Gulnihal Tufan
Gazi University
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Featured researches published by Gulnihal Tufan.
Clinical Genitourinary Cancer | 2013
Bulent Cetin; Veli Berk; Mehmet Ali Kaplan; Barıs Afsar; Gulnihal Tufan; Metin Ozkan; Abdurahman Isikdogan; Mustafa Benekli; Ugur Coskun; Suleyman Buyukberber
BACKGROUND Tyrosine kinase inhibitor is a standard treatment for mRCC. The NLR, an index of systemic inflammation, is associated with outcome in several cancer types. To study the association of pretreatment NLR with PFS and overall survival (OS) of patients treated with VEGF-targeted therapy. PATIENTS AND METHODS We retrospectively studied an unselected cohort of patients with mRCC, who were treated with TKIs. Kaplan-Meier and log-rank analyses were employed on PFS and OS and multivariate Cox proportional hazard model analyzed clinical parameters for their prognostic relevance. RESULTS A total of 100 patients with mRCC who had early progressed after first-line therapy with interferon-α were included in this retrospective multicenter study conducted at 4 centers between February 2008 and December 2011. The median of the NLR was 3.04 and patients were divided into 2 higher and lower NLR groups according to median of NLR. Median PFS was 9 versus 11 months in patients with baseline NLR > 3.04 versus ≤ 3.04 (P = .009). The median OS was 16 months versus 29 months, in patients with NLR > 3.04 versus ≤ 3.04, respectively (P = .004). In the whole group OS was independently associated with higher NLR (hazard ratio [HR], 2.406; P = .004), PFS more than 6 months (HR, 4.081; P = .0001), and sex (HR, 2.342; P = .040). On the other hand in the higher NLR group (HR, 1.107; P = .009) Memorial Sloan-Kettering Cancer Center score (HR, 3.398; P = .0001) was associated with PFS. CONCLUSION In patients with mRCC treated with VEGF-targeted therapy, pretreatment NLR, the duration of PFS might be associated with OS. This should be investigated prospectively.
Breast Care | 2013
Bulent Cetin; Mustafa Benekli; Faysal Dane; Cem Boruban; Mahmut Gumus; Berna Oksuzoglu; Mehmet Ali Kaplan; Gulnihal Tufan; Alper Sevinc; Ugur Coskun; Suleyman Buyukberber
Background: The efficacy and safety of the lapatinib and capecitabine combination remain elusive in elderly patients with metastatic breast cancer (MBC), who progress after trastuzumab-based therapy. Patients and Methods: A total of 26 patients with HER2-positive MBC were included in this retrospective multicenter study. Median age was 69 years (range 65-82 years). All patients were treated with the combination of lapatinib (1,250 mg/day, continuously) and capecitabine (2,000 mg/m2 on days 1-14 of a 21-day cycle). Data on demographics, clinical outcome, and toxicity were collected for descriptive analyses. Results: The median follow-up was 10 months (range 2-31 months). An overall response rate of 33.4% was achieved, including 1 complete response (3.8%), and 8 partial responses (30.8%). Median progression-free survival was 7 months (95% confidence interval (CI) 5-8), and the median overall survival was 15 months (95% CI 11-19). Most common side effects were fatigue (53.8%), diarrhea (46%), vomiting (36.3%), hand-foot syndrome (34.5%), and anorexia (34.6%). Grade 3-4 toxicities were identified as hand-foot syndrome (3.8%), diarrhea (7.6%), and fatigue (11.5%). There were no symptomatic cardiac events. Conclusion: Lapatinib and capecitabine combination therapy was effective and well tolerated in elderly patients with MBC, who had progressive disease after trastuzumab-based therapy.
Asian Pacific Journal of Cancer Prevention | 2013
Ahmet Bilici; Mevlude Inanc; Arife Ulas; Tulay Akman; Mesut Seker; Nalan Akgül Babacan; Ali Inal; Oznur Bal; Lokman Koral; Alper Sevinc; Gulnihal Tufan; Emin Tamer Elkiran; Bala Basak Oven Ustaalioglu; Tugba Yavuzsen; Necati Alkis; Metin Ozkan; Mahmut Gumus
BACKGROUND Non-epithelial malignant ovarian tumors and clear cell carcinomas, Brenner tumors, transitional cell tumors, and carcinoid tumors of the ovary are rare ovarian tumors (ROTs). In this study, our aim was to determine the clinicopathological features of ROT patients and prognostic factors associated with survival. MATERIALS AND METHODS A total of 167 patients with ROT who underwent initial surgery were retrospectively analyzed. Prognostic factors that may influence the survival of patients were evaluated by univariate and multivariate analyses. RESULTS Of 167 patients, 75 (44.9%) were diagnosed with germ-cell tumors (GCT) and 68 (40.7%) with sex cord-stromal tumors (SCST); the remaining 24 had other rare ovarian histologies. Significant differences were found between ROT groups with respect to age at diagnosis, tumor localization, initial surgery type, tumor size, tumor grade, and FIGO stage. Three-year progression-free survival (PFS) rates and median PFS intervals for patients with other ROT were worse than those of patients with GCT and SCST (41.8% vs 79.6% vs 77.1% and 30.2 vs 72 vs 150 months, respectively; p=0.01). Moreover, the 3-year overall survival (OS) rates and median OS times for patients with both GCT and SCST were better as compared to patients with other ROT, but these differences were not statistically significant (87.7% vs 88.8% vs 73.9% and 170 vs 122 vs 91 months, respectively; p=0.20). In the univariate analysis, tumor localization (p<0.001), FIGO stage (p<0.001), and tumor grade (p=0.04) were significant prognostic factors for PFS. For OS, the univariate analysis indicated that tumor localization (p=0.01), FIGO stage (p=0.001), and recurrence (p<0.001) were important prognostic indicators. Multivariate analysis showed that FIGO stage for PFS (p=0.001, HR: 0.11) and the presence of recurrence (p=0.02, HR: 0.54) for OS were independent prognostic factors. CONCLUSIONS ROTs should be evaluated separately from epithelial ovarian cancers because of their different biological features and natural history. Due to the rarity of these tumors, determination of relevant prognostic factors as a group may help as a guide for more appropriate adjuvant or recurrent therapies for ROTs.
Japanese Journal of Clinical Oncology | 2013
Bulent Cetin; Mehmet Ali Kaplan; Veli Berk; Gulnihal Tufan; Mustafa Benekli; Abdurrahman Isikdogan; Metin Ozkan; Ugur Coskun; Suleyman Buyukberber
OBJECTIVE Surgical resection of asymptomatic primary colorectal cancer in patients presenting with synchronous unresectable metastatic disease is controversial. Concerns and controversies remain over combining cytotoxic chemotherapy with bevacizumab in this patient population. METHODS We identified medical records of 99 patients with synchronous metastatic primary colorectal cancer who received chemotherapy with bevacizumab as their initial treatment. The incidence of subsequent use of surgery and surgical outcomes were recorded. Patients were also assessed for overall survival. RESULTS Patients who received bevacizumab-containing chemotherapy for synchronous metastatic primary colorectal cancer were divided into the non-surgery and surgery groups according to the resection status of their asymptomatic primary tumor. In the non-surgery group, two patients (4.4%) underwent additional surgery, while three patients (5.7%) required surgery for rectovesical fistula in the surgery group. The median overall survival was 17 months for the non-surgery group (95% CI: 10.6-23.3 months) and 23 months for the surgery group (95% CI: 21.3-24.6 months; P = 0.322). CONCLUSIONS This study utilizing chemotherapy with bevacizumab did not result in an increased rate of morbidity related to the unresected primary tumor. Survival is not compromised by leaving the primary colon tumor intact.
Onkologie | 2016
Nur Sener Dinc; Kübra Aydın; Hatice Odabas; Ozlem Ercelep; Gulnihal Tufan; Mesut Seker; Nurgul Yasar; Dincer Aydin; Sinemis Yuksel; Aslihan Guven Mert; Melike Ozcelik; Taner Korkmaz; Ramazan Yildiz; Mehmet Aliustaoglu; Alpaslan Mayadagli; Faysal Dane; Mahmut Gumus
Background: We investigated the role of standardized uptake values (SUVs) of the primary tumor in small cell lung cancer (SCLC) patients. Patients and Methods: The relationship between SUV and response to treatment was investigated using receiver operating characteristic (ROC) curve analysis, and the efficient cut-off value for detecting response to treatment was determined. The effects of SUV on response to treatment and survival were investigated. Results: 90 patients with a median age of 58 years (range 39-83 years) were included. Median follow-up was 11 months. The suitable cut-off SUV for determination of response was found to be 10 in ROC analysis. The sensitivity and specificity of this value were 85.7% (95% confidence interval (95% CI) 63-96) and 61.8% (95% CI 49-73) (area under the curve 0.783; p = 0.0001), respectively. The overall objective response rate in patients with involvement above the cut-off value was 93.3% compared to 59.1% in those with involvement below the cut-off value (p < 0.0001). In uni- and multivariate analysis, favorable effects of limited-stage disease on response to treatment were established (p < 0.05). The effect of an SUV higher than the cut-off value on progression-free survival was borderline (p = 0.085). Conclusion: These data may contribute to identifying prognostic disease characteristics and response to treatment.
Journal of Cancer Research and Therapeutics | 2015
Ozge Gumusay; Guldal Yilmaz; Utku Aydil; Ahmet Ozet; Gulnihal Tufan; Ozlem Erdem; Yusuf Kizil; Mustafa Benekli
In the head and neck mucosa, neuroendocrine carcinomas of the oral cavity is rare. Herein, we present the first report of a small cell neuroendocrine carcinoma in a 54-year-old man on the right lateral posterior tongue. It is important to remember that although neuroendocrine small cell carcinomas (SCCs) are most commonly seen in the lung, they rarely may arise in the extrapulmonary sites, including salivary glands, as well. As there is not any standard therapeutic regimen already existing, it is important to be aware of and to know how to deal with such rare cases.
Chinese Journal of Cancer Research | 2015
Nedim Turan; Mustafa Benekli; Olcun Umit Unal; Ilkay Tugba Unek; Didem Tastekin; Faysal Dane; Efnan Algin; Sukran Ulger; Tulay Eren; Turkan Ozturk Topcu; Esma Turkmen; Nalan Akgül Babacan; Gulnihal Tufan; Zuhat Urakci; Basak Oven Ustaalioglu; Ozlem Sonmez Uysal; Ozlem Ercelep; Burcu Yapar Taskoylu; Asude Aksoy; Mustafa Canhoroz; Umut Demirci; Erkan Dogan; Veli Berk; Ozan Balakan; Ahmet Şiyar Ekinci; Mukremin Uysal; Ibrahim Petekkaya; Selcuk Cemil Ozturk; Onder Tonyali; Bulent Cetin
BACKGROUND We examined the impact of adjuvant modalities on resected pancreatic and periampullary adenocarcinoma (PAC). METHODS A total of 563 patients who were curatively resected for PAC were retrospectively analyzed between 2003 and 2013. RESULTS Of 563 patients, 472 received adjuvant chemotherapy (CT) alone, chemoradiotherapy (CRT) alone, and chemoradiotherapy plus chemotherapy (CRT-CT) were analyzed. Of the 472 patients, 231 were given CRT-CT, 26 were given CRT, and 215 were given CT. The median recurrence-free survival (RFS) and overall survival (OS) were 12 and 19 months, respectively. When CT and CRT-CT groups were compared, there was no significant difference with respect to both RFS and OS, and also there was no difference in RFS and OS among CRT-CT, CT and CRT groups. To further investigate the impact of radiation on subgroups, patients were stratified according to lymph node status and resection margins. In node-positive patients, both RFS and OS were significantly longer in CRT-CT than CT. In contrast, there was no significant difference between groups when patients with node-negative disease or patients with or without positive surgical margins were considered. CONCLUSIONS Addition of radiation to CT has a survival benefit in patients with node-positive disease following pancreatic resection.
Journal of Oncology Pharmacy Practice | 2011
Umut Demirci; Suleyman Buyukberber; Tansel Cakir; Aylar Poyraz; Meltem Baykara; Esra Karakus; Gulnihal Tufan; Mustafa Benekli; Ugur Coskun
Mucinous breast carcinoma (MBC) is a rare histological type of breast cancer and rarely associated with advanced disease. We report a case that had MBC with an isolated adrenal metastasis which was removed by laparoscopic adrenelectomy. This case is unique due to the unexpected metastasis of pure mucinous carcinoma developed after 4 years of hormone therapy.
Thoracic Cancer | 2014
Nedim Turan; Mustafa Benekli; Faysal Dane; Olcun Umit Unal; Hasan Volkan Kara; Dogan Koca; Ozlem Balvan; Tulay Eren; Didem Tastekin; Kaan Helvaci; Veli Berk; Umut Demirci; Selcuk Cemil Ozturk; Erkan Dogan; Bulent Cetin; Mehmet Kucukoner; Onder Tonyali; Gulnihal Tufan; Ilhan Oztop; Mahmut Gumus; Ugur Coskun; Aytug Uner; Ahmet Ozet; Suleyman Buyukberber
We investigated the impact of modern chemotherapy regimens and bevacizumab following pulmonary metastasectomy (PM) from metastatic colorectal cancer (CRC).
Gazi Medical Journal | 2013
Meltem Baykara; Efnan Algin; Suleyman Buyukberber; Gulnihal Tufan; Burçak Cavnar; Umut Demirci; Ugur Coskun; Mustafa Benekli
Noroleptik Malign Sendrom (NMS), hipertermi, muskuler rijidite, suur degisikligi, otonomik disfonksiyon, serum kreatinfosfokinaz (CPK) duzeyinde yukselme ve lokositoz ile karakterize olup; nadir gorulen ve fatal seyredebilen bir sendromdur. Metoklopropamid iliskili NMS nadir fakat hayati tehtid eden bir durumdur. Metoklopropamid iliskili NMS, metoklopropamidin beyindeki dopamin reseptorlerini bloke etmesi ve guclu kolinerjik stimulasyon etkisi sonucu ortaya cikmaktadir. Biz burada metastatik mide kanseri tanisiyla takip edilirken emezis nedeniyle metoklopropamid kullanimi sonrasinda NMS gelisen bir olguyu sunuyoruz.