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Phase 2 Study to Assess Efficacy & Safety of WP1302 Prevent Relapse of MMI w/Draw in Subj. w/ Graves' dz

NCT06240455 · Status: SUSPENDED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 176

Last updated 2025-05-08

No results posted yet for this study

Summary

This is a Phase 2, double-blind, placebo controlled, Methimazole (MMI) withdrawal study in subjects with Graves' disease. The study consists of up to 5 periods: a screening period of up to 2 weeks; a WP1302 or placebo titration with Methimazole period of 12 weeks; a Full dose of WP1302 or placebo with Methimazole tapering period of 26 weeks; a follow-up period of 4 weeks; and an extended follow-up period of 6 months.

After screening, eligible subjects will be randomized to treatment at a ratio (stratified by size of goiter \[grade 0 or 1; grade 2\], WHO classification) of 1:1:1:1 to either any group of Methimazole with WP1302 at a dose of 400 μg, 800 μg, or 1200 μg, or the group of Methimazole with placebo.

All the subjects will subsequently be enrolled in an extended safety follow-up period for an additional 6 months. Subjects who remain euthyroid will continue to be monitored for efficacy during the long-term follow-up.

Conditions

  • Graves Disease

Interventions

DRUG

WP1302

Each arm will be treated with methimazole. During the MMI tapering period, commences the MMI weaning by reducing the original dosage by 50%. This adjusted dose is to be administered over a two-week duration. Continue this dose reduction in the subsequent 2-week durations until achieving a dose of 2.5 mg/day or lower. Upon reaching this threshold, MMI is to be discontinued (withdrawal).

DRUG

WP1302 placebo

Each arm will be treated with methimazole. During the MMI tapering period, commences the MMI weaning by reducing the original dosage by 50%. This adjusted dose is to be administered over a two-week duration. Continue this dose reduction in the subsequent 2-week durations until achieving a dose of 2.5 mg/day or lower. Upon reaching this threshold, MMI is to be discontinued (withdrawal).

COMBINATION_PRODUCT

methimazole

Each arm will be treated with methimazole. During the MMI tapering period, commences the MMI weaning by reducing the original dosage by 50%. This adjusted dose is to be administered over a two-week duration. Continue this dose reduction in the subsequent 2-week durations until achieving a dose of 2.5 mg/day or lower. Upon reaching this threshold, MMI is to be discontinued (withdrawal).

Sponsors & Collaborators

  • Worg Biotherapeutics Inc.

    lead OTHER

Principal Investigators

  • Dylan Lee, MD · Worg Biotherapeutics Inc.

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-03-31
Primary Completion
2029-03-31
Completion
2030-09-30
FDA Drug
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06240455 on ClinicalTrials.gov