Hasan Sozel

Dr. Hasan Sozel


Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 August 2024 in Turkish Journal of Gastroenterology
Verified
Journal Article
Open access
YSYasin Sahinturk
Yasin Sahinturk
GKGokhan Koker
Gokhan Koker
Nizameddin KocaNizameddin Koca
Nizameddin Koca
Hilmi Erdem SumbulHilmi Erdem Sumbul
Hilmi Erdem Sumbul
IDIsmail Demir
Ismail Demir
SUSeyit Uyar
Seyit Uyar
Background/Aims: This awareness study aimed to determine the ultrasound (US) examination rates in relation to US-confirmed metabolic dysfunction-associated fatty liver disease (MAFLD) diagnosis in internal medicine outpatients with type 2 diabetes (T2D) across Türkiye. Materials and Methods: A total of 6283 T2D patients were included in this multicenter retrospective cohort study conducted at 17 internal medicine clinics across Türkiye. The presence and indications for US performed within the last 3 years were recorded along with US-confirmed MAFLD rates, laboratory findings on the day of US, and referral rates. Fibrosis-4 (FIB-4) index was calculated to estimate the risk of advanced liver fibrosis (FIB-4 index ≥ 1.3). Results: Overall, 1731 (27.6%) of 6283 patients had US examination, which revealed MAFLD diagnosis in 69.9% of cases. In addition, 24.4% of patients with US-confirmed MAFLD were at risk of advanced fibrosis (FIB-4 index ≥ 1.3), and the referral rate was 15.5%. Conclusion: In conclusion, our findings emphasize an insufficient MAFLD awareness among clinicians and the likelihood of most of T2D patients to be at risk of living with an unknown status regarding their MAFLD and advanced fibrosis risk. Cite this article as: Şahintürk Y, Köker G, Koca N, et al. Metabolic dysfunction-associated fatty liver disease and fibrosis status in patients with type 2 diabetes treated at internal medicine clinics: Türkiye DAHUDER awareness of fatty liver disease (TR-DAFLD) study. Turk J Gastroenterol. 2024;35(8):643-650.

8 October 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
AKAli Kirik
Ali Kirik
Hilmi Erdem SumbulHilmi Erdem Sumbul
Hilmi Erdem Sumbul
Nizameddin KocaNizameddin Koca
Nizameddin Koca
TKTurkan Pasali Kilit
Turkan Pasali Kilit
SSsibel demiral sezer
sibel demiral sezer
TDTeoman Doğru
Teoman Doğru
Introduction: Metabolic dysfunction-associated steatotic liver disease (MASLD) prevalence data in Türkiye is limited. We aimed to determine the nationwide prevalence of MASLD and advanced hepatic fibrosis risk in subjects with cardiometabolic risk factors (CMRF). Despite recent international consensus redefining fatty liver disease terminology, no nationwide MASLD study has been reported in Türkiye. Methods: This cross-sectional study included 14,371 adults with ≥1 CMRF from 44 centers across 31 cities. MASLD was diagnosed using liver ultrasonography plus cardiometabolic criteria. Advanced fibrosis risk was assessed by fibrosis-4 (FIB-4) score (≥1.3 for ≤65 years; ≥2.0 for >65 years). Logistic regression was used to identify independent predictors of high FIB-4. Results: A total of 61.4% of participants were women, the mean age was 51.3 ± 14.4 years, and the mean BMI was 31.4 ± 6.0 kg/m2. MASLD prevalence was 75.7% (n = 10,873), rising with the number of CMRFs (56.5% with one factor vs. 83.4% with all). The prevalence of high FIB-4 scores was 12.0% overall, being lower in MASLD patients than non-MASLD patients (11.2% vs. 14.4%, p < 0.001). FIB-4 scores decreased with increasing BMI (28.1% underweight vs. 8.7% class III obesity). Male sex, T2DM, and hypertension independently predicted high FIB-4 scores, while smoking, higher BMI, and MASLD were inversely associated. Conclusions: Three-quarters of Turkish adults with CMRF have MASLD. Standard FIB-4 thresholds may underestimate fibrosis risk in obese and smoking populations, underscoring the need for adjusted cut-offs or alternative tools. This study is the first to provide nationwide MASLD prevalence data in Türkiye.

14 April 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
AOAlihan Oral
Alihan Oral
İSİhsan Solmaz
İhsan Solmaz
Nizameddin KocaNizameddin Koca
Nizameddin Koca
UTUlas Serkan Topaloglu
Ulas Serkan Topaloglu
IDIsmail Demir
Ismail Demir
SUSeyit Uyar
Seyit Uyar
Objectives: Obesity is a significant public health concern, as it is associated with the development of numerous chronic diseases. The prevalence of obesity and attendant diseases has been increasing over recent years. This study attempted to ascertain the frequency of chronic diseases in obese patients in Türkiye for the first time on this scale. Methods: A retrospective study was conducted, with patients admitted to the internal medicine outpatient clinics or obesity centers between December 2023 and December 2024 included in this study. Participants were recruited from seven regions, 20 provinces, and 28 centers, and the inclusion criteria were met by those aged 18 years and over with a body mass index (BMI) of 30 kg per square meter (kg/m2) or above. Their status, with respect to chronic diseases, and their anthropometric parameters were documented. Results: The total number of patients was 10,121, with a mean age of 45.2 ± 13.92. Of these, 7222 (71.35%) were female. The prevalence of type 2 diabetes mellitus (T2DM), hypertension (HT), dyslipidemia (DL), coronary artery disease (CAD), obstructive pulmonary disease (OPD), obstructive sleep apnea syndrome (OSAS), and fatty liver disease (FLD) was found to be 35.01%, 78.19%, 12.37%, 10.32%, 5.88%, and 75.12%, respectively. A subsequent analysis of the prevalence of these diseases by region revealed a statistically significant variation between regions (p < 0.001 for all regions). Conclusions: This study represents a substantial contribution to the existing body of knowledge in this field, particularly with regard to the identification of the current chronic disease rate of obese patients in Türkiye.

7 November 2022 in Nutrition and Cancer
Verified
Journal Article
Closed access
UAUnal Atas
Unal Atas
HSHasan Sozel
Hasan Sozel
UIUtku Iltar
Utku Iltar
OYOrhan Kemal Yucel
Orhan Kemal Yucel
OSOzan Salim
Ozan Salim
LULevent Undar
Levent Undar
The prognostic value of the geriatric nutritional risk index (GNRI) is not clear in patients with diffuse large B-cell lymphoma (DLBCL). This study was designed to analyze the GNRI in DLBCL patients and to investigate its prognostic value in DLBCL. The archive records of DLBCL patients between 2008 and 2020 at the Akdeniz University Hospital were retrospectively analyzed. A total of 206 patients with DLBCL were recruited and classified into two GNRI-based groups based on nutrition status. The GNRI cut off value was determined by ROC analysis. In the univariate Cox regression analysis for overall survival (OS), age, lactate dehydrogenase, B symptoms, infiltration of bone marrow, and the GNRI were determined as prognostic factors for mortality. The OS of patients with a GNRI ≤104.238 was significantly lower than that of patients with a GNRI >104.238 (p = 0.001). The progression-free survival (PFS) of patients with GNRI ≤104.238 was significantly lower compared to the patients with GNRI >104.238 (p = 0.010). Based on the results of the present study with a relatively large hospital-based cohort, the GNRI can be recommended for use as an independent prognostic marker for OS and PFS in patients with DLBCL.

9 August 2021 in Irish Journal of Medical Science (1971 -)
Verified
Journal Article
Closed access
PDF file
FYFatih Yılmaz
Fatih Yılmaz
HSHasan Sozel
Hasan Sozel
MKMeryem Keleş
Meryem Keleş
ÜYÜstün Yılmaz
Üstün Yılmaz

13 July 2020 in Journal of Oncology Pharmacy Practice
Verified
Journal Article
Closed access
PDF file
HSHasan Sozel
Hasan Sozel
FYFatih Yilmaz
Fatih Yilmaz
Introduction: The use of bisphosphonates is increasing, for treatment of hypercalcemia and pain in cancer, and post-menopausal osteoporosis and also to decrease the risk of skeletal morbidity in multiple myeloma and metastatic breast cancer. Case report: A single dose of zoledronic acid was administered for hypercalcemia in a 54-year-old woman breast cancer patient with extensive bone metastasis. After the first dose, the patient developed symptomatic hypocalcemia. Management and outcome: Simultaneous hypocalcemia, hypophosphatemia, and vitamin D deficiency were detected in the patient. In the symptomatic process, intravenous, then oral replacement was performed. Discussion: There is a need for taking precautionary measures such as vitamin D, serum phosphorus and, calcium monitoring and supplementation to prevent life-threatening complications, such as symptomatic hypocalcemia, especially in populations with vitamin D deficiency like ours.