In addition, the risk of neutropenia did not differ significantly between patients with the UGT1A1<sup>*</sup>1/<sup>*</sup>28 and UGT1A1<sup>*</sup>28/<sup>*</sup>28 genotypes compared to those with the UGT1A1<sup>*</sup>1/<sup>*</sup>1 genotype (<i>P</i> > 0.05).<h4>Conclusion</h4>The combined analysis supports an elevated risk of neutropenia associated with SG. Here, UGT1A1 is linked to Decreased total neutrophil count.