A Clinical Study for Children with Doose Syndrome, also know as Epilepsy with Myoclonic-Atonic Seizures (EMAS).
Is your child aged 1 to 18 years old and diagnosed or suspected to have EMAS?*
If yes, your child may be eligible to take part in the CinEMAS study. This study is evaluating how well a study medicine that is approved for other types of seizures works to reduce the frequency of seizures associated with EMAS in children and adolescents. EMAS is a condition that is also called Doose syndrome, myoclonic-astatic epilepsy, or myoclonic-atonic epilepsy. Learn about the types of seizures that are often associated with EMAS.
*EMAS diagnosis can be confirmed during screening by a study doctor.
To find out if your child may be eligible for the CinEMAS study, contact a study site location near you.
Contact a study site
About The CinEMAS Study
The CinEMAS study is a two-part study that will evaluate how well a study medicine works to reduce the frequency of seizures associated with EMAS. The Main Study (Part A) will assess how well the study medicine works and how safe it is compared to a placebo. The Extension Study (Part B) will assess how well the body tolerates the study medicine and how well it works over a longer period of time. The study treatment will be taken in addition to the participant’s other current treatments.
To help understand if the study medicine is truly an effective treatment for children with EMAS, it will be compared to a placebo. A placebo is a “sugar medicine” that looks, smells, and tastes the same as the study medicine, but does not have any active ingredients in it. A placebo is used to help understand if the study medicine really works. An investigational medicine is only considered to work properly if it is shown to be more effective than a placebo.
Some participants will receive the study medicine and others will receive a placebo in the Main Study. Neither you nor your child’s study doctor will know which medicine your child is receiving until the entire study has finished.
However, it’s important for you to know that during the Extension Study (Part B), all participants will receive the study medicine and not a placebo, regardless of their treatment assignment in the Main Study.

What is the study medicine?
The investigational medication in this study is an oral cannabidiol, or CBD, solution that is taken twice daily. It has been approved in the United States, European Union, and the United Kingdom for the treatment of certain types of seizures. It is not approved to treat people with EMAS and is therefore called “investigational.”
Details of the study
The CinEMAS study is a global study being conducted in the United States, Australia, Italy, and the United Kingdom. The study will enroll up to 240 children and adolescents between 1 and 18 years of age who have been diagnosed with EMAS or are suspected of having EMAS.
Main Study (Part A):
Participation in this portion of the study will last approximately 26 weeks and includes 4 periods: screening, seizure observation, treatment, and follow-up.
Screening(1-3 weeks)
Study site visit
The child and their caregiver(s) will visit the study site to see if the study is right for them and to decide if they want to take part.
Seizure Observation(4 weeks)
Phone call
The caregiver will identify, count, and report their child’s seizures to an electronic diary.
Treatment(14 weeks)
4 study site visits and 4 phone calls
The child will take the study medicine or placebo twice a day. An electronic diary will be completed daily by the caregiver.
Depending on how the child responds to the treatment, the dose may be increased or decreased by the study doctor.
Follow-up(5 weeks)
1 study site visit and 1 phone call
The treatment dose will be tapered down over 10 days, followed by a 4-week safety follow-up period. (Children who join the Extension Study will skip this period.)

During these periods, a combination of study site visits and phone calls will be required. It may be possible to reduce the number of study site visits by having some assessments performed at your home.
Extension Study (Part B):
Participants in the Main Study will have an option to continue in the Extension Study. During the Extension Study, all participants will be treated with the study medicine (not a placebo) over a period of approximately 54 weeks. The Extension Study will evaluate how well the body tolerates the study medicine and how well it works over a longer period of time.
Children who are eligible and participate in the CinEMAS study will receive the study medicine or placebo, as well as study-related visits, tests and assessments, at no cost. Participants can stop taking part in the clinical trial at any time without giving a reason. Caregivers of participants may also be reimbursed for some study-related expenses, such as costs associated with travel and hotels.
Is the CinEMAS study right for my child?
Your child may be eligible to participate in the CinEMAS study if he/she:
Is between the ages of 1 and 18 years old (inclusive)
Has been diagnosed with EMAS, also known as Doose syndrome, myoclonic-astatic epilepsy, or myoclonic-atonic epilepsy
Did not respond to 1 or more anti-seizure medications
Is currently being treated with 1 or more anti-seizure medications on a stable regimen or on a stable ketogenic diet
Started having seizures from 6 months to 5 years of age, with normal development or only mild delays in development and cognitive abilities prior to the onset of seizures
Even if your child has not been diagnosed with EMAS by a physician, they may still be able to participate in the study.
If you believe your child can possibly have EMAS or experiences seizures typical of EMAS—such as myoclonic-atonic, atonic, tonic, clonic, and/or tonic-clonic seizures—please contact a study site location near you so that they can obtain more information about your child and suggest additional steps, if possible.

To find out if your child may be eligible for the CinEMAS study, contact a study site location near you.
Contact a study siteYour child must meet all other study criteria to take part in the CinEMAS study.
Participating in a clinical study can help advance medical science and help your loved ones and others in the community by making new treatments available.
About Epilepsy with Myoclonic-Atonic Seizures (EMAS) or Doose Syndrome
EMAS is a rare form of early childhood epilepsy that usually begins between the ages of 1 and 6. This condition is also called Doose syndrome, myoclonic-astatic epilepsy, or myoclonic-atonic epilepsy. EMAS causes an estimated 1% to 2% of childhood epilepsy and affects approximately 1 in 10,000 children.1,2 Children with EMAS usually have normal development before any seizures begin or have only mild delays in development and cognitive abilities prior to having seizures.3
EMAS can include multiple types of seizures, which are described below. Myoclonic-atonic seizures are the most common seizure type and are necessary for a diagnosis of EMAS.1,2
Myoclonic-atonic
A brief jerking movement (the myoclonic component) followed by a drop (fall) due to a sudden loss of muscle tone (the atonic component)4,5
Myoclonic
A sudden, brief jerking movement of variable intensity4,5
Atonic
A drop (fall) due to a sudden loss of muscle tone4,5
Generalized tonic-clonic
The entire body briefly stiffens, followed by a rhythmic shaking or jerking. Often the first seizure type seen in EMAS4,5
Atypical absences
Glazed look, staring, or slow responses; may have motor symptoms such as twitching of the mouth and eye blinking4,5
Tonic
A stiffening of the whole body that can result in a drop (fall)4,5
The seizures associated with EMAS are called generalized seizures because they affect the whole brain instantly, not just one part. These seizures alter consciousness and there is no warning.4
How is EMAS treated?
Treatment options for EMAS include several anti-seizure medications and a ketogenic diet. However, many children with EMAS stop responding to anti-seizure medications. Despite the significant impact on patient’s lives, there are no FDA-approved treatment options specifically for EMAS and there are no clear treatment guidelines.2,6 Thus, there is an unmet need for the development of effective and well-tolerated treatments for children living with EMAS.

The CinEMAS study is evaluating how well a study medicine works in reducing the frequency of EMAS-associated seizures. The goal of the study is to provide a treatment option to help those who suffer from EMAS and their families.
References
- Neubauer BA, Hahn A, Doose H, Tuxhorn I. Myoclonic-astatic epilepsy of early childhood—definition, course, nosography, and genetics. Adv Neurol. 2005;95:147-55.
- Hinokuma N, Nakashima M, Asai H, et al. Clinical and genetic characteristics of patients with Doose syndrome. Epilepsia Open. 2020;5(3):442-450. doi: 10.1002/epi4.12417.
- Moeller F, Groening K, Moehring J, et al. EEG-fMRI in myoclonic astatic epilepsy (Doose syndrome). Neurology. 2014;82(17):1508-1513. DOI: 10.1212/wnl.0000000000000359.
- What are the seizure types? Doose Syndrome Epilepsy Alliance website. https://doosesyndrome.org/parents-and-caregivers/what-are-the-seizure-types/. Accessed November 14, 2022.
- Estiphan T, Joshi C. Epilepsy with myoclonic-atonic seizures (Doose syndrome). Child Neurology Foundation website. https://www.childneurologyfoundation.org/disorder/epilepsy-with-myoclonic-atonic-seizures-doose-syndrome/. Accessed November 14, 2022.
- Nickels K, Kossoff EH, Eschbach K, Joshi C. Epilepsy with myoclonic-atonic seizures (Doose syndrome): Clarification of diagnosis and treatment options through a large retrospective multicenter cohort. Epilepsia. 2021;62(1):120-127. doi: 10.1111/epi.16752.
If you are interested in having your child participate in the CinEMAS study
Contact a study site near you

Frequently Asked Questions
What is a study?
A study (also called a clinical trial) is a medical study that helps to answer important questions about an investigational medication, including how well the medication works for a certain condition and how safe and tolerable the medication is.
All medications must be tested in clinical research studies before they can be approved by regulatory authorities and prescribed to patients. Even if a medication is already approved for a certain condition, it must be tested again before it can be approved for a different condition.
Why are studies important?
A study is the process by which new and innovative medications, interventions, and treatments are approved and brought to the general public, so people can hopefully live happier and healthier lives. Even over-the-counter medications, such as aspirin that you may have used for a headache, have gone through the clinical research study process before they were available at your local pharmacy.
By participating in a clinical study, you can help advance medical science and help your loved ones and others in the community by making new treatments available.
What is the purpose of the CinEMAS study?
The purpose of this study is to assess the effect of a study medicine, compared with a placebo, on the frequency of seizures in children and adolescents between 1 and 18 years of age who have been diagnosed with EMAS or are suspected of having EMAS. The study will also assess how well the body tolerates the study medicine and how well it works over a longer period of time.
What is the study medicine?
The investigational medicine in this study is an oral cannabidiol, or CBD, solution that has been approved in the United States, European Union, and the United Kingdom for the treatment of certain types of seizures. It is not approved to treat people with EMAS and is therefore called “investigational.”
The CinEMAS study is looking at how well the body tolerates the study medicine and whether it works in children and adolescents with EMAS. The study treatment will be taken in addition to the participant’s other current treatments. Like all medication, the trial medication may cause side effects. If your child experiences any side effects, you should let your child’s trial physician know immediately.
What will the CinEMAS study involve?
CinEMAS is a two-part study: the Main Study (Part A) will assess the how well the study medicine works and how safe it is compared to a placebo and the Extension Study (Part B) will assess how well the body tolerates the study medicine and how well it works over a longer period of time.
The duration of participation in the Main Study will be approximately 26 weeks, which includes a 1- to 3-week Screening Period, 4-week Seizure Observation Period, 14-week Dose Optimization Treatment Period, 10-day Taper Period, and a Safety Follow-up Period (4 weeks after end of taper visit).
If qualified for the study, participants will be randomly assigned, like drawing straws, to one of two treatment groups to take either the study medicine (oral solution) or a placebo. A placebo looks like the study medicine but does not contain the active ingredient. The Main Study is double-blind, which means that neither participants nor the study doctor will know which treatment they are taking during the study.
During the 14-week Treatment Period of the study, participants will take their study treatment twice a day at home as instructed by the study doctor (the first dose will be taken by the patient at the study site). The study treatment will be taken in addition to the participant’s other current treatments.
An electronic diary using a smartphone app (phone to be provided) will be completed throughout the study by the patient’s main caregiver to document various aspects of treatment. Visits will be required throughout the study, comprised of study site visits and phone calls. During these visits, a variety of tests, procedures, and questionnaires will be completed. It may be possible to reduce the number of study site visits by having some assessments performed at your home.
Upon completion of the Main Study, participants will have an option to continue in the Extension Study. The Extension Study will assess how well the body tolerates the study medicine and how well it works over a longer period of time. Patients who received the placebo in the Main Study will be switched to the study medicine. The duration of study participation in the Extension Study will be approximately 54 weeks and the electronic diary will be completed at least weekly.
Will compensation for time and travel be provided?
Caregivers of children who qualify to take part in the study may receive reimbursement for time and travel. Please discuss this with the study team.
Is there a cost to participate?
There is no cost to participate in the CinEMAS study. If your child is eligible and you decide to take part:
- Your child will receive study-related care from a team of experienced doctors and nurses throughout the study
- All study-related visits, tests, assessments, and investigational medication will be provided at no cost to you
What else do I need to consider?
The research team will be able to explain more about what the CinEMAS study will involve, and it is up to you to decide if you want your child to take part. Participation in this study is voluntary. Your decision to participate or not participate will have no effect on the medical care your child receives now or in the future. If your child is eligible and you choose to have them participate in the CinEMAS study, your child may leave the study at any time without providing any reason.
Where are the study sites located?
The global CinEMAS study is being conducted across several study sites in the United States, Australia, Italy, and the United Kingdom. Find a study site location near you.
What if my child has not been formally diagnosed with Doose syndrome (EMAS) yet — can they still participate?
Your child can still be considered for the CinEMAS study by one of the study doctors. Please contact one of the study sites nearest to you and they can help to determine if your child can participate in the study or not.
The CinEMAS Study Is Taking Place Now
Contact the site closest to you to learn if your child is eligible
There are CinEMAS study sites located in the United States, Australia, Italy, and the United Kingdom. View the study sites by location to determine which is closest to you.
Alabama
Children’s Hospital of Alabama
Birmingham, AL 35233
Contact: Megan Whatley
Email: mwhatley@uabmc.edu
Phone: 205-638-6877
Principal Investigator: Ismail Mohamed
California
Coming Soon
Colorado
Coming Soon
Delaware
Coming Soon
Georgia
Emory University/Children’s Healthcare of Atlanta
Atlanta, GA 30329
Contact: Sarah Maddox
Email: neuroresearch@choa.org
Phone: 404-785-2320
Principal Investigator: Neal Sanhkla
Florida
Coming Soon
Illinois
Ann & Robert H. Lurie Children’s Hospital of Chicago
Chicago, IL 60611-2605
Contact: Maya Stosic
Email: mstosic@luriechildrens.org
Phone: 312-227-4525
Principal Investigator: Linda Laux
Minnesota
Mayo Clinic
Rochester, MN 55905
Contact: Bridget Neja, Clinical Research Coordinator
Email: Neja.Bridget@mayo.edu
Phone: 507-266-9150
Principal Investigator: Katherine Nickels
North Carolina
Coming Soon
Ohio
Cincinnati Children’s Hospital Medical Center
Cincinnati, OH 45229
Contact: Melissa Reed
Email: melissa.reed1@cchmc.org
Phone: 513-803-0053
Principal Investigator: Gewalin Aungaroon, MD
South Carolina
Coming Soon
Texas
Dell’s Children’s Hospital
Austin, TX 78723
Contact: Kendra D Koch
Email: kdkoch@utexas.edu
Principal Investigator: Kristina Julich
Washington
Coming Soon
Washington D.C.
Coming Soon
New South Wales
COMING SOON
Queensland
COMING SOON
Victoria
COMING SOON
Western Australia
COMING SOON
Italy
COMING SOON
United Kingdom
Coming Soon