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Ikhwan Rinaldi,1 Resti Mulya Sari,2 Vanya Utami Tedhy,3 Kevin Winston3 1Division of Hematology and Medical Oncology, Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; 2Division of Hematology and Medical Oncology, Department of Internal Medicine, Dharmais National Cancer Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; 3Faculty of Medicine, Universitas Indonesia, Jakarta, IndonesiaCorrespondence: Ikhwan RinaldiDivision of Hematology and Medical Oncology, Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, 10430, IndonesiaTel +628111001758Email ikhwan.rinaldi@ui.ac.idIntroduction: Leukostasis is a medical emergency with high mortality which often occurs in acute myeloid leukemia patients with hyperleukocytosis. One of the therapies that can be used for leukostasis in acute myeloid leukemia is leukapheresis. However, whether leukapheresis can provide better survival benefit when compared with patients not receiving leukapheresis is still unclear. Hence, we aimed to evaluate the effect of chemotherapy plus leukapheresis combination versus chemotherapy only on 28-day survival of acute myeloid leukemia patients with leukostasis.Methods: This study was a dual-center retrospective cohort using secondary data from medical records collected from November 2018 to March 2019. Inclusion criteria were adult patients aged 18 years old or above, diagnosed with acute leukemia with hyperleukocytosis status defined by WBC count greater than 100,000/uL, and with symptoms of leukostasis. One-month survival analysis was conducted using Kaplan–Meier curve method. Univariate and multivariate analyses were then conducted using Cox proportional hazards model to obtain value of hazard ratio (HR) with a 95% confidence interval (CI).Results: A total of 38 patients were obtained for analysis. The median overall survival was 25 days (95% CI: 17.001– 32.999 days) in the chemotherapy only group and 20 days (95% CI: 1.497– 38.503) in the chemotherapy with leukapheresis group. The use of leukapheresis did not affect 28-day survival (HR: 1.140; 95% CI: 0.396– 3.283; p value: 0.809) and 7-day survival (HR: 1.073; 95% CI: 0.277– 4.152; p value: 0.919). In the multivariate analysis, age ≥ 60 years, blast percentage ≥ 90%, creatinine ≥ 1.4 mg/dL, and presence of disseminated intravascular coagulation were associated with worse 28-day survival.Conclusion: AML patients with leukostasis who received both chemotherapy and leukapheresis did not have better 28-day survival and 7-day survival when compared with patients receiving chemotherapy only. Old age, high blast percentage, high creatinine, and presence of disseminated intravascular coagulation were prognostic factors for worse 28-day survival.Keywords: leukemia, hyperleukocytosis, leukostasis, leukapheresis, chemotherapy, survival

Ikhwan Rinaldi,1 Rachmat Hamonangan,2 Mohamad Syahrir Azizi,3 Rahmat Cahyanur,1 Fadila Wirawan,4 Atikah Isna Fatya,4 Ageng Budiananti,4 Kevin Winston4 1Division of Hematology and Medical Oncology, Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, 10430, Indonesia; 2Department of Internal Medicine, PGI Cikini Hospital, Jakarta, Indonesia; 3Division of Cardiology, Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; 4Department of Internal Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, IndonesiaCorrespondence: Ikhwan RinaldiDivision of Hematology and Medical Oncology, Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, 10430, IndonesiaTel +62 811177997Email ikhwanrinaldi@gmail.comIntroduction: Patients with deep vein thrombosis (DVT) pose high morbidity and mortality risk thus needing fast and accurate diagnosis. Wells clinical prediction scores with D-dimer testing are traditionally used to rule out patients with low probability of DVT. However, D-dimer testing has a few limitations regarding its relatively low specificity. Neutrophil-lymphocyte ratio (NLR), a marker of inflammation, was found to increase in DVT. Hence, we aimed to evaluate the role of NLR for DVT diagnosis.Methods: Data were collected from medical records of patients with suspected DVT at Cipto Mangunkusumo National General Hospital during January–December 2014. Diagnosis of DVT was conducted using lower limb ultrasonography. Diagnostic values for NLR, D-dimer, and NLR + D-dimer were determined by receiver operating characteristic (ROC) analysis to obtain area under the curve (AUC), sensitivity, specificity, negative predictive value, and positive predictive values. Sensitivity and specificity analyses of NLR and D-dimer were also conducted based on Wells score and divided into groups of low and high probability of DVT.Results: The AUC values for NLR, D-dimer, and NLR + D-dimer were 72.6%, 70.4%, and 76.1%, respectively. The optimal cut-off value determined for NLR was 5.12 with sensitivity of 67.7%, specificity of 67.9%, PPV of 68.85%, and NPV of 64.91% in differentiating subjects with and without DVT. This study also found that D-dimer had sensitivity of 69.4%, specificity of 71.4%, PPV of 72.88%, and NPV of 67.8%. Meanwhile, the NLR + D-dimer combination had sensitivity of 66.1% and specificity of 72.6%. Multivariate analysis showed that NLR (OR: 2.636; 95% CI: 1.144– 6.076; p: 0.023) and D-dimer (OR: 4.175; 95% CI: 1.810– 9.633; p: 0.001) were associated with DVT.Conclusion: NLR value has wider AUC than D-Dimer and is relatively easier to obtain and does not require specific assay, thus enabling rapid evaluation of symptomatic patients suspected of having DVT. Adding NLR to D-dimer increased AUC to detect DVT. Therefore, NLR could serve as a complementary diagnostic tool for D-dimer to exclude DVT, especially in low clinical probability patients.Keywords: deep vein thrombosis, neutrophils lymphocyte ratio, NLR, inflammation, D-dimer