Compression Stockings to Prevent Peripheral Neuropathy Caused by Antibody-Drug Conjugates in Urothelial Carcinoma Patients

Inclusion Criteria: * Age ≥ 18 years Histologically or cytologically confirmed advanced malignancy (including but not limited to urothelial carcinoma) eligible for MMAE-containing ADC therapy (e.g., EV, DV, BV) * ECOG performance status 0-2 * No baseline peripheral neuropathy ≥ Grade 1 (CTCAE v5.0) * Stable tumor status without other neurotoxic drugs in the past 2 months * Adequate organ function (blood counts, liver and kidney function) per protocol * Expected survival ≥ 3 months * Ability and willingness to comply with study procedures and provide written informed consent Exclusion Criteria: * Poor compliance or inability to follow protocol * Pre-existing peripheral neuropathy ≥ Grade 1 from prior platinum/taxane treatment * Severe diabetes or peripheral vascular disease * Neurological disorders causing nerve compression (e.g., carpal tunnel syndrome, radiculopathy) * Severe psychiatric conditions (depression, bipolar disorder, substance abuse) * Active uncontrolled infections requiring systemic antibiotics/antifungals/antivirals (≥ CTCAE Grade 2) * Active hepatitis or significant liver dysfunction not meeting inclusion criteria * Renal failure requiring dialysis * Immunodeficiency or history of organ transplantation * Severe nausea, headache, fatigue, or other debilitating symptoms * Active tuberculosis or uncontrolled pleural/pericardial effusion/ascites * Hypersensitivity to monoclonal antibodies or study device components * Participation in other clinical trials within 4 weeks * Known bleeding or coagulation disorders or receiving thrombolytic therapy * Any other condition judged by the investigator to preclude safe participation