Cold Agglutinin Disease Real World Evidence Registry

Inclusion Criteria:

Patient aged ≥18 years
Patient able to understand the purpose of the study and who (or whose legally authorized representative) provided signed and dated informed consent and authorization to use protected health information in accordance with national and local subject privacy regulations
Patient with a diagnosis of CAD or CAS as per Investigator judgment based on the diagnosis criteria listed in study protocol

Exclusion Criteria:

Patient with mixed warm and cold autoimmune hemolytic anemia, or warm autoimmune hemolytic anemia
Patient actively participating in a CAD or CAS interventional clinical trial. After a patient completes participation in said trial, he/she may be eligible for enrollment in this registry.