After controlling for other factors, including significant ones (i.e., age, ATD class, ATD-naïve status, and time), the plasma 5HIAA/5HT ratio was significantly associated with the MAOB rs1799836 genetic polymorphism (F1,133 = 5.92, p = 0.016) (see Table 6). The gene discussed is MAOB; the disease is Jeune syndrome.