Find a IMPRSSION clinical trial site near you

We advise patients and families participating in our clinical studies to follow the advice provided by their local clinical trial site team and abide by any guidance issued by local authorities.

Below is a list of sites that are currently active. Please check back regularly as new study sites are being added. For additional information or questions, please contact us at [email protected] or (844) 673-0662.

For full study details and locations please visit

As the COVID-19 pandemic evolves, Ionis is carefully monitoring the situation and is focused on the safety of our study participants.

Study Locations Map: