The study will evaluate AZD5335 as monotherapy in patients with ovarian cancer or lung adenocarcinoma (Module 1), or AZD5335 in combination with AZD5305, a selective poly(ADP-ribose) polymerase 1 inhibitor, in patients with ovarian cancer (Module 2). Secondary objectives include assessment of objective response rate, duration of response, disease control rate, and progression-free survival by RECIST v1.1, and overall survival; characterising the pharmacokinetics of AZD5335 when given as monotherapy or in combination; and assessing immunogenicity. The study will be open to recruitment by 25 May 2023.
Furthermore, AZD5335 demonstrated superior activity vs an FRα-MTI benchmark ADC with respect to anti-tumor activity and duration of response in two PDX models with low-to-medium FRα expression at equal or higher drug doses (e.g., in OV0857-CIS: 96% TGI vs 24% TGI at 5 mg/kg and 95% TGI vs 2% TGI at 2.5 mg/kg of a single IV dose AZD5335 and FRα-MTI, respectively). These data indicate that AZD5335 is a promising therapeutic candidate for the treatment of ovarian cancers across the spectrum of FRα-expression.