A prospective multicentre study which includes patients ≤ 70 years-old diagnosed of unresectable hilar cholangiocarcinoma (hCCA) ≤3cm in radial diameter, without evidence of lymph node or distant metastases. Liver transplantation preceded by neoadjuvant radio-chemotherapy will be performed in this selected group. The primary endpoint will be overall survival at 1, 3, and 5 years post-transplant. The secondary endpoints will be: 1) recurrence free survival at 1, 3 and 5 years post-transplant; 2) intention-to-treat survival of overall patients included in the study at 1,3 and 5 year; 3) the rate of patients included in the study who are finally transplanted.