In the dynamic landscape of advanced therapy medicinal products (ATMPs), regulatory compliance is crucial for successful clinical trials. Biotech companies often underestimate regulatory challenges on their path to first-in-human trials, leading to delays and potential study termination.


 Recently, Cell Easy was approached by a biotech company eager to accelerate the development and manufacturing of an ATMP.

Driven by the urgency to swiftly bring their innovative therapy to market, they overlooked the importance of comprehensive regulatory planning and documentation.

Consequently, they faced significant setbacks that jeopardized the entire study and resulted in substantial financial losses.

Cindy Cavelier, an experienced QP at Cell Easy, explains, “Regulatory oversights can hinder the progress of an ATMP clinical trial. In this particular case, the biotech’s rush to market without considering regulatory requirements ultimately impeded their success.”

Regulatory oversights can hinder the progress of an ATMP clinical trial. In this particular case, the biotech's rush to market without considering regulatory requirements ultimately impeded their success.

Cell Easy's Guiding Expertise:

To navigate the ATMP regulatory landscape effectively, Cell Easy follows three best practices:

  1. Proactive Regulatory Planning: Early engagement with regulatory authorities is critical for success. We collaborate closely with biotech companies, involving regulatory experts from the outset to ensure a thorough understanding of regulatory requirements. This includes mapping out necessary documentation, quality controls, and specific manufacturing processes for the ATMP.
  2. Tailored Regulatory Strategies: Each ATMP project requires a customized approach to address regulatory challenges effectively. Cell Easy works closely with biotech partners, developing tailored regulatory strategies aligned with their specific needs. This involves conducting comprehensive risk assessments, identifying potential roadblocks, and devising mitigation strategies.
  3. Robust Documentation: A well-structured and comprehensive Investigational Medicinal Product Dossier (IMPD) is essential for successful regulatory review. Cindy and her team assist biotech companies in developing IMPDs adhering to regulatory guidelines, providing a concise overview of the ATMP’s quality, safety, and efficacy. Cindy emphasizes the importance of concise drafting, rapid response to authorities’ questions, and structured information assembly throughout the product’s development.

Lessons Learned:

Avoiding setbacks caused by regulatory oversights requires addressing regulatory requirements alongside technical and scientific aspects, as many biotech founders tend to overlook.

Implementing these practices enables the following benefits:

  • Reduced Delays: Proactive regulatory planning can minimize delays by up to 50%, expediting clinical trial initiation and progression.
  • Cost Reductions: Leveraging regulatory expertise significantly improves compliance with guidelines, reducing the risk of costly revisions and rejections. It is worth noting that costs extend beyond monetary expenses and encompass lost revenue potential and competitive disadvantages.


The shared case study serves as a cautionary tale for biotech companies entering the ATMP development arena. Regulatory compliance is a critical aspect that must not be underestimated. By partnering with a knowledgeable CDMO, biotech companies can benefit from expertise in navigating regulatory challenges effectively, ensuring successful clinical trials and expedited market authorization. Remember, the path to ATMP success begins with a strong foundation of regulatory excellence.

To maintain confidentiality, the case study has been adapted to avoid identifying a specific company.

Cindy Cavelier
Qualified Pharmacist

Cindy holds a PhD in Oncology, which focused on dysfunctions of Acute Leukemia cells in partnership with the hematology laboratory of the CHU de Toulouse and a Doctorate in Pharmacy.

Cindy has 10 years of experience in quality assurance and regulatory of health products acquired in various segments: experimental drugs (gene and cell therapies) and medical devices. Enthusiastic about providing therapeutic solutions for patients, she has participated in the writing and submission of several clinal trials.