Participants must fulfill all of the following inclusion criteria to be eligible for participation in the Study:
1. Age 6 to 50 years old inclusive at the time of informed consent/assent.
2. Participant must sign/date the most current Informed Consent Form (ICF). For minor participants the LAR must/sign date the most current consent and the participant must sign/date the most current age-appropriate assent.
3. In the opinion of the principal investigator (PI), the participant or in the case of a minor their LAR is capable of understanding and complying with protocol and program requirements, oral drug administration and care instructions.
4. Weight ≥18 kg (39.6 lbs.).
5. In the opinion of the PI, the participant meets diagnostic criteria for Tourette's Syndrome (TS) per Diagnostic and Statistical manual for Mental Disorders - 5th Edition (DSM-5-TR diagnostic criteria for TD).
6. The participant must have been treated with an FDA-approved treatment for TD (aripiprazole, haloperidol, or pimozide) or any other D2r antagonist (D2rA) and have experienced treatment failure, tolerability or safety issues as per LAR, participant or prescribing clinician or not have access to any of these approved medications.
7. Females of child-bearing potential must have a negative urine pregnancy test at Screening.
8. Females of child-bearing potential who are sexually active or become sexually active must be using double barrier method (condom and IUD, condom and spermicide, etc.) in addition to any oral contraceptive they may be using and agree to continue use of double barrier contraception for the duration of their participation in the study and for 30 days after their last dose of study drug. Females of non-childbearing potential are exempt from this criterion.
Non-Childbearing potential is defined by:
1. Post menopausal defined as \>= 2 years amenorrheic, or,
2. Bilateral salpingo-oopherectomy, or
3. Hysterectomy, or
4. Pre-menarche
9. Sexually active male participants must use a barrier method of contraception during the study and agree to continue the use of male contraception for at least 30 days after the last dose of study drug.
10. Male participants must agree to not donate sperm and female participants not to donate eggs for at least 30 days after the last dose of study drug.
Diagnosis and Main Criteria for Inclusion:
Inclusion Criteria
Participants must fulfill all of the following inclusion criteria to be eligible for participation in the Study:
1. Age 6 to 50 years old inclusive at the time of informed consent/assent.
2. Participant must sign/date the most current Informed Consent Form (ICF). For minor participants the LAR must/sign date the most current consent and the participant must sign/date the most current age-appropriate assent.
3. In the opinion of the principal investigator (PI), the participant or in the case of a minor their LAR is capable of understanding and complying with protocol and program requirements, oral drug administration and care instructions.
4. Weight ≥18 kg (39.6 lbs.).
5. In the opinion of the PI, the participant meets diagnostic criteria for Tourette's Syndrome (TS) per Diagnostic and Statistical manual for Mental Disorders - 5th Edition (DSM-5-TR diagnostic criteria for TD).
6. The participant must have been treated with an FDA-approved treatment for TD (aripiprazole, haloperidol, or pimozide) or any other D2r antagonist (D2rA) and have experienced treatment failure, tolerability or safety issues as per LAR, participant or prescribing clinician or not have access to any of these approved medications.
7. Females of child-bearing potential must have a negative urine pregnancy test at Screening.
8. Females of child-bearing potential who are sexually active or become sexually active must be using double barrier method (condom and IUD, condom and spermicide, etc.) in addition to any oral contraceptive they may be using and agree to continue use of double barrier contraception for the duration of their participation in the study and for 30 days after their last dose of study drug. Females of non-childbearing potential are exempt from this criterion.
Non-Childbearing potential is defined by:
1. Post menopausal defined as \>= 2 years amenorrheic, or,
2. Bilateral salpingo-oopherectomy, or
3. Hysterectomy, or
4. Pre-menarche
9. Sexually active male participants must use a barrier method of contraception during the study and agree to continue the use of male contraception for at least 30 days after the last dose of study drug.
10. Male participants must agree to not donate sperm and female participants not to donate eggs for at least 30 days after the last dose of study drug.
Participants cannot be enrolled in the study if they meet any of the following criteria.
1. Clinically meaningful abnormalities on laboratory tests at Screening as determined by the PI.
2. Specific laboratory findings at enrollment
1. T. Bili \>= 2.5 x ULN for age (Participants with a history of Gilbert's Disorder must have prior documentation of the disorder.)
2. ALT \>= 2.5 x ULN for age
3. AST \>= 2.5 x ULN for age
4. Positive urine drug screen for cocaine, amphetamine, benzodiazepines, barbiturates, phencyclidine (PCP), or opiates at Screening, except those receiving stable, prescribed treatment for attention deficit/hyperactivity disorder (ADHD) or a positive for benzodiazepine prescribed (either routine or as needed) for any anxiety disorder or anxiety associated with a depressive disorder
5. Severe renal impairment or end stage renal disease as defined by eGFR \< 60 ml/min/1.73m2
3. Any of the following cardiovascular:
1. ECG with a QTcF \> 450 for males or \> 470 for females at screening.
2. A history or finding on the screening ECG of any significant arrhythmia in the opinion of the principal investigator
3. A known family history of QT prolongation syndrome with sudden death
4. Current or anticipated need for medications known to prolong the QT interval
4. A lifetime history of any of the following disorders:
1. Myocardial Infarction
2. Cancer (excluding Basal Cell Carcinoma or Cervical Cancer in situ)
3. Seizure Disorder (except febrile seizure)
4. Neuroleptic Malignant Syndrome
5. Tardive Dyskinesia
6. Parkinson's Disorder
7. Dementia
8. Essential Tremor
9. Substance Use Disorders (as defined by DSM-5-TR) in the past 6 months prior to screening. (Excluding nicotine and/or caffeine)
10. Any general medical disorders OR psychiatric disorder that are not under good control in the opinion of the PI OR require treatment with any prohibited medication.
5. All prescription or over-the-counter drug (e.g., St. Johns Wort) that are strong and moderate inhibitors or inducers of CYP3A4; drugs that are substrates of CYP2D6; or drugs that are substrates of MATE-2K transporters (e.g., metformin).
6. At significant risk of attempting suicide in the opinion of the PI or any one of the following:
1. A history of a suicide attempt OR behavior in the past one year prior to Screening.
2. A lifetime history of 2 or more suicide attempts OR behaviors.
3. A history of non-suicidal self-injurious behavior in the past 2 years prior to Screening.
4. A history of suicide ideation OR thoughts in the past 6 months prior to Screening.
7. Female participants who are currently pregnant or lactating or planning to become pregnant during the study.
8. A history of hypersensitivity or allergic reaction to ecopipam or any inactive ingredient of the formulation.
9. Participants unable to swallow tablets.
10. Any participant who in the opinion of the PI or the Sponsor is not a suitable candidate for the program.
