Safety and Efficacy Study of Nuc-1031 and Carboplatin Combination to Treat Recurrent Ovarian Cancer

Nuc-1031 and carboplatin combination is a new experimental treatment for ovarian cancer which reappear after standard chemotherapy. Chemotherapy is the name for drug treatments to kill or control the growth of cancer cells. Although there is some evidence from laboratory and clinical studies that Nuc-1031 is effective in the treatment of ovarian cancer, it has not yet been tested in combination with another chemotherapy drug. So this combination treatment is classed as a first in human study(Phase1B). The aim of the study is to investigate whether adding Nuc-1031 to carboplatin can improve the benefits of chemotherapy. Other purposes are to find out whether Nuc-1031 is safe to give with carboplatin, to identify the correct dose of Nuc-1031 when given with carboplatin and establish how effective the combination is at treating ovarian cancer. This study is also designed to enable us to find out whether Nuc-1031 adds further benefit, over and above that achieved by carboplatin alone, when treating ovarian cancer. and carboplatin combination will be given in six cycles. Each cycle is 3 weeks long. On first day of first week of each cycle (day1), selected study participants will receive one dose of both Nuc-1031 and Carboplatin chemotherapy. Following this, the study participant will receive a second dose of Nuc-1031 alone on first day of second week (day 8). This schedule will be repeated every 3 weeks for 6 cycles.