The Prognostic Significance of Soluble Urokinase Plasminogen Activator Receptor in Acute Myeloid Leukemia

Objective: The soluble urokinase plasminogen activator receptor (suPAR) is a soluble form of the urokinase plasminogen activator receptor expressed in various immune and cancer cells. The levels of suPAR have been demonstrated to correlate with prognosis in various cancers. This study was intended to investigate serum suPAR levels and their effect on prognosis in patients with acute myeloid leukemia (AML). Materials and Methods: Thirty newly diagnosed patients with AML and 29 healthy individuals were enrolled. Serum suPAR levels were analyzed by enzyme-linked immunosorbent assay. Results: Serum suPAR levels were significantly higher in patients with AML than in healthy individuals (9±5.9 ng/mL and 2.4±1.4 ng/mL, respectively; p<0.001). Positive correlation was determined between suPAR levels and white blood cell counts (p<0.01). Serum suPAR levels were lower in patients who achieved complete response than in patients not achieving complete response (5.5±2.2 ng/mL and 12±6.6 ng/mL, respectively; p<0.001). The median overall survival was longer in patients with serum suPAR levels below 6.71 ng/mL than in those with serum suPAR levels above 6.71 ng/mL (12.6±13.2 months and 1.71±0.6 months, respectively; p=0.02). Multivariate Cox regression analysis showed that suPAR had independent prognostic value (95% confidence interval: 1.029-6.259; p<0.05) in AML. Conclusion: Serum suPAR levels can be used as a prognostic marker in AML

Serum carbonic anhydrase I and II autoantibodies in patients with chronic lymphocytic leukaemia

Demir, Selim/0000-0002-1863-6280;WOS: 000456093400006PubMed: 30588172Cancer is the second most important cause of mortality, and millions of people either have or have had the disease. Leukaemia is one of the most common forms of cancer. Autoantibodies that have developed against the organism's self-antigens are detected in the sera of subjects with cancer. in recent years carbonic anhydrase (CA) autoantibodies have been determined in some autoimmune diseases and carcinomas, but the mechanisms underlying this immune response have not yet been fully explained. the purpose of this study was to determine CA I and II autoantibodies in subjects with chronic lymphocytic leukaemia (CLL) and to provide a novel perspective regarding the autoimmune basis of the disease. Autoantibody levels were investigated using enzyme-linked immunosorbent assay (ELISA) in serum samples from 37 patients with CLL and 37 healthy peers. Anti-CA I titres in the CLL group were significantly higher compared with the control group (p = 0.0001). However, there was no significant difference between CLL and control groups in terms of anti-CA II titres (p = 0.278). the prevalences of CA I and II autoantibodies in patients with CLL in this study were 27% and 24.3%, respectively. Our results suggest that these autoantibodies may be involved in the pathogenesis of CLL. More extensive studies are now needed to reveal the entire mechanism

Akut Miyeloid Lösemi Hastalarında Karbonik Anhidraz I ve II Otoantikorları

Amaç: Kanser, dünyadaki başlıca ölüm nedenlerinden birisi olup, küresel bir toplum sağlığı sorunudur. Organizmanın kendi antijenlerine karşı gelişen otoantikorlar pek çok kanser hastasının serumunda tespit edilmiştir. Son yıllarda karbonik anhidraz (KA) I ve II otoantikorlarının varlığı bazı otoimmün hastalıklarda ve kanser türlerinde gösterilmiştir, ancak bu immün yanıtın altında yatan mekanizmalar henüz açıklanabilmiş değildir. Bu çalışmanın amacı, akut miyeloid lösemili (AML) kişilerde, KA I ve II otoantikorlarının varlığını değerlendirmek ve hastalığın otoimmün temeline dair yeni bir bakış açısı sağlamaktır. Gereç ve Yöntemler: Otuz hasta ve 30 sağlıklı kontrolden elde edilen serum örneklerinde anti-KA I ve II antikor düzeyleri ELISA yöntemiyle belirlendi. Bulgular: AML grubundaki anti-KA I ve II antikor düzeyleri kontrol grubu (p= sırasıyla 0,0001 ve 0,018) ile karşılaştırıldığında anlamlı derecede yüksek bulundu. Ayrıca KA I ve II otoantikor seviyeleri arasında güçlü bir pozitif korelasyon saptandı (r=0,613; p=0,0001). Sonuç: Elde edilen sonuçlar bu otoantikorların AML patogenezinde rolü olabileceğini düşündürmektedir. Kesin mekanizmayı ortaya çıkarabilmek için daha kapsamlı çalışmalar gereklidir.Amaç: Kanser, dünyadaki başlıca ölüm nedenlerinden birisi olup, küresel bir toplum sağlığı sorunudur. Organizmanın kendi antijenlerine karşı gelişen otoantikorlar pek çok kanser hastasının serumunda tespit edilmiştir. Son yıllarda karbonik anhidraz (KA) I ve II otoantikorlarının varlığı bazı otoimmün hastalıklarda ve kanser türlerinde gösterilmiştir, ancak bu immün yanıtın altında yatan mekanizmalar henüz açıklanabilmiş değildir. Bu çalışmanın amacı, akut miyeloid lösemili (AML) kişilerde, KA I ve II otoantikorlarının varlığını değerlendirmek ve hastalığın otoimmün temeline dair yeni bir bakış açısı sağlamaktır. Gereç ve Yöntemler: Otuz hasta ve 30 sağlıklı kontrolden elde edilen serum örneklerinde anti-KA I ve II antikor düzeyleri ELISA yöntemiyle belirlendi. Bulgular: AML grubundaki anti-KA I ve II antikor düzeyleri kontrol grubu (p= sırasıyla 0,0001 ve 0,018) ile karşılaştırıldığında anlamlı derecede yüksek bulundu. Ayrıca KA I ve II otoantikor seviyeleri arasında güçlü bir pozitif korelasyon saptandı (r=0,613; p=0,0001). Sonuç: Elde edilen sonuçlar bu otoantikorların AML patogenezinde rolü olabileceğini düşündürmektedir. Kesin mekanizmayı ortaya çıkarabilmek için daha kapsamlı çalışmalar gereklidir

Autoantibodies Against Carbonic Anhydrase I and II in Patients with Acute Myeloid Leukemia

Objective: Cancer, one of the principal causes of death, is a global social health problem. Autoantibodies developed against the organism’s self-antigens are detected in the sera of subjects with cancer. In recent years carbonic anhydrase (CA) I and II autoantibodies have been shown in some autoimmune diseases and carcinomas, but the mechanisms underlying this immune response have not yet been explained. The aim of this study was to evaluate CA I and II autoantibodies in patients with acute myeloid leukemia (AML) and to provide a novel perspective regarding the autoimmune basis of the disease. Materials and Methods: Anti-CA I and II antibody levels were investigated using ELISA in serum samples from 30 patients with AML and 30 healthy peers. Results: Anti-CA I and II antibody titers in the AML group were significantly higher compared with the control group (p=0.0001 and 0.018, respectively). A strong positive correlation was also determined between titers of anti-CA I and II antibodies (r=0.613, p=0.0001). Conclusion: Our results suggest that these autoantibodies may be involved in the pathogenesis of AML. More extensive studies are now needed to reveal the entire mechanism

Impact of CALR and JAK2V617F Mutations on Clinical Course and Disease Outcomes in Essential Thrombocythemia: A Multicenter Retrospective Study in Turkish Patients

Objective: In this study, we investigated the effects of calreticulin (CALR) and JAK2V617F mutational status on clinical course and disease outcomes in Turkish patients with essential thrombocythemia (ET). Materials and Methods: Seventeen centers from Türkiye participated in the study and CALR- and JAK2V617F-mutated ET patients were evaluated retrospectively. Results: A total of 302 patients were included, of whom 203 (67.2%) and 99 (32.8%) were JAK2V617F- and CALR-positive, respectively. CALR-mutated patients were significantly younger (51 years vs. 57.5 years, p=0.03), with higher median platelet counts (987x109/L vs. 709x109/L, p<0.001) and lower median hemoglobin levels (13.1 g/dL vs. 14.1 g/dL, p<0.001) compared to JAK2V617F-mutated patients. Thromboembolic events (TEEs) occurred in 54 patients (17.9%), 77.8% of which were arterial. Compared to CALR mutation, JAK2V617F was associated with a higher risk of thrombosis (8.1% vs. 22.7%, p=0.002). Rates of transformation to myelofibrosis (MF) and leukemia were 4% and 0.7%, respectively, and these rates were comparable between JAK2V617F- and CALR-mutated cases. The estimated overall survival (OS) and MF-free survival of the entire cohort were 265.1 months and 235.7 months, respectively. OS and MF-free survival durations were similar between JAK2V617F- and CALR-mutated patients. Thrombosis-free survival (TFS) was superior in CALR-mutated patients compared to JAK2V617F-positive patients (5-year TFS: 90% vs. 71%, respectively; p=0.001). Age at diagnosis was an independent factor affecting the incidence of TEEs. Conclusion: In our ET cohort, CALR mutations resulted in higher platelet counts and lower hemoglobin levels than JAK2V617F and were associated with younger age at diagnosis. JAK2V617F was strongly associated with thrombosis and worse TFS. Hydroxyurea was the most preferred cytoreductive agent for patients with high thrombosis risk