We previously found that osimertinib combined with bevacizumab had a synergistic effect by modulating E-cadherin levels and increasing osimertinib levels in the brain, resulting in a significant difference in OS between LM patients treated with osimertinib combined with bevacizumab and osimertinib alone (p = 0.046) [27]. Here, CDH1 is linked to lymphangioma.