A reduced pazopanib dose with food: Is it more patient-friendly and does it reduce drug costs?

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 4564-4564 ◽  
Author(s):  
Floor Lubberman ◽  
Hans Gelderblom ◽  
Paul Hamberg ◽  
Walter Vervenne ◽  
Sasja F. Mulder ◽  
...  
Keyword(s):  
Cost Reduction ◽  
Geometric Mean ◽  
Bioequivalence Study ◽  
Geometric Mean Ratio ◽  
Advanced Soft Tissue Sarcoma ◽  
Time Curve ◽  
Concentration Time ◽  
Daily Dose ◽  
Gi Toxicity ◽  
Clinical Trial Information

4564 Background: Pazopanib has been licensed for advanced soft tissue sarcoma and metastatic renal cell carcinoma in a fixed oral daily dose of 800mg taken fasted. We hypothesized that ingesting pazopanib with food may improve patients’ comfort and reduce gastro-intestinal adverse events. Moreover, a food intervention, resulting in a better absorption, can lead to a lower dose, which could significantly reduce treatment costs. Methods: Part 1 of the study was performed to determine whether 600mg pazopanib taken with a continental breakfast was bioequivalent to 800mg pazopanib taken fasted. In part 2, differences in GI-toxicity and patient satisfaction were assessed by the cancer-therapy-satisfaction-questionnaire after both intake regimens. Finally, patient’s preference for either intake regimen was asked. Results: 16 patients were included in the bioequivalence study. The geometric mean ratio (fed/fasted) of the area under the plasma concentration time curve was 1.10 (90% CI 1.00-1.19), maximum peak concentration was 1.12 (90% CI 1.02-1.22) and pazopanib trough concentration was 1.10 (90% CI 1.02-1.18). In part 2, 60 patients were included. No differences were seen in the occurrence of GI-toxicities under both intake regimens. Patients seem to be more positive about their feelings about side effects (72.3(95% CI 68.1-76.5) vs 68·2 (62.7-73.6); p=.092) and satisfaction with therapy scores were higher (84.7(95% CI 81.4-87.9) vs 81.9 (78.7-85.2); p= .059) when pazopanib was taken with food. 41 (68%) of the patients preferred the intake with continental breakfast. Conclusions: Intake of 600mg pazopanib with food results in bioequivalent exposure and was preferred over a standard pazopanib dose without food. Moreover, with this simple food intervention a large cost reduction can be realized in patients treated with pazopanib. Clinical trial information: NCT02138526.

scholarly journals Assessment of Drug-Drug Interactions between Daclatasvir and Methadone or Buprenorphine-Naloxone

2015 ◽  
Vol 59 (9) ◽  
pp. 5503-5510 ◽  
Author(s):  
T. Garimella ◽  
R. Wang ◽  
W.-L. Luo ◽  
P. Wastall ◽  
H. Kandoussi ◽  
...  
Keyword(s):  
Geometric Mean ◽  
Standardized Assessments ◽  
Geometric Mean Ratio ◽  
Plasma Exposure ◽  
Primary Analysis ◽  
Time Curve ◽  
Replication Complex ◽  
Concentration Time ◽  
Stable Plasma ◽  
Relevant Interaction

ABSTRACTHepatitis C virus (HCV) infection is common among people who inject drugs, including those managed with maintenance opioids. Pharmacokinetic interactions between opioids and emerging oral HCV antivirals merit evaluation. Daclatasvir is a potent pangenotypic inhibitor of the HCV NS5A replication complex recently approved for HCV treatment in Europe and Japan in combination with other antivirals. The effect of steady-state daclatasvir (60 mg daily) on stable plasma exposure to oral opioids was assessed in non-HCV-infected subjects receiving methadone (40 to 120 mg;n= 14) or buprenorphine plus naloxone (8 to 24 mg plus 2 to 6 mg;n= 11). No relevant interaction was inferred if the 90% confidence interval (CI) of the geometric mean ratio (GMR) of opioid area under the plasma concentration-time curve over the dosing interval (AUCτ) or maximum concentration in plasma (Cmax) with versus without daclatasvir was within literature-derived ranges of 0.7 to 1.43 (R- andS-methadone) or 0.5 to 2.0 (buprenorphine and norbuprenorphine). Dose-normalized AUCτ forR-methadone (GMR, 1.08; 90% CI, 0.94 to 1.24),S-methadone (1.13; 0.99 to 1.30), and buprenorphine (GMR, 1.37; 90% CI, 1.24 to 1.52) were within the no-effect range. The norbuprenorphine AUCτ was slightly elevated in the primary analysis (GMR, 1.62; 90% CI, 1.30 to 2.02) but within the no-effect range in a supplementary analysis of all evaluable subjects. Dose-normalizedCmaxfor both methadone enantiomers, buprenorphine and norbuprenorphine, were within the no-effect range. Standardized assessments of opioid pharmacodynamics were unchanged throughout daclatasvir administration with methadone or buprenorphine. Daclatasvir pharmacokinetics were similar to historical data. Coadministration of daclatasvir and opioids was generally well tolerated. In conclusion, these data suggest that daclatasvir can be administered with buprenorphine or methadone without dose adjustments.

Bioequivalence Study of Rivastigmine 6 mg Capsules (Single Dose) in Healthy Volunteers

2017 ◽  
Vol 32 (6) ◽  
pp. 360-366
Author(s):  
Dhiraj Abhyankar ◽  
Ashish Shedage ◽  
Milind Gole ◽  
Preeti Raut
Keyword(s):  
Single Dose ◽  
Standard Deviation ◽  
Geometric Mean ◽  
Bioequivalence Study ◽  
Open Label ◽  
Time Curve ◽  
Healthy Men ◽  
Time Zero ◽  
Concentration Time ◽  
To Receive

Objective: To assess the bioequivalence of generic formulation of rivastigmine (test) and Exelon (reference). Methods: This randomized, open-label, 2-period, single-dose, 2-treatment, 2-sequence, crossover study was conducted in 40 healthy men under fed condition. Participants were randomized to receive a single dose of Exelon or rivastigmine capsule. Results: A total of 31 participants completed the study. Area under the concentration–time curve from time zero to time t (AUC0- t) and area under the concentration–time curve from time zero to infinity (AUC0-∞) for Exelon (mean [standard deviation], h·ng/mL) were 126.40 (56.95) and 129.46 (59.94), respectively, while they were 122.73 (43.46) and 125.08 (45.39) for rivastigmine. Geometric mean ratios of rivastigmine/Exelon were 99.17% for AUC0- t, 98.81% for AUC0-∞, and 105% for maximum observed plasma concentration ( Cmax). The 90% confidence intervals (CIs) were 94.14% to 104.46%, 93.77% to 104.12%, and 93.08% to 118.44%, respectively. Both formulations were well tolerated. Conclusion: The generic and reference formulations were bioequivalent, as the 90% CIs for Cmax, AUC0- t, and AUC0-∞ were within the range of 80% to 125%.

scholarly journals Pharmacokinetic Interactions between the Hormonal Emergency Contraception, Levonorgestrel (Plan B), and Efavirenz

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Monica L. Carten ◽  
Jennifer J. Kiser ◽  
Awewura Kwara ◽  
Samantha Mawhinney ◽  
Susan Cu-Uvin
Keyword(s):  
Geometric Mean ◽  
Liver Function Tests ◽  
Open Label ◽  
Time Curve ◽  
Geometric Means ◽  
Concentration Time ◽  
Plan B ◽  
Effective Contraception ◽  
Grade 3 ◽  
Hiv Negative

Objectives. Compare the Plan B levonorgestrel (LNG) area under the concentration- time curve (AUC12) prior to and with efavirenz (EFV).Design. Prospective, open-label, single-arm, equivalence study.Methods. Healthy HIV-negative subjects underwent 12 hr intensive pharmacokinetic (PK) sampling following single dose LNG alone and after 14 days of EFV. Geometric means, Geometric Mean Ratios, and 90% confidence intervals (CI) are reported for PK Parameters.T-tests were utilized. Clinical parameters and liver function tests (LFTs) were assessed.Results. 24 women enrolled and 21 completed the study. With EFV, LNG AUC12was reduced 56% (95% CI: 49%, 62%) from 42.9 to 17.8 ng*hr/mL, and maximum concentration (Cmax⁡) was reduced 41% (95% CI: 33%, 50%) from 8.4 to 4.6 ng/mL. LNG was well tolerated with no grade 3 or 4 treatment-related toxicities.Conclusions. EFV significantly reduced LNG exposures. Higher LNG doses may be required with EFV. These results reinforce the importance of effective contraception in women taking EFV.

scholarly journals Pharmacokinetics of Lopinavir-Ritonavir with and without Nonnucleoside Reverse Transcriptase Inhibitors in Ugandan HIV-Infected Adults

2010 ◽  
Vol 54 (7) ◽  
pp. 2965-2973 ◽  
Author(s):  
C. Kityo ◽  
A. S. Walker ◽  
L. Dickinson ◽  
F. Lutwama ◽  
J. Kayiwa ◽  
...  
Keyword(s):  
Reverse Transcriptase ◽  
Geometric Mean ◽  
Oral Clearance ◽  
Reverse Transcriptase Inhibitors ◽  
Time Curve ◽  
Nonnucleoside Reverse Transcriptase Inhibitors ◽  
Concentration Time ◽  
Half Dose ◽  
Trial Participants ◽  
Dose Tablet

ABSTRACT We evaluated the pharmacokinetics of lopinavir-ritonavir with and without nonnucleoside reverse transcriptase inhibitors (NNRTIs) in Ugandan adults. The study design was a three-period crossover study (3 tablets [600 mg of lopinavir/150 mg of ritonavir {600/150 mg}], 4 capsules [533/133 mg], and 2 tablets [400/100 mg] twice a day [BD]; n = 40) of lopinavir-ritonavir with NNRTIs and a parallel one-period study (2 tablets BD; n = 20) without NNRTIs. Six-point pharmacokinetic sampling (0, 2, 4, 6, 8, and 12 h) was undertaken after observed intake with a standardized breakfast. Ugandan DART trial participants receiving efavirenz (n = 20), nevirapine (n = 18), and no NNRTI (n = 20) had median ages of 41, 35, and 37 years, respectively, and median weights of 60, 64, and 63 kg, respectively. For the no-NNRTI group, the geometric mean (percent coefficient of variation [%CV]) lopinavir area under the concentration-time curve from 0 to 12 h (AUC0-12) was 110.1 (34%) μg·h/liter. For efavirenz, the geometric mean lopinavir AUC0-12 (%CV) values were 91.8 μg·h/liter (58%), 65.7 μg·h/liter (39%), and 54.0 μg·h/liter (65%) with 3 tablets, 4 capsules, and 2 tablets BD, respectively, with corresponding (within-individual) geometric mean ratios (GMR) for 3 and 2 tablets versus 4 capsules of 1.40 (90% confidence interval [CI], 1.18 to 1.65; P = 0.002) and 0.82 (90% CI, 0.68 to 0.99; P = 0.09), respectively, and the apparent oral clearance (CL/F) values were reduced by 58% and 1%, respectively. For nevirapine, the geometric mean lopinavir AUC0-12 (%CV) values were 112.9 μg·h/liter (30%), 68.1 μg·h/liter (53%), and 61.5 μg·h/liter (52%), respectively, with corresponding GMR values of 1.66 (90% CI, 1.46 to 1.88; P < 0.001) and 0.90 (90% CI, 0.77 to 1.06; P = 0.27), respectively, and the CL/F was reduced by 57% and 7%, respectively. Higher values for the lopinavir concentration at 12 h (C 12) were observed with 3 tablets and efavirenz-nevirapine (P = 0.04 and P = 0.0005, respectively), and marginally lower C 12 values were observed with 2 tablets and efavirenz-nevirapine (P = 0.08 and P = 0.26, respectively). These data suggest that 2 tablets of lopinavir-ritonavir BD may be inadequate when dosed with NNRTIs in Ugandan adults, and the dosage should be increased by the addition of an additional adult tablet or a half-dose tablet (100/25 mg), where available.

scholarly journals Effects of a High-Fat Meal on the Relative Oral Bioavailability of Piperaquine

2005 ◽  
Vol 49 (6) ◽  
pp. 2407-2411 ◽  
Author(s):  
Ing-Kye Sim ◽  
Timothy M. E. Davis ◽  
Kenneth F. Ilett
Keyword(s):  
Oral Bioavailability ◽  
Geometric Mean ◽  
Pharmacokinetic Analysis ◽  
Lipid Solubility ◽  
Fasting State ◽  
High Fat ◽  
Time Curve ◽  
Hematological Indices ◽  
Concentration Time ◽  
Fat Meal

ABSTRACT Piperaquine (PQ) is an antimalarial drug whose high lipid solubility suggests that its absorption can be increased by a high-fat meal. We examined the pharmacokinetics of PQ phosphate (500 mg given orally) in the fasting state and after a high-fat meal in eight healthy Caucasian volunteers (randomized crossover). Plasma PQ concentration-time profiles were analyzed by using noncompartmental pharmacokinetic analysis. In the fed state, the geometric mean C max increased by 213%, from 21.0 to 65.8 μg/liter (P < 0.001). The time of C max was not significantly different between the fasting and fed states. The geometric mean area under the concentration-time curve from zero onward (AUC0-∞) increased by 98%, from 3,724 to 7,362 μg h/liter (P = 0.006). The oral bioavailability of PQ relative to the fasting state was 121% greater after the high-fat meal (95% confidence interval, 26 to 216% increase; P = 0.020). The side effects, postural blood pressure changes, electrocardiographic corrected QT interval, serum glucose, and other biochemical and hematological indices were similar in the fasting and fed states over 28 days of follow-up.

scholarly journals Open-Label Crossover Study of Primaquine and Dihydroartemisinin-Piperaquine Pharmacokinetics in Healthy Adult Thai Subjects

2014 ◽  
Vol 58 (12) ◽  
pp. 7340-7346 ◽  
Author(s):  
Borimas Hanboonkunupakarn ◽  
Elizabeth A. Ashley ◽  
Podjanee Jittamala ◽  
Joel Tarning ◽  
Sasithon Pukrittayakamee ◽  
...  
Keyword(s):  
Crossover Study ◽  
Hospital Admissions ◽  
Geometric Mean ◽  
Radical Cure ◽  
Open Label ◽  
Time Curve ◽  
Content Type ◽  
Concentration Time ◽  
Pharmacokinetic Assessment ◽  
Adult Volunteers

ABSTRACTDihydroartemisinin-piperaquine is an artemisinin-based combination treatment (ACT) recommended by the WHO for uncomplicatedPlasmodium falciparummalaria, and it is being used increasingly for resistant vivax malaria where combination with primaquine is required for radical cure. The WHO recently reinforced its recommendations to add a single dose of primaquine to ACTs to reduceP. falciparumtransmission in low-transmission settings. The pharmacokinetics of primaquine and dihydroartemisinin-piperaquine were evaluated in 16 healthy Thai adult volunteers in a randomized crossover study. Volunteers were randomized to two groups of three sequential hospital admissions to receive 30 mg (base) primaquine, 3 tablets of dihydroartemisinin-piperaquine (120/960 mg), and the drugs together at the same doses. Blood sampling was performed over 3 days following primaquine and 36 days following dihydroartemisinin-piperaquine dosing. Pharmacokinetic assessment was done with a noncompartmental approach. The drugs were well tolerated. There were no statistically significant differences in dihydroartemisinin and piperaquine pharmacokinetics with or without primaquine. Dihydroartemisinin-piperaquine coadministration significantly increased plasma primaquine levels; geometric mean ratios (90% confidence interval [CI]) of primaquine combined versus primaquine alone for maximum concentration (Cmax), area under the concentration-time curve from 0 h to the end of the study (AUC0–last), and area under the concentration-time curve from 0 h to infinity (AUC0–∞) were 148% (117 to 187%), 129% (103 to 163%), and 128% (102 to 161%), respectively. This interaction is similar to that described recently with chloroquine and may result in an enhanced radical curative effect. (This study has been registered at ClinicalTrials.gov under registration no. NCT01525511.)

scholarly journals Phase I Study Assessing the Pharmacokinetic Profile, Safety, and Tolerability of a Single Dose of Ceftazidime-Avibactam in Hospitalized Pediatric Patients

2016 ◽  
Vol 60 (10) ◽  
pp. 6252-6259 ◽  
Author(s):  
John S. Bradley ◽  
Jon Armstrong ◽  
Antonio Arrieta ◽  
Raafat Bishai ◽  
Shampa Das ◽  
...  
Keyword(s):  
Single Dose ◽  
Phase I ◽  
Pediatric Patients ◽  
Geometric Mean ◽  
Open Label ◽  
Serious Adverse Events ◽  
Time Curve ◽  
Age Cohorts ◽  
Concentration Time ◽  
Systemic Antibiotic Therapy

ABSTRACTThis study aimed to investigate the pharmacokinetics (PK), safety, and tolerability of a single dose of ceftazidime-avibactam in pediatric patients. A phase I, multicenter, open-label PK study was conducted in pediatric patients hospitalized with an infection and receiving systemic antibiotic therapy. Patients were enrolled into four age cohorts (cohort 1, ≥12 to <18 years; cohort 2, ≥6 to <12 years; cohort 3, ≥2 to <6 years; cohort 4, ≥3 months to <2 years). Patients received a single 2-h intravenous infusion of ceftazidime-avibactam (cohort 1, 2,000 to 500 mg; cohort 2, 2,000 to 500 mg [≥40 kg] or 50 to 12.5 mg/kg [<40 kg]; cohorts 3 and 4, 50 to 12.5 mg/kg). Blood samples were collected to describe individual PK characteristics for ceftazidime and avibactam. Population PK modeling was used to describe characteristics of ceftazidime and avibactam PK across all age groups. Safety and tolerability were assessed. Thirty-two patients received study drug. Mean plasma concentration-time curves, geometric mean maximum concentration (Cmax), and area under the concentration-time curve from time zero to infinity (AUC0–∞) were similar across all cohorts for both drugs. Six patients (18.8%) reported an adverse event, all mild or moderate in intensity. No deaths or serious adverse events occurred. The single-dose PK of ceftazidime and avibactam were comparable between each of the 4 age cohorts investigated and were broadly similar to those previously observed in adults. No new safety concerns were identified. (This study has been registered at ClinicalTrials.gov under registration no. NCT01893346.)

scholarly journals Pharmacokinetics of Telbivudine in Healthy Subjects and Absence of Drug Interaction with Lamivudine or Adefovir Dipivoxil

2006 ◽  
Vol 50 (7) ◽  
pp. 2309-2315 ◽  
Author(s):  
Xiao-Jian Zhou ◽  
Barbara A. Fielman ◽  
Deborah M. Lloyd ◽  
George C. Chao ◽  
Nathaniel A. Brown
Keyword(s):  
Single Dose ◽  
Steady State ◽  
Plasma Concentration ◽  
Healthy Subjects ◽  
Adefovir Dipivoxil ◽  
Geometric Mean ◽  
Time Curve ◽  
Concentration Time ◽  
Plasma Pharmacokinetics ◽  
Plasma Concentration Time Curve

ABSTRACT Two phase I studies were conducted to assess the plasma pharmacokinetics of telbivudine and potential drug-drug interactions between telbivudine (200 or 600 mg/day) and lamivudine (100 mg/day) or adefovir dipivoxil (10 mg/day) in healthy subjects. Study drugs were administered orally. The pharmacokinetics of telbivudine were characterized by rapid absorption with biphasic disposition. The maximum concentrations in plasma (C max) were reached at median times ranging from 2.5 to 3.0 h after dosing. Mean single-dose C max and area under the plasma concentration-time curve from time zero to infinity (AUC0-∞) were 1.1 and 2.9 μg/ml and 7.4 and 21.8 μg · h/ml for the 200- and 600-mg telbivudine doses, respectively. Steady state was reached after daily dosing for 5 to 7 days. The mean steady-state C max and area under the plasma concentration-time curve over the dosing interval (AUCτ) were 1.2 and 3.4 μg/ml and 8.9 and 27.5 μg · h/ml for the 200- and 600-mg telbivudine repeat doses, respectively. The steady-state AUCτ of telbivudine was 23 to 57% higher than the single-dose values. Concomitant lamivudine or adefovir dipivoxil did not appear to significantly alter the steady-state plasma pharmacokinetics of telbivudine; the geometric mean ratios and associated 90% confidence interval (CI) for the AUCτ of telbivudine alone versus in combination were 106.3% (92.0 to 122.8%) and 98.6% (86.4 to 112.5%) when coadministered with lamivudine and adefovir dipivoxil, respectively. Similarly, the steady-state plasma pharmacokinetics of lamivudine or adefovir were not markedly affected by the coadministration of telbivudine; the geometric mean ratios and associated 90% CI, alone versus in combination with telbivudine, were 99.0% (87.1 to 112.4%) and 92.2% (84.0 to 101.1%), respectively, for the lamivudine and adefovir AUCτ values. Moreover, the combination regimens studied were well tolerated in all subjects. The results from these studies provide pharmacologic support for combination therapy or therapy switching involving telbivudine, lamivudine, and adefovir dipivoxil for the treatment of chronic hepatitis B virus infection.

scholarly journals Pharmacokinetics of Indinavir Combined with Low-Dose Ritonavir in Human Immunodeficiency Virus Type 1-Infected Children

2004 ◽  
Vol 48 (5) ◽  
pp. 1904-1907 ◽  
Author(s):  
A. S. Bergshoeff ◽  
P. L. A. Fraaij ◽  
A. M. C. van Rossum ◽  
G. Verweel ◽  
L. H. Wynne ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Human Immunodeficiency Virus Type ◽  
Virus Type ◽  
Low Dose ◽  
Geometric Mean ◽  
Time Curve ◽  
Minimum Concentration ◽  
Concentration Time ◽  
Immunodeficiency Virus

ABSTRACT So far, no pediatric doses for indinavir combined with ritonavir have been defined. This study evaluated the pharmacokinetics of 400 mg of indinavir/m2 combined with 125 mg of ritonavir/m2 every 12 h (q12h) in 14 human immunodeficiency virus type 1-infected children. The area under the concentration-time curve from 0 to 24 h and the minimum concentration of drug in serum for indinavir were similar to those for 800 mg of indinavir-100 mg of ritonavir q12h in adults, while the maximum concentration of drug in serum was slightly decreased, with geometric mean ratios (90% confidence intervals in parentheses) of 1.1 (0.87 to 1.3), 0.96 (0.60 to 1.5), and 0.80 (0.68 to 0.94), respectively.

Safety, Pharmacokinetic, and Pharmacodynamic Phase I Dose-Escalation Trial of PF-00562271, an Inhibitor of Focal Adhesion Kinase, in Advanced Solid Tumors

2012 ◽  
Vol 30 (13) ◽  
pp. 1527-1533 ◽  
Author(s):  
Jeffrey R. Infante ◽  
D. Ross Camidge ◽  
Linda R. Mileshkin ◽  
Eric X. Chen ◽  
Rodney J. Hicks ◽  
...  
Keyword(s):  
Serum Concentration ◽  
Focal Adhesion Kinase ◽  
Focal Adhesion ◽  
Dose Escalation ◽  
Group Performance ◽  
Geometric Mean ◽  
Performance Status ◽  
Eastern Cooperative Oncology Group ◽  
Time Curve ◽  
Concentration Time

Purpose PF-00562271 is a novel inhibitor of focal adhesion kinase (FAK). The objectives of this study were to identify the recommended phase II dose (RP2D) and assess safety and tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and antitumor activity of PF-00562271. Patients and Methods Part 1 was a dose escalation without and with food. Part 2 enrolled specific tumor types in an expansion at the RP2D and also assessed the effect of PF-00562271 on single-dose midazolam PK in a subgroup of patients. Results Ninety-nine patients (median age, 60 years; 98% with Eastern Cooperative Oncology Group performance status of 0 or 1) were treated in 12 fasting and three fed cohorts. The 125-mg twice-per-day fed dose was deemed the maximum-tolerated dose (MTD) and RP2D. Grade 3 dose-limiting toxicities included headache, nausea/vomiting, dehydration, and edema. Nausea was the most frequently observed toxicity (60% of patients, all grades 1 or 2 at RP2D). PF-00562271 exposure increased with increasing dose; serum concentration–time profiles showed characteristic nonlinear disposition. Steady-state exposures were reached within 1 week. On coadministration, geometric mean values of midazolam maximal observed serum concentration and area under the serum concentration–time curve increased by 60% and more than two-fold, respectively. Of 14 patients evaluable by [18F]fluorodeoxyglucose positron emission tomography in the expansion cohorts, seven metabolic responses were observed. With conventional imaging, 31 patients had stable disease at first restaging scans, and 15 of these remained stable for six or more cycles. Conclusion The MTD and RP2D of PF-00562271 is 125 mg twice per day with food. PF-00562271 displayed time- and dose-dependent nonlinear PK and is likely a potent CYP 3A inhibitor. This first-in-class study supports further investigation of FAK as a promising therapeutic target.

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