HLA-B and epilepsy: On the other hand, various efforts were introduced for HLA-B*15:02 screening by MOH and clinicians, including the issuance of a “Dear Healthcare Professional Letter” on HLA-B*15:02 screening prior to CBZ as the standard of care, and its recommendation in product insert in Singapore; a warning inserted on the association of HLA-B*15:02 and SCARs with CBZ use in the Thai clinical practice guideline for epilepsy.