TBX5 and retinopathy of prematurity: Additionally, suggestive association has been reported between AGTR1 (encodes angiotensin II type I receptor), IHH (Indian Hedgehog), TBX-5 (T-box 5), glycoprotein Ib alpha polypeptide (GP1BA) and cholesterol ester transfer protein (CETP) and development of ROP [42].