Allogeneic hMSC Injection in Patients With Hypoplastic Left Heart Syndrome

Inclusion Criteria: * Subjects with hypoplastic left heart syndrome (all types) requiring BDCPA surgery. Exclusion Criteria: * Have HLHS and restrictive or intact atrial septum. * Be undergoing the Norwood procedure that do not have HLHS. * Have significant coronary artery sinusoids. * Require mechanical circulatory support prior to surgery. * Have an underlying evidence of arrhythmia requiring anti-arrhythmia therapy. * Parent or guardian unwilling or unable to comply with necessary follow-up(s) * Be serum positive for HIV, hepatitis BsAg (B Surface Antigen) or viremic hepatitis C. * Be unsuitable for inclusion in the study, in the opinion of the investigator. * Need for concomitant surgery for aortic coarctation or tricuspid valve repair.