About this trial
This is an investigator-initiated, open-label, single-arm study to determine safety and preliminary efficacy of NK510 for the treatment of patients with refractory systemic lupus erythematosus (SLE) in China.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
18 to 70 years old, male or female.
A diagnosis of SLE according to the 2019 EULAR (European League Against Rheumatism)/ACR (American College of Rheumatology).
The subject voluntarily participates in this clinical study and signs the Informed Consent Form (ICF).
Before screening, the subject must have received glucocorticoid combined with immunosuppressants and/or biological agents for at least 2 months, with a stable dose for more than 2 weeks, but the disease remains active; within 7 days before lymphodepleting conditioning, the blood routine test must meet the following requirements: absolute neutrophil count (ANC) ≥ 1.5×10⁹/L; hemoglobin (Hb) ≥ 80g/L; platelet count (PLT) ≥ 50×10⁹/L.
Disqualifiers
Patients with active lupus nephritis.
Those with allergies to the study drug or other medications used in the study protocol.
Those with any of the following conditions: ① Having received autologous/allogeneic hematopoietic stem cell transplantation within 3 months; ② Having received ultraviolet irradiation therapy within 6 weeks; ③ Having received biologic agent therapy (excluding other medications used in the study protocol) within 4 weeks or 3 half-lives (whichever is longer); ④ Having undergone major surgery or received live vaccines within 4 weeks; ⑤ Having received experimental treatment (except for definite placebo control groups) within 4 weeks.
Those with other active, known, or suspected autoimmune diseases.
Trial design
Single group
Treatments tested in this trial
NK510 : allogeneic genetic modified NK
DrugNK510 is an allogeneic genetic modification of NK cell. NK510 will be administered at a dose of 4x10\^7 NK/kg, 8x10\^7 NK/kg and 1.2x10\^8 NK/kg by a dose-escalation design and administered IV.
Treatment groups
Trial outcomes
Primary outcomes
Response rate for SLE response index 4 (SRI4)
SRI4 response defined as a reduction of ≥4 points on SLEDAI-2000, no new domain A scores and no more than 1 new domain B score on BILAG 2004, and no deterioration in PGA (\<0.3 point increase).
Incidence of treatment-related adverse events
This is to measure safety and tolerability of NK510
Dose-limiting toxicity (DLT) rate
This is to measure the dose-limiting toxicity of NK510
Secondary outcomes
Number of subjects who achieved lupus low disease activity state (LLDAS)
Low lupus disease activity was defined as SLEDAI-2K ≤ 4 points; no major organ system activity, no active hemolytic anemia or gastrointestinal involvement, and no new disease activity manifestations compared with the previous disease assessment; PGA score ≤ 1 point, daily prednisone equivalent dose ≤ 7.5 mg/day, with the permission of using maintenance doses of antimalarials and immunosuppressants (including biological agents).
Number of participants who achieved clinical remission of SLE
Clinical remission of SLE was defined by DORIS SLE remission criteria.
The change of SLEDAI-2000(Systemic lupus erythematosus disease activity index 2000) scores
The change of SLEDAI-2000 score (from 0 to 105 points) will be compared to baseline.
Changes of autoantibody of SLE from baseline
Autoantibody include anti-dsDNA, anti-nuclear antibody, ANA, anti-Sm antibody, and complement C3, C4.
Locations
Sponsors and contacts
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Base Therapeutics (Shanghai) Co., Ltd.
Lead sponsor
The First Affiliated Hospital of Anhui Medical University
Collaborator
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