Testing ibrutinib and obinutuzumab as first treatment for chronic lymphocytic leukemia

Who can take part

• Age >=18 years
• Diagnosis of chronic lymphocytic leukemia (CLL) or small lymphocyte lymphoma (SLL) according to iwCLL diagnostic criteria
• Previously untreated active disease requiring treatment according to iwCLL criteria
• ECOG PS 0 or 1
• Lymph node disease measurable (longest diameter> 1.5 cm) by CT
• Adequate blood count defined as: Absolute neutrophil count (ANC)> 750 cells / μL (750 cells / mm3 or 0.75 x 109 / L), Platelet count> 30,000 / μL (30,000 cells / mm3 or 30 x 109 / L), Hemoglobin> 8.0 g / dL
• Adequate liver and kidney function defined as: Serum aspartate transaminase (AST) or alanine transaminase (ALT) =3.0 x upper limit of normal (ULN) , Estimated Creatinine Clearance (CrCl) =30 mL / min (Cockcroft-Gault), Bilirubin =1.5 x ULN (unless increased bilirubin is due to Gilbert's syndrome or of non-hepatic origin)
• Prothrombin time (PT) / International normal ratio (INR) <1.5 x ULN and PTT (activated partial thromboplastin time [aPTT]) <1.5 x ULN (unless abnormalities are related to coagulopathy or bleeding disorder)

Who cannot take part

• Any prior therapy (including but not limited to chemotherapy, targeted therapy, immunomodulatory therapy, radiotherapy, and / or monoclonal antibody) used to treat CLL or SLL
• Concomitant use of warfarin or other vitamin K antagonists
• Major surgery within 4 weeks of the first dose of study drug
• History of stroke or intracranial haemorrhage within 6 months prior to enrollment
• History of other malignancies, except: Malignant tumor treated with curative intent and with no known active disease present for =3 prior to first dose of study drug and deemed low risk of recurrence by treating physician, Malignant skin neoplasm not adequately treated or lentigo maligna with no evidence of disease, Adequately treated carcinoma in situ with no evidence of disease
• Known or suspected history of Richter's transformation
• Known hypersensitivity to one or more study drugs
• Known bleeding disorders (eg von Willebrand disease or haemophilia)
• Known history of human immunodeficiency virus (HIV) or active hepatitis C virus (HCV) or hepatitis B virus (HBV) infection. Individuals who are positive for hepatitis B core antibody, hepatitis B surface antigen (HBsAg), or hepatitis C antibody must have a negative polymerase chain reaction (PCR) result before enrollment. Those who test positive for PCR will be excluded
• Inability to swallow capsules / tablets or malabsorption syndrome, any disease that significantly affects gastrointestinal function, or resection of the stomach or small intestine, symptomatic inflammatory bowel disease or ulcerative colitis, or partial or complete bowel obstruction
• Patients with del (17p) and / or TP53 mutation according to centralized laboratory assessment