CXCL13 and MALT lymphoma: This interaction plays a significant role in the pathophysiology of MALT lymphoma, a finding that aligns with previous research that has reported the expression of CXCL13 and CXCR5 in ocular adnexal MALT lymphoma, suggesting their potential role in mediating lymphocyte homing and retention within the ocular adnexa (38, 39).