Title
Phase I Study of Subcutaneous Ocaratuzumab in Patients With Previously Treated CD20+ B-Cell Malignancies
A Phase I Study of Subcutaneous Ocaratuzumab (Fab- and Fc-engineered Anti-CD20 Monoclonal Antibody) in Patients With Previously Treated CD20+ B-Cell Malignancies
Phase
Phase 1Lead Sponsor
Mentrik Biotech, LLCStudy Type
InterventionalStatus
Unknown statusIndication/Condition
Previously Treated CD20+ B-cell MalignanciesIntervention/Treatment
ocaratuzumab ...Study Participants
9Ocaratuzumab is a third-generation, fully humanized IgG1 monoclonal antibody (mAb) targeting the CD20 surface marker on normal and malignant B lymphocytes. It has been optimized for an increased binding for CD20 and an enhanced antibody dependent cell medicated cytotoxicity (ADCC) effector function.
A previous phase I/II study of intravenously (IV) administered ocaratuzumab in refractory/relapsed follicular lymphoma patients has concluded that ocaratuzumab is safe and well-tolerated at doses up to 375mg/ m2 weekly for four weeks.
In this proposed phase I study, ocaratuzumab will be administered subcutaneously to patients with previously treated CD20+ B-cell malignancies. Three dose levels (40 mg weekly x 4 doses, 80 mg weekly x 4 doses, and 80 mg weekly x 8 doses) will be investigated for safety, tolerability, pharmacokinetic, and pharmacodynamic analyses.
Inclusion Criteria: Age >18 years; Histologically confirmed diagnosis of a CD20+ B-cell malignancy; Received at least one prior treatment regimen;historically documented CD20-positivity is acceptable; Appropriate for single agent study drug therapy as prescribed by this protocol; ECOG performance status 0 to 2; Adequate hematopoietic, renal, and hepatic functions defined as: Absolute neutrophil count greater than 1000 /mm³ Platelet count greater than 75,000/mm³ Hemoglobin greater than 8.5 g/dL Serum creatinine ≤ 1.5x upper limit of normal AST, ALT, and total bilirubin ≤ 3x upper limit of normal; Ability to understand and the willingness to sign a written informed consent document; Life expectancy of 6 months or greater. Exclusion Criteria: Anti-CD20 therapy within 4 weeks of enrollment; Systemic chemotherapy or immunotherapy within 14 days of enrollment; Chronic systemic steroid therapy defined as prednisone or equivalent 10 mg/day or greater; Systemic cytotoxic or immunosuppressive therapy to be administered concomitantly while participating on this study; Active infection, chronic or severe infection requiring ongoing antimicrobial therapy. Positivity for hepatitis B (defined as HepBs Antigen +), hepatitis C (defined as HepC Antibody +), or HIV; HIV positive patients on antiretroviral therapy will be excluded; History of allergic reactions attributed to compounds of similar chemical or biologic composition; Significant cardiac disease (New York Heart Association classes III or IV) or unstable angina despite medication; Women who are pregnant or breast-feeding; Women of child bearing potential who are unwilling to use effective contraception for the duration of the study drug administration and 6 months after final dose of drug is administered; Psychiatric illness/social situations that would limit compliance with study requirements; Participation in other investigational studies while enrolled on this trial.