A Study of RC48-ADC Combined with JS001 for Postoperative Adjuvant Treatment of Upper Tract Urothelial Carcinoma

Inclusion Criteria:

* Written informed consent
* ≥18 years of age
* Post radical nephro-ureterectomy for upper tract tumour with predominant TCC component-squamoid differentiation or mixed TCC/SCC is permitted.
* Histologically confirmed TCC staged pT2-pT4 pN0-2 M0 or pTany N1-2 M0 (providing all grossly abnormal nodes are resected).
* Pathological tissue immunohistochemistry HER2 2\~3+
* Fit and willing to receive adjuvant therapy with first cycle to be commenced within 90 days of radical nephro-ureterectomy if allocated
* ECOG(Eastern Cooperative Oncology Group) performance is 0\~2.
* Available for long-term follow-up

Exclusion Criteria:

* Evidence of distant metastases
* Pure adenocarcinoma, squamous cell carcinoma or small cell or other variant histology
* Un-resected macroscopic nodal disease
* Concurrent muscle invasive bladder cancer (patients with concurrent Non-muscle invasive bladder cancer (NMIBC) will be eligible)
* Significant co-morbid conditions that would interfere with administration of protocol treatment
* Pregnancy; lactating women or women of childbearing potential unwilling or unable to use adequate non-hormonal contraception (male patients should also use contraception if sexually active);
* Previous malignancy in the last 5 years except for previous NMIBC, adequately controlled non melanoma skin tumours, CIS of cervix or LCIS of breast or localised prostate cancer in patients who have a life expectancy of over 5 years upon trial entry.