did not meet planned recruitment expectations with a slow recruitment rate

The main purpose of this study is to further assess treatment efficacy and safety after using QuiremSpheres® for the treatment of patients with unresectable primary liver cancer or unresectable liver metastases suitable for SIRT and allocated to this treatment by a multidisciplinary tumor board.

Liver tumors can be of primary (Hepatocellular Carcinoma, HCC) or metastatic (mainly from colorectal carcinoma, CRC) origin. Both HCC and CRC are common causes of death from cancer worldwide. The overall incidence of HCC and CRC remains high in developing countries and is steadily rising in most industrialized countries. Available treatment options depend on the size, number, and location of tumors, on liver status, overall performance status and comorbidities, on patency of portal vein and presence of extrahepatic metastatic disease. They include surgical (liver resection, liver transplantation), systemic (e.g. chemotherapy, immunotherapy), ablative (thermal ablation, chemical ablation) and intra-arterial (chemoembolization, radioembolization) modalities. Radioembolization, also known as Selective Internal Radiation Therapy (SIRT) with microspheres containing a radiation-emitting isotope (Yttrium-90 or Holmium-166) delivers localized radiation in the vasculature around liver tumors with relatively limited concurrent injury to the surrounding normal/healthy tissue. Yttrium-90 radioembolization is currently included in several guidelines (EASLEORTC, ESMO).

Inclusion Criteria:

• Patient with diagnosis of primary liver tumor or metastases in the liver from other primary cancers, allocated to SIRT with QuiremSpheres® as decided by a multidisciplinary tumor board
• Patient is ≥ 18 years
• Patient has understood and signed written informed consent to data collection in the study

Exclusion Criteria:

• Patient's refusal
• Local practice guidelines prohibiting the patient to receive SIRT

Patients with unresectable primary liver cancer or unresectable metastases in the liver.