A Study to Learn More About the Effects and Safety of JMT601 in Adults With Primary Membranous Nephropathy

Trial statusNot yet recruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexAll
Age18-80
SponsorShanghai JMT-Bio Inc.

About this trial

This study is a multicenter, randomized, controlled, open-label, Phase Ⅱ clinical study to evaluate the efficacy, safety, Pharmacokinetics characteristics, Pharmacodynamics effects, and immunogenicity of JMT601 in participants with primary membranous nephropathy.

The study has two parts. Part one is dose escalation part, and Part two is dose expansion part.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

The age range is between 18 and 80 years old, regardless of gender.

Diagnosed with primary membranous nephropathy by renal biopsy during the screening/induction period or within 24 months before screening. Pathological reports must be reviewed by the investigator prior to study drug administration.

The glomerular filtration rate (eGFR) estimated by CKD-EPI formula is ≥ 40ml/min/1.73m², or the endogenous creatinine clearance rate (CrCl) based on 24-hour urine examination is ≥ 40ml/min.

Participants taking angiotensin converting enzyme inhibitors/angiotensin II receptor antagonists must maintain a stable dose for at least 4 weeks before screening;

Disqualifiers

Secondary membranous nephropathy.

Diagnostic renal biopsy shows evidence of glomerular crescent formation, which suggests the diagnosis of other renal diseases or renal biopsy evidence of interstitial fibrosis/tubular atrophy in cortical area > 50%.

Uncontrolled blood pressure as judged by the investigator within the 3 months prior to screening.

Individuals with evidence of a ≥50% decrease in urine protein within the first 6 months before screening.

Trial design

Design model

Parallel

Treatments tested in this trial

  • JMT601 Injection

    Drug

    In accordance with the protocol

  • Rituximab

    Drug

    In accordance with the protocol

  • Cyclosporin Capsules

    Drug

    In accordance with the protocol

Treatment groups

156 Participants
are divided into 4 treatment groups
Group A: JMT601 (Part 1)Experimental treatment 1 intervention
Group B: Rituximab (Part 1)Active comparator 2 interventions
Group C: JMT601 (Part 2)Experimental treatment 2 interventions
Group D: Cyclosporin Capsules (part 2)Active comparator 2 interventions

Trial outcomes

Primary outcomes

1

Incidence of adverse events in Part 1

Time frame
Up to 24 weeks
2

Overall Remission Rate at week 52 in Part 2

Participants with overall remission are those achieving either complete remission or partial remission

Time frame
week 52

Secondary outcomes

1

Blood drug concentration of JMT-601 in Part 1

Time frame
week 24
2

Immunological remission in the anti-PLA2R antibody positive population in Part 1

Proportion of anti-PLA2R antibody-positive participants achieving immunological remission

Time frame
week 12, 24
3

Changes in anti-PLA2R antibody titers from baseline in anti-PLA2R antibody positive population in Part 1

Time frame
week 24
4

Overall Remission Rate in Part 1

Time frame
weeks 12, 24

Other outcomes

Locations

This trial has no locations.

Sponsors and contacts

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