A Phase 1b Study to Evaluate the PK of CSL300 (Clazakizumab) in Chinese Subjects With End Stage Kidney Disease (ESKD)

Trial statusRecruiting
Trial phasePhase 1
Trial typeInterventional
Biological sexAll
Age18+
SponsorCSL Behring

About this trial

This is a phase 1b, partial-blind (Sponsor unblinded), randomized, multicenter, placebo-controlled study. The primary objective of this study is to evaluate the pharmacokinetics (PK) of CSL300 after single and multiple doses in Chinese participants with end stage kidney disease (ESKD) undergoing dialysis.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Participants has provided written informed consent and is willing and able to adhere to all protocol requirements.

Aged 18 or older, inclusive, at the time of providing written informed consent.

Diagnosis of ESKD undergoing maintenance dialysis for at least 12 weeks before Screening.

Disqualifiers

Exclusion related to risk of infection: concomitant use of systemic immunosuppressant agents, primary immunodeficiency, positive test for active tuberculosis (TB), history of latent TB without completion of full course of prophylactic treatment, evidence of human immunodeficiency virus infection during Screening, seropositivity for hepatitis B surface antigen or positive hepatitis B virus (HBV) DNA during Screening, seropositivity for hepatitis C virus ribonucleic acid during Screening, diagnosis of clinically significant active infection, history of / OR current invasive fungal infection OR other opportunistic infection OR recurrent cellulitis (defined as 2 or more episodes in the year prior to screening), administration of a live vaccine within 6 weeks of start of Screening, presence of urinary catheter, or evidence of wet gangrene or nonhealing ulcers.

Exclusion related to laboratory abnormalities: abnormal liver function tests, neutropenia, thrombocytopenia, or significant anemia.

Exclusion related to medical history: any life-threatening disease expected to result in death within 12 months (other than cardiovascular disease), evidence of active hepatic disease and / or moderate or severe hepatic impairment, recent unplanned hospitalization (< 30 days) prior to Screening, recent (< 3 months) major surgery or planned major surgery known at the time of Screening, poorly controlled hypertension, a present or previous (< 5 years) malignancy except for basal cell carcinoma, fully excised squamous cell carcinoma of the skin, or nonrecurrent (< 5 years of Screening) cervical carcinoma in situ, active or recent (< 30 days of Screening) clinically severe bleeding, a scheduled kidney transplant within 6 months of Screening, a history of anaphylaxis or hypersensitivity to CSL300 or any constituents of the product, or a history of demyelinating disorders.

Exclusion related to risk of gastrointestinal perforation: a history of GI perforation, inflammatory bowel disease (except fully excised ulcerative colitis), or peptic ulcer disease (< 12 months before Screening), a history of diverticular disease or diverticulitis (except if disease has been fully excised). An incidental finding of diverticulosis (presence of small diverticula) and no history of symptoms, complications, or any episodes requiring treatment may be eligible for the study based on investigator's judgment. However, any history of complications, inflammation, or infection suggestive of diverticulitis or diverticular disease is exclusionary, inflammatory bowel disease (ie, Crohn's disease, ulcerative colitis except if fully excised, or prior gastric bypass surgery.

Trial design

Design model

Parallel

Treatments tested in this trial

  • CSL300

    Biological/Vaccine

    CSL300 is a humanized anti-interleukin 6 (anti-IL-6) monoclonal antibody (mAb).

  • Placebo

    Other intervention

    Placebo is a solution for injection matching the excipient content and concentration of the CSL300 product, minus the active ingredient.

Treatment groups

24 Participants
are divided into 2 treatment groups
Group A: CSL300 (Clazakizumab)Experimental treatment 1 intervention
Group B: PlaceboPlacebo comparator 1 intervention

Trial outcomes

Primary outcomes

1

Area Under the Concentration-time (AUC) Curve of CSL300 Over 1 Dosing Interval After Multiple Doses (AUC0-tau,MD)

Time frame
Day 85 up to Day 113
2

Trough Concentration at Steady State (Ctrough,ss)

Time frame
Up to Day 141

Secondary outcomes

1

Number of Participants With Treatment Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Adverse Event of Special Interests (AESIs)

The following adverse events (AEs) are defined as AESIs: relevant infections (tuberculosis, herpes simplex virus, herpes zoster, human papillomavirus, human immunodeficiency virus, hepatitis B, hepatitis C, and invasive fungal infections), and demyelinating disorders.

Time frame
Up to Day 225 (End of Study [EoS])
2

Percentage of Participants With TEAEs, SAEs, and AESIs

The following AEs are defined as AESIs: relevant infections (tuberculosis, herpes simplex virus, herpes zoster, human papillomavirus, human immunodeficiency virus, hepatitis B, hepatitis C, and invasive fungal infections), and demyelinating disorders.

Time frame
Up to Day 225 (EoS)
3

Percentage of Participants With a Clinically Significant Change From Baseline in Laboratory Test Results

Laboratory assessments will include hematology parameters such as white blood cells (leukocytes), neutrophils, and platelets; chemistry evaluations including alanine aminotransferase (ALT), aspartate aminotransferase (AST), and total bilirubin; a lipid panel comprising total cholesterol, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, and triglycerides; and immunogenicity testing.

Time frame
At Baseline and up to Day 225 (EoS)
4

Number of Participants With Antidrug Antibodies

The detection of antibodies to CSL300 will be performed using a validated immunoassay method.

Time frame
At Days 1, 29, 85, and 169

Other outcomes

Sponsors and contacts

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