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Featured researches published by Isil Somali.


Japanese Journal of Clinical Oncology | 2008

Epidemiology and survival of hepatocellular carcinoma in Turkey: outcome of multicenter study.

Ahmet Alacacıoğlu; Isil Somali; Ilkay Simsek; Ibrahim Astarcioglu; Metin Ozkan; Cemalettin Camci; N. Alkis; Aziz Karaoglu; Oktay Tarhan; Tugba Unek; Ugur Yilmaz

OBJECTIVE Hepatocellular cancer (HCC) is one of the important health problems in Turkey. We aimed to determine the clinical and demographic features of HCC in the Turkish population and to evaluate the prognostic and survival features. METHOD Two hundred and twenty-one patients with HCC from five hospitals in Turkey are included in this study. RESULTS In 44.4% of the 221 patients with hepatitis B virus and in 21.3% of the 221 patients with hepatitis C virus were found to be responsible for HCC etiology. It has been shown that HCC developed on cirrhosis basis in 74.2% of the patients. HCC was presented with single solitary nodule in 69.2% of the patients. Non-liver metastasis was present in 12.5% of the patients. In 21.7% of the patients, alpha-fetoprotein (AFP) levels were above the diagnostics level of 400 ng/ml. The median overall survival (OS) of 221 patients was 14 months. The median OS of the patients with Child-Pugh A class was significantly longer than that with Child-Pugh B and C classes. The OS of the individuals with normal AFP levels was also longer than that with high AFP levels. The OS of the patients with Stage I HCC according to tumor node metastasis (TNM) classification, the female patients and the treated patients group was found to be significantly good. CONCLUSIONS In conclusion, the viral etiology (hepatitis B and C infections) in Turkish population is found to be an important factor in HCC development. The Child-Pugh classification, AFP levels, TNM classification, being female and treatment were determined to be important prognostic factors in HCC patients.


Asian Pacific Journal of Cancer Prevention | 2013

Prognostic and Predictive Value of Hematologic Parameters in Patients with Metastatic Renal Cell Carcinoma: Second Line Sunitinib Treatment Following IFN-alpha

Ahmet Dirican; Yuksel Kucukzeybek; Cigdem Erten; Isil Somali; Lutfiye Demir; Alper Can; Kadriye Bahriye Payzin; Ibrahim Vedat Bayoglu; Murat Akyol; Yasar Yildiz; Mehmet Koseoglu; Ahmet Alacacioglu; Mustafa Oktay Tarhan

BACKGROUND Long-term survival is a problem with locally advanced and metastatic renal cell carcinomas. Sunitinib malate is an oral multitargeted tyrosine kinase inhibitor, but data on sunitinib use as a second line treatment in metastatic renal cell carcinoma (mRCC) are limited. Prognostic and predictive value of peripheral blood markers has been shown for many cancers. MATERIALS AND METHODS Efficacy and safety profiles of sunitinib after interferon alpha were evaluated based on retrospective data for 23 patients with mRCC. Hematological parameters (neutrophils, lymphocytes, platelets, mean platelet volume, neutrophil/lymphocyte ratio, platelet/lymphocyte ratio) were recorded at the time of metastasis. It was evaluated whether hematological parameters were prognostic and predictive factors. RESULTS Median progression-free survival (PFS) time was 16.5 months (95%CI: 0-34.5). Median overall survival (OS) time was 25.7 months (95%CI: 10.8-40.0). Most common side effects were neutropenia (52.2%), stomatitis (26.1%) and hand-food syndrome (26.1%). PFS was found 3.13 vs 17.1 months in patients with neutrophil / lymphocyte ratio (NLR)>3 vs NLR≤3 (p:0.012). Median OS was 6.96 vs 27.1 months in patients with NLR>3 vs NLR≤3 (p:0.001).While 75% of patients who responded to sunitinib had NLR≤3, in 72% of patients with no response to sunitinib NLR>3 was detected (p:0.036). The association between the Memorial Sloan-Kettering Cancer Center (MSKCC) criteria and NLR was statistically significant (p:0.022). CONCLUSIONS Data on second line sunitinib treatment following cytokine in mRCC are limited. In our study, we observed second line sunitinib treatment following IFN-alpha to be effective and tolerable. NLR appeared to have prognostic and predictive value.


Chemotherapy | 2006

Irinotecan Combined with Infusional 5-Fluorouracil and High-Dose Leucovorin for the Treatment of Advanced Gastric Carcinoma as the First-Line Chemotherapy

Ugur Yilmaz; Ilhan Oztop; Ahmet Alacacıoğlu; Arzu Yaren; Oktay Tarhan; Isil Somali

Background: Because of insufficient activity and high toxicity of current chemotherapy regimens in advanced gastric cancer (AGC), there is a need for newer regimens. Methods: Twenty-five chemonaive patients with AGC have been treated with FOLFIRI regimen consisting of irinotecan 180 mg/m2 over 30 min on day 1 combined with leucovorin 200 mg/m2 over 2 h followed by 5-fluorouracil 400 mg/m2 as bolus and 600 mg/m2 as a 22-hour infusion on day 1 and 2. The treatment was administered every 14th day until progression or intolerable toxicity. Results: Twenty-five patients (17 male, 8 female; 22 patients with PS 0–1 and 3 patients with PS 2), median age 54 (range 25–77), received a total of 230 courses of chemotherapy (median 9; range 1–18). Objective responses were observed in 9 patients (36%), all being partial. Median progression-free survival, 1- and 2-year progression-free survival rates were 8.6 months, 28.4% and 15.3%, respectively. Median overall survival, 1- and 2-year overall survival rates were 11.6 months, 48.0% and 17.8%, respectively. As serious adverse events, grade 3–4 neutropenia was observed in 5 patients (20.0%), grade 3 diarrhea in 4 patients (16.0%). No treatment-related death occurred. Conclusion: FOLFIRI regimen is an active regimen with acceptable toxicity for the treatment of AGC.


Cancer Biomarkers | 2013

The effects of hematological parameters and tumor-infiltrating lymphocytes on prognosis in patients with gastric cancer

Ahmet Dirican; Nese Ekinci; Arzu Avci; Murat Akyol; Ahmet Alacacioglu; Yuksel Kucukzeybek; Isil Somali; Cigdem Erten; Lutfiye Demir; Alper Can; Ibrahim Vedat Bayoglu; Betul Koyuncu; Eda Ulger; Mustafa Oktay Tarhan

BACKGROUND It is well known that tumor-infiltrating lymphocytes (TIL) and, to a lesser extent, peripheral hematologic parameters from patients with cancer have to effect on prognosis. The aim of this study was to evaluate the effect of hematologic parameters and TIL on prognosis of patients with gastric cancer. METHODS 236 patients who had diagnosed as gastric adenocarcinoma. All hematologic parameters were noted at the time of diagnosis. The number of lymphocyte aggregates as well as the number of lymphocytes within these agregat was counted.The prognostic significance and correlations of high neutrophil-lymphocyte ratio (NLR) together with TIL, was evaluated by multivaried analysis. RESULTS The cut-off values of NLR and derived NLR (dNLR) were 3.8 and 2. The NLR was independently associated with survival (P < 0.001). dNLR was not independently associated with overall survival. No significant advantages for overall survival were found for the high TIL (p: 0.372). It was not determined correlation between TIL - NLR and TIL-lymphoid aggregate density (respectivly, P: 0.104; P: 0.246). CONCLUSIONS The results suggest that the elevated NLR predicts poor overall survival following at the time diagnosis for all stage gastric cancer. dNLR was not independently associated with overall survival. There is insufficient evidence to the assesment of TIL by a nonspesific method. Therefore further studies is required, to confirm our hypothesis in larger patient cohorts.


Chemotherapy | 2009

Cisplatin plus gemcitabine chemotherapy in taxane/anthracycline-resistant metastatic breast cancer.

Isil Somali; Ahmet Alacacioglu; Mustafa Oktay Tarhan; Nezih Meydan; Cigdem Erten; Songul Usalp; Ugur Yilmaz

Background: The most commonly used chemotherapeutic regimens in the treatment of metastatic breast cancer (MBC) include anthracyclines and taxanes. In our study, we investigated the efficacy and tolerability of cisplatin plus gemcitabine combination chemotherapy regimen in patients with MBC, who exhibited disease progression after anthracycline- and taxane-based chemotherapy. Methods: Thirty-three patients with taxane/anthracycline-resistant MBC have been treated with gemcitabine 1,000 mg/m2 intravenously and cisplatin 30 mg/m2 intravenously on days 1 and 8 of a 3-week treatment cycle. Results: Thirty-one patients were assessable for response. One of the 31 patients (3.2%) showed complete response, while 7 patients (22.6%) showed partial response; the objective response rate was 25.8%. Stable and progressive disease was observed in 6 (19.4%) and 17 patients (54.8%), respectively. The median time to progression was 4 months (95% CI 2.15–5.85). The median survival time of all patients was 9.5 months (95% CI 7.86–11.14). Conclusion: Gemcitabine and cisplatin combination therapy is moderately active and safe in patients with MBC previously treated with anthracycline and taxanes.


International Journal of Clinical Practice | 2007

5-Fluorouracil increases the number and complexity of premature complexes in the heart: a prospective study using ambulatory ECG monitoring

Ugur Yilmaz; Ilhan Oztop; A. Ciloglu; Taha Okan; U. Tekin; A. Yaren; Isil Somali; Ahmet Alacacıoğlu; O. Kirimli

The cardiac toxicity of LV5FU2 (de Gramont) regimen which is a widely used chemotherapy regimen in gastrointestinal system cancers is not well defined. We aimed to evaluate the impact of this regimen on cardiac rhythm.


Asian Pacific Journal of Cancer Prevention | 2013

Cisplatin Plus Gemcitabine for Treatment of Breast Cancer Patients with Brain Metastases: a Preferential Option for Triple Negative Patients?

Cigdem Erten; Lutfiye Demir; Isil Somali; Ahmet Alacacioglu; Murat Akyol; Alper Can; Ahmet Dirican; Vedat Bayoglu; Mustafa Oktay Tarhan

BACKGROUND To assess the efficacy and tolerability of Cisplatin plus Gemcitabine combination in patients with brain metastases (BM) from breast cancer (BC). MATERIALS AND METHODS Eighteen BC patients with BM who were treated with Cisplatin plus Gemcitabine regimen between 2003-2011 were evaluated. RESULTS A median of 6 cycles of this regimen were received, in fifteen patients (83.3%) as first-line chemotherapy, in 2 as second- line and in 1 as third-line after diagnosis of BM. Dose reduction was performed in 11 (61.1%) patients; major reasons were neutropenia and leukopenia. Grade III neutropenia and Grade II trombocytopenia rates were 33.3% and 16.7% respectively. Overall response rate (ORR; complete+partial response rate) was 33.4% (n=6) for the entire study population; triple negative patients achieved an 66.6% ORR while hormone receptor (HR) positive patients had 25% and HER2 positive patients 12.5%. Median progression-free survival was 5.6 months (2.4-8.8 months, 95%CI) and longer in patients with triple negative breast cancer (TNBC) (median 7.4 months, 95%CI, 2.4-12.3 months) than the patients with other subtypes (median 5 months for HER2 positive and 3.6 months for HR positive patients). Median PFS of the patients with TNBC who received this regimen as first-line was 9.2 months (5.2-13.2 months, 95%CI). CONCLUSIONS Cisplatin plus Gemcitabine may be a treatment option for patients with BM from breast cancer. Longer PFS and higher response rates are results that support the usage of this regimen especially for the triple negative subtype. However, further prospective and randomized trials are clearly required to provide more exact information.


Asian Pacific Journal of Cancer Prevention | 2013

Prognostic Significance of Circulating Tumor Cells and Serum CA15-3 Levels in Metastatic Breast Cancer, Single Center Experience, Preliminary Results

Mustafa Oktay Tarhan; Ataman Gonel; Yuksel Kucukzeybek; Cigdem Erten; Serap Çuhadar; Seyran Yigit; Aysenur Atay; Isil Somali; Ahmet Dirican; Lutfiye Demir; Mehmet Koseoglu

BACKGROUND Breast cancer is the second leading cancer causing death in women. Circulating tumor cells are among the prognostic factors while tumor markers are of diagnostic value and can be used for follow-up. The aim of this study was to investigate the correlation between the prognostic significance of the serum CA15-3 levels, number of circulating tumor cells and histopathological tumor factors. MATERIALS AND METHODS Thirty patients recently diagnosed with breast cancer were included in the study. Number of circulating tumor cells and serum CA15-3 level were assessed when metastasis was detected and diagnostic value was assessed. Presence of associations with estrogen and progesterone receptors, c-erbB2, Ki-67 proliferation index and histological grade were also evaluated. RESULTS Median overall survival of the patients with serum CA15-3 levels of >108 ng/dl was 19 months whereas for those with a low serum level it was 62 months. Median overall survival for CTC ≥5vs CTC<5 patients was 19 months and 40 months respectively. The difference between the two groups was statistically significant. CONCLUSIONS Prognostic significance of the CTC count and CA15-3 levels in metastatic breast cancer patients was demonstrated.


Asian Pacific Journal of Cancer Prevention | 2014

Treatment of metastatic colorectal cancer with or without bevacizumab: can the neutrophil/lymphocyte ratio predict the efficiency of bevacizumab?

Ahmet Dirican; Umut Varol; Yuksel Kucukzeybek; Ahmet Alacacioglu; Cigdem Erten; Isil Somali; Alper Can; Lutfiye Demir; Bayoglu; Murat Akyol; Yasar Yildiz; Koyuncu B; Coban E; Mustafa Oktay Tarhan

BACKGROUND The purpose of this study was to analyze the predictive value of neutrophil/lymphocyte ratio (NLR) to better clarify which patient groups will benefit the most from particular treatments like bevacizumab. MATERIALS AND METHODS A total of 245 treatment-naive metastatic colorectal cancern (mCRC) patients were retrospectively enrolled and divided into 2 groups: 145 group A patients were treated with chemotherapy in combination with bevacizumab, and 100 group B patients were treated as above without bevacizumab. RESULTS Group A patients had better median overall survival (OS) and progression-free survival (PFS) (24.0 and 9.0 months) than group B patients (20 and 6.0 months) (p=0.033; p=0.015). In patients with low NLR, OS and PFS were significantly longer in group A patients (27 vs 18 months, p=0.001; 11 vs 7 months, p=0.017). CONCLUSIONS We conclude that NLR, a basal cancer related inflammation marker, is associated with the resistance to bevacizumab- based treatments in mCRC patients.


Asian Pacific Journal of Cancer Prevention | 2013

Does Immunohistochemistry Provide Additional Prognostic Data in Gastrointestinal Stromal Tumors

Lutfiye Demir; Nese Ekinci; Cigdem Erten; Yuksel Kucukzeybek; Isil Somali; Alper Can; Ahmet Dirican; Vedat Bayoglu; Fulya Cakalagaoglu; Mustafa Oktay Tarhan

BACKGROUND To investigate the predictive and prognostic effects of clinicopathologic and immunohistochemical (IHC) features in patients with gastrointestinal stromal tumours (GISTs). MATERIALS AND METHODS Fifty-six patients who were diagnosed with GIST between 2002 and 2012 were retrospectively evaluated. Relationships between clinicopathologic/immunohistochemical factors and prognosis were investigated. RESULTS Median overall survival (OS) of the whole study group was 74.9 months (42.8-107.1 months), while it was 95.2 months in resectable and 44.7 months in metastatic patients respectively (p=0.007). Epitheliolid tumor morphology was significantly associated with shortened OS as compared to other histologies (p=0.001). SMA(+) tumours were significantly correlated with low (<10/50HPF) mitotic activity (p=0.034). Moreover, SMA(+) patients tended to survive longer and had significantly longer disease-free survival (DFS) times than SMA (-) patients (37.7 months vs 15.9 months; p=0.002). High Ki-67 level (≥30%) was significantly associated with shorter OS (34 vs 95.2 months; 95%CI; p=0.001). CD34 (-) tumours were significantly associated with low proliferative tumours (Ki-67<%10) (p=0.026). Median PFS (progression-free survival) of the patients who received imatinib was 36 months (27.7-44.2 months). CD34 (-) patients had significantly longer PFS times than that of negative tumours; (50.8 vs 29.8 months; p=0.045). S100 and desmin expression did not play any role in predicting the prognosis of GISTs. Multivariate analysis demonstrated that ≥10/50HPF mitotic activity/HPF was the only independent factor for risk of death in GIST patients. CONCLUSIONS Despite the negative prognostic and predictive effect of high Ki-67 and CD34 expression, mitotic activity remains the strongest prognostic factor in GIST patients. SMA positivity seems to affect GIST prognosis positively. However, large-scale, multicenter studies are required to provide supportive data for these findings.

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Ilhan Oztop

Dokuz Eylül University

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Ugur Yilmaz

Dokuz Eylül University

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Oktay Tarhan

Dokuz Eylül University

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Nezih Meydan

Adnan Menderes University

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