Laboratory tests showed marked leukocytosis (27,600/μL) with severe eosinophilia (17,940/μL), elevated creatine kinase, normal Krebs von den Lungen-6, elevated surfactant protein-D, markedly elevated serum immunoglobulin E, and negative proteinase 3- and myeloperoxidase-anti-neutrophil cytoplasmic antibody. The gene discussed is SFTPD; the disease is Increased total eosinophil count.