Thank you for your interest in the ORPHEUS study

We need to check a few things first

We call this stage ‘pre-screening’. There are two steps.


Please answer the questions below and enter your contact details.

Any information you provide will be stored on a secure database which can only be accessed by the ORPHEUS study team. Your details will not be shared or discussed with anyone else, except as required by law.


If your answers suggest that the study may be right for you, your contact information will be sent to a study team at the study site you select.

The study team will contact you to discuss the study further and give you more information as well as answer any questions you may have

Please be aware that expressing an interest in a clinical trial does not commit you to taking part. This means you do not have to join the study if you decide it is not right for you. Your regular medical care with your usual treating physician will not be affected.

If you do not wish to continue, please click ‘Back’ now. Any information provided will be deleted.

Please note: this pre-screener is for residents of the United States of America. If you are not a resident of the United States of America, please select your country of residence from the flag selector on the top right of this page. If your country of residence is not on the list, unfortunately the ORPHEUS study is not running in your country.

See if the ORPHEUS study is right for you

Please answer these questions to find out if you may be eligible to participate.

1Are you a man aged between 18 and 55 years old?
2Did your stutter start before you were 8 years old?
3Is your body mass index (BMI) between 19 and 35?

BMI Calculator