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A Study of TD-9855 in Adults With Attention-Deficit/Hyperactivity Disorder (ADHD)

Theravance Biopharma logo

Theravance Biopharma

Status and phase

Completed
Phase 2

Conditions

Attention-Deficit/Hyperactivity Disorder
ADHD

Treatments

Drug: Placebo
Drug: TD-9855

Study type

Interventional

Funder types

Industry

Identifiers

Details and patient eligibility

About

The safety and efficacy of multiple dosages of TD-9855, administered once daily, will be evaluated in adult males with ADHD.

Enrollment

295 patients

Sex

All

Ages

18 to 45 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Subjects must meet the following ADHD diagnostic and inclusion criteria:
  • Subjects must meet Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) criteria for current ADHD subtypes (ADHD combined type, ADHD predominately inattentive type, ADHD predominately hyperactive-impulsive type) as assessed by the clinical interview and confirmed by Adult Attention-Deficit/Hyperactivity Disorder Clinical Diagnostic Scale (ACDS V1.2).
  • Subjects must have a total score of 24 or greater on the AISRS at both the Screening and Baseline Visits AND the Baseline Visit AISRS scores must not vary by more than 20% from Screening.
  • Subjects are required to have CGI-S score ≥4 (moderate) at both the Screening and Baseline Visits. Subjects should have at least moderate severity for ADHD symptoms.
  • For women of childbearing potential, documentation of a negative serum pregnancy test at Screening and a negative urine pregnancy test on Day 0. All female subjects of childbearing potential must be using a highly effective method of birth control during the study and for at least 1 month after completion of study drug dosing.
  • A highly effective method of birth control is defined as one that results in a low failure rate (i.e., <1% per year) when used consistently and correctly, such as condom + diaphragm, condom + spermicide, diaphragm + spermicide, or intrauterine device [IUD] with documented failure rate of <1% per year, or oral/injectable/implanted hormonal contraceptives used in combination with a barrier method.
  • Women are considered to be not of childbearing potential if they have had a total hysterectomy or bilateral tubal ligation (documentation for either must be provided before enrollment) or are at least 2 years postmenopausal. Female subjects cannot be breast-feeding.

Exclusion criteria

Any current psychiatric disorder other than ADHD as defined in DSM-IV-TR as assessed by Mini International Neuropsychiatric Interview (MINI). Subjects with dysthymia that does not require pharmacological treatment will not be excluded.

  • MADRS total score >15.
  • A diagnosis of ADHD NOS.
  • Any diagnosis of lifetime bipolar disorder or psychotic disorder
  • A current diagnosis of any severe comorbid Axis II disorder
  • Any history of mental retardation, organic mental disorders due to general medical condition or pervasive developmental disorder as defined by DSM-IV-TR.-

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Triple Blind

295 participants in 3 patient groups

TD-9855 Dose 1
Experimental group
Treatment:
Drug: TD-9855
Drug: TD-9855
Placebo
Experimental group
Treatment:
Drug: Placebo
TD-9855 Dose 2
Experimental group
Treatment:
Drug: TD-9855
Drug: TD-9855

Trial contacts and locations

17

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Data sourced from clinicaltrials.gov

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