case_images: PMC6711359_01
case_images: The ecthyma gangrenosum with poor peripheral perfusion over the patient's bilateral legs.
case_images: fimmu-10-01953-g0001.jpg
case_images: PMC6711359_01_fimmu-10-01953-g0001.jpg
case_images: F1
case_images: The skin rash in his lower legs progressed, and some lesions became necrosis (Figure 1).
case_images: The genetic analysis of BTK gene indicated that the hemizygous c.1632-1G>A mutation of BTK gene in the patient and the heterozygous c.1632-1G>A mutation of BTK gene in his mother.
case_images: fimmu-10-01953-g0002.jpg
case_images: PMC6711359_01_fimmu-10-01953-g0002.jpg
case_images: F2
case_images: Genetic analysis revealed a novel hemizygous c.1632-1G>A mutation in the BTK gene of the patient (Figure 2).