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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT05655520




Registration number
NCT05655520
Ethics application status
Date submitted
9/12/2022
Date registered
19/12/2022
Date last updated
5/07/2024

Titles & IDs
Public title
A Study to Evaluate the Safety and Tolerability of SAGE-718 in Participants With Huntington's Disease
Scientific title
A Phase 3, Multicenter, Open-label Safety Study to Evaluate the Long-term Safety and Tolerability of SAGE-718 in Participants With Huntington's Disease
Secondary ID [1] 0 0
718-CIH-301
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Interstitial Lung Disease 0 0
Huntington's Disease 0 0
Condition category
Condition code

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Experimental: Multiple Ascending Dose (MAD) Arm 1 - Participants grouped into different cohorts will receive multiple ascending doses of VX-522 in treatment arm 1 (T1).
Comparator / control treatment
Control group

Outcomes

Eligibility
Key inclusion criteria
For all participants:

* Completed 718-CIH-201 (NCT05107128) or 718-CIH-202 (NCT05358821) studies or meet eligibility criteria for the de novo cohort.
* Agree to refrain from drugs of abuse for the duration of the study and from alcohol during the 48 hours preceding each study visit.
* Be willing to invite a study partner, if available, who is reliable, competent, and at least 18 years of age to participate in the study.
* Be able to travel to the study center, and, judged by the investigator, is likely to be able to continue to travel to the study center to complete study visits for the duration of the study.

Additional inclusion criteria for the de novo cohort (Cohort 3):

* Be at least 25 years old, but not older than 65 years of age at Screening.

* Genetically confirmed disease with cytosine-adenine-guanine (CAG) expansion =40
* No features of juvenile HD
* CAG-Age-Product (CAP) score =90, as calculated using the CAP formula: AGE × (CAG - 30) / 6.49.
* At screening, scores of either: a) Unified Huntington's Disease Rating Scale (UHDRS) -Total Functional Capacity (TFC)=13 and Montreal Cognitive Assessment (MoCA) =25 score, or b) UHDRS-TFC =12 and MoCA >25
Minimum age
25 Years
Maximum age
65 Years
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
For all participants

* Have a diagnosis of an ongoing neurodegenerative condition other than HD, including but not limited to, Alzheimer's Disease, vascular dementia, dementia with Lewy bodies, or Parkinson's Disease.
* Had gastric bypass surgery, has a gastric sleeve or lap band, or has had any related procedures that interfere with gastrointestinal transit.
* Is known to be allergic to any of SAGE-718 excipients, including soy lecithin.
* Receive any prohibited medications within 30 days of screening and during participation in the study.

Additional exclusion criteria for the de novo cohort (Cohort 3):

* Have previous exposure to gene therapy, or have participated in any other HD investigational drug, biologic, or device trial within 180 days or a non-HD drug, biologic or device trial within 30 days or 5 half-lives (whichever is longer). Additionally, participants who have received treatment with antisense oligonucleotides or a messenger ribonucleic acid (mRNA) splicing modifier will be excluded.

Note: Participants with confirmation of enrolment in the placebo arm of these investigational trials would not be excluded.

Additional exclusion criteria for 718-CIH-201/202 completers (Cohorts 1 and 2):

* Have one or more ongoing serious adverse events (SAEs) from the parent study.
* Have ongoing, unresolved AE(s), which in the opinion of the investigator or sponsor, is likely to interfere with study conduct or compliance.

Study design
Purpose of the study
Treatment
Allocation to intervention
Non-randomised trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Single group
Other design features
Phase
Phase 3
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
14/12/2022
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
1/07/2030
Actual
Sample size
Target
300
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)

Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
Sage Therapeutics
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Maddie Pantoni, PhD
Address 0 0
Country 0 0
Phone 0 0
617-949-4276
Fax 0 0
Email 0 0
maddie.pantoni@sagerx.com
Contact person for scientific queries

No information has been provided regarding IPD availability


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

No documents have been uploaded by study researchers.

Results not provided in https://clinicaltrials.gov/study/NCT05655520