Abstract:
:Safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of ATR-107, a fully human monoclonal anti-IL-21 receptor (IL-21R) antibody, administered as ascending single doses, subcutaneously or intravenously, was evaluated in a placebo-controlled, double-blind trial in healthy subjects. The dose levels were 3-300 mg by SC and 30-120 mg by IV. The most important adverse events were hypersensitivity reactions occurring in three out of six subjects in 300 mg SC cohort and considered as dose limiting toxicity. More than 75% of the subjects who received ATR-107 developed anti-drug antibodies (ADAs), which had no discernible impact on PK or safety. The PK of ATR-107 appeared to be dose -proportional. T1/2 was shorter than typical therapeutic antibodies. Bioavailability of ATR-107 was about 30%. IL-21R occupancy was measured in circulating B cells in the 60 and 120 mg IV cohort. The data indicated that single dose of ATR-107 was able to maximally occupy IL-21Rs through at least Day 42. Further escalation in the FIH study was halted partially due to the high rates of ADA formation. In conclusion, ATR-107 had a prolonged PD effect measured by IL-21R occupancy; was highly immunogenic after single dose administration and had PK properties with rapid clearance and low bioavailability.
journal_name
J Clin Pharmacoljournal_title
Journal of clinical pharmacologyauthors
Hua F,Comer GM,Stockert L,Jin B,Nowak J,Pleasic-Williams S,Wunderlich D,Cheng J,Beebe JSdoi
10.1002/jcph.158subject
Has Abstractpub_date
2014-01-01 00:00:00pages
14-22issue
1eissn
0091-2700issn
1552-4604journal_volume
54pub_type
杂志文章,多中心研究abstract::Antibody-drug conjugates (ADCs) represent an innovative therapeutic approach that provides novel treatment options and hope for patients with cancer. By coupling monoclonal antibodies (mAbs) to cytotoxic small-molecule payloads with a plasma-stable linker, ADCs offer the potential for increased drug specificity and fe...
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journal_title:Journal of clinical pharmacology
pub_type: 杂志文章,多中心研究,随机对照试验
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abstract::Clinical pharmacology of L-asparaginase was compared by intramuscular and intravenous injections in 12 patients with metastatic cancer or leukemia. Following a single intramuscular injection at the gluteal site of L-asparaginase (10,000 IU/m2), the enzyme appeared in plasma as measured initially at 1 hour, but plateau...
journal_title:Journal of clinical pharmacology
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doi:10.1002/j.1552-4604.1981.tb01752.x
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abstract::The analgesic activity of buprenorphine was monitored versus that of morphine in a double-blind, randomized, multiple-dose, parallel-design study involving 97 postsurgical patients. Patients could receive intramuscular injections of either buprenorphine (0.3, o.45, or 0.6 mg) or morphine (10, 15, or 20 mg) every 3 or ...
journal_title:Journal of clinical pharmacology
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abstract::Due to the prevalence of both gastrointestinal and cardiovascular diseases, it is likely that patients may be coprescribed gastric parietal cell proton pump inhibitors and beta-adrenergic antagonists. Therefore, the objectives of this phase I study were to assess the potential effects of the coadministration of lansop...
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journal_title:Journal of clinical pharmacology
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abstract::Cannabichromene (CBC) is one of four major cannabinoids in Cannabis sativa L. and is the second most abundant cannabinoid in drug-type cannabis. Cannabichromene and some of its homologs, analogs, and isomers were evaluated for antiinflammatory, antibacterial, and antifungal activity. Antiinflammatory activity was eval...
journal_title:Journal of clinical pharmacology
pub_type: 杂志文章
doi:10.1002/j.1552-4604.1981.tb02606.x
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abstract::Controlled-onset extended-release verapamil (COER-V) is designed so drug concentrations rise sharply in the early morning to coincide with the peak incidence of cardiovascular events. The primary objective of this study was to compare the diurnal pattern of forearm vascular resistance (FVR) between hypertensives and n...
journal_title:Journal of clinical pharmacology
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abstract::The need for clinical pharmacology in research and education, drug development, and health care delivery is well known. However, a current profile of those working in the field is not available. The ACCP authorized a survey of clinical pharmacologists to provide such a profile. Members of the ACCP or ASCPT were solici...
journal_title:Journal of clinical pharmacology
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abstract::The absolute bioavailability of oral melatonin tablets was studied in 12 normal healthy volunteers. Subjects were administered, in a randomized crossover fashion, melatonin 2 mg intravenously and 2 and 4 mg orally. Blood was sampled over approximately eight (estimated) half-lives. Both the 2 and the 4 mg oral dosages ...
journal_title:Journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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abstract::Although glucocorticoids and cyclosporine are frequently used to treat patients with various types of glomerulopathy, clinical responses to treatment vary considerably. Considerable interindividual heterogeneity in the suppressive effects of glucocorticoids on lymphocyte proliferation in vitro has been previously repo...
journal_title:Journal of clinical pharmacology
pub_type: 杂志文章
doi:10.1002/j.1552-4604.1996.tb04760.x
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abstract::Sixteen healthy male volunteers received a single oral dose of 25 mg doxylamine succinate. Doxylamine concentrations in plasma were measured by a newly developed gas chromatographic methodology, utilizing direct alkaline extraction into hexane:isoamyl alcohol followed by concentration and autoinjection. Doxylamine kin...
journal_title:Journal of clinical pharmacology
pub_type: 杂志文章
doi:10.1002/j.1552-4604.1985.tb02875.x
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abstract::A bioequivalence study of two oral formulations of 300 mg ranitidine was carried out in 16 healthy volunteers (8 men and 8 women), and the pharmacokinetics in both sexes were compared. There was bioequivalence of both formulations. The terminal half-life of ranitidine was 7% shorter and the oral apparent clearance 10....
journal_title:Journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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abstract::Ceftaroline, the active form of ceftaroline fosamil, is a broad-spectrum cephalosporin antibiotic. A population pharmacokinetic (PPK) model for ceftaroline was developed in NONMEM® using data from 185 healthy subjects and 92 patients with acute bacterial skin and skin structure infection (ABSSSI). Data from 128 patien...
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journal_title:Journal of clinical pharmacology
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abstract::CGS 13080, a selective thromboxane synthetase inhibitor, was given intravenously (0.6 mg/kg over 6 hours) to eight hypertensive (diastolic 95-115 mm Hg) euvolemic caucasian females on their customary salt intake (24 hour urine Na: 142.9 +/- 14.8 meq). No change occurred in blood pressure or glomerular filtration rate ...
journal_title:Journal of clinical pharmacology
pub_type: 临床试验,杂志文章
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abstract::Following oral administration of a single 500-mg dose of cefalexin, serum and urine levels of the antibiotic were determined comparatively in ten normal subjects, ten patients with renal impairment, and ten patients with chronic nephritis on maintenance hemodialysis. In normal subjects, mean serum peak levels (12.0 +/...
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abstract::Nilotinib, an oral inhibitor of the tyrosine kinase activity of Abelson protein, is approved for the treatment of patients with newly diagnosed chronic myeloid leukemia (CML) in chronic phase and patients with CML in chronic phase or accelerated phase resistant or intolerant to prior therapies. This review describes t...
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abstract::MC4-NN2-0453 is a novel, long-acting, selective, melanocortin-4-receptor agonist developed for treatment of obesity. This first-human-dose, randomized, double-blind, placebo-controlled trial investigated the safety, tolerability, pharmacokinetics, and pharmacodynamics of single and multiple doses of MC4-NN2-0453 in ov...
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abstract::In the pivotal TEMPO 3:4 trial, the arginine vasopressin V2-receptor antagonist tolvaptan reduced the rate of kidney growth in patients with autosomal dominant polycystic kidney disease. Tolvaptan was initiated as daily morning/afternoon doses of 45/15 mg, and uptitrated weekly to 60/30 mg and 90/30 mg according to pa...
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journal_title:Journal of clinical pharmacology
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abstract::Eleven subjects completed a clinical trial to determine the safety/tolerability of freeze-dried black raspberries (BRB) and to measure, in plasma and urine, specific anthocyanins-cyanidin-3-glucoside, cyanidin-3-sambubioside, cyanidin-3-rutinoside, and cyanidin-3-xylosylrutinoside, as well as ellagic acid. Subjects we...
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abstract::Understanding how inhibition of cytochrome P4503A (CYP3A) affects the metabolism of a new drug is critical in determining if a clinically relevant drug interaction will occur. Diltiazem interaction studies assess a given compound's sensitivity to moderate CYP3A inhibition. The present study compared the effect differe...
journal_title:Journal of clinical pharmacology
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abstract::Varenicline is a novel selective α4β2 nicotinic acetylcholine partial agonist developed for smoking cessation. Single- and multiple dose studies were conducted to investigate pharmacokinetics, safety, and tolerability of varenicline in healthy male Japanese smokers. The single-dose study was conducted as a double-blin...
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abstract::The inhibitory effects of isoflavones (daidzein, genistein, and glycitein) on human cytochrome P450 (CYP) 2A6 activities were investigated. Daidzein, genistein, and glycitein uncompetitively inhibited nicotine C-oxidation catalyzed by recombinant CYP2A6 expressed in baculovirus-infected insect cells with Ki values of ...
journal_title:Journal of clinical pharmacology
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abstract::Many astronauts experience intolerance to orthostatic stress after space flight, despite the ingestion of salt tablets and water equivalent to 0.9% saline just before their return to Earth. Previous research indicates that the ingestion of 1.07% saline solution increased plasma volume more than did 0.9% saline. Theref...
journal_title:Journal of clinical pharmacology
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