Interestingly various donor factors are not associated (or literature is still inconclusive) with negative outcomes: donor/recipient weight ratio between 0.6 and 3.0; bacterial infections, donors killed by the Influenzae virus, diabetes, hypertension, history of anaphylaxis, other tumors, genetic syndromes, history of cardiopulmonary resuscitation, cause of death, use of inotropic agents and vasopressors, electrocardiographic alterations, and troponin, creatine kinase myocardial band, B-type natriuretic peptide (BNP), and pro-BNP levels[14]. The gene discussed is NPPB; the disease is anaphylaxis.