Autism patients are known to have higher genetic susceptibility to cancer. However, cancer rates are lower in autism patients. Cancer cells need folate for rapid growth. So they express more folate receptor alpha (FRA) proteins on their surface that helps transport folate. Thus treatments that target these FRA proteins with antibodies are an experimental cure for cancer. 75% of autism patients test positive for folate receptor alpha antibodies (FRAA).⁠ This explains why autism patients have lower rates of cancer. FRA proteins are present in cow's milk. Casein and casamino acids are cow's milk derived proteins used in the manufacture of vaccines. So numerous vaccines are contaminated with cow's milk proteins. Such cow's milk contaminated vaccines can cause the synthesis of FRAA which can protect against cancer and cause the development of autism.