH-6371-2023
Purpose: After failure of the first-line sorafenib treatment in advanced or metastatic stage hepatocellular carcinoma (HCC), regorafenib is one of the newly-approved targeted agents. We aimed to evaluate the efficacy of regorafenib in patients with advanced HCC treated in the secondor third-line setting.Methods: In this retrospective and multicenter study, advanced HCC patients not eligible for local therapies, who received a secondor third-line regorafenib therapy after progression on the first-line sorafenib or sequential therapy with chemotherapy (CT) followed by sorafenib, were included.Results: In the first-line setting, 28 (28.9%) patients received CT and 69 (71.1%) patients received sorafenib. There were 24 (24.7%) patients who were intolerant to sorafenib. Disease control rate (DCR) was 53.6% for all patients treated with regorafenib, 62.3% in patients who received regorafenib in the second-line, and 32.1% for those receiving regorafenib in the third-line (p=0.007). Median progression-free survival (PFS) and overall survival (OS) were 5.6 (range; 4.3-6.9) and 8.8 (range, 6.3-11.3) months for all patients treated with regorafenib vs. 7.1 months and 10.3 months for patients who received regorafenib in the second-line vs. 5.1 and 8.7 months for patients who received regorafenib in the third-line, respectively; however, there was no statistically significant difference (p(PFS)=0.22 and p(OS)=0.85).Conclusion: Although receiving CT as a first-line therapy in advanced HCC patients did not affect the survival rates of subsequent regorafenib therapy, it might diminish the DCR of regorafenib.
Metastatik endometrioid endometrial karsinom hastalarında tedavi seçeneklerinin sağkalım üzerine etkisi
(Bursa Uludağ Üniversitesi, 2022) Ocak, Birol; Şahin, Ahmet Bilgehan; Abakay, Candan Demiröz; Sali, Seda; Dakiki, Bahar; İşlek, Gizem; Caner, Burcu; Özerkan, Kemal; Deligönül, Adem; Çubukçu, Erdem; Evrensel, Türkkan; Bursa Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı/Tıbbi Onkoloji Bilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyasyon Onkolojisi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.; 0000-0002-7846-0870; 0000-0001-5380-5898; 0000-0001-8575-5477; 0000-0001-9255-2475; 0000-0003-4851-7036; 0000-0003-1591-3323; 0000-0003-1460-6524; 0000-0002-3669-6391; 0000-0002-0070-0889; 0000-0002-9732-5340
Endometrium kanseri (EK) gelişmiş ülkelerde en sık görülen jinekolojik kanserdir. Obezite en önemli risk faktörü olarak kabul edilmektedi r. Endometrium kanserleri içerisinde en sık görülen alt tip endometrioid endometrial karsinomdur (EEK). Çalışmamızda metastatik EEK hastalarının demografik ve klinikopatolojik özelliklerini, kullanılan tedavi yöntemlerinin sağ kalıma etkisini incelemeyi amaçladık. Hastaların medyan yaşı 58 (39,4-81,9) idi. On altı hastanın hastaneye başvuru şikayeti vajinal kanamaydı. Medyan takip süresi 43 (0,2- 104,3) aydı. Hastaların medyan progresyonsuz sağkalım (PS) süresi 39,9 ay (%95 güven aralığı (GA): 35,0-79,1), medyan genel sağkalım (GS) süresi 59,1 ay (%95 GA: 39,1-80,8) saptandı. Kemoradyoterapi alan hastaların PS ve GS süresi sadece kemoterapi ile tedavi edilen hastalara göre istatistiksel anlamlı olarak daha uzundu (log-rank testi, PS için p=0,012, GS için p=0,015). Çalışmamız metastatik evrede seçilmiş hasta grubunda kemoradyoterapinin tercih edilebileceğini desteklemektedir.
Metastatik yumuşak doku sarkomlarında trabektedin kullanımının retrospektif değerlendirilmesi: Tek merkez deneyimi
(Bursa Uludağ Üniversitesi, 2022-06-29) Orhan, Sibel Oyuncu; Ocak, Birol; Şahin, Ahmet Bilgehan; Caner, Burcu; Asan, Buşra; Deligönül, Adem; Çubukçu, Erdem; Evrensel, Türkkan; Bursa Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı/Tıbbi Onkoloji Bilim Dalı.; 0000-0003-1591-3323; 0000-0002-9845-6289; 0000-0002-3669-6391; 0000-0002-0070-0889; 0000-0002-9732-5340
Çalışmada metastatik yumuşak doku sarkomu tanısıyla trabektedin tedavisi alan hastaların tedavi yanıtları, sağkalım sonuçları, ilaç yan etkilerinin değerlendirilmesi amaçlanmıştır. Sarkom tanısıyla trabektedin tedavisi alan 16 hastanın dosyaları retrospektif olarak tarandı. Hastaların demografik özellikleri, tedavi süreleri, tedavi yanıtları, ilaç yan etkileri kaydedildi. 16 hastanın 9’u erkek (%56,2), 7’si kadındı (%43,7). Trabektedin için medyan progresyonsuz sağkalım (progression-free survival, PFS) 2,9 ay, genel sağkalım (overall survival, OS) 6,7 ay saptandı. Sağkalım üzerine etkili olan tek faktör trabektedin tedavi sırası olarak belirlendi. Trabektedini 2. ya da 3.sıra tedavi olarak alan hastalar daha iyi PFS süresine (medyan PFS 10,3 aya karşı 1,6 ay, %95 GA: 0-21.9, p= 0.003) ve OS süresine (medyan 26,7 ay’a karşı 5,7 ay, %95 GA: 16.9-36.5, p= 0.003) sahipti. Sarkom çalışmalarında objektif yanıt değerlendirme kriteri olarak kullanılan büyüme modülasyon indeksi (growth modulation index, GMI) değeri 1,33’ün üzerinde olan hastaların PFS ve OS süreleri istatiksel anlamlı olarak daha iyiydi (medyan PFS 19,8 ay, p=0.002; medyan OS 26,7 ay, p=0.047). Tüm hastalarda yan etki gözlendi, grad 3/4 yan etkiler hematolojik yan etkiler %62,5 ve alanin aminotransferaz (ALT)/ aspartat aminotransferaz (AST) artışı %50 sıklıkta oldu. Çalışmada saptanan PFS, OS, yanıt oranları ve yan etkiler diğer çalışmalar ile benzer saptanmış, trabektedini 2.ve 3.sıra tedavi olarak alan hastaların ilaçtan daha fazla fayda gördüğü belirlenmiştir.
Platinum-induced neurotoxicity: A review of possible mechanisms
(Baishideng Publishing Group Inc, 2017-08-10) Kanat, Özkan; Ertaş, Hülya; Caner, Burcu; CANER, BURCU; Bursa Uludağ Üniversitesi/Tıp Fakültesi/OnkolojiAnabilim Dalı.; 0000-0002-5872-8825; HJH-6371-2023; AAE-8549-2022
Patients treated with platinum-based chemotherapy frequently experience neurotoxic symptoms, which may lead to premature discontinuation of therapy. Despite discontinuation of platinum drugs, these symptoms can persist over a long period of time. Cisplatin and oxaliplatin, among all platinum drugs, have significant neurotoxic potential. A distal dose-dependent symmetrical sensory neuropathy is the most common presentation of platinum neurotoxicity. DNA damage-induced apoptosis of dorsal root ganglion (DRG) neurons seems to be the principal cause of neurological symptoms. However, DRG injury alone cannot explain some unique symptoms such as cold-aggravated burning pain affecting distal extremities that is observed with oxaliplatin administration. In this article, we briefly reviewed potential mechanisms for the development of platinum drugs-associated neurological manifestations.
Risk factors and complications of intracranial pressure monitoring with a fiberoptic device
(Elsevier, 2009-02) Bekar, Ahmet; Doğan, Şeref; Abaş, Faruk; Caner, Burcu; Korfalı, Gülşen; Kocaeli, Hasan; Yılmazlar, Selçuk; Korfalı, Ender; Caner, Burcu; Uludağ Üniversitesi/Tıp Fakültesi/Nöroşirürji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Anestezi ve Reanimasyon Anabilim Dalı.; 0000-0003-3633-7919; AAI-6531-2021; AAH-5070-2021; 7102693077; 6603677218; 8546184300; 25027089000; 6701462594; 6603500567; 6603059483; 7004641343
We prospectively investigated the complications associated with intraparenchymal intracranial pressure (ICP) monitoring using the Camino intracranial pressure device. A fiberoptic ICP monitoring transducer was implanted in 631 patients. About half of the patients (n = 303) also received an external ventricular drainage set (EVDS). The durations (mean +/- SD) of ICP monitoring in patients without and with an EVDS were 6.5 +/- 4.4 and 7.3 +/- 5.1 days, respectively. Infection occurred in 6 patients with only an ICP transducer (6/328, 1.8%) and 24 patients with an EVDS also (24/303, 7.9%). The duration of monitoring had no effect on infection, whereas the use of an EVDS for more than 9 days increased infection risk by 5.11 times. Other complications included transducer disconnection (2.37%), epidural hematoma (0.47%), contusion (0.47%), defective probe (0.31%), broken transducer (0.31%), dislocation of the fixation screw (0.15%), and intraparenchymal hematoma (0.15%). In conclusion, intraparenchymal ICP monitoring systems can be safely used in patients who either have, or are at risk of developing, increased ICP.
The real-life efficacy and safety of osimertinib in pretreated advanced non-small cell lung cancer patients with T790M mutation: A Turkish oncology group study
(Springer, 2021-07-31) Caner, Burcu; CANER, BURCU; Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Bilim Dalı; AAE-8549-2022
Introduction Osimertinib, an irreversible third-generation EGFR-TKI, is the standard of care for second-line treatment of T790M-mutant advanced NSCLC patients whose disease progressed after first-line EGFR-TKI therapy. In this multicenter study, we aimed to determine the real-life efficacy and safety of Osimertinib in pretreated advanced NSCLC patients with T790M mutation. Materials and methods This retrospective trial included advanced T790M-mutant pretreated NSCLC patients who received Osimertinib from 24 different centers in Turkey. Primary endpoint was time-to-treatment discontinuation (TTD). Secondary endpoints were objective response rate (ORR), overall survival (OS), and safety. Results Of 163 patients, 68.7% had EGFR exon 19 deletion and 22.7% had exon 21 L858R mutation. Osimertinib was given as second-line treatment in 96 patients (58.9%) and third-line in 48 patients (29.4%). After median of 13-month follow-up, median TTD was 21.6 months with an 82.2% ORR. Estimated median OS was 32.1 months. Grade 3-4 adverse events were seen in 11.7% of the patients. Conclusion Osimertinib is a highly effective option in second- or third-line treatment of NSCLC patients with T790M mutation, with a favorable safety profile.