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CRS | CERES Regulatory Services

The Voxzogo Resubmission Journey: From FDA CRL to Approval 

Hello Regulatory Scientists,  Today, let’s explore the journey of Voxzogo (vosoritide) from receiving an FDA Complete Response Letter (CRL) to achieving approval. This case study provides valuable insights and lessons that can guide companies developing new drugs today.  Regulatory History and Initial Submission  Drug: Voxzogo (vosoritide) Mechanism of Action: C-type natriuretic peptide (CNP) analog that promotes […]

The Klisyri Resubmission Journey: From FDA CRL to Approval 

Hello Regulatory Scientists,  Today, let’s explore the journey of Klisyri (tirbanibulin) from receiving an FDA Complete Response Letter (CRL) to achieving approval. This case study provides valuable insights and lessons that can guide companies developing new drugs today.  Regulatory History and Initial Submission  Drug: Klisyri (tirbanibulin) Mechanism of Action: Microtubule inhibitor, which disrupts cellular processes essential […]

The Zepatier Resubmission Journey: From FDA CRL to Approval

The Addyi Resubmission Journey: From FDA CRL to Approval

Hello Regulatory Scientists, Today, let’s explore the journey of Zepatier (elbasvir/grazoprevir) from receiving an FDA Complete Response Letter (CRL) to achieving approval. This case study provides valuable insights and lessons that can guide companies developing new drugs today. Regulatory History and Initial Submission Drug: Zepatier (elbasvir/grazoprevir) Mechanism of Action: NS5A inhibitor (elbasvir) and NS3/4A protease […]