A Phase 3 Trial of DR10624 Versus Placebo in Patients With Severe Hypertriglyceridemia

Trial statusNot yet recruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexAll
Age18+
SponsorZhejiang Doer Biologics Co., Ltd.

About this trial

This is a multicenter, randomized, double-blind, placebo-controlled Phase 3 trial for adults with severe hypertriglyceridemia whose lipid levels remain uncontrolled under standard Icosapent Ethyl background treatment plus lifestyle management. Eligible participants complete a screening run-in period, then randomize equally to three treatment groups: two active DR10624 subcutaneous injection groups and one placebo group. All subjects maintain fixed oral background lipid therapy throughout long-term double-blind treatment, followed by a short safety follow-up period. The primary objective is to evaluate the triglyceride-lowering effect of DR10624 versus placebo. Secondary assessments include other lipid indicators, liver fat content, overall safety, and anti-drug antibody status. Independent committees monitor interim data and adjudicate key clinical events to ensure participant safety.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Age ≥18 years, male or female; BMI 19.0-45.0 kg/m², body weight ≥50 kg at screening.

Fasting triglyceride (TG) range 5.65-22.60 mmol/L: single screening lab result meets range, plus average of two separate fasting TG tests (interval >1 week) within same range prior to randomization.

Stable lipid-lowering medications per local guidelines if on statin, cholesterol absorption inhibitor or PCSK9 inhibitor (minimum stable dose duration as required by drug class).

Females of childbearing potential agree effective contraception from ICF signing to 2 months post last dose; male participants agree contraception and no sperm donation for 3 months post last dose.

Disqualifiers

Confirmed hereditary lipid disorders (Fredrickson Type 1/3, Apo C-II deficiency).

Significant weight loss or planned weight reduction during study.

Severe chronic liver, renal or advanced cardiac disease.

Uncontrolled diabetes or hypertension with severe complications.

Trial design

Design model

Parallel

Treatments tested in this trial

  • DR10624 Subcutaneous Injection

    Drug

    Weekly self-administered subcutaneous investigational biologic product, administered via autoinjector pen following standardized titration schedule throughout double-blind treatment phase.

  • Icosapent Ethyl Oral Capsule

    Drug

    Fixed daily oral omega-3 lipid-lowering background therapy, maintained at consistent stable dose for all participants across all three study arms for full trial duration.

  • Matching Placebo Subcutaneous Injection

    Drug

    Visually identical placebo autoinjector pen with inactive formulation, administered weekly following the identical titration timeline as active DR10624 groups to preserve double-blind status.

Treatment groups

378 Participants
are divided into 3 treatment groups
Group A: Experimental Group 1: Weekly DR10624 InjectionExperimental treatment 2 interventions
Group B: Experimental Group 2: Weekly DR10624 InjectionExperimental treatment 2 interventions
Group C: Weekly Matching Placebo InjectionPlacebo comparator 2 interventions

Trial outcomes

Primary outcomes

1

Percentage change from baseline in average fasting serum triglyceride concentration at Week 26

Baseline TG defined as average value of Visit2, Visit3 and Visit4 fasting samples; Week26 TG defined as average of Week24 and Week26 fasting laboratory results; all participants receive continuous Icosapent ethyl 2g twice daily as background lipid-lowering treatment.

Time frame
Baseline up to Week 26 of double-blind treatment period

Secondary outcomes

1

Percentage change from baseline in ApoC3 at Week 26

Fasting serum ApoC3 levels are measured via central laboratory validated biochemical assay. Percent change from baseline will be evaluated at Week 26 in subjects on stable twice-daily 2 g icosapent ethyl background lipid-lowering therapy throughout double-blind treatment.

Time frame
Baseline to Week 26 of double-blind treatment
2

Percent change from baseline LFC measured by MRI-PDFF Week26

Liver fat content is measured via centralized standardized MRI-PDFF scanning at baseline and Week 26. All scans are read by a blinded central imaging core laboratory. Subjects maintain stable twice-daily 2 g icosapent ethyl background lipid-lowering therapy during double-blind treatment. Relative percent change in LFC from baseline will be evaluated at Week 26.

Time frame
Baseline and Week 26
3

Cumulative incidence of adjudicated acute pancreatitis up to Week 64

All suspected acute pancreatitis cases are fully adjudicated by an independent Event Adjudication Committee (EAC) per pre-specified diagnostic criteria throughout the 64-week double-blind treatment phase. Cumulative proportion of participants with confirmed adjudicated acute pancreatitis will be summarized from randomization to Week 64.

Time frame
Randomization through Week 64 double-blind treatment period
4

Proportion of participants with treatment-emergent adverse events (TEAEs) throughout the study

All adverse events emerging from the first study drug injection until 4 weeks after the last injection are captured, coded by MedDRA and graded per pre-defined severity criteria. The percentage of participants experiencing any TEAE and the distribution of maximum TEAE severity will be summarized for the full safety observation window.

Time frame
First study drug injection through 4-week post-treatment safety follow-up

Other outcomes

1

Percentage change from baseline in serum DR10624 concentration quantified by validated central laboratory bioanalytical assay

Serum PK samples for DR10624 concentration measurement are collected at pre-specified time points from baseline through 4-week post-treatment safety follow-up. All samples are analyzed by a qualified central laboratory using a fully validated bioanalytical assay in accordance with the study protocol. Percentage change in serum DR10624 concentration relative to baseline will be evaluated in participants receiving stable twice-daily 2 g icosapent ethyl background lipid-lowering therapy.

Time frame
First study drug injection through 4-week post-treatment safety follow-up

Sponsors and contacts

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