MYO18B and neoplasm: In a human squamous cell lung carcinoma cell line, Lu24, a homozygous deletion on chromosome 22q12.1 suggested the presence of a tumor suppressor gene within the deletion, ultimately leading to the identification of a novel myosin gene, denoted MYO18B, which is structurally related to MYO18A (Nishioka et al., 2002).