Biocon and Viatris Draw Complete Response Letter for Bevacizumab BLA

In a recent development in the pharmaceutical industry, Biocon and Viatris have received a Complete Response Letter (CRL) from the FDA for their Biologics License Application (BLA) for bevacizumab. This news has significant implications for the potential approval of bevacizumab, a widely used medication for various types of cancer. In this blog, we will focus on the key points surrounding Biocon and Viatris’ receipt of the CRL and its impact on the availability of bevacizumab for patients.

Key Points

Here are the key points to consider regarding Biocon and Viatris’ receipt of a Complete Response Letter for their bevacizumab BLA:

1. Understanding Bevacizumab:

Bevacizumab is a monoclonal antibody that targets vascular endothelial growth factor (VEGF), a protein involved in the growth of new blood vessels. It is approved for the treatment of various cancers, including colorectal, lung, and ovarian cancer. Bevacizumab works by inhibiting the formation of new blood vessels in tumors, thereby limiting their growth and spread.

2. The BLA and Complete Response Letter:

A Biologics License Application (BLA) is a request for FDA approval to market a biologic, which includes therapeutic antibodies like bevacizumab. Biocon and Viatris submitted a BLA for bevacizumab, seeking approval to market the medication for specific cancer indications. However, they recently received a Complete Response Letter (CRL) from the FDA, indicating that the application cannot be approved in its current form.

3. Reasons for the Complete Response Letter:

The specific reasons for the Complete Response Letter have not been disclosed publicly. A CRL is issued when the FDA has completed its review of an application but determines that more information is needed before granting approval. It is a standard part of the FDA review process and provides the opportunity for the companies to address the agency’s concerns and resubmit the application for reconsideration.

4. Implications for Patients and Healthcare:

The receipt of a Complete Response Letter for bevacizumab delays its potential availability to patients who may benefit from this medication. Bevacizumab plays an essential role in treating various types of cancer, and its approval for additional indications would provide more treatment options for patients. However, until the companies address the FDA’s concerns and satisfy the regulatory requirements, the approval process will be put on hold.

5. Ensuring Safety and Efficacy:

While the receipt of a Complete Response Letter may cause temporary setbacks, it is crucial to recognize that the FDA’s role is to ensure the safety and efficacy of medications before granting approval. The CRL provides an opportunity for Biocon and Viatris to work closely with the FDA, addressing any concerns or deficiencies identified during the review process. This collaboration aims to refine the application and ultimately enhance patient safety.

6. Commitment to Development and Patient Care:

Biocon and Viatris remain committed to the development and availability of bevacizumab as a treatment option for various cancers. The receipt of a Complete Response Letter is a common occurrence in the pharmaceutical industry, and it underscores the importance of rigorous regulatory review in ensuring patient safety and therapy efficacy. The companies will focus on addressing the FDA’s concerns in a timely and appropriate manner, aiming to resubmit the application for bevacizumab’s approval.


The receipt of a Complete Response Letter by Biocon and Viatris for their bevacizumab Biologics License Application reflects a temporary delay in the approval process. While this news may impact patients awaiting access to bevacizumab for certain cancer indications, it is crucial to recognize that the FDA’s review aims to ensure safety and efficacy. Biocon and Viatris will work closely with the FDA to address the concerns raised and strive towards providing a valuable treatment option for cancer patients. The commitment to refining and resubmitting the application highlights their dedication to patient care and the ongoing efforts in the development of innovative therapies.