Browsing by Author "Yalcin, Bulent"

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Association of Age with Breast Cancer Clinical and Pathological Factors: Analysis of Turkish National Breast Cancer Registry
(2015) Benekli, Mustafa; Altundag, Kadri; Dumanli, Esra; Isikdogan, Abdurrahman; Karaoglu, Aziz; Tekin, Salim Basol; Oksuzoglu, Berna; Kocer, Murat; Sevinc, Alper; Boruban, Melih Cem; Turna, Hande; Uslu, Ruchan; Ozyilkan, Ozgur; Yalcin, Bulent; Coskun, Ugur; Kilickap, Saadettin; Dogu, Gamze Gokoz; Ozturk, Banu; Gumus, Mahmut; Buyukberber, Suleyman; Uncu, Dogan; Kara, Oguz; Aliustaoglu, Mehmet; Ozkan, Metin; Cicin, Irfan; Elkiran, E. Tamer; Dane, Faysal; Avci, Nilufer; Ulas, Arife; Ozdemir, Feyyaz; Kaya, Ali Osman
Comparison of Gemcitabine Monotherapy with Gemcitabine and Cisplatin Combination in Metastatic Pancreatic Cancer: A Retrospective Analysis
(2018) Ergun, Yakup; Ozdemir, Nuriye Yildirim; Guner, Ebru Karci; Esin, Ece; Sendur, Mehmet Ali; Koksoy, Elif Berna; Demirci, Nebi Serkan; Eren, Tulay; Dede, Isa; Sezer, Ahmet; Engin, Huseyin; Oksuzoglu, Berna; Yalcin, Bulent; Utkan, Gungor; Zengin, Nurullah; Urun, Yuksel; 30722120
Purpose: Gemcitabine is among the standard first-line agents for the treatment of metastatic pancreatic cancer. However, as the median survival with gemcitabine monotherapy is 6 months, different combinations are being studied for better, prolonged survival. In this multicenter study, we aimed to compare the results of gemcitabine monotherapy with those of gemcitabine and cisplatin combination therapy as first-line treatments for metastatic pancreatic cancer. Methods: Data of 664 patients diagnosed with metastatic pancreatic cancer between January 2007 and December 2016 from seven oncology centers in Turkey were retrospectively evaluated, and 319 patients with gemcitabine alone (n=138) or gemcitabine and cisplatin combination (n=181) as first-line treatment were included. Results: The median patient age was 62 years (range 42-79), being 60 years (42-75) in the gemcitabine/cisplatin arm and 67 years (52-79) in gemcitabine alone arm. no complete response was observed in either arm, whereas partial response rates were 30.1% in gemcitabine/cisplatin arm and 15.3% in gemcitabine alone arm (p=0.001). median overall survival was 8 months (95% CI:7.7-10.2) and was significantly longer in the gemcitabine/cisplatin arm than in the gemcitabine alone arm (10 vs. 6 months, p=0.004). Conclusion: The cemcitabine and cisplatin combination therapy as first-line treatment of metastatic pancreatic cancer yields significantly prolonged survival over gemcitabine monotherapy. In patients with favorable performance conditions, the combination therapy should be preferred.
Docetaxel, Cisplatin, and Fluorouracil Combination in Nenadjuvant Setting in The Treatment of Locally Advanced Gastric Adenocarcinorna: A Phase II NEOT Study
(2014) Ozdemir, Nuriye; Aball, Huseyin; Vural, Murat; Yalcin, Suayib; Olcsuzoglu, Barna; Oguz, Dilek; Bostanci, Birol; Civelek, Burak; Yalcin, Bulent; Zengin, Nurullah; HIK-0062-2022; HIK-0062-2022
Docetaxel, Cisplatin, and Fluorouracil Combination in Neoadjuvant Setting in The Treatment of Locally Advanced Gastric Adenocarcinoma: Phase II NEOTAX Study
(2014) Ozdemir, Nuriye; Abali, Huseyin; Vural, Murat; Yalcin, Suayib; Oksuzoglu, Berna; Civelek, Burak; Oguz, Dilek; Bostanci, Birol; Yalcin, Bulent; Zengin, Nurullah; https://orcid.org/0000-0001-5596-0920; 25234436; D-7660-2016
This phase II trial aimed to evaluate the efficacy and safety of docetaxel, cisplatin, and fluorouracil (DCF) combination in neoadjuvant setting in patients with locally advanced gastric adenocarcinoma. Fifty-nine patients with resectable or unresectable locally advanced gastric and gastroesophageal cancer were recruited in this multicenter, single-arm, open-label, local clinical phase II study conducted at three centers from Turkey between June 2006 and March 2012. Patients had T3-4 or lymph node-positive disease. After staging with imaging and laparotomy or laparoscopy, they received three cycles of DCF with lenograstim. Imaging studies were repeated after the last two cycles. Patients who underwent surgery were followed up for at least 1 year after the surgery. Toxicity and response were evaluated in accordance with NCI-CTC version3.0 and RECIST 1.0. At baseline, 66.1 % of patients were considered resectable. In 47 patients evaluable, partial response in 16 (34.0 %), stable disease in 27 (57.5 %), and progressive disease in four (8.5 %) were observed. Forty-six patients underwent surgery. In 38 (64.4 %; 95 % confidence interval (CI) 52.2-76.6 %) out of 59 patients, complete resection (R0) was achieved. Median overall and disease-free survival were 19.1 months (95 % CI 13.5-24.7) and 11.6 months (95 % CI 5.9-17.4), respectively. The most frequent grade 3-4 adverse events were neutropenia (52.5 %), febrile neutropenia (11.9 %), leukopenia (39.0 %), and diarrhea (10.5 %). One patient died from an unknown cause. Classical DCF triplet with lenograstim showed a good clinical response with acceptable safety profile in the treatment of locally advanced gastric and gastroesophageal cancer with a significant R0 rate and manageable toxicity.
Geographic Variations of Clinical Characteristics in Breast Cancer: Analysis of Turkish National Breast Cancer Registry
(2015) Kilickap, Saadettin; Altundag, Kadri; Dumanli, Esra; Gumus, Mahmut; Uslu, Ruchan; Ozyilkan, Ozgur; Yalcin, Bulent; Kara, Oguz; Dogu, Gamze Gokoz; Ozturk, Banu; Kaya, Ali Osman; Aliustaoglu, Mehmet; Uncu, Dogan; Ozdemir, Feyyaz; Cicin, Irfan; Ozkan, Metin; Kocer, Murat; Turna, Hande; Buyukberber, Suleyman; Benekli, Mustafa; Coskun, Ugur; Karaoglu, Aziz; Tekin, Salim Basol; Dane, Faysal; Avci, Nilufer; Ulas, Arife; Oksuzoglu, Berna; Sevinc, Alper; Boruban, Melih Cem
Independent Prognostic Value of İnflammation in Metastatic Pancreatic Cancer
(2018) Oksuzoglu, Berna; Esin, Ece; Koksoy, Elif Berna; Demirci, Nebi Serkan; Sendur, Mehmet Ali Nahit; Dede, Isa; Sezer, Ahmet; Karci, Ebru; Yildirim, Nuriye; Yalcin, Bulent; Utkan, Gungor; Urun, Yuksel
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
(2021) Hizal, Mutlu; Bilgin, Burak; Paksoy, Nail; Acikgoz, Ozgur; Sezer, Ahmet; Gurbuz, Mustafa; Ak, Naziye; Yucel, Sebnem; Ayhan, Murat; Erol, Cihan; Demirkiran, Aykut; Mandel, Nil Molinas; Shbair, Abdallah; Gokmen, Ivo; Basoglu, Tugba; Paydas, Semra; Demiray, Atike Gokcen; Iriagac, Yakup; Sakalar, Teoman; Zeynelgil, Esra; Tatli, Ali Murat; Bahceci, Aykut; Guven, Deniz Can; Caner, Burcu; Can, Alper; Gulmez, Ahmet; Karakas, Yusuf; Yalcin, Bulent; Demirkazik, Ahmet; Bilici, Ahmet; Aydiner, Adnan; Yumuk, Perran Fulden; Sendur, Mehmet Ali Nahit; 34331582
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.