Cabozantinib Treatment in a Phase II Study for Patients With Hepatocellular Carcinoma (HCC) Refractory to PD-1 Inhibitors

Inclusion Criteria:

1. Patients with diagnosis of locally advanced or metastatic and/or unresectablehepatocellular carcinoma (HCC)

2. Pre-Treatment with a PD-1/PD-L1 inhibitor for at least one administration which wasgiven as first line or as following line systemic treatment alone or in combinationwith other systemic or local treatments (e.g. TACE)

3. Disease progression or end of therapy due to toxicity during/after pre-therapy

4. CTCAE ≤ Grade 2 prior to study registration, with the exception of alopecia

5. ECOG (Eastern Cooperative of Onco-logy Group) Index 0 or 1

6. Age ≥ 18 years

7. Written informed consent

Exclusion Criteria:

1. Significant portal hypertension (moderate or severe ascites)

2. No adequate controlled arterial hypertension (RR > 140/80mmHg)

3. ALAT/ASAT five times higher then upper normal value

4. Hepatic encephalopathy (every stage)

5. Liver cirrhosis Child-Pugh B and C

6. Known fibrolamellar HCC, sarcomatoid HCC, or cholangiocarcinoma mixed with HCC

7. Major surgical procedure, other than for diagnosis, within eight weeks prior toinitiation of study treatment, or anticipation of need for a major surgicalprocedure during the study

8. Severe infection with alteration of general condition within four weeks prior toinitiation of study treatment

9. Severely impaired kidney function (CDK: stadium 4: GFR<30)

10. Myocardial infarction within 12 months prior to initiation of study treatment

11. Epilepsy

12. Heart failure, Cardiac arrhythmia, respectively long-QT syndrome

13. Severe bleeding or high risk for the development of severe bleeding, includingesophageal varices > 1° or esophageal varices with red marks as seen on a lightedstomach scope (endoscopy)

14. Chronic inflammatory bowel disease (e.g. colitis ulcerosa, diverticulitis, Crohn'sdisease)

15. Increased risk of thromboembolism due to medical history or disease

16. Significant alcohol consumption (>1 drink/day; 1 drink=0.25l beer or 0,1l wine or 2cl spirituous beverages)

17. Known active HIV infection

18. Known hereditary galactose intolerance, lactase deficiency, glucose-galactosemalabsorption

19. Prior Cabozantinib use

20. Ongoing therapy with direct oral anticoagulants (DOAK) / platelet aggregationinhibitor or statine (e.g. Ticagrelor, Clopidogrel)

21. Predicted life expectancy of less than 6 months

22. Female patients who do not meet at least one of the following criteria:

• Postmenopausal women (for at least 1 year before the screening visit) OR

• Postoperative status (6 weeks after bilateral ovariectomy with or withouthysterectomy) OR

• If they are of childbearing potential, agree to practice one highly effectivemethod of contraception and one additional effective (barrier) method at thesame time, from the time of signing the informed consent through 4 months afterthe last dose of study drug, OR

• Agree to practice true abstinence, when this is in line with the preferred andusual lifestyle of the patient. (Periodic abstinence [eg, calendar, ovulation,symptothermal, postovulation methods], withdrawal, spermicides only, andlactational amenorrhea are not acceptable methods of contraception. Female andmale condoms should not be used together.) OR

• Abstinence OR

• Vasectomy of the partner

23. Male patients not using one of the following variants for contraception including aperiod of 4 months after the completion of the therapy:

• Agree to practice true abstinence, when this is in line with the preferred andusual lifestyle of the subject. (Periodic abstinence [eg, calendar, ovulation,symptothermal, postovulation methods], withdrawal, spermicides only, andlactational amenorrhea are not acceptable methods of contraception. OR

• Condition after vasectomy OR

• Condom

24. Participation in any other interventional trials within 28 days prior to initiationof study treatment

25. Suspected lack of compliance to previous treatments; inability to take themedication

26. Pregnancy or lactation, or intention of becoming pregnant during study treatment