OH2 Injection in Combination With HX008 for Melanoma.

Inclusion criteria

• ✓. The non-operative stage III or stage IV malignant tumor patients with clear diagnosis by pathology.
• ✓. Patients who have failed in conventional treatment (including PD-1 monotherapy) (disease progression or intolerance) or who have failed in previously assisted PD-1 monotherapy (last assisted PD-1 treatment relapse or metastasis within 6 months).
• ✓. Patients with Eastern Collaborative Oncology Group (ECOG) Performance Status ≤ 1, expected survival time more than 3 months.
• ✓. Prior anti-tumor treatment (including endocrine, chemical/ radiotherapy,targeted therapy) was over 4 weeks (more than 6 weeks of discontinuation using nitroso-and mitomycin-based chemotherapy) and was recovered to grade 1 from the side effects of prior treatment.
• ✓. There is at least one measurable lesion that is suitable for intratumoral injection. The measured tumor focus is defined as the longest diameter ≥ 5 mm.
• ✓. Asymptomatic central nervous system metastasis, or treated asymptomatic brain metastasis patients, must be examined by a computerized fault scan (CT) or MRI for disease-free progression, stable for at least 3 months, and at least 4 weeks without steroid medication.
• ✓. (a) WBC≥3.0×109／L，ANC≥2.0×109／L ，PLT≥100×109／L，Hb≥90 g/L； (b) BUN and Scr. were in the upper limit of 1.5 times of the normal value; (c) TBIL≤ 1.5 times the upper limit of the normal value. (d) ALT and AST ≤ 2.5 times the upper limit of normal value; The value of patients with liver metastasis did not exceed 5 times the upper limit of normal value. (e) Coagulation function is normal (PT and APPT are within 1.5 times of the upper limit of normal value).
• ✓. Female subjects and their spouses received effective contraceptives during and within 3 months of treatment.

Exclusion criteria