Sarilumab

The main purpose of this study is to: * Learn about the safety of ubamatamab and to find out what dose of ubamatamab can be given alone or with cemiplimab to patients with ovarian cancer or cancer of the uterus * The study will also look at the levels of ubamatamab and/or cemiplimab in the body and measure how well the body can remove the study drug(s). This is called pharmacokinetics * The study will also look at any signs that ubamatamab alone or with cemiplimab can treat recurrent advanced ovarian cancer or cancer of the uterus * To find out how safe and tolerable pretreatment is in combination with ubamatamab and to see how well it works to prevent or minimize Cytokine Release Syndrome (CRS)

This study is researching an experimental drug called ubamatamab, also referred to as "study drug". The study is focused on patients who have advanced ovarian cancer. The aim of the study is to see how safe, tolerable, and effective the study drug is on its own and in combination with other anti-cancer drugs (bevacizumab, cemiplimab, fianlimab and a standard chemotherapy drug, pegylated liposomal doxorubicin \[PLD\]), referred to as "combination drugs'. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug and its experimental combinations * How much study drug and fianlimab is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the drug less effective or could lead to side effects) and its combinations

This study will evaluate two study drugs called ubamatamab and REGN7075, to see if they can help treat advanced or metastatic Non-Small Cell Lung Cancer (NSCLC), and sarilumab, to evaluate to see if it can help with immune-related side effects from ubamatamab. The study is looking at: * How well ubamatamab and REGN7075 works * The side effects that ubamatamab and REGN7075 might cause * How much ubamatamab and REGN7075 is in the blood at different times * If the body makes antibodies to ubamatamab and/or REGN7075, this may cause the ubamatamab to not work as well