Hemoglobin subunit beta pseudogene 1 (HBBP1)

Hemoglobin subunit beta pseudogene 1 (HBBP1) is a member of the beta-globin gene cluster on chromosome 11. Originally classified as a non-functional pseudogene due to mutations that prevent the production of a protein product, HBBP1 is now recognized as a functionally important genomic element[2][3]. It transcribes regulatory RNAs that contribute to the control of hemoglobin gene expression, particularly in early embryonic erythropoiesis[1][2][3][5]. HBBP1 is essential for human red blood cell development, acting through interactions with RNA-binding proteins (such as HNRNPA1) and transcriptional regulators (such as TAL1), ultimately influencing the expression of hemoglobin genes[2][5]. While HBBP1 does not encode a protein, point mutations in this region are associated with disease phenotypes, notably a milder expression of beta-thalassemia and variable fetal hemoglobin levels in sickle cell disease patients[2][3][7]. Despite its regulatory importance, HBBP1 is not a therapeutic target for small molecules or biologic drugs, and it has no known drug interactions. It instead serves as a genetic locus important for understanding blood diseases and gene regulation within the globin gene family.

Other names

HBH1HBHPHBHpspseudo β