Infective intracardiac lesion in the setting of Mycobacterium franklinii bacteremia identified by cell-free DNA sequencing in a child with acute lymphoblastic leukemia: A potential new foe in intracardiac infections.

Mycobacterium franklinii (Mfra) is a recently identified member of the Mycobacterium chelonae-abscessus complex (MCAC), a rapidly growing, acid-fast bacilli that have the potential to cause invasive human infections. Identification of Mfra is crucial for selecting the appropriate antimicrobial therapy, as Mfra displays a unique susceptibility profile compared to other MCAC members. The literature on Mfra is limited, with a few studies focusing on respiratory and skin infections.