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Saber H, Thompson MD, Leighton JK. Pharmacokinetic models for first-in-human dose selection of immune-activating products in oncology. Regul Toxicol Pharmacol 2024; 149:105616. [PMID: 38561147 DOI: 10.1016/j.yrtph.2024.105616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/06/2024] [Accepted: 03/27/2024] [Indexed: 04/04/2024]
Abstract
Pharmacokinetic (PK) models are increasingly submitted to the FDA to support first-in-human (FIH) dose selection of immune-oncology products. To examine whether a simple PK modeling (SPM) using clearance for scaling was acceptable for dose estimation, FIH(SPM) doses were computed and compared to doses that were safely administered to patients. We concluded that the SPM approach is acceptable in FIH dose estimation, but the variables should be carefully selected for CD3 constructs. For CD3 constructs, use of 60 kg BWh, a clearance exponent of 0.75, and a targeted plasma concentration based on relevant and/or sensitive activity assays was an acceptable approach for FIH dose selection; use of 0.85 as the scaling factor is questionable at this time as it resulted in a FIH dose that was too close to the AHD for one product (7%). Immune activating mAbs were not sensitive to changes in the clearance exponent (0.75-0.85) or body weight (60-70 kg). For PD-1/PD-L1 mAbs, using products' in vitro EC50 in the model resulted in suboptimal FIH doses and clinical data of closely related products informed FIH dose selection. PK models submitted by sponsors were diverse in methods, assumptions, and variables, and the resulting FIH doses were not always optimal.
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Affiliation(s)
- Haleh Saber
- US Food and Drug Administration, Center for Drug Evaluation and Research, Office of Oncologic Diseases, 10903 New Hampshire Ave, Silver Spring, MD, 20903, United States.
| | - Matthew D Thompson
- US Food and Drug Administration, Center for Drug Evaluation and Research, Office of Oncologic Diseases, 10903 New Hampshire Ave, Silver Spring, MD, 20903, United States
| | - John K Leighton
- US Food and Drug Administration, Center for Drug Evaluation and Research, Office of Oncologic Diseases, 10903 New Hampshire Ave, Silver Spring, MD, 20903, United States
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2
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Jiang Z, Sun W, Du R, Yang R. A review of dose escalation for FDA-approved products treating solid tumors and hematological malignancies in first-in-human trials. Clin Transl Oncol 2024:10.1007/s12094-024-03451-2. [PMID: 38558284 DOI: 10.1007/s12094-024-03451-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
First-in-human (FIH) dose-escalation trials on oncology should prioritize safety and emphasize efficacy. We reviewed the FIH trials of 67 anti-tumor products approved by the Food and Drug Administration between 2018 and 2023 and found that the "3 + 3" design remains the predominant dose-escalation method (66.2%). The number of patients receiving sub-therapeutic doses is positively correlated with the maximum tolerated dose (MTD) or maximum dose (MD) to starting dose ratio (P = 0.056) and the number of dose levels in trials (P < 0.001). In addition, the proportion of products with a high ratio in antibody drugs is higher than that in small molecules (P < 0.001). The MTD or MD exceeded the label dose by three or more doses in 22.03% of the products. In conclusion, optimizing the starting dose selection method, refining the way of determining doses, and finding alternative indicators to replace toxicity as the endpoints will increase the effectiveness and broaden the beneficiary scope.
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Affiliation(s)
- Zehui Jiang
- Gobroad Healthcare Group, 20 Lize Road, Beijing, 100073, China
| | - Wenxuan Sun
- Gobroad Healthcare Group, 20 Lize Road, Beijing, 100073, China
| | - Rui Du
- Gobroad Healthcare Group, 20 Lize Road, Beijing, 100073, China
| | - Rui Yang
- Gobroad Healthcare Group, 20 Lize Road, Beijing, 100073, China.
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3
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Joseph N, Shapiro A, Gillis E, Barkey S, Abu-Horowitz A, Bachelet I, Mizrahi B. Biodistribution and function of coupled polymer-DNA origami nanostructures. Sci Rep 2023; 13:19567. [PMID: 37949918 PMCID: PMC10638432 DOI: 10.1038/s41598-023-46351-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023] Open
Abstract
Spatial control over the distribution of therapeutics is a highly desired feature, which could limit the side effects of many drugs. Here we describe a nanoscale agent, fabricated from a coupled polymer-DNA origami hybrid that exhibits stability in serum and slow diffusion through tissues, in a manner correlating with shape and aspect ratio. Coupling to fragments of polyethylene glycol (PEG) through polyamine electrostatic interactions resulted in marked stability of the agents in-vivo, with > 90% of the agents maintaining structural integrity 5 days following subcutaneous injection. An agent functionalized with aptamers specific for human tumor necrosis factor TNF-alpha, significantly abrogated the inflammatory response in a delayed-type hypersensitivity model in humanized TNF-alpha mice. These findings highlight polymer-DNA hybrid nanostructures as a programmable and pharmacologically viable update to mainstream technologies such as monoclonal antibodies, capable of exerting an additional layer of control across the spatial dimension of drug activity.
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Affiliation(s)
- Noah Joseph
- Augmanity Nano Ltd., 7670308, Rehovot, Israel
| | - Anastasia Shapiro
- Augmanity Nano Ltd., 7670308, Rehovot, Israel.
- Faculty of Biotechnology and Food Engineering, 32000, Technion, Haifa, Israel.
| | - Ella Gillis
- Augmanity Nano Ltd., 7670308, Rehovot, Israel
| | | | | | | | - Boaz Mizrahi
- Faculty of Biotechnology and Food Engineering, 32000, Technion, Haifa, Israel
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4
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Yadav R, Sukumaran S, Lutman J, Mitra MS, Halpern W, Sun T, Setiadi AF, Neighbors M, Sheng XR, Yip V, Shen BQ, Liu C, Han L, Ovacik AM, Wu Y, Glickstein S, Kunder R, Arron JR, Pan L, Kamath AV, Stefanich EG. Utilizing PK and PD Biomarkers to Guide the First-in-Human Starting Dose Selection of MTBT1466A: A Novel Humanized Monoclonal Anti-TGFβ3 Antibody for the Treatment of Fibrotic Diseases. J Pharm Sci 2023; 112:2910-2920. [PMID: 37429356 DOI: 10.1016/j.xphs.2023.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/03/2023] [Accepted: 07/03/2023] [Indexed: 07/12/2023]
Abstract
MTBT1466A is a high-affinity TGFβ3-specific humanized IgG1 monoclonal antibody with reduced Fc effector function, currently under investigation in clinical trials as a potential anti-fibrotic therapy. Here, we characterized the pharmacokinetics (PK) and pharmacodynamics (PD) of MTBT1466A in mice and monkeys and predicted the PK/PD of MTBT1466A in humans to guide the selection of the first-in-human (FIH) starting dose. MTBT1466A demonstrated a typical IgG1-like biphasic PK profile in monkeys, and the predicted human clearance of 2.69 mL/day/kg and t1/2 of 20.4 days are consistent with those expected for a human IgG1 antibody. In a mouse model of bleomycin-induced lung fibrosis, changes in expression of TGFβ3-related genes, serpine1, fibronectin-1, and collagen 1A1 were used as PD biomarkers to determine the minimum pharmacologically active dose of 1 mg/kg. Unlike in the fibrosis mouse model, evidence of target engagement in healthy monkeys was only observed at higher doses. Using a PKPD-guided approach, the recommended FIH dose of 50 mg, IV, provided exposures that were shown to be safe and well tolerated in healthy volunteers. MTBT1466A PK in healthy volunteers was predicted reasonably well using a PK model with allometric scaling of PK parameters from monkey data. Taken together, this work provides insights into the PK/PD behavior of MTBT1466A in preclinical species, and supports the translatability of the preclinical data into the clinic.
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Affiliation(s)
- Rajbharan Yadav
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA.
| | - Siddharth Sukumaran
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA
| | - Jeff Lutman
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA
| | - Mayur S Mitra
- Safety Assessment, Genentech Inc., South San Francisco, CA, USA
| | - Wendy Halpern
- Safety Assessment, Genentech Inc., South San Francisco, CA, USA
| | - Tianhe Sun
- Immunology Discovery, Genentech Inc., South San Francisco, CA, USA
| | | | | | - X Rebecca Sheng
- Translational Medicine, Genentech Inc., South San Francisco, CA, USA
| | - Victor Yip
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA
| | - Ben-Quan Shen
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA
| | - Chang Liu
- BioAnalytical Sciences, Genentech Inc., South San Francisco, CA, USA
| | - Lyrialle Han
- Clinical Pharmacology, Genentech Inc., South San Francisco, CA, USA
| | - Ayse Meric Ovacik
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA
| | - Yan Wu
- Antibody Engineering, Genentech Inc., South San Francisco, CA, USA
| | - Sara Glickstein
- Early Clinical Development, Genentech Inc, South San Francisco, CA, USA
| | - Rebecca Kunder
- Early Clinical Development, Genentech Inc, South San Francisco, CA, USA
| | - Joseph R Arron
- Immunology Discovery, Genentech Inc., South San Francisco, CA, USA
| | - Lin Pan
- Clinical Pharmacology, Genentech Inc., South San Francisco, CA, USA
| | - Amrita V Kamath
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA
| | - Eric G Stefanich
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech Inc., South San Francisco, CA, USA.
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5
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Solovyeva O, Dimairo M, Weir CJ, Hee SW, Espinasse A, Ursino M, Patel D, Kightley A, Hughes S, Jaki T, Mander A, Evans TRJ, Lee S, Hopewell S, Rantell KR, Chan AW, Bedding A, Stephens R, Richards D, Roberts L, Kirkpatrick J, de Bono J, Yap C. Development of consensus-driven SPIRIT and CONSORT extensions for early phase dose-finding trials: the DEFINE study. BMC Med 2023; 21:246. [PMID: 37408015 PMCID: PMC10324137 DOI: 10.1186/s12916-023-02937-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/12/2023] [Indexed: 07/07/2023] Open
Abstract
BACKGROUND Early phase dose-finding (EPDF) trials are crucial for the development of a new intervention and influence whether it should be investigated in further trials. Guidance exists for clinical trial protocols and completed trial reports in the SPIRIT and CONSORT guidelines, respectively. However, both guidelines and their extensions do not adequately address the characteristics of EPDF trials. Building on the SPIRIT and CONSORT checklists, the DEFINE study aims to develop international consensus-driven guidelines for EPDF trial protocols (SPIRIT-DEFINE) and reports (CONSORT-DEFINE). METHODS The initial generation of candidate items was informed by reviewing published EPDF trial reports. The early draft items were refined further through a review of the published and grey literature, analysis of real-world examples, citation and reference searches, and expert recommendations, followed by a two-round modified Delphi process. Patient and public involvement and engagement (PPIE) was pursued concurrently with the quantitative and thematic analysis of Delphi participants' feedback. RESULTS The Delphi survey included 79 new or modified SPIRIT-DEFINE (n = 36) and CONSORT-DEFINE (n = 43) extension candidate items. In Round One, 206 interdisciplinary stakeholders from 24 countries voted and 151 stakeholders voted in Round Two. Following Round One feedback, one item for CONSORT-DEFINE was added in Round Two. Of the 80 items, 60 met the threshold for inclusion (≥ 70% of respondents voted critical: 26 SPIRIT-DEFINE, 34 CONSORT-DEFINE), with the remaining 20 items to be further discussed at the consensus meeting. The parallel PPIE work resulted in the development of an EPDF lay summary toolkit consisting of a template with guidance notes and an exemplar. CONCLUSIONS By detailing the development journey of the DEFINE study and the decisions undertaken, we envision that this will enhance understanding and help researchers in the development of future guidelines. The SPIRIT-DEFINE and CONSORT-DEFINE guidelines will allow investigators to effectively address essential items that should be present in EPDF trial protocols and reports, thereby promoting transparency, comprehensiveness, and reproducibility. TRIAL REGISTRATION SPIRIT-DEFINE and CONSORT-DEFINE are registered with the EQUATOR Network ( https://www.equator-network.org/ ).
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Affiliation(s)
| | - Munyaradzi Dimairo
- Clinical Trials Research Unit, School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Christopher J Weir
- Edinburgh Clinical Trials Unit, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Siew Wan Hee
- University Hospitals Coventry & Warwickshire NHS Trust, Coventry, UK
- University of Warwick, Coventry, UK
| | | | - Moreno Ursino
- Inserm, Centre de Recherche Des Cordeliers, Sorbonne UniversitéUniversité Paris Cité, 75006, Paris, France
- HeKA, Inria Paris, 75015, Paris, France
- Unit of Clinical Epidemiology, AP-HP, CHU Robert Debré, CIC-EC 1426, Paris, France
- RECaP/F-CRIN, Inserm, 5400, Nancy, France
| | | | - Andrew Kightley
- Patient and Public Involvement and Engagement (PPIE) Lead, Lichfield, UK
| | | | - Thomas Jaki
- MRC Biostatistics Unit, University of Cambridge, Cambridge, UK
- University of Regensburg, Regensburg, Germany
| | | | | | - Shing Lee
- Columbia University, Mailman School of Public Health, New York, USA
| | - Sally Hopewell
- Oxford Clinical Trials Research Unit, University of Oxford, Oxford, UK
| | | | - An-Wen Chan
- Department of Medicine, Women's College Research Institute, University of Toronto, Toronto, Canada
| | | | | | | | | | | | - Johann de Bono
- The Institute of Cancer Research, London, UK
- The Royal Marsden NHS Foundation Trust, London, UK
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6
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Grimaldi C, Ibraghimov A, Kiessling A, Rattel B, Ji C, Fuller CL, Brennan FR, Regenass-Lechner F, Shenton J, Price KD, Piché MS, Steeves MA, Prell R, Dudal S, Kronenberg S, Freebern W, Blanset D. Current nonclinical approaches for immune assessments of immuno-oncology biotherapeutics. Drug Discov Today 2023; 28:103440. [PMID: 36375739 DOI: 10.1016/j.drudis.2022.103440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/30/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
Harnessing the immune system to kill tumors has been revolutionary and, as a result, has had an enormous benefit for patients in extending life and resulting in effective cures in some. However, activation of the immune system can come at the cost of undesirable adverse events such as cytokine release syndrome, immune-related adverse events, on-target/off-tumor toxicity, neurotoxicity and tumor lysis syndrome, which are safety risks that can be challenging to assess non-clinically. This article provides a review of the biology and mechanisms that can result in immune-mediated adverse effects and describes industry approaches using in vitro and in vivo models to aid in the nonclinical safety risk assessments for immune-oncology modalities. Challenges and limitations of knowledge and models are also discussed.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Sherri Dudal
- Roche Pharmaceutical Research and Early Development, United States
| | - Sven Kronenberg
- Roche Pharmaceutical Research and Early Development, United States
| | | | - Diann Blanset
- Boehringer Ingelheim Pharmaceuticals, Inc., United States.
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7
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L Ramos C, Namazy J. Monoclonal Antibodies (Biologics) for Allergic Rhinitis, Asthma, and Atopic Dermatitis During Pregnancy and Lactation. Immunol Allergy Clin North Am 2023; 43:187-197. [PMID: 36411004 DOI: 10.1016/j.iac.2022.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Asthma, allergic rhinitis, chronic urticaria, and atopic dermatitis are common diseases that affect hundreds of thousands of pregnant women each year. The authors discuss the use of biologics in women who are pregnant or lactating, indications, available safety information, and knowledge gaps. There are pregnant patients for which standard treatment is either inadequate or contraindicated; in those cases, monoclonal antibodies (biologics) should be considered despite the unknown risk to the fetus. In severe asthma, omalizumab is the best studied with reassuring available safety data. Insufficient safety data exist on mepolizumab, reslizumab, benralizumab, dupilumab, and tezepelumab use during pregnancy and lactation.
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Affiliation(s)
- Courtney L Ramos
- Division of Allergy, Asthma and Immunology, Scripps Clinic Medical Group, San Diego, CA, USA; Scripps Clinic Mission Valley - 7565 Mission Valley Rd, Suite 200, San Diego, CA 92108, USA.
| | - Jennifer Namazy
- Division of Allergy, Asthma and Immunology, Scripps Clinic Medical Group, San Diego, CA, USA; Scripps Clinic Mission Valley - 7565 Mission Valley Rd, Suite 200, San Diego, CA 92108, USA
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8
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Gajęcka M, Zielonka Ł, Babuchowski A, Gajęcki MT. Exposure to Low Zearalenone Doses and Changes in the Homeostasis and Concentrations of Endogenous Hormones in Selected Steroid-Sensitive Tissues in Pre-Pubertal Gilts. Toxins (Basel) 2022; 14:toxins14110790. [PMID: 36422963 PMCID: PMC9692984 DOI: 10.3390/toxins14110790] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
This study was undertaken to analyze whether prolonged exposure to low-dose zearalenone (ZEN) mycotoxicosis affects the concentrations of ZEN, α-zearalenol (α-ZEL), and β-zearalenol (β-ZEL) in selected reproductive system tissues (ovaries, uterine horn-ovarian and uterine sections, and the middle part of the cervix), the hypothalamus, and pituitary gland, or the concentrations of selected steroid hormones in pre-pubertal gilts. For 42 days, gilts were administered per os different ZEN doses (MABEL dose [5 µg/kg BW], the highest NOAEL dose [10 µg/kg BW], and the lowest LOAEL dose [15 µg/kg BW]). Tissue samples were collected on days seven, twenty-one, and forty-two of exposure to ZEN (exposure days D1, D2, and D3, respectively). Blood for the analyses of estradiol and progesterone concentrations was collected in vivo on six dates at seven-day intervals (on analytical dates D1-D6). The analyses revealed that both ZEN and its metabolites were accumulated in the examined tissues. On successive analytical dates, the rate of mycotoxin accumulation in the studied tissues decreased gradually by 50% and proportionally to the administered ZEN dose. A hierarchical visualization revealed that values of the carry-over factor (CF) were highest on exposure day D2. In most groups and on most exposure days, the highest CF values were found in the middle part of the cervix, followed by the ovaries, both sections of the uterine horn, and the hypothalamus. These results suggest that ZEN, α-ZEL, and β-ZEL were deposited in all analyzed tissues despite exposure to very low ZEN doses. The presence of these undesirable compounds in the examined tissues can inhibit the somatic development of the reproductive system and compromise neuroendocrine coordination of reproductive competence in pre-pubertal gilts.
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Affiliation(s)
- Magdalena Gajęcka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland
- Correspondence:
| | - Łukasz Zielonka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland
| | - Andrzej Babuchowski
- Dairy Industry Innovation Institute Ltd., Kormoranów 1, 11-700 Mrągowo, Poland
| | - Maciej Tadeusz Gajęcki
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland
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9
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Mróz M, Gajęcka M, Brzuzan P, Lisieska-Żołnierczyk S, Leski D, Zielonka Ł, Gajęcki MT. Carry-Over of Zearalenone and Its Metabolites to Intestinal Tissues and the Expression of CYP1A1 and GSTπ1 in the Colon of Gilts before Puberty. Toxins (Basel) 2022; 14:354. [PMID: 35622600 PMCID: PMC9145504 DOI: 10.3390/toxins14050354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/14/2022] [Accepted: 05/17/2022] [Indexed: 02/01/2023] Open
Abstract
The objective of this study was to evaluate whether low doses of zearalenone (ZEN) affect the carry-over of ZEN and its metabolites to intestinal tissues and the expression of CYP1A1 and GSTπ1 in the large intestine. Prepubertal gilts (with a BW of up to 14.5 kg) were exposed in group ZEN to daily ZEN5 doses of 5 μg/kg BW (n = 15); in group ZEN10, 10 μg/kg BW (n = 15); in group ZEN15, 15 μg/kg BW (n = 15); or were administered a placebo (group C, n = 15) throughout the experiment. After euthanasia, tissues were sampled on exposure days 7, 21, and 42 (D1, D2, and D3, respectively). The results confirmed that the administered ZEN doses (LOAEL, NOAEL, and MABEL) were appropriate to reliably assess the carry-over of ZEN. Based on the observations made during 42 days of exposure to pure ZEN, it can be hypothesized that all mycotoxins (ZEN, α-zearalenol, and β-zearalenol) contribute to a balance between intestinal cells and the expression of selected genes encoding enzymes that participate in biotransformation processes in the large intestine; modulate feminization processes in prepubertal gilts; and elicit flexible, adaptive responses of the macroorganism to mycotoxin exposure at the analyzed doses.
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Affiliation(s)
- Magdalena Mróz
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
| | - Magdalena Gajęcka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
| | - Paweł Brzuzan
- Department of Environmental Biotechnology, Faculty of Environmental Sciences and Fisheries, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-719 Olsztyn, Poland;
| | - Sylwia Lisieska-Żołnierczyk
- Independent Public Health Care Centre of the Ministry of the Interior and Administration, and the Warmia and Mazury Oncology Centre in Olsztyn, Wojska Polskiego 37, 10-228 Olsztyn, Poland;
| | - Dawid Leski
- Research and Development Department, Wipasz S.A., Wadąg 9, 10-373 Wadąg, Poland;
| | - Łukasz Zielonka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
| | - Maciej T. Gajęcki
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
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10
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Kale VP, Bebenek I, Ghantous H, Kapeghian J, Singh BP, Thomas LJ. Practical Considerations in Determining Adversity and the No-Observed-Adverse-Effect-Level (NOAEL) in Nonclinical Safety Studies: Challenges, Perspectives and Case Studies. Int J Toxicol 2022; 41:143-162. [PMID: 35230174 DOI: 10.1177/10915818211073047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Determining the adverse nature of findings from nonclinical safety studies often poses a challenge for the key stakeholders responsible for interpreting the results of definitive toxicity studies in support of pharmaceutical product development. Although there are instances in which responses to treatment clearly indicate intolerability or tissue injury associated with dysfunction; in practice, more often there is uncertainty in characterizing an effect of drug treatment as adverse or not. This is due to the inherent variability in responses of biological test systems to toxicological insults, leaving the ultimate analyses of adversity to individual interpretation and subjectivity. This article is a follow-up to the workshop entitled, "Adverse or Not Adverse?: Thinking process behind adversity determination during nonclinical drug development," conducted at the 58th Annual Meeting of the Society of Toxicology, March 2019 in Baltimore, MD. In this paper, we further discuss and incorporate the perspectives of authors representing different roles, such as Study Director, Study Pathologist, Pharmacology/Toxicology Reviewer (U.S. Food and Drug Administration), and Sponsor in the determination and use of adversity. We also present a practical stepwise approach as an aid in this assessment, and further apply these principles to discuss 10 case studies with different therapeutic modalities and unique challenges.
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Affiliation(s)
| | - Ilona Bebenek
- Food and Drug Administration, Silver Spring, MD, USA
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11
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Singh R, Moreno M, Stanimirovic D. Comparison of Various Approaches to Translate Non-Linear Pharmacokinetics of Monoclonal Antibodies from Cynomolgus Monkey to Human. Eur J Drug Metab Pharmacokinet 2021; 46:555-567. [PMID: 34120326 DOI: 10.1007/s13318-021-00691-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND AND OBJECTIVES The prediction of pharmacokinetics of monoclonal antibodies (mAbs) exhibiting non-linear pharmacokinetics in preclinical species to human is challenging, and very limited scientific work has been published in this field of research. Therefore, we have conducted an elaborate comparative assessment to determine the most reliable preclinical to clinical scaling strategy for mAbs with non-linear pharmacokinetics. METHODS We have compared three different scaling approaches to predict human pharmacokinetics from cynomolgus monkey. In the first approach, cynomolgus monkey pharmacokinetic parameters estimated using a two-compartment model with parallel linear and non-linear elimination were allometrically scaled to simulate human pharmacokinetics. In the second approach, allometric exponents were integrated with a minimal physiologically based pharmacokinetic (mPBPK) model to translate human pharmacokinetics. In the third approach, we have employed a species time-invariant method, wherein a two-compartment model with parallel linear and non-linear elimination was used as a framework model for simulation of the human profile. RESULTS Human exposure parameters projected by an integrated allometric method were only within two fold for approximately 45-70% of predictions at different doses of five mAbs evaluated, while approximately 70-80% of Cmax and AUC predictions by integrated mPBPK modelling as well as the species time-invariant method were within two-fold error. The average fold error for clearance predictions by the integrated mPBPK method was 1.10-1.45 fold, whilst for the species time-variant and integrated allometric methods, the average fold error was between 1.04 and 1.37 fold and 1.24 and 2.13 fold, respectively. CONCLUSIONS Our findings suggest that the species time-variant method and mPBPK proposed by us can be employed to reliably translate non-linear pharmacokinetics of mAbs from cynomolgus monkey to human.
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Affiliation(s)
- Renu Singh
- Translation Bioscience, Human Health Therapeutics, National Research Council of Canada, Ottawa, ON, Canada. .,Global DMPK, Research IVIVT, 1250 S. Collegeville Road, Collegeville, PA, 19426, USA. .,Translation Bioscience, Human Health Therapeutics, National Research Council of Canada, Montreal, QC, Canada.
| | - Maria Moreno
- Translation Bioscience, Human Health Therapeutics, National Research Council of Canada, Ottawa, ON, Canada
| | - Danica Stanimirovic
- Translation Bioscience, Human Health Therapeutics, National Research Council of Canada, Ottawa, ON, Canada
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12
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Gajęcka M, Mróz M, Brzuzan P, Onyszek E, Zielonka Ł, Lipczyńska-Ilczuk K, Przybyłowicz KE, Babuchowski A, Gajęcki MT. Correlations between Low Doses of Zearalenone, Its Carryover Factor and Estrogen Receptor Expression in Different Segments of the Intestines in Pre-Pubertal Gilts-A Study Protocol. Toxins (Basel) 2021; 13:toxins13060379. [PMID: 34073248 PMCID: PMC8227742 DOI: 10.3390/toxins13060379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/14/2021] [Accepted: 05/25/2021] [Indexed: 11/24/2022] Open
Abstract
Plant materials can be contaminated with Fusarium mycotoxins and their derivatives, whose toxic effects on humans and animals may remain subclinical. Zearalenone (ZEN), a low-molecular-weight compound, is produced by molds in crop plants as a secondary metabolite. The objective of this study will be to analyze the in vivo correlations between very low monotonic doses of ZEN (5, 10, and 15 μg ZEN/kg body weight—BW for 42 days) and the carryover of this mycotoxin and its selected metabolites from the intestinal contents to the intestinal walls, the mRNA expression of estrogen receptor alfa (ERα) and estrogen receptor beta (ERβ) genes, and the mRNA expression of genes modulating selected colon enzymes (CYP1A1 and GSTP1) in the intestinal mucosa of pre-pubertal gilts. An in vivo experiment will be performed on 60 clinically healthy animals with initial BW of 14.5 ± 2 kg. The gilts will be randomly divided into a control group (group C, n = 15) and three experimental groups (group ZEN5, group ZEN10, and group ZEN15; n = 15). Group ZEN5 will be administered per os 5 μg ZEN/kg BW (MABEL), group ZEN10—10 μg ZEN/kg BW (NOAEL), and group ZEN15—15 µg ZEN/kg BW (low LOAEL). In each group, five animals will be euthanized on analytical dates 1 (exposure day 7), 2 (exposure day 21), and 3 (exposure day 42). Samples for in vitro analyses will be collected from an intestinal segment resected from the following regions: the third (horizontal) part of the duodenum, jejunum, ileum, cecum, ascending colon, transverse colon, and descending colon. The experimental material will be collected under special conditions, and it will be transported to specialist laboratories where samples will be obtained for further analyses.
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Affiliation(s)
- Magdalena Gajęcka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
- Correspondence:
| | - Magdalena Mróz
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
| | - Paweł Brzuzan
- Department of Environmental Biotechnology, Faculty of Environmental Sciences and Fisheries, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-719 Olsztyn, Poland;
| | - Ewa Onyszek
- Dairy Industry Innovation Institute Ltd., Kormoranów 1, 11-700 Mrągowo, Poland; (E.O.); (A.B.)
| | - Łukasz Zielonka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
| | - Karolina Lipczyńska-Ilczuk
- Department of Epizootiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/01, 10-718 Olsztyn, Poland;
| | - Katarzyna E. Przybyłowicz
- Department of Human Nutrition, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, Słoneczna 45F, 10-719 Olsztyn, Poland;
| | - Andrzej Babuchowski
- Dairy Industry Innovation Institute Ltd., Kormoranów 1, 11-700 Mrągowo, Poland; (E.O.); (A.B.)
| | - Maciej T. Gajęcki
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland; (M.M.); (Ł.Z.); (M.T.G.)
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13
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Baldrick P, Reichl A. Nonclinical & clinical interface - extrapolation of nonclinical data to support Phase I clinical studies. Regul Toxicol Pharmacol 2021; 121:104869. [DOI: 10.1016/j.yrtph.2021.104869] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/09/2020] [Accepted: 01/05/2021] [Indexed: 02/07/2023]
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14
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Schaller TH, Snyder DJ, Spasojevic I, Gedeon PC, Sanchez-Perez L, Sampson JH. First in human dose calculation of a single-chain bispecific antibody targeting glioma using the MABEL approach. J Immunother Cancer 2021; 8:jitc-2019-000213. [PMID: 32273346 PMCID: PMC7254109 DOI: 10.1136/jitc-2019-000213] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2020] [Indexed: 12/13/2022] Open
Abstract
Background First-in-human (FIH) clinical trials require careful selection of a safe yet biologically relevant starting dose. Typically, such starting doses are selected based on toxicity studies in a pharmacologically relevant animal model. However, with the advent of target-specific and highly active immunotherapeutics, both the Food and Drug Administration and the European Medicines Agency have provided guidance that recommend determining a safe starting dose based on a minimum anticipated biological effect level (MABEL) approach. Methods We recently developed a T cell activating bispecific antibody that effectively treats orthotopic patient-derived malignant glioma and syngeneic glioblastoma in mice (hEGFRvIII:CD3 bi-scFv). hEGFRvIII:CD3 bi-scFv is comprized of two single chain antibody fragments (bi-scFvs) that bind mutant epidermal growth factor receptor variant III (EGFRvIII), a mutation frequently seen in malignant glioma, and human CD3ε on T cells, respectively. In order to establish a FIH dose, we used a MABEL approach to select a safe starting dose for hEGFRvIII:CD3 bi-scFv, based on a combination of in vitro data, in vivo animal studies, and theoretical human receptor occupancy modeling. Results Using the most conservative approach to the MABEL assessment, a dose of 57.4 ng hEGFRvIII:CD3 bi-scFv/kg body weight was selected as a safe starting dose for a FIH clinical study. Conclusions The comparison of our MABEL-based starting dose to our in vivo efficacious dose and the theoretical human receptor occupancy strongly supports that our human starting dose of 57.4 ng hEGFRvIII:CD3 bi-scFv/patient kg will be safe.
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Affiliation(s)
- Teilo H Schaller
- Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina, United States.,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, United States.,Department of Pathology, Duke University Medical Center, Durham, North Carolina, United States
| | - David J Snyder
- Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina, United States.,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, United States
| | - Ivan Spasojevic
- PK/PD Core Laboratory, Duke Cancer Institute, Durham, North Carolina, United States.,Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States
| | - Patrick C Gedeon
- Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina, United States.,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, United States
| | - Luis Sanchez-Perez
- Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina, United States.,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, United States
| | - John H Sampson
- Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina, United States .,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, United States.,Department of Pathology, Duke University Medical Center, Durham, North Carolina, United States
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15
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Leach MW, Clarke DO, Dudal S, Han C, Li C, Yang Z, Brennan FR, Bailey WJ, Chen Y, Deslandes A, Loberg LI, Mayawala K, Rogge MC, Todd M, Chemuturi NV. Strategies and Recommendations for Using a Data-Driven and Risk-Based Approach in the Selection of First-in-Human Starting Dose: An International Consortium for Innovation and Quality in Pharmaceutical Development (IQ) Assessment. Clin Pharmacol Ther 2020; 109:1395-1415. [PMID: 32757299 DOI: 10.1002/cpt.2009] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 07/02/2020] [Indexed: 01/27/2023]
Abstract
Various approaches to first-in-human (FIH) starting dose selection for new molecular entities (NMEs) are designed to minimize risk to trial subjects. One approach uses the minimum anticipated biological effect level (MABEL), which is a conservative method intended to maximize subject safety and designed primarily for NMEs having high perceived safety risks. However, there is concern that the MABEL approach is being inappropriately used for lower risk molecules with negative impacts on drug development and time to patient access. In addition, ambiguity exists in how MABEL is defined and the methods used to determine it. The International Consortium for Innovation and Quality in Pharmaceutical Development convened a working group to understand current use of MABEL and its impact on FIH starting dose selection, and to make recommendations for FIH dose selection going forward. An industry-wide survey suggested the achieved or estimated maximum tolerated dose, efficacious dose, or recommended phase II dose was > 100-fold higher than the MABEL-based starting dose for approximately one third of NMEs, including trials in patients. A decision tree and key risk factor table were developed to provide a consistent, data driven-based, and risk-based approach for selecting FIH starting doses.
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Affiliation(s)
- Michael W Leach
- Drug Safety Research and Development, Pfizer, Inc., Cambridge, Massachusetts, USA
| | - David O Clarke
- Nonclinical Safety Assessment, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana, USA
| | - Sherri Dudal
- DMPK Project Leads and Translational M&S, Pharmaceutical Sciences, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Chao Han
- Biologics Development Sciences, Janssen Research and Development, LLC, Spring House, Pennsylvania, USA
| | - Chunze Li
- Department of Clinical Pharmacology, Genentech, Inc., South San Francisco, California, USA
| | - Zheng Yang
- Metabolism and Pharmacokinetics, Bristol-Myers Squibb Co., Princeton, New Jersey, USA
| | | | - Wendy J Bailey
- Safety Assessment and Laboratory Animal Resources, Merck & Co., Inc., West Point, Pennsylvania, USA
| | - Yingxue Chen
- Clinical Pharmacology and Quantitative Pharmacology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Boston, Massachusetts, USA
| | - Antoine Deslandes
- Translational Medicine & Early Development, Sanofi R&D, Centre de Recherche Vitry-sur-Seine 13, Vitry-sur-Seine Cedex, France
| | - Lise I Loberg
- Preclinical Safety, AbbVie, North Chicago, Illinois, USA
| | - Kapil Mayawala
- Quantitative Pharmacology and Pharmacometrics, PPDM, Merck & Co., Inc., Kenilworth, New Jersey, USA
| | - Mark C Rogge
- Quantitative and Translational Science, Takeda Pharmaceuticals, Cambridge, Massachusetts, USA
| | - Marque Todd
- Drug Safety Research and Development, Pfizer, Inc., San Diego, California, USA
| | - Nagendra V Chemuturi
- Pharmacokinetic Sciences, Novartis Institute of BioMedical Research, Inc., Cambridge, Massachusetts, USA
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16
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Prediction of Human Pharmacokinetics and Clinical Effective Dose of SI-B001, an EGFR/HER3 Bi-specific Monoclonal Antibody. J Pharm Sci 2020; 109:3172-3180. [PMID: 32565357 DOI: 10.1016/j.xphs.2020.06.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/29/2020] [Accepted: 06/12/2020] [Indexed: 12/11/2022]
Abstract
SI-B001 is a new EGFR/HER3 bi-specific antibody showing encouraging anti-tumor efficacy in the preclinical studies and was ready for further clinical research. To help with the dose design, human pharmacokinetics (PK) and clinical effective doses of SI-B001 were predicted by PK and PK/PD modeling and simulation. A Michaels-Menten (M-M) PK model was first used to describe the PK of SI-B001 in cynomolgus monkeys, whose parameters were allometrically scaled to humans for the simulation of human PK profiles. Besides, the anti-tumor efficacy of SI-B001 on different xenografts in tumor-bearing mice was quantitatively described by PK/PD models. The clinical effective doses were predicted by comparing the effective exposure (AUCs) in mice with simulated human AUCs. The clinical effective doses of SI-B001 were predicted to be over 16 mg/kg, 5-7 mg/kg or 5-6 mg/kg per week for colon cancer, head and neck cancer or esophageal cancer, respectively, which may help with the optimization of dose escalation schemes and the selection of indications for SI-B001.
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Kruger SF, Cadilha BL, von Bergwelt-Baildon M, Endres S, Kobold S. Challenges in Clinical Trial Design for T Cell-Based Cancer Immunotherapy. Clin Pharmacol Ther 2019; 107:47-49. [PMID: 31705756 DOI: 10.1002/cpt.1659] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 09/06/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Stephan F Kruger
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany.,Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, University Hospital, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bruno L Cadilha
- Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, University Hospital, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-Universität München, Munich, Germany
| | - Michael von Bergwelt-Baildon
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany.,German Center for Translational Cancer Research (DKTK), partner site Munich, Munich, Germany.,Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,Gene Center LMU Munich, Munich, Germany
| | - Stefan Endres
- Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, University Hospital, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-Universität München, Munich, Germany.,German Center for Translational Cancer Research (DKTK), partner site Munich, Munich, Germany
| | - Sebastian Kobold
- Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, University Hospital, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-Universität München, Munich, Germany.,German Center for Translational Cancer Research (DKTK), partner site Munich, Munich, Germany
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18
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A Bioluminescence Resonance Energy Transfer-Based Approach for Determining Antibody-Receptor Occupancy In Vivo. iScience 2019; 15:439-451. [PMID: 31121469 PMCID: PMC6529791 DOI: 10.1016/j.isci.2019.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/18/2019] [Accepted: 05/03/2019] [Indexed: 12/31/2022] Open
Abstract
Elucidating receptor occupancy (RO) of monoclonal antibodies (mAbs) is a crucial step in characterizing the therapeutic efficacy of mAbs. However, the in vivo assessment of RO, particularly within peripheral tissues, is greatly limited by current technologies. In the present study, we developed a bioluminescence resonance energy transfer (BRET)-based system that leverages the large signal:noise ratio and stringent energy donor-acceptor distance dependency to measure antibody RO in a highly selective and temporal fashion. This versatile and minimally invasive system enables longitudinal monitoring of the in vivo antibody-receptor engagement over several days. As a proof of principle, we quantified cetuximab-epidermal growth factor receptor binding kinetics using this system and assessed cetuximab RO in a tumor xenograft model. Incomplete ROs were observed, even at a supratherapeutic dose of 50 mg/kg, indicating that fractional target accessibility is achieved. The BRET-based imaging approach enables quantification of antibody in vivo RO and provides critical information required to optimize therapeutic mAb efficacy. Nano-BRET was used to longitudinally quantify cetuximab-binding kinetics to EGFR Incomplete EGFR occupancy in solid tumors was observed even at supratherapeutic doses A kinetic disassociation exists between plasma antibody and bound targets in tumors
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Ovacik M, Lin K. Tutorial on Monoclonal Antibody Pharmacokinetics and Its Considerations in Early Development. Clin Transl Sci 2018; 11:540-552. [PMID: 29877608 PMCID: PMC6226118 DOI: 10.1111/cts.12567] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 05/11/2018] [Indexed: 12/21/2022] Open
Abstract
The tutorial introduces the readers to the fundamentals of antibody pharmacokinetics (PK) in the context of drug development. Topics covered include an overview of antibody development, PK characteristics, and the application of antibody PK/pharmacodynamics (PD) in research and development decision-making. We also discuss the general considerations for planning a nonclinical PK program and describe the types of PK studies that should be performed during early development of monoclonal antibodies.
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Affiliation(s)
- Meric Ovacik
- Department of Preclinical and Translational Pharmacokinetics, Genentech, Inc., South San Francisco, California, USA
| | - Kedan Lin
- Clinical Pharmacology, NGM Biopharmaceuticals, Inc., South San Francisco, California, USA
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20
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Evaluation of the potential use of hybrid LC–MS/MS for active drug quantification applying the ‘free analyte QC concept’. Bioanalysis 2017; 9:1705-1717. [DOI: 10.4155/bio-2017-0158] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: Assessment of active drug exposure of biologics may be crucial for drug development. Typically, ligand-binding assay methods are used to provide free/active drug concentrations. To what extent hybrid LC–MS/MS procedures enable correct ‘active’ drug quantification is currently under consideration. Experimental & results: The relevance of appropriate extraction condition was evaluated by a hybrid target capture immuno-affinity LC–MS/MS method using total and free/active quality controls (QCs). The rapid extraction (10 min) provided correct results, whereas overnight incubation resulted in significant overestimation of the free/active drug (monclonal antibody) concentration. Conventional total QCs were inappropriate to determine optimal method conditions in contrast to free/active QCs. Conclusion: The ‘free/active analyte QC concept’ enables development of appropriate extraction conditions for correct active drug quantification by hybrid LC–MS/MS.
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Baldrick P. Getting a molecule into the clinic: Nonclinical testing and starting dose considerations. Regul Toxicol Pharmacol 2017; 89:95-100. [DOI: 10.1016/j.yrtph.2017.07.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/21/2017] [Accepted: 07/23/2017] [Indexed: 10/19/2022]
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