scholarly journals Preclinical Characterization of a Novel Anti-Cancer PD-L1 Inhibitor RPH-120

2021 ◽  
Vol 12 ◽  
Author(s):  
Andrey Kulikov ◽  
Elena Shipaeva ◽  
Anastasia Dmitrieva ◽  
Vera Batrak ◽  
Georgy Shipunov ◽  
...  
Keyword(s):  
Dose Range ◽  
Recovery Period ◽  
Cross Reactivity ◽  
Drug Candidate ◽  
Tumor Growth Inhibition ◽  
Binding Studies ◽  
Cynomolgus Monkeys ◽  
Range Finding

RPH-120 is a novel fully human anti-PD-L1 IgG1 monoclonal antibody with specifically designed Asn300Ala mutation in Fc fragment. Surface plasmon resonance assay showed that affinity of the RPH-120 to the dimeric form of human PD-L1-Fc fusion protein was much higher than affinity to the monomeric His-tagged PD-L1. Further binding studies demonstrated that RPH-120 is able to bind to human and monkey but not mouse PD-L1. Tissue cross-reactivity study showed good comparability of human and Cynomolgus monkeys tissue staining. Bioactivity was assessed using mixed lymphocyte reaction assay. This study revealed that RPH-120 was able to activate T cells preventing PD1/PD-L1 interaction. Antitumor efficacy was analyzed in HCC-827 lung cancer xenografts in humanized CD34+ mice at three dosage levels: 20, 80, and 200 mg/kg. RPH-120 demonstrated significant tumor growth inhibition, and this inhibition was comparable to that of atezolizumab. In a single dose toxicity, toxicokinetic and dose range finding study performed in Cynomolgus monkeys, RPH-120 was administered via intravenous (IV) bolus or 60-min IV infusion, followed by 8-weeks recovery period. An acceptable toxicokinetic profile was demonstrated and administration at doses of up to 200 mg/kg was well tolerated by all animals. In conclusion, RPH-120 revealed promising in vitro and in vivo activity and safety. RPH-120 is a potent anti-PD-L1 drug candidate for cancer immunotherapy.

scholarly journals Pharmacologic studies of CDH17/CD3 bispecific antibodies to treat colorectal and pancreatic cancers.

2019 ◽  
Vol 5 (suppl) ◽  
pp. 116-116
Author(s):  
Kwong-Fai Wong ◽  
William Chi-shing Tai ◽  
Kronos Chow ◽  
John M. Luk ◽  
Don Staunton
Keyword(s):  
T Cell ◽  
Cancer Cells ◽  
Dose Range ◽  
Specific Antigen ◽  
Bispecific Antibodies ◽  
Tumor Growth Inhibition ◽  
Cynomolgus Monkeys ◽  
Pancreatic Cancer Cells

116 Background: Immunotherapy has emerged as a new hope for cancer patients who do not respond to conventional therapies. In addition to the widely investigated immune checkpoint inhibitors such as PD-L1 antibody, bispecific T cell redirecting antibodies have also drawn much attention from pharmaceutical companies. The popularity of bispecific T cell engager has been increasing since the US FDA’s accelerated approval of blinatumomab for treatment of haematological malignancies. The clinical efficacy of such engagers in solid tumors have however remained to be demonstrated. Cadherin-17 (CDH17) is a promising immunotherapeutic target for gastrointestinal (GI) cancers. It is a highly tumor-specific antigen with restricted expression limited to the tight junction of intestine that is normally inaccessible to biologics. CDH17 overexpression correlates with tumor burden and poor prognosis. Methods: Fully humanized CDH17/CD3 bispecific antibodies were generated. T cell-mediated cytotoxicity was tested in vitro and in vivo. Safety was addressed in cynomolgus monkeys with intestinal CDH17 level equivalent to that of human. Results: One lead antibody, ARB202 exhibited high-affinity binding to CDH17 and CD3. In the presence of CDH17-positive pancreatic cancer cells, ARB202 stimulated in vitro IL-2 release in CD3/CD28-expanded PBMC. In the absence of tumor cells ARB202 stimulated cytokine production in PBMCs required over 600-fold greater concentrations. ARB202 specifically directed in vitro T cell killing of GI cancer cells expressing CDH17, but not of cells lacking CDH17 expression. In mouse xenograft models reconstituted with human immune cells, ARB202 demonstrated significant tumor growth inhibition with concomitant IL-2 response. No dose-dependent toxicities on cynomolgus monkeys were observed over a 3-log dose range. ARB202 displayed favourable in vivo pharmacokinetic profiles in mice and monkeys. ARB202 is a stable bispecific antibody retaining functional activity after incubation for a month at 37°C at pH6.0. Conclusions: ARB202 is a promising candidate for clinical trials. A proprietary cell line is generated for the pilot manufacturing of ARB202 for IND enabling studies.

Bispecific anti-PD-1/PD-L1 antibody CTX-8371 to promote cellular clustering and PD-1 shedding, antitumor activity and tolerability.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e15056-e15056
Author(s):  
Diana I. Albu ◽  
Yan Qin ◽  
Xianzhe Wang ◽  
Vivian Li ◽  
Taeg Kim ◽  
...  
Keyword(s):  
T Cell ◽  
Transgenic Mice ◽  
T Cell Activation ◽  
Cell Activation ◽  
Mouse Tumor ◽  
Tumor Models ◽  
Cynomolgus Monkeys ◽  
Range Finding

e15056 Background: Checkpoint blockade therapies targeting PD-1 and PD-L1 have shown great success for the treatment of various malignancies. However, a substantial fraction of patients with PD-L1-positive tumors remain unresponsive to these therapies. Novel therapy with significantly greater activity than the leading PD-1/PD-L1 inhibitors is expected to bring additional clinical benefit to patients. Here we describe the preclinical evaluation of CTX-8371, which combines anti-PD-1 and anti-PD-L1 monoclonal antibodies in one bispecific tetravalent molecule. Methods: The immune-enhancing activity of CTX-8371 was tested in vitro in T cell activation assays and tumor cell killing assay. CTX-8371 anti-tumor efficacy in vivo was assessed using mouse tumor cells expressing human PD-L1 implanted in transgenic mice humanized at the PD-1 and PD-L1 loci. CTX-8371 anti-tumor activity was also tested in xenograft tumor models. The mechanism of action of CTX-8371 was investigated in vitro using Jurkat cells expressing PD-1 or PD-L1, human PBMCs, and in vivo in tumor-bearing, chimeric PD-1/PD-L1 transgenic mice. CTX-8371 PK was determined in mice using an MSD ELISA-based assay and in cynomolgus monkeys using a qualified ELISA method. Dose range finding and toxicokinetic studies were performed in cynomolgus monkeys. Results: CTX-8371 potently enhanced T cell activation and function in vitro and showed curative efficacy as monotherapy in multiple solid tumor models, isografts or xenografts. Furthermore, CTX-8371 demonstrated superior anti-tumor efficacy compared to Keytruda or atezolizumab in checkpoint inhibitors-sensitive and resistant syngeneic mouse tumor models. Mechanistically, in addition to blocking PD-1 interaction with PD-L1, CTX-8371 bispecific antibody facilitated cell to cell bridging between cells expressing PD-1 and cells expressing PD-L1. Furthermore, we show that simultaneous binding of CTX-8371 to both PD-1 and PD-L1 resulted in long term PD-1 shedding. This suggests that CTX-8371 may prevent or overcome T cell exhaustion within the tumor microenvironment, thus providing additional advantage over existing therapies. Lastly, excellent tolerability was observed in non-human primates given 2 weekly drug infusions at up to 50 mg/kg dose. Conclusions: CTX-8371 displays multiple mechanisms of action over monoclonal PD1/PD-L1 blockade. These unique pharmacological properties of CTX-8371 could explain the enhanced T cell responses to tumor antigens and superior efficacy over current monoclonal antibody therapies. With favorable PK/PD and toxicology profiles in mice and cynomolgus monkeys, CTX-8371 warrants further advancement to clinical testing.

scholarly journals fMRI analysis of MCP-1 induced prefrontal cortex neuronal dysfunction in depressive cynomolgus monkeys

2020 ◽  
Author(s):  
Weixin Yan ◽  
Di Zhao ◽  
Kai Liu ◽  
Yanjia Deng ◽  
Lingpeng Xie ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Brain Area ◽  
Recovery Period ◽  
Inflammatory Factors ◽  
Inflammatory Factor ◽  
Monocyte Chemoattractant Protein 1 ◽  
Cynomolgus Monkeys ◽  
Functional Changes

Abstract Background Depression is a serious mental illness, which is one of the main causes of disability at present. The cause and location of depression are still unclear. The purpose of this study is to establish a stable and reliable model of non-human primate depression, and further confirm the significance of neuritis in the pathogenesis of depression by combining in vivo and in vitro experiments. Methods We simulated the environment of human depression and established a cynomolgus monkeys depression model by pro-depressive prodedure (PDP). The model was evaluated by behavioral test and neurotransmitter detection, and the important functional changes of brain area were detected by Functional magnetic resonance imaging (fMRI). Abnormal inflammatory factors in serum and cerebrospinal fluid (CSF) were determined by multi factor kit. In addition, the mechanism was further verified by stereotactic injection of inflammatory factor antagonists into mouse prefrontal cortex(PFC) and cell experiments. Results Here we found that a 12-week exposure to PDP can effectively induce the depressive behaviors of cynomolgus monkeys. PDP increases the time of depressive-like and anxious-like behaviors and decreases locomotor and exploratory behaviors, which were maintained after a 4-week recovery period. PDP lowers the serum serotonin (5-HT), brain-derived neurotrophic factor (BDNF) level at the end of the procedure. FMRI can reflect the state of brain function noninvasively based on the level of blood oxygen. The results demonstrate that fALFF signaling is downregulated in PFC. The downregulation of BDNF and NeuN(Neuronal nuclei antigen) in PFC are observed in depressive monkeys. At the same time, it was found that contents of the monocyte chemoattractant protein-1 (MCP-1) in serum, CSF and PFC are increased in cynomolgus monkeys receiving PDP treatment. Furthermore, we found that MCP-1 receptor antagonist (CCR2-RA-[R]) can significantly reduce the susceptibility of depression in mice and increase the expression of BDNF in serum and PFC of depressed mice and blocked the downregulation of MCP-1 on the expression of BDNF in SHSY-5Y cells. Conclusions In conclusion, PDP induces cynomolgus monkeys depression by secreting MCP-1 to impair the neurotrophic function of 5-HT in PFC. PDP is a satisfying method to establish inducible depressive model in cynomolgus monkeys.

scholarly journals In vitro acute inhalation toxicity for TiO2 (GST) using 3D human tissue model (EpiAirwayTM)

2021 ◽  
Vol 36 (3) ◽  
pp. e2021015
Author(s):  
Seong Yong Jang ◽  
Myeong Kyu Park ◽  
Jae Min Im ◽  
Hae Sung Park ◽  
Heung Sik Seo ◽  
...  
Keyword(s):  
Mtt Assay ◽  
Dose Range ◽  
Screening Method ◽  
Inhalation Toxicity ◽  
Hazardous Substance ◽  
Tissue Model ◽  
Range Finding ◽  
Sludge Recycling

The present study was performed to screen in vitro potential acute inhalation toxicity using an EpiAirwayTM tissue model (human tracheal/bronchial tissue) for the nano-sized titanium dioxide, GST manufactured as a photocatalyst through of sludge recycling and to compare with P-25 a commercialized photocatalytic material. According to the protocol provided by in vitro tissue manufacturer, the GST was exposure to the tissue for 3 hours in 450, 500, 650, 850 mg/mL concentration after preliminary dose range finding study and then tissue viability (%, IC75) was calculated using the MTT assay. Besides, the histopathological observation was performed to compare to the MTT assay. As a result of study, IC75 could not be confirmed at 850 mg/mL in both GST and P-25 and the grade was confirmed to be IC75> 600 mg/mL in vitro model tissue category. Therefore, it was considered that the GHS category could be classified as ‘No classification’ in screening method for potential acute inhalation toxicity. Also, not the morphological effects of epithelial cells in tissue model were observed compared with the vehicle control and histological findings were similar to the results of MTT Viability assay. Based on these results, the potential acute inhalation toxicity for GST produced through sludge recycling using in vitro tissue model inhalation toxicity showed that it could be non-hazardous substance. However, further study (in vivo study, etc.) is thought to be needed to ascertain whether GST is a toxic effect or safe.

In Vivo Cleavage of Recombinant VWF Upon Intravenous Administration in Preclinical and Clinical Settings

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 1222-1222
Author(s):  
Katalin Varadi ◽  
Hanspeter Rottensteiner ◽  
Jutta Schreiner ◽  
Herbert Gritsch ◽  
Hartmut J. Ehrlich ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ex Vivo ◽  
Dose Range ◽  
Molecular Size ◽  
Immunoblot Analysis ◽  
Animal Origin ◽  
Drug Candidate ◽  
Thrombogenic Potential

Abstract Abstract 1222 Von Willebrand factor (VWF) is composed of a series of multimers with a molecular size ranging from 600 to 20,000 kDa. The ultra-high molecular weight (UHMW) portion of VWF multimers is more efficient in platelet interactions than the lower molecular weight portion, and as such it might have a thrombogenic potential under certain pathologic conditions. The concentration of UHMW multimers in healthy individuals' blood is low because the circulating specific metalloprotease ADAMTS13 rapidly cleaves UHMW VWF upon its release into the circulation. A recombinant VWF (rVWF) expressed in CHO cells has been developed as a new drug candidate for treating patients with VWF deficiency. Since this protein is not cleaved by ADAMTS13 during the expression phase, it has a high portion of UHMW multimers, similar to the human VWF stored in Weibel-Palade bodies of endothelial cells. During the development phase of rVWF in vitro experiments showed that when treated under mild denaturing conditions or under shear, the molecule was susceptible to ADAMTS13 of human or animal origin. Here we present data from preclinical studies where analyzing the ex vivo samples showed the ADAMTS13-mediated cleavage of intravenously applied UHMW-containing rVWF. In good correlation with the in vitro results, studies in rabbits and cynomolgus monkeys showed that the ADAMTS13-specific cleavage fragments appeared as soon as 15 minutes after application, as visualized by immunoblot analysis. The appearance of cleavage bands coincided with the decrease in multimer numbers, indicating that rVWF had been specifically cleaved by endogenous ADAMTS13 in the circulation. The effect was species-dependent, only a low or minimal cleavage was observed in different mice strains. A recently completed Phase I clinical study clearly demonstrated that rVWF administered intravenously to severe VWD patients in a dose-range of 7.5 to 50 VWF:RCo U/kg body weight was rapidly processed in the circulation, resulting in the disappearance of the UHMW multimers with visible cleavage fragments, as shown by immunoblot and high resolution multimer analysis. No thrombotic adverse events were seen during the study, underlying the suitability of the UHMW-containing rVWF for treating VWD patients. Disclosures: Varadi: Baxter Innovations GmbH: Employment. Rottensteiner:Baxter Innovations GmbH: Employment. Schreiner:Baxter Innovations GmbH: Employment. Gritsch:Baxter Innovations GmbH: Employment. Ehrlich:Baxter Innovations GmbH: Employment. Scheiflinger:Baxter Innovations GmbH: Employment. Turecek:Baxter Innovations GmbH: Employment.

Preclinical evaluation of CLX-155, a novel prodrug of 5-FU for the treatment of cancer.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e15614-e15614
Author(s):  
Sunil Kumar KB ◽  
Mahesh Kandula ◽  
Sivanesan P
Keyword(s):  
Antitumor Activity ◽  
Dose Range ◽  
Liver Microsomes ◽  
Xenograft Model ◽  
Amide Bond ◽  
Tumor Growth Inhibition ◽  
Range Finding ◽  
Hct 116 ◽  
Adme Profile

e15614 Background: CLX-155 is a novel prodrug of 5-FU, developed by adding two acetyl groups (ester bond) and a caprylic acid moiety (amide bond) to 5'-DFCR ring structure. CLX-155 is designed to have a differentiated ADME profile, with improved safety and efficacy over capecitabine. Here, we present the preclinical data of CLX-155 in comparison with capecitabine. Methods: Solubility/stability of CLX-155 was studied in buffers, simulated gastrointestinal fluids and liver microsomes. In vitro metabolite profiling in hepatocytes was done following standard protocol. An oral (gavage) dose range finding (DRF) toxicity, comparative oral pharmacokinetic study and antitumor activity in HCT-116 human colon cancer cell xenograft model was conducted in mice. DRF study in mice evaluated the toxicity of CLX-155 when administered at once daily doses of 100 to 1000 mg/kg/day for 7-days. The oral pharmacokinetics CLX-155/metabolites (5'-DFCR, 5'-DFUR and 5-FU) was determined in mice at MTD dose of 500 mg/kg and for capecitabine at 1000 mg/kg. Antitumor activity of CLX-155 was evaluated in Foxn1 athymic mice at 125, 250 and 500 mg/kg/day and for capecitabine at 1000 mg/kg/day. Treatment was performed for three consecutive weeks (5 days on; 2 days off per week). Results: The results of in-vitro studies confirmed an acceptable profile for further development of CLX-155. Maximum tolerated dose of CLX-155 in mice was 500 mg/kg/day. The key toxicity findings were consistent with the mechanism of action and comparable with capecitabine. Oral PK study in mice showed a lower plasma Cmax for 5'-DFCR, 5'-DFUR and 5-FU. Plasma AUCs of the metabolites were close to or higher than that of capecitabine, indicating an extended absorption or altered metabolism in comparison with capecitabine. CLX-155 caused significant, tumor growth inhibition at all the dose levels tested. Complete tumor regression was seen in 2/10 animals at 500 mg/kg/day of CLX-155. CLX-155 was better tolerated in the mouse xenograft study, no mortality in CLX-155 versus 2/10 in capecitabine group. Conclusions: CLX-155 has an excellent safety and a differentiated ADME profile in relation to capecitabine. This translated into an improved in-vivo antitumor activity for CLX-155 in the HCT 116 xenograft model in relation to capecitabine. Overall data indicate that CLX-155 could offer significant improvements over the currently approved capecitabine in terms of dose size, frequency of administration, safety and interpatient variability in pharmacokinetics.

scholarly journals Pharmacokinetic Characterization of Supinoxin and Its Physiologically Based Pharmacokinetic Modeling in Rats

Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 373
Author(s):  
Yoo-Kyung Song ◽  
Yun-Hwan Seol ◽  
Min Ju Kim ◽  
Jong-Woo Jeong ◽  
Hae-In Choi ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Oral Administration ◽  
Dose Range ◽  
Pbpk Modeling ◽  
Drug Candidate ◽  
Physiologically Based Pharmacokinetic ◽  
Physiologically Based ◽  
Intravenous And Oral Administration

Supinoxin is a novel anticancer drug candidate targeting the Y593 phospho-p68 RNA helicase, by exhibiting antiproliferative activity and/or suppression of tumor growth. This study aimed to characterize the in vitro and in vivo pharmacokinetics of supinoxin and attempt physiologically based pharmacokinetic (PBPK) modeling in rats. Supinoxin has good permeability, comparable to that of metoprolol (high permeability compound) in Caco-2 cells, with negligible net absorptive or secretory transport observed. After an intravenous injection at a dose range of 0.5–5 mg/kg, the terminal half-life (i.e., 2.54–2.80 h), systemic clearance (i.e., 691–865 mL/h/kg), and steady state volume of distribution (i.e., 2040–3500 mL/kg) of supinoxin remained unchanged, suggesting dose-independent (i.e., dose-proportional) pharmacokinetics for the dose ranges studied. After oral administration, supinoxin showed modest absorption with an absolute oral bioavailability of 56.9–57.4%. The fecal recovery following intravenous and oral administration was 16.5% and 46.8%, respectively, whereas the urinary recoveries in both administration routes were negligible. Supinoxin was mainly eliminated via NADPH-dependent phase I metabolism (i.e., 58.5% of total clearance), while UDPGA-dependent phase II metabolism appeared negligible in the rat liver microsome. Supinoxin was most abundantly distributed in the adipose tissue, gut, and liver among the nine major tissues studied (i.e., the brain, liver, kidneys, heart, lungs, spleen, gut, muscles, and adipose tissue), and the tissue exposure profiles of supinoxin were well predicted with physiologically based pharmacokinetics.

Tamarix articulata (T. articulata) - An Important Halophytic Medicinal Plant with Potential Pharmacological Properties

2019 ◽  
Vol 20 (4) ◽  
pp. 285-292 ◽  
Author(s):  
Abdullah M. Alnuqaydan ◽  
Bilal Rah
Keyword(s):  
Medicinal Plant ◽  
Biological Activities ◽  
Wide Spectrum ◽  
Biological Properties ◽  
In Vivo Model ◽  
Drug Candidate ◽  
Phytochemical Analysis ◽  
Pharmacological Properties

Background:Tamarix Articulata (T. articulata), commonly known as Tamarisk or Athal in Arabic region, belongs to the Tamaricaece species. It is an important halophytic medicinal plant and a good source of polyphenolic phytochemical(s). In traditional medicines, T. articulata extract is commonly used, either singly or in combination with other plant extracts against different ailments since ancient times.Methods:Electronic database survey via Pubmed, Google Scholar, Researchgate, Scopus and Science Direct were used to review the scientific inputs until October 2018, by searching appropriate keywords. Literature related to pharmacological activities of T. articulata, Tamarix species, phytochemical analysis of T. articulata, biological activities of T. articulata extracts. All of these terms were used to search the scientific literature associated with T. articulata; the dosage of extract, route of administration, extract type, and in-vitro and in-vivo model.Results:Numerous reports revealed that T. articulata contains a wide spectrum of phytochemical(s), which enables it to have a wide window of biological properties. Owing to the presence of high content of phytochemical compounds like polyphenolics and flavonoids, T. articulata is a potential source of antioxidant, anti-inflammatory and antiproliferative properties. In view of these pharmacological properties, T. articulata could be a potential drug candidate to treat various clinical conditions including cancer in the near future.Conclusion:In this review, the spectrum of phytochemical(s) has been summarized for their pharmacological properties and the mechanisms of action, and the possible potential therapeutic applications of this plant against various diseases discussed.

In Vitro and In Vivo Investigations into the Carbene Copper Bromide Anticancer Drug Candidate WBC4

2014 ◽  
Vol 11 (7) ◽  
pp. 825-832 ◽  
Author(s):  
Wolfgang Walther ◽  
Iduna Fichtner ◽  
Frauke Hackenberg ◽  
Wojciech Streciwilk ◽  
Matthias Tacke
Keyword(s):  
Anticancer Drug ◽  
Drug Candidate ◽  
Copper Bromide

scholarly journals Development of Physiologically Based Pharmacokinetic Model for Orally Administered Fexuprazan in Humans

Pharmaceutics ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 813
Author(s):  
Yoo-Seong Jeong ◽  
Min-Soo Kim ◽  
Nora Lee ◽  
Areum Lee ◽  
Yoon-Jee Chae ◽  
...  
Keyword(s):  
Gastric Acid ◽  
Pbpk Model ◽  
Pbpk Modeling ◽  
Drug Candidate ◽  
Metabolite Formation ◽  
Pbpk Models ◽  
Physiologically Based Pharmacokinetic ◽  
Physiologically Based

Fexuprazan is a new drug candidate in the potassium-competitive acid blocker (P-CAB) family. As proton pump inhibitors (PPIs), P-CABs inhibit gastric acid secretion and can be used to treat gastric acid-related disorders such as gastroesophageal reflux disease (GERD). Physiologically based pharmacokinetic (PBPK) models predict drug interactions as pharmacokinetic profiles in biological matrices can be mechanistically simulated. Here, we propose an optimized and validated PBPK model for fexuprazan by integrating in vitro, in vivo, and in silico data. The extent of fexuprazan tissue distribution in humans was predicted using tissue-to-plasma partition coefficients in rats and the allometric relationships of fexuprazan distribution volumes (VSS) among preclinical species. Urinary fexuprazan excretion was minimal (0.29–2.02%), and this drug was eliminated primarily by the liver and metabolite formation. The fraction absorbed (Fa) of 0.761, estimated from the PBPK modeling, was consistent with the physicochemical properties of fexuprazan, including its in vitro solubility and permeability. The predicted oral bioavailability of fexuprazan (38.4–38.6%) was within the range of the preclinical datasets. The Cmax, AUClast, and time-concentration profiles predicted by the PBPK model established by the learning set were accurately predicted for the validation sets.

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