A comprehensive literature search of the PubMed and Embase electronic databases was performed (Figure 1). Search terms consisted of “granulocyte-macrophage colony-stimulating factor” OR “GM-CSF” OR “recombinant granulocyte-macrophage colony-stimulating factor” OR “sargramostim” OR “molgramostim” OR “regramostim” AND “fungal infection” OR “mycosis” AND “case report” to identify case reports published in the English language between January 1, 1990, and March 1, 2022, that evaluated use of rhu GM-CSF as adjunctive therapy in patients with IFDs. Additional studies identified on review of pertinent literature were also included. All cases in which the pathogen, treatment, and efficacy could be fully assessed were included; cases were excluded if no infectious organism was identified. Cases involving rhu GM-CSF for treatment of bacterial, viral, or parasitic infections were excluded.