Genes with false-discovery TWAS q < 0.15 were UGT1A3, SLC6A13, EIF3I, UGT1A2P, and CLDN3. The TWAS analysis also identified increased MFAP5 expression at suggestive significance (p < 0.0003, q = 0.17) associated with decreased risk of neutropenia. Here, UGT1A2P is linked to neutropenia.