I would think a large percentage of players think this is what is going on. A BLA would be relatively new to this process.
“Project Orbis, an initiative of the FDA Oncology Center of Excellence (OCE), provides a framework for concurrent submission and review of oncology products among international partners.
Collaboration among international regulators may allow patients with cancer to receive earlier access to products in other countries where there may be significant delays in regulatory submissions, regardless of whether the product has received FDA approval. Pivotal clinical trials in oncology are commonly conducted internationally and these global trials are increasingly important for investigating the safety and effectiveness of cancer drugs for approval in the United States. Future drug development may benefit by establishing a greater uniformity of new global standards of treatment, leading to the optimal design of these important trials.”