HMOX1 and Hyperbilirubinemia: Considering the varied genetic makeup of Indonesia and Southeast Asian populations, even compared to Indian and East Asian populations, further studies in not only UGT1A1, but other genes, e.g., HMOX1, BLVRA, and SLCO1B1, especially those closely-related with hyperbilirubinemia or drug delivery are warranted (46–48).