pylori) eradication treatment, and many of them contain an API2-MALT1 chimeric transcript mediated by t(11;18)(q21;q21) translocation.     ///    Gastric MALT lymphoma characterized by unresponsiveness to antibacterial treatment contains all API2-MALT1 chimeric transcript-positive cases and may constitute a distinct group often seen with nodal involvement and an advanced clinical stage.     ///    All cases were examined for API2-MALT1 chimeric transcript by means of RT-PCR and sequencing analyses using RNA extracted from tissues.     ///    "pylori infection status, responsiveness to antibacterial treatment, and API2-MALT1 chimeric transcript of gastric MALT lymphoma in a unicenter study experience and discuss the clinicopathologic significance of API2-MALT1 chimeric transcript in gastric MALT lymphoma. "    ///    "pylori or API2-MALT1 chimeric transcript status revealed a lesser number of the statistically significant factors (two and three, respectively). "    ///    "pylori infection, API2-MALT1 chimeric transcript, cobblestone mucosa and submucosal tumor in gross appearance, nodal involvement, and clinical stage) were statistically significant. "    ///    "API2-MALT1 chimeric transcript was detected in 9 patients, all of whom showed no change in response to treatment. "