In January 2005, the oversight responsibility of the Post-Approval Studies Program was transferred to the Division of Epidemiology (DEPI) of the Office of Surveillance and Biometrics (OSB)/Center for Devices and Radiological Health (CDRH).
The CDRH Post-Approval Studies Program encompasses design, tracking, oversight, and review responsibilities for studies mandated as a condition of approval of a premarket approval (PMA) application, protocol development product (PDP) application, or humanitarian device exemption (HDE) application. The program helps ensure that well-designed post-approval studies (PAS) are conducted effectively and efficiently and in the least burdensome manner.
CDRH has established an automated, internal tracking system that efficiently identifies the reporting status of active PAS studies ordered since January 1, 2005 based on study timelines incorporated in study protocols and agreed upon by the CDRH and applicants. This system represents CDRH's effort to ensure that all PAS commitments are fulfilled in a timely manner.
In addition, CDRH launched this publicly available webpage to keep all stakeholders informed of the progress of each PAS. The webpage displays general information regarding each PAS, as well as the overall study status (based on protocol-driven timelines and the adequacy of the data) and the applicant's reporting status for each submission due.
The Continued Access Study (CAS) was initiated under an FDA-approved investigational device exemption to provide
supplemental data to the Core Clinical Study. The PACAS is to continue clinical follow-up of the primary augmentation and revision augmentation subjects previously enrolled in Sientra¿s CAS until each subject reaches her 5th year post-implantation.
Study Population Description
Women who received Sientra¿s silicone breast implants and were enrolled in the premarket augmentation cohorts
of the Continued Access Study. The data obtained at baseline on each subject will be used as the control data for physical status, cancer history and status, rheumatologic history and status, medical history and status, and CTD history and status.
A total of 2,497 subjects have been enrolled in Sientra¿s PACAS at 33 sites throughout
the United States.
The safety endpoints include local complications, implant rupture, connective tissue diseases (CTDs), CTD signs and
symptoms, lactation complications, cancer and suicide. Effectiveness will be assessed based on quality of life (QOL) assessments and subject satisfaction.
Followup Visits and Length of Followup
Post-Approval Continued Access Study (PACAS)