No association of medication (mood stabilizer, antidepressant and antipsychotics) with KITLG methylation was present in the bipolar disorder group: Mood-stabilizers (β = 0.008, t = 1.153, p = 0.255); antidepressants (β = 0.006, t = 0.732, p = 0.468) and antipsychotics (β = −0.008, t = −1.279, p = 0.208), (Model fit: F = 0.937, p = 0.488, R2 = 0.135). Here, KITLG is linked to bipolar disorder.