Figure 1

Immunohistochemical staining for MCL1 in two patient samples demonstrated moderate (left, patient 2) and moderate-to-strong (right, patient 6) cytoplasmic staining. Both patients had unique MCL1 and JUN coamplification in samples of pseudomyxoma peritonei tested by next-generation genetic sequencing (original magnification × 200, left; × 100, right).