Study to Evaluate the Safety and Preliminary Efficacy of 177Lu-OPS201 in NETs

Official Title

An International, Multicentre, Open-label Study to Evaluate Safety, Tolerability, Biodistribution, Dosimetry and Preliminary Efficacy of 177Lu-OPS201 for the Therapy of Somatostatin Receptor-positive Neuroendocrine Tumours (NETs)


The purpose of this clinical phase I/II study is to investigate the safety and tolerability of 177Lu-OPS201 used for the treatment of patients with neuroendocrine tumours (NETs). Secondary objectives of these study are the assessment of biodistribution, dosimetry and preliminary efficacy of 177Lu-OPS201.

Trial Description

Primary Outcome:

  • Safety and Tolerability of 177Lu-OPS201 assessed by number of patients with treatment related adverse events using CTCAE v5.0
Secondary Outcome:
  • Area under the curve (AUC) of 177Lu-OPS201 in discernible thoracic and abdominal organs, target lesion and blood
  • Maximal uptake (achieved in %) at the target lesion.
  • Maximal uptake (achieved in %) in discernible organs.
  • Organs receiving the highest absorbed dose assessed by equivalent dose to tissue (HT; achieved in Sv).
  • Specific absorbed dose per organ (achieved in μGy/MBq).
  • Cumulative absorbed organ doses (achieved in Gy).
  • Preliminary therapeutic efficacy of 177Lu-OPS201 assessed by tumour response based on RECIST v1.1
  • Preliminary therapeutic efficacy of 177Lu-OPS201 assessed by monitoring of PFS (based on RECIST v1.1 status)
  • Quality of Life (QoL) questionnaire

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Canadian Cancer Society

These resources are provided in partnership with the Canadian Cancer Society