Safety and Efficacy Study of NBI-98854 in Adults With Tourette Syndrome

Neurocrine Biosciences

Status and phase: Completed; Phase 2

Conditions: Tourette Syndrome

Treatments: Drug: NBI-98854; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT02581865

NBI-98854-1505

Details and patient eligibility

About

Phase 2, double-blind, placebo-controlled study to assess the safety and efficacy of NBI-98854 administered once daily (qd) for a total of 8 weeks of treatment. This study will enroll approximately 90 male and female subjects clinically diagnosed with Tourette Syndrome.

Enrollment: 124 patients

Sex: All

Ages: 18 to 64 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Have a clinical diagnosis of Tourette Syndrome (TS)
2. Have at least moderate tic severity
3. Have TS symptoms that impair school, occupational, and/or social function
4. If using maintenance medication(s) for TS or TS spectrum diagnoses (e.g. obsessive-compulsive disorder [OCD], Attention-Deficit Hyperactivity Disorder [ADHD]), be on stable doses
5. Be in good general health
6. Have a negative urine drug screen for amphetamines, barbiturates, benzodiazepine, phencyclidine, cocaine, or opiates, and a negative alcohol screen
7. Subjects of childbearing potential who do not practice total abstinence must agree to use hormonal or two forms of nonhormonal contraception (dual contraception) consistently during the screening, treatment and follow-up periods of the study

Exclusion criteria

1. Have an active, clinically significant unstable medical condition within 1 month prior to screening
2. Have a known history of long QT syndrome or cardiac tachy-arrhythmia
3. Have a known history of neuroleptic malignant syndrome
4. Have a cancer diagnosis within 3 years prior to screening (some exceptions allowed)
5. Have an allergy, hypersensitivity, or intolerance to VMAT2 inhibitors
6. Have a known history of substance dependence, substance (drug) or alcohol abuse
7. Have a significant risk of suicidal or violent behavior
8. Are currently pregnant or breastfeeding
9. Have initiated Comprehensive Behavioral Intervention for Tics (CBIT) during the screening period or at baseline or plan to initiate CBIT during the study
10. Have received an investigational drug within 30 days before screening or plan to use an investigational drug (other than NBI-98854) during the study
11. Have a blood loss ≥550 mL or donated blood within 30 days prior to screening

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

---

124 participants in 3 patient groups, including a placebo group

Placebo

Placebo Comparator group

Description:

Placebo administered once daily for 8 weeks

Treatment:

Drug: Placebo

Dose Group 1

Experimental group

Description:

Fixed dose administered once daily for 8 weeks

Treatment:

Drug: NBI-98854

Dose Group 2

Experimental group

Description:

Fixed dose administered once daily for 8 weeks

Treatment:

Drug: NBI-98854