scholarly journals Interspecies Scaling of Antibody–Drug Conjugates (ADC) for the Prediction of Human Clearance

Antibodies ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Iftekhar Mahmood
Keyword(s):  
Prediction Error ◽  
Animal Species ◽  
Allometric Scaling ◽  
Pharmacokinetic Parameters ◽  
Antibody Drug Conjugates ◽  
Drug Conjugates ◽  
Human Dose ◽  
Animal Data ◽  
Fold Prediction ◽  
Antibody Drug

Allometric scaling is a useful tool for the extrapolation of pharmacokinetic parameters from animals to humans. The objective of this study was to predict human clearance of antibody–drug conjugates (ADC) allometrically from one to three animal species and compare the predicted human clearance with the observed human clearance. For three animal species allometric scaling, the “Rule of Exponents” (ROE) was used. The results of the study indicated that three-species allometric scaling in association with the ROE provides acceptable prediction (within 0.5–2-fold prediction error) of human clearance. The two-species allometric scaling resulted in substantial prediction error. One-species scaling using a fixed exponent of 1.0 provided acceptable prediction error (within 0.5–2-fold) by monkey, rat, and mouse, in which monkey and rat were comparable. Overall, the predicted human clearance values of ADCs from animal(s) was good. The allometric method proposed in this article can be used to predict human clearance from the animal data and subsequently to select the first-in-human dose of ADCs.

ASCO-GU 2019: Metastasierte Urothelkarzinome

2019 ◽  
Vol 10 (03) ◽  
pp. 140-141
Author(s):  
Alexander Kretzschmar
Keyword(s):  
San Francisco ◽  
Antibody Drug Conjugates ◽  
Drug Conjugates ◽  
Chapel Hill ◽  
Antibody Drug

Die Therapielandschaft des metastasierten Urothelkarzinoms hat sich seit der Zulassung der ersten Immun-Checkpoint-Inhibitoren verändert. Die neuen Therapien sind deutlich effektiver, allerdings erreichen die Responseraten der neuen Therapien nur bis zu etwa 30 %, beklagte Prof. Matthew Milowsky, Chapel Hill/USA, auf einer Oral Abstract Session auf dem ASCO-GU. In San Francisco gaben erste Vorträge und Poster bereits einen Einblick, wovon diejenigen Patienten profitieren könnten, die auf die etablierten Chemotherapien und die neuen Immuntherapien nicht ansprechen. Manche Onkologen sprechen bereits von der „Post-Checkpoint-Ära”. Als Kandidaten werden vor allem Antikörper-Wirkstoff-Konjugate (antibody-drug conjugates; ADC) gehandelt – und zwar nicht nur zur Therapie des metastasierten Blasenkarzinoms.

scholarly journals Application of triple quadrupole mass spectrometry for the characterization of antibody–drug conjugates

2019 ◽  
Vol 411 (12) ◽  
pp. 2569-2576 ◽  
Author(s):  
Malin Källsten ◽  
Matthijs Pijnappel ◽  
Rafael Hartmann ◽  
Fredrik Lehmann ◽  
Lucia Kovac ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Triple Quadrupole ◽  
Quadrupole Mass ◽  
Triple Quadrupole Mass Spectrometry ◽  
Antibody Drug Conjugates ◽  
Quadrupole Mass Spectrometry ◽  
Drug Conjugates ◽  
Antibody Drug

scholarly journals Targeting RON receptor tyrosine kinase for treatment of advanced solid cancers: antibody–drug conjugates as lead drug candidates for clinical trials

2020 ◽  
Vol 12 ◽  
pp. 175883592092006
Author(s):  
Hang-Ping Yao ◽  
Sreedhar Reddy Suthe ◽  
Xiang-Min Tong ◽  
Ming-Hai Wang
Keyword(s):  
Clinical Trials ◽  
Tyrosine Kinase ◽  
Receptor Tyrosine Kinase ◽  
Targeted Therapeutics ◽  
Antibody Drug Conjugates ◽  
Drug Candidates ◽  
Drug Conjugates ◽  
Ron Receptor ◽  
Antibody Drug

The recepteur d’origine nantais (RON) receptor tyrosine kinase, belonging to the mesenchymal-to-epithelial transition proto-oncogene family, has been implicated in the pathogenesis of cancers derived from the colon, lung, breast, and pancreas. These findings lay the foundation for targeting RON for cancer treatment. However, development of RON-targeted therapeutics has not gained sufficient attention for the last decade. Although therapeutic monoclonal antibodies (TMABs) targeting RON have been validated in preclinical studies, results from clinical trials have met with limited success. This outcome diminishes pharmaceutical enthusiasm for further development of RON-targeted therapeutics. Recently, antibody–drug conjugates (ADCs) targeting RON have drawn special attention owing to their increased therapeutic activity. The rationale for developing anti-RON ADCs is based on the observation that cancer cells are not sufficiently addicted to RON signaling for survival. Thus, TMAB-mediated inhibition of RON signaling is ineffective for clinical application. In contrast, anti-RON ADCs combine a target-specific antibody with potent cytotoxins for cancer cell killing. This approach not only overcomes the shortcomings in TMAB-targeted therapies but also holds the promise for advancing anti-RON ADCs into clinical trials. In this review, we discuss the latest advancements in the development of anti-RON ADCs for targeted cancer therapy including drug conjugation profile, pharmacokinetic properties, cytotoxic effect in vitro, efficacy in tumor models, and toxicological activities in primates.

scholarly journals Clinical Pharmacology of Antibody-Drug Conjugates

Antibodies ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 20
Author(s):  
Iftekhar Mahmood
Keyword(s):  
Clinical Pharmacology ◽  
Patient Population ◽  
Inflammatory Diseases ◽  
Biologically Active ◽  
Myelogenous Leukemia ◽  
Optimum Dose ◽  
Antibody Drug Conjugates ◽  
Drug Conjugates ◽  
Selection Of ◽  
Antibody Drug

Antibody-drug conjugates (ADCs) are biopharmaceutical products where a monoclonal antibody is linked to a biologically active drug (a small molecule) forming a conjugate. Since the approval of first ADC (Gemtuzumab ozogamicin (trade name: Mylotarg)) for the treatment of CD33-positive acute myelogenous leukemia, several ADCs have been developed for the treatment of cancer. The goal of an ADC as a cancer agent is to release the cytotoxic drug to kill the tumor cells without harming the normal or healthy cells. With time, it is being realized that ADCS can also be used to manage or cure other diseases such as inflammatory diseases, atherosclerosis, and bacteremia and some research in this direction is ongoing. The focus of this review is on the clinical pharmacology aspects of ADC development. From the selection of an appropriate antibody to the finished product, the entire process of the development of an ADC is a difficult and challenging task. Clinical pharmacology is one of the most important tools of drug development since this tool helps in finding the optimum dose of a product, thus preserving the safety and efficacy of the product in a patient population. Unlike other small or large molecules where only one moiety and/or metabolite(s) is generally measured for the pharmacokinetic profiling, there are several moieties that need to be measured for characterizing the PK profiles of an ADC. Therefore, knowledge and understanding of clinical pharmacology of ADCs is vital for the selection of a safe and efficacious dose in a patient population.

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