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Ref Type | Journal Article | ||||||||||||
PMID | (32179633) | ||||||||||||
Authors | Naing A, Gainor JF, Gelderblom H, Forde PM, Butler MO, Lin CC, Sharma S, Ochoa de Olza M, Varga A, Taylor M, Schellens JHM, Wu H, Sun H, Silva AP, Faris J, Mataraza J, Cameron S, Bauer TM | ||||||||||||
Title | A first-in-human phase 1 dose escalation study of spartalizumab (PDR001), an anti-PD-1 antibody, in patients with advanced solid tumors. | ||||||||||||
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Abstract Text | Spartalizumab is a humanized IgG4κ monoclonal antibody that binds programmed death-1 (PD-1) and blocks its interaction with PD-L1 and PD-L2. This phase 1/2 study was designed to assess the safety, pharmacokinetics, and preliminary efficacy of spartalizumab in patients with advanced or metastatic solid tumors.In the phase 1 part of the study, 58 patients received spartalizumab, intravenously, at doses of 1, 3, or 10 mg/kg, administered every 2 weeks (Q2W), or 3 or 5 mg/kg every 4 weeks (Q4W).Patients had a wide range of tumor types, most commonly sarcoma (28%) and metastatic renal cell carcinoma (10%); other tumor types were reported in ≤3 patients each. Most patients (93%) had received prior antineoplastic therapy (median three prior lines) and two-thirds of the population had tumor biopsies negative for PD-L1 expression at baseline. The maximum tolerated dose was not reached. The recommended phase 2 doses were selected as 400 mg Q4W or 300 mg Q3W. No dose-limiting toxicities were observed, and adverse events included those typical of other PD-1 antibodies. The most common treatment-related adverse events of any grade were fatigue (22%), diarrhea (17%), pruritus (14%), hypothyroidism (10%), and nausea (10%). Partial responses occurred in two patients (response rate 3.4%); one with atypical carcinoid tumor of the lung and one with anal cancer. Paired tumor biopsies from patients taken at baseline and on treatment suggested an on-treatment increase in CD8+ lymphocyte infiltration in patients with clinical benefit.Spartalizumab was well tolerated at all doses tested in patients with previously treated advanced solid tumors. On-treatment immune activation was seen in tumor biopsies; however, limited clinical activity was reported in this heavily pretreated, heterogeneous population. The phase 2 part of this study is ongoing in select tumor types.NCT02404441. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Spartalizumab | Spartalizumab | 2 | 10 |
Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Spartalizumab | PDR001|PDR-001 | Immune Checkpoint Inhibitor 149 PD-L1/PD-1 antibody 122 | Spartalizumab (PDR001) is a monoclonal antibody that targets PD-1 (PDCD1) and inhibits binding of the PD-L1 (CD274) ligand, potentially resulting in enhanced anti-tumor immune response (PMID: 32364844, PMID: 32179633). |
Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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CD274 positive | anal canal cancer | predicted - sensitive | Spartalizumab | Case Reports/Case Series | Actionable | In a Phase I trial, Spartalizumab (PDR001) treatment in a patient with CD274 (PD-L1)-positive anal cancer resulted in a partial response lasting 1.8 months, with a combined 31% reduction of target lesion size (PMID: 32179633; NCT02404441). | 32179633 |