Safety and Efficacy of Anti-CD47, ALX148 in Combination With Liposomal Doxorubicin and Pembrolizumab in Recurrent Platinum-resistant Ovarian Cancer (NCT05467670)

Usually NOT eligible if any of the following apply:

• Exclusion Criteria:
• Patients with sarcoma or carcinosarcoma or low-grade carcinoma.
• Patients with primary platinum-refractory carcinoma who progressed while on or within 3 months of primary platinum-based combination therapy at first line setting.
• Prior systemic anti-cancer therapy including investigational agents within 4 weeks \[can be in follow-up phase of prior study and could consider shorter interval for kinase inhibitors or other short half-life drugs\] prior to \[randomization /allocation\]. AEs due to previous therapies will be evaluated for eligibility. Recovery from complications due to prior must be adequate.
• Prior radiotherapy within 2 weeks of start of study intervention. Participants must have recovered from all radiation-related toxicities, not require corticosteroids, and not have had radiation pneumonitis. A 1-week washout is permitted for palliative radiation (≤2 weeks of radiotherapy) to non-CNS disease.
• Has known active CNS metastases and/or carcinomatous meningitis. Participants with previously treated brain metastases may participate provided they are radiologically stable, i.e. without evidence of progression for at least 4 weeks by repeat imaging (note that the repeat imaging should be performed during study screening), clinically stable and without requirement of steroid treatment for at least 14 days prior to first dose of study intervention.
• Known symptomatic brain metastases requiring steroids. Patients with previously diagnosed brain metastases are eligible if they have completed their treatment and have recovered from the acute effects of radiation therapy or surgery prior to study enrollment, have discontinued corticosteroid treatment for these metastases for at least 4 weeks and are neurologically stable with no evidence of disease progression for 3 months.
• Patients having received prior therapy with PD1, PDL1, CTLA4 inhibitors, CD47 or SIRP1- α inhibitors or with an agent directed to another stimulatory or co-inhibitory T-cell receptor (eg, CTLA-4, OX 40, CD137), or other immunotherapeutic agents.
• Prior therapy with PLD. Patients who received PLD in combination with platinum in platinum sensitive setting are allowed if they had initial objective complete response and PLD-platinum free interval of 6 months or more.
• Active autoimmune disease that might deteriorate when receiving an immune-stimulatory agent. Patients with diabetes type I, vitiligo, psoriasis, hypo- or hyperthyroid disease not requiring immunosuppressive treatment are eligible.
• Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing ≥ 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of study drug.
• Has active autoimmune disease that has required systemic treatment in the past 2 years (with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (eg., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment and is allowed.