Patients who experienced jaundice post-COVID-19 vaccination were more likely to have raised bilirubin (n = 7) [72–75, 81, 90, 125], raised liver enzymes (n = 5) [72, 74, 81, 90, 125], thrombocytopenia (n = 4) [71, 72, 74], high reticulocyte count (n = 4) [71–73, 75], low Hb (n = 4) [71–73, 75], and high LDH (n = 3) [71, 74, 75]. The gene discussed is GSTM1; the disease is Thrombocytopenia.