 Although not exclusive to laminin 332 MPP, the detection of antibodies bound to the dermal side of basement membrane zone-split (salt-split) skin suggests the possibility of this diagnosis.Until definitive testing for laminin 332 antibodies becomes available, we recommend that patients with MMP in whom serum indirect immunofluorescence (IIF) studies reveal antibodies bound to the dermal side of basement membrane zone-split skin undergo age and gender appropriate cancer screening.Additional evaluation for malignancy should be performed as indicated based upon a review of symptoms, physical examination, and the results of age-appropriate screening.