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Clinical Trial Summary

This is a Phase II, single-arm, multicentre study of Daratumumab (16mg/kg IV route) in adult patients with Light-Chain (AL) Amyloidosis who are not in VGPR or better after previous treatment. A sample size of 40 patients who meet all eligibility criteria will be enrolled to receive study treatment. Patients will receive treatment until either disease progression or toxicity has occurred with a maximum planned of six 28-day cycles. Daratumumab will be administrated every week for the first 2 cycles then. every 2 weeks from cycle 3 through cycle 6. Patients will also receive best supportive care (BSC) to mitigate Daratumumab side-effects, and to address underlying Amyloidosis, including blood product transfusions, antimicrobials, and (as appropriate) growth factors including granulocyte colony-stimulating factors for neutropenia, erythropoietin for anaemia, and/or transfusions for thrombocytopenia


Clinical Trial Description

Systemic AL amyloidosis is a rare disease caused by the deposition of misfolded monoclonal immunoglobulin free light chains (FLC) in various tissues and organs. It is usually associated with a clonal plasma cell dyscrasia with a low tumour burden. Treatment of AL amyloidosis relies mainly on chemotherapy aimed at suppressing the underlying plasma cell clone secreting monoclonal FLC. The organ responses and the survival are greatly influenced by the degree of hematological response evaluated by the decrease in serum FLC that has been the principal endpoint in recent trials in AL amyloidosis. The goal of treatment is to reach at least a very good partial response (VGPR) defined as a difference between the involved FLC and the normal <40 mg/l. Over the last 2 years, Daratumumab, a novel, high-affinity, therapeutic, human monoclonal antibodies (mAb) that specifically recognizes the CD38 epitope has emerged as a breakthrough targeted therapy for patients with myeloma. Taking into account that, in 90% of AL patients, the monoclonal cells producing amyloidogenic FLC are Cluster of Differentiation 38 (CD38) expressing plasma cells Daratumumab should be a promising treatment in AL amyloidosis. The study will consist of 4 steps: - A 21 day screening period This period start with screening visit which may occurs up to 21 days before the first study drug administration. After signature of the informed consent form, procedures will be performed to ensure patient meet all inclusion/exclusion criteria and document health status to receive study treatment. These assessments will include quality of life questionnaires - A treatment period Patient eligible to enter the study will receive 6 cycles of 28 days of intra venous Daratumumab. During cycles 1 and 2, Daratumumab will be administered weekly at days 1, 8, 15, and 22 then from cycles 3 to 6, Daratumumab will be administered every two weeks at days 1 and 15. Patient will have assessments at the ignition of a new cycle to document haematological and organs response and intra cycle to watch for toxicities. - An end of study visit (when PD or unacceptable adverse events occurs, or planned end of study visit). Study procedures will be performed at 28 days (± 15) after the last dose of study medication for all patients, including early termination patients. - Followup period After treatment discontinuation, followup will be made to the patient every 3 months for at least 1 year to inquire about the patient's hematological and organ status, general health, and information on any new medical events. DOSING REGIMEN Daratumumab. Six 28-day cycles, 16 mg/kg administered by IV route, During cycle 1 and 2, Daratumumab will be administered weekly at days 1, 8, 15, and 22 For cycles 3 to 6, Daratumumab will be administered every other week at days 1 and 15 ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02816476
Study type Interventional
Source University Hospital, Limoges
Contact
Status Completed
Phase Phase 2
Start date September 2016
Completion date October 2020

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