FDA warning letter · Drugs

Antonio E. Blanco, M.D./Vista Health Research, LLC

Issued · Posted by FDA

Selected passages from the FDA letter

Quoted FDA text from the published dataset. These selected excerpts are not the complete letter.

Passage 1

You failed to ensure that the investigation was conducted according to the investigational plan [21 CFR 312.60].

Passage 2

You failed to adhere to this requirement. Specifically, Subject **(b)(6)** was randomized on **(b)(6)**, with 12 days of **(b)(4)**, and 0 days of **(b)(4)**. As such, this subject did not have the required e-Diary documentation of at least 2 or 4 days of **(b)(4)** and an average **(b)(4)** score of at least **(b)(4)**, respectively.

Passage 3

You failed to adhere to these requirements. Specifically, protocol-required safety imaging procedures were not conducted for the following subjects:

Citations in the original letter

As cited in this historical letter, not a statement of current regulatory requirements.

  • 21 CFR 312.60
  • 21 CFR 312