IL6 and chronic kidney disease: Our study confirms that the mortality predictors for hospitalized COVID-19 patients include older age, co-morbidities (cerebrovascular disease and chronic kidney disease) and severity, signs of severe clinical presentation (confusion, dyspnea, fatigue, low oxygen saturation, low mean arterial pressure, high respiratory rate, and high pulse rate), and high inflammatory response (CRP, interleukin-6, total lymphocyte and total neutrophil count).