Conditions: Healthy
Keywords: interleukin-17 maximum tolerated dose novel monoclonal antibody
Allocation: NON_RANDOMIZED | Intervention model: SEQUENTIAL
Enrollment: 22
Healthy volunteers: yes

Brief summary:
This is an open label, phase 1, "3+3" dose escalating study of tolerability, safety, pharmacokinetics and immunogenicity of a single subcutaneous injection of the novel monoclonal antibody against human IL-17 - BCD-085. The study will enroll 37 healthy male volunteers.

Detailed description:
IL-17 is a new potential therapeutic target which plays important role in pathogenesis of several autoimmune disorders including psoriasis, rheumatoid arthritis, possibly - SLE and MS. BCD-085 is a novel humanized monoclonal antibody against human IL17 developed by JCS BIOCAD (Russia) which is now on the first step of clinical evaluation. BCD-085-1 study is the first-in-human clinical trial which is intended to evaluate tolerability, safety, pharmacokinetics and immunogenicity of BCD-085 when used as a single step-by-step escalating subcutaneous dose in healthy male volunteers. During this study it is expected to determine diapason of safety doses of BCD-085 (incl. MTD) which thereafter can be evaluated in phase 2 studies.

Arms:
arm 1: This cohort includes just one subject who will receive the maximum safe starting dose of BCD-085 (0.05 mg/kg) subcutaneously. If the dose limitating toxicity occurs within the first seven days after injection the study will be stopped. If there is no DLT within mentioned above period then Cohort no.2 is included. arm 2: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 0.05 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If 0 of the 3 subjects are observed to have DLT, the dose level is escalated one step for the next cohort no. 3 of 3 subjects, and the process continues as above. If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level. If none of these additional 3 patients show DLT, the dose level is escalated for the next Cohort no. 3. arm 3: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 0.25 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If 0 of the 3 subjects are observed to have DLT, the dose level is escalated one step for the next cohort no. 4 of 3 subjects, and the process continues as above. If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level. If none of these additional 3 patients show DLT, the dose level is escalated for the next Cohort no. 4. arm 4: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 0.825 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If 0 of the 3 subjects are observed to have DLT, the dose level is escalated one step for the next cohort no. 5 of 3 subjects, and the process continues as above. If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level. If none of these additional 3 patients show DLT, the dose level is escalated for the next Cohort no. 5. arm 5: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 1.25 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If 0 of the 3 subjects are observed to have DLT, the dose level is escalated one step for the next cohort no. 6 of 3 subjects, and the process continues as above. If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level. If none of these additional 3 patients show DLT, the dose level is escalated for the next Cohort no. 6. arm 6: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 1.75 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If 0 of the 3 subjects are observed to have DLT, the dose level is escalated one step for the next cohort no. 7 of 3 subjects, and the process continues as above. If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level. If none of these additional 3 patients show DLT, the dose level is escalated for the next Cohort no. 7. arm 7: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 2.25 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If 0 of the 3 subjects are observed to have DLT, the dose level is escalated one step for the next cohort no. 8 of 3 subjects, and the process continues as above. If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level. If none of these additional 3 patients show DLT, the dose level is escalated for the next Cohort no. 8. arm 8: This cohort includes 3 subjects who will receive the single subcutaneous injection of BCD-085 at a dose of 3.0 mg/kg.

If at least 2 subjects are observed to have DLT, this dose level is defined as the MTD (unless only 3 patients have been treated at that level, in which case it is the tentative MTD). If exactly 1 of the 3 subjects treated show DLT, 3 additional subjects are treated at the current dose level.

Interventions: intervention 1: humanized monoclonal antibody against human IL-17
Intervention descriptions: intervention 1: None

Protocol document: