Phase 1 Safety and Tolerability Study of ALN-F1202 in Healthy Adults

Key Inclusion Criteria: 1. Has a body mass index between 18 and 32 kg/m2, inclusive 2. Is judged by the investigator to be in good health based on medical history, physical examination, vital sign measurements, and electrocardiograms (ECGs) performed at screening and/or prior to administration of initial dose of study drug 3. Is in good health based on laboratory safety testing obtained at the screening visit, as described in the protocol 4. Normal aPTT, normal PT, and normal platelet counts at screening period and at day -1 as defined by the local laboratory 5. Hemoglobin values at screening period and at day -1 as described in the protocol Key Exclusion Criteria: 1. History of any major surgical procedure or clinically significant physical trauma, in the opinion of the investigator, that may pose a risk to the participant by study participation 2. Whole blood donation within the previous 56 days or plasma donation within the previous 7 days prior to screening 3. History of clinically significant bleeding, requiring hospitalization or blood products, that in the opinion of the investigator may pose a risk to the participant by study participation 4. History of bleeding diathesis as described in the protocol 5. Members of the clinical site study team and/or his/her immediate family, unless prior approval granted by the sponsor 6. Presents any concern to the study investigator that might confound the results of the study or poses an additional risk to the participant by their participation in the study NOTE: Other protocol-defined inclusion/exclusion criteria apply