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A Phase 3, Randomized, Double-blind, Placebo-Controlled, Efficacy and Safety Study of HBS-301 in Participants with Narcolepsy Followed by an Open-label Extension

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-523821-17-00
Enrollment
48
Registered
2026-08-25
Start date
Unknown
Completion date
Unknown
Last updated
2026-08-26

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

Conditions

narcolepsy

Brief summary

Change in severity of EDS as measured by the ESS from Baseline to the end of the Double-blind Treatment Period

Detailed description

1. WRC at the end of the Double-blind Treatment Period in participants with an CCI weeks during Screening, 2. Change in sleepiness/wakefulness as measured by the MWT from Baseline to the end of the Double-blind Treatment Period, 3. Zmiana w CCI mierzona za pomocą CCI od wizyty wyjściowej do zakończenia okresu leczenia prowadzonego metodą podw. ślepej próby, 4. Change in severity of EDS as measured by the ESS from Baseline through CCI of the Titration Period, 5. Change in severity of EDS as measured by the ESS from Baseline through CCI of the Titration Period, 6. WRC at CCI of the Titration Period in participants with an CCI weeks during Screening, 7. WRC at CCI of the Titration Period in participants with an CCI weeks during Screening

Interventions

DRUGPlacebo will be provided as round
DRUGbiconvex enteric-coated tablets matching CCI of HBS-301. The CCI tablets are beige to light brown. The tablets are also debossed on 1 side with CCI.
DRUGbiconvex enteric-coated tablets matching CCI tablets of HBS-301. The CCI tablets are blue-green. he tablets are also debossed on 1 side with CCI.
DRUG"Placebo will be provided as round
DRUGbiconvex enteric-coated tablets matching CCI tablets of HBS-301. The CCI tablets are blue-violet. he tablets are also debossed on 1 side with CCI.

Sponsors

Harmony Biosciences Management Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Change in severity of EDS as measured by the ESS from Baseline to the end of the Double-blind Treatment Period

Secondary

MeasureTime frame
1. WRC at the end of the Double-blind Treatment Period in participants with an CCI weeks during Screening, 2. Change in sleepiness/wakefulness as measured by the MWT from Baseline to the end of the Double-blind Treatment Period, 3. Zmiana w CCI mierzona za pomocą CCI od wizyty wyjściowej do zakończenia okresu leczenia prowadzonego metodą podw. ślepej próby, 4. Change in severity of EDS as measured by the ESS from Baseline through CCI of the Titration Period, 5. Change in severity of EDS as measured by the ESS from Baseline through CCI of the Titration Period, 6. WRC at CCI of the Titration Period in participants with an CCI weeks during Screening, 7. WRC at CCI of the Titration Period in participants with an CCI weeks during Screening

Outcome results

None listed

Source: EU CTIS · Data processed: Aug 27, 2026