Y-mAbs Therapeutics Re-filing BLA for Omburtamab

Y-mAbs Therapeutics is planning to re-submit a BLA on omburtamab for treating patients with CNS/leptomeningeal metastases from neuroblastoma after what it characterizes as a positive pre-BLA meeting with FDA reviewers. In 10/2020, FDA issued a refuse-to-file letter on the therapy due to deficiencies with the submission’s chemistry, manufacturing and control module and the clinical module.

 

The company says the resubmission will include a data readout from a single-center clinical study (Study 03-133) of omburtamab conducted at Memorial Sloan Kettering, where 107 evaluable patients with CNS/leptomeningeal metastases from neuroblastoma received up to two doses of radiolabeled omburtamab. Data showed that patients had a median survival of 50 months, with the final median not yet being reached.

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