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Ref Type	Journal Article
PMID	(29848572)
Authors	Thompson JA, Motzer RJ, Molina AM, Choueiri TK, Heath EI, Redman BG, Sangha RS, Ernst DS, Pili R, Kim SK, Reyno L, Wiseman A, Trave F, Anand B, Morrison K, Doñate F, Kollmannsberger CK
Title	Phase I Trials of Anti-ENPP3 Antibody-Drug Conjugates in Advanced Refractory Renal Cell Carcinomas.
Journal	Clinical cancer research : an official journal of the American Association for Cancer Research
Vol	24
Issue	18
Date	2018 Sep 15
URL
Abstract Text	Purpose: To determine the safety, pharmacokinetics, and recommended phase II dose of an antibody-drug conjugate (ADC) targeting ectonucleotide phosphodiesterases-pyrophosphatase 3 (ENPP3) conjugated to monomethyl auristatin F (MMAF) in subjects with advanced metastatic renal cell carcinoma (mRCC).Patients and Methods: Two phase I studies were conducted sequentially with 2 ADCs considered equivalent, hybridoma-derived AGS-16M8F and Chinese hamster ovary-derived AGS-16C3F. AGS-16M8F was administered intravenously every 3 weeks at 5 dose levels ranging from 0.6 to 4.8 mg/kg until unacceptable toxicity or progression. The study was terminated before reaching the MTD. A second study with AGS-16C3F started with the AGS-16M8F bridging dose of 4.8 mg/kg given every 3 weeks.Results: The AGS-16M8F study (n = 26) closed before reaching the MTD. The median duration of treatment was 12 weeks (1.7-83 weeks). One subject had durable partial response (PR; 83 weeks) and 1 subject had prolonged stable disease (48 weeks). In the AGS-16C3F study (n = 34), the protocol-defined MTD was 3.6 mg/kg, but this was not tolerated in multiple doses. Reversible keratopathy was dose limiting and required multiple dose deescalations. The 1.8 mg/kg dose was determined to be safe and was associated with clinically relevant signs of antitumor response. Three of 13 subjects at 1.8 mg/kg had durable PRs (range, 100-143 weeks). Eight subjects at 2.7 mg/kg and 1.8 mg/kg had disease control >37 weeks (37.5-141 weeks).Conclusions: AGS-16C3F was tolerated and had durable antitumor activity at 1.8 mg/kg every 3 weeks. Clin Cancer Res; 24(18); 4399-406. ©2018 AACR.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References
Unknown unknown	renal cell carcinoma	not applicable	AGS16F	Phase I	Actionable	In a Phase I trial, treatment with AGS16F (AGS-16CSF) at the recommended phase 2 dose demonstrated safety and resulted in a partial response in 23% (3/13) of patients with metastatic renal cell carcinoma including 2 patients with clear cell and 1 patient with papillary histology, and a disease control rate of 92% (12/13) (PMID: 29848572).	29848572