ADHD can affect every area of a teen’s life.

We’re inviting your teen to join the Castle Study, for adolescents between the ages of 13 to 17 years old with ADHD.

The Castle Study will enroll about 450 participants with ADHD at approximately 50 research study sites in the United States and Canada.

See if this study is right for your teen – Complete the questionnaire

The Castle Study is evaluating an investigational drug as a possible treatment for ADHD. There is no cost for receiving any study-related drugs during the course of the study.

Your teen may qualify for the Castle Study if they:

  • Are between the ages of 13 to 17 years old
  • Have ADHD
  • Are interested in participating in a clinical research study
All study-related visits, tests, and investigational drug or placebo will be provided at no cost. In addition, reimbursement for study-related travel may be provided.
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About the Castle Study

The Castle Study will enroll about 450 participants with ADHD at approximately 50 research study sites in the United States and Canada.

The study will include approximately 9 visits to a study site and 1 telephone call over about 11 weeks.

All study-related visits, tests, and investigational drug or placebo will be provided at no cost. In addition, reimbursement for study-related travel may be provided.

Who can take part in the Castle Study?

Your teen may qualify for the Castle Study if they:

  • Are between the ages of 13 to 17 years old
  • Have ADHD
  • Are interested in participating in a clinical research study

The Castle Study is evaluating an investigational drug as a possible treatment for ADHD. There is no cost for receiving the investigational drug or placebo during the course of the study.

Sign Up

What happens if I sign up? We will match your teen to a study location in your area that is enrolling participants with ADHD or notify you when one becomes available.

To find out if the Castle Study is right for your teen,, we need to collect some initial information from you about your teen’s ADHD. If the information you provide indicates that the study may be right for your teen, someone from the study site will contact you to discuss next steps and provide additional information about study qualification and participation. Keep in mind that participation is entirely voluntary. If your teen does decide to take part in the study, they may change their mind about participating at any time.

About ADHD

Attention-deficit/hyperactivity disorder (ADHD) is an increasingly recognized disorder characterized by 3 core symptoms of hyperactivity, inattentiveness, and impulsivity.1 Depending on the ADHD subtype, sex of the individual, and presence of comorbid disorders, individuals with ADHD may display considerably different symptomatology, even within a particular age group.2

ADHD is typically viewed as a childhood/adolescent disorder3. ADHD frequently begins between 2 and 4 years of age4,5 and it is typically diagnosed between ages 7 and 10 years. Because inattention, impulsivity, and hyperactivity can all be normal behaviors for a young child, making a diagnosis of ADHD often requires the degree and impairment of these symptoms to be beyond what is developmentally appropriate.6 In addition, symptoms of ADHD, even at a young age, are frequently associated with social impairment, such as emotional distress for the child and the parents.7

Despite how common ADHD is, there are limited treatment options, meaning there is a need for new treatments.

The Castle Study is evaluating an investigational drug as a possible treatment for ADHD. There is no cost for receiving treatment during the course of the study.

References:
1:
Sharma A, Couture J. A review of the pathophysiology, etiology, and treatment of attention-deficit hyperactivity disorder (ADHD). Ann Pharmacother. 2014;48(2):209-225.
2:
American Academy of Pediatrics. Committee on Quality Improvement, Subcommittee on Attention-Deficit/Hyperactivity Disorder: diagnosis and evaluation of the child with attention-deficit/hyperactivity disorder. Pediatrics. 2000;105(5):1158-1170.
3:
Sayal K, Prasad V, Daley D, Ford T, Coghill D. ADHD in children and young people: prevalence, care pathways, and service provision. Lancet Psychiatry. 2018;5(2):175-186.
4:
Connor DF. Preschool attention deficit hyperactivity disorder: a review of prevalence, diagnosis, neurobiology, and stimulant treatment. J Dev Behav Pediatr. 2002;23(1 Suppl):S1-S9.
5:
Egger HL, Angold A. Common emotional and behavioral disorders in preschool children: presentation, nosology, and epidemiology. J Child Psychol Psychiatry. 2006;47(3-4):313-337.
6:
Biederman J, Kwon A, Aleardi M, Chouinard VA, Marino T, Cole H, et al. Absence of gender effects on attention deficit hyperactivity disorder: findings in nonreferred subjects. Am J Psychiatry. 2005;162(6):1083-1089.
7:
DuPaul GJ, McGoey KE, Eckert TL, VanBrakle J. Preschool children with attentiondeficit/hyperactivity disorder: impairments in behavioral, social, and school functioning. J Am Acad Child Adolesc Psychiatry. 2001;40(5):508-515.

Frequently Asked Questions

What is a Clinical Research Study?

A Clinical Research Study (also called a study) is a study that helps to answer important questions about an investigational drug – these may include how well an investigational drug works for a certain condition. All drugs must be tested in clinical research studies before they can be approved and prescribed to patients.

A study is the process by which new and innovative drugs, interventions, and treatments are approved and brought to market and made available for people with different health conditions. Even over-the-counter drugs, such as Ibuprofen or Acetaminophen, you may have used to counteract a headache, have gone through the clinical study process before it was available at your local pharmacy.

The Castle Study is evaluating an investigational drug. An investigational drug is being studied as a possible treatment for Attention-deficit/Hyperactivity Disorder (ADHD). Permission for this study has been granted by the United States Food and Drug Administration (FDA) and Health Canada. The investigational drug is not available for sale in the United States or Canada. The purpose of this study is to find out the potential benefits and safety of the investigational drug being studied.

Participants will receive either the investigational drug or a placebo in this study. A placebo is an inactive material that looks like the investigational drug but does not contain any active drug. Researchers use a placebo to see if the investigational drug works better or is safer than taking nothing. By having one group of participants take a placebo and another group of participants take the investigational drug, researchers can measure if the drug works by comparing how both groups react.

If the study doctor decides that your teen meets all of the requirements to be in this study, they will be randomly assigned (like drawing straws) to one of three participant groups. Approximately 2 out of 3 participants will receive the investigational drug. Approximately 1 out of 3 participants will receive placebo. The participant group that your teen has been assigned to will not be known by your teen, you, the study doctor, or the study site staff.

About 450 participants will participate in the study. The study is being done at about 50 study sites in the United States and Canada.

If your teen chooses to take part in this study, they will have about 10 study visits (9 office visits and 1 telephone visit) over 11 weeks (just under 3 months).

Those who take part in the study may receive reimbursement for travel expenses related to study participation. Please discuss this with the study site staff when they contact you.

There is no cost to participate in the Castle Study. If your teen decides to take part:

  • They will receive study-related care throughout their participation from a team of experienced doctors and nurses.
  • They will receive study-related treatments at no cost.

The study doctor and staff at the study site will be able to explain more about what the Castle Study will involve, and it is up to you and your teen to decide if you want to take part. Participation in this study is voluntary. Whether or not you and your teen decide to participate in this study will not affect current or future relationships with your doctors. If you decide to participate, you and your teen are free to leave the study at any time without affecting those relationships.

We match your teen to a study site within a close travel distance from your home. If we are not running the study in your area currently, with your permission, we will keep your teen in our database and reach out once a study in your area becomes available. If, at any time, you decided you no longer want your teen’s information stored, you can opt out and we will delete their details.