However, the combinatorial host-response biomarker signature “BV score” and its subanalytes tumor necrosis factor–related apoptosis-inducing ligand (TRAIL), interferon-γ inducible protein 10 (IP-10, also known as CXCL10), and C-reactive protein (CRP) have been understudied in infections with Mycoplasma pneumoniae (Mp), a major bacterial cause of community-acquired pneumonia (CAP) in children [3]. Here, CXCL10 is linked to infection.