SGH and NUH are participating in a gene therapy trial by CSL Behring and the trial would be open for recruitment soon. This is the link for Study Details | Efficacy and Safety of CSL222 (Etranacogene Dezaparvovec) Gene Therapy in Adults With Hemophilia B With Pretreatment Adeno-associated Virus Serotype 5 (AAV5) Neutralizing Antibodies (Nabs) | ClinicalTrials.gov. You can contact your doctor for more details.