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A Phase 3, Parallel-group Treatment, Blinded, Randomized, Placebo-controlled Study to Assess the Efficacy and Safety of Pegtibatinase Administered Subcutaneously in Addition to Standard of Care in Participants with Classical Homocystinuria due to Cystathionine Beta Synthase Deficiency (HARMONY)

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-504135-40-00
Enrollment
8
Registered
2026-04-27
Start date
Unknown
Completion date
Unknown
Last updated
2026-04-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Classical Homocystinuria

Brief summary

The change from baseline averaged over Week -3, Week -1, and Day 1 pre-dose in plasma tHcy levels averaged over Weeks 6 through 12 (6, 8, 10, and 12) in participants receiving standard of care and treated with pegtibatinase as compared to placebo

Detailed description

The change from baseline in plasma tHcy levels averaged post Week 12 (Weeks 16, 20, and 24) in participants receiving standard of care and treated with pegtibatinase as compared to placebo, The change from baseline in plasma Met levels averaged over Weeks 6 through 12 in participants receiving standard of care and treated with pegtibatinase as compared to placebo, The change from baseline in plasma Met levels averaged post Week 12 in participants receiving standard of care and treated with pegtibatinase as compared to placebo, The proportion of participants achieving tHcy <100 µM averaged over Weeks 6 through 12, among participants with tHcy ≥100 µM at baseline, The proportion of participants achieving tHcy <100 µM averaged post Week 12 among participants with tHcy ≥100 µM at baseline, The proportion of participants with tHcy <50 µM averaged over Weeks 6 through 12, The proportion of participants with tHcy <50 µM averaged post Week 12, The proportion of participants achieving tHcy reduction ≥35% from baseline averaged over Weeks 6 through 12, and averaged post Week 12, The proportion of participants achieving tHcy <100 µM and a ≥35% reduction from baseline averaged over Weeks 6 through 12, and averaged post Week 12 among participants with tHcy ≥100 µM at baseline, The proportion of participants with tHcy ≤15 µM averaged over Weeks 6 through 12, and averaged post Week 12

Interventions

DRUG0.9 % sodium chloride saline solution (NaCL)

Sponsors

Travere Therapeutics Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
0 Years to No maximum

Design outcomes

Primary

MeasureTime frame
The change from baseline averaged over Week -3, Week -1, and Day 1 pre-dose in plasma tHcy levels averaged over Weeks 6 through 12 (6, 8, 10, and 12) in participants receiving standard of care and treated with pegtibatinase as compared to placebo

Secondary

MeasureTime frame
The change from baseline in plasma tHcy levels averaged post Week 12 (Weeks 16, 20, and 24) in participants receiving standard of care and treated with pegtibatinase as compared to placebo, The change from baseline in plasma Met levels averaged over Weeks 6 through 12 in participants receiving standard of care and treated with pegtibatinase as compared to placebo, The change from baseline in plasma Met levels averaged post Week 12 in participants receiving standard of care and treated with pegtibatinase as compared to placebo, The proportion of participants achieving tHcy <100 µM averaged over Weeks 6 through 12, among participants with tHcy ≥100 µM at baseline, The proportion of participants achieving tHcy <100 µM averaged post Week 12 among participants with tHcy ≥100 µM at baseline, The proportion of participants with tHcy <50 µM averaged over Weeks 6 through 12, The proportion of participants with tHcy <50 µM averaged post Week 12, The proportion of participants achieving tHcy redu

Outcome results

None listed

Source: EU CTIS · Data processed: Apr 30, 2026