The purpose of this study is to seek to understand the patient's perspective around deciding to participate in a clinical trial for a Hemophilia therapy

Inclusion criteria for patients:

• Were screened and consented for the AskBio009-101study at any point in time
• Are able to speak and understand English
• Are between ages of 18 and 75
• Are physically able to participate in a one-hour phone interview
• Consented into this study independently of the AskBio009-101 study

Exclusion criteria for patients:

- N/A

Inclusion criteria for investigators and coordinators:

• Worked at a site as an investigator or study coordinator that consented a patient into the
• AskBio009-101 trial at any point in time, including those that no longer work at a AskBio009-101 site
• Are able to speak and understand English
• Are between ages of 18 and 75
• Are physically able to participate in a one-hour phone interview

Exclusion criteria for investigators and coordinators:

- Not directly involved in the consent process at the gene therapy site

Investigators, Study Coordinators, and Participants from the AskBio009-101 Study