A Safety and Pharmacokinetics Study of RC220 Combined With Doxorubicin in Adult Participants With Solid Tumours.

This is a multi-centre, two-part, open-label, phase 1, first in human study of multiple ascending doses of RC220 bisantrene formulation alone and in combination with fixed dose doxorubicin to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD) in adult patients with locally advanced unresectable or metastatic solid tumours where doxorubicin may be considered as a treatment option / or is indicated. The study will consist of two parts: Part 1 - This part involves a fixed-dose doxorubicin (60 mg/m2) tolerability lead-in period, followed by dose-escalating doses of IV RC220 alone, and in combination, with fixed dose doxorubicin, to determine the maximum tolerated combined dose (MTCD) of RC220 with doxorubicin to be evaluated in Part 2. This dose-expansion cohort will enrol patients with solid tumours that are anthracycline treatment naïve and for whom treatment with doxorubicin is indicated. The objective of Part 2 will be to confirm the safety and tolerability and evaluate the preliminary cardioprotective and anti-tumour efficacy of the maximum tolerated combined dose (MTCD) of RC220 with doxorubicin.