scholarly journals Safety and Efficacy of Tigecycline in Treatment of Skin and Skin Structure Infections: Results of a Double-Blind Phase 3 Comparison Study with Vancomycin-Aztreonam

2005 ◽  
Vol 49 (11) ◽  
pp. 4658-4666 ◽  
Author(s):  
Johannes Breedt ◽  
Jüri Teras ◽  
Janis Gardovskis ◽  
Frans Jacobus Maritz ◽  
Tiit Vaasna ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Controlled Trial ◽  
Adverse Event Reporting ◽  
Combination Group ◽  
Double Blind ◽  
Skin Structure ◽  
Mitt Population ◽  
Complicated Skin ◽  
Clinical Responses ◽  
Intent To Treat

ABSTRACT In a randomized, double-blind, controlled trial, 546 patients with complicated skin and skin structure infections received tigecycline 100 mg/day (a 100-mg initial dose and then 50 mg intravenously twice daily) or the combination of vancomycin 2 g/day (1 g intravenously twice daily) and aztreonam 4 g/day (2 g intravenously twice daily) for up to 14 days. The primary end point was the clinical response in the clinical modified intent-to-treat (c-mITT) and clinically evaluable (CE) populations at the test-of-cure visit 12 to 92 days after the last dose. The microbiologic response at the test-of-cure visit was also assessed. Safety was assessed by physical examination, laboratory results, and adverse event reporting. Five hundred twenty patients were included in the c-mITT population (tigecycline group, n = 261; combination group, n = 259), and 436 were clinically evaluable (tigecycline group, n = 223; combination group, n = 213). The clinical responses in the tigecycline and the combination vancomycin and aztreonam groups were similar in the c-mITT population (84.3% versus 86.9%; difference, −2.6% [95% confidence interval, −9.0, 3.8]; P = 0.4755) and the CE population (89.7% versus 94.4%; difference, −4.7% [95% confidence interval, −10.2, 0.8]; P = 0.1015). Microbiologic eradication (documented or presumed) occurred in 84.8% of the patients receiving tigecycline and 93.2% of the patients receiving vancomycin and aztreonam (difference, −8.5 [95% confidence interval, −16.0, −1.0]; P = 0.0243). The numbers of patients reporting adverse events were similar in the two groups, with increased nausea and vomiting rates in the tigecycline group and an increased incidence of rash and increases in alanine aminotransferase and aspartate aminotransferase levels in the combination vancomycin and aztreonam group. Tigecycline was shown to be safe and effective for the treatment of complicated skin and skin structure infections.

scholarly journals Results of a Double-Blind, Randomized Trial of Ceftobiprole Treatment of Complicated Skin and Skin Structure Infections Caused by Gram-Positive Bacteria

2007 ◽  
Vol 52 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Gary J. Noel ◽  
Richard S. Strauss ◽  
Karen Amsler ◽  
Markus Heep ◽  
Rienk Pypstra ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Study Drug ◽  
Primary Objective ◽  
Gram Positive ◽  
Taste Disturbance ◽  
Double Blind ◽  
Skin Structure ◽  
Gram Positive Bacteria ◽  
Complicated Skin ◽  
Cure Rates

ABSTRACT Ceftobiprole is the first broad-spectrum cephalosporin with activity against methicillin-resistant Staphylococcus aureus (MRSA) to be assessed in late-stage clinical trials. As a pivotal step in the clinical development of ceftobiprole, a multicenter, global, randomized, double-blind trial was conducted to compare the efficacy of ceftobiprole to that of vancomycin in patients with complicated skin and skin structure infections (cSSSIs) caused by gram-positive bacteria. The primary objective was to assess noninferiority on the basis of the cure rates 7 to 14 days after the completion of therapy in patients administered ceftobiprole 500 mg every 12 h or vancomycin 1 g every 12 h. Of 784 patients randomized, 282 receiving ceftobiprole and 277 receiving vancomycin were clinically evaluable. Of these patients, 93.3% treated with ceftobiprole and 93.5% treated with vancomycin were cured (95% confidence interval of difference, −4.4%, 3.9%). The cure rates for patients with MRSA infections were 91.8% (56/61) with ceftobiprole treatment and 90.0% (54/60) with vancomycin treatment (95% confidence interval of difference, −8.4%, 12.1%). At least one adverse event (AE) was reported by 52% of the ceftobiprole-treated patients and 51% of the vancomycin-treated patients. The most common AEs reported by the ceftobiprole-treated patients were nausea (14%) and taste disturbance (8%). Discontinuation of the study drug because of treatment-emergent AEs occurred in 4% (n = 17) of the ceftobiprole-treated patients and 6% (n = 22) of the vancomycin-treated patients. The results of this trial support the use of ceftobiprole as an effective and well-tolerated treatment option for patients with cSSSIs caused by a spectrum of gram-positive bacteria.

scholarly journals Afabicin, a First-in-Class Antistaphylococcal Antibiotic, in the Treatment of Acute Bacterial Skin and Skin Structure Infections: Clinical Noninferiority to Vancomycin/Linezolid

2020 ◽  
Vol 64 (10) ◽  
Author(s):  
Frederick Wittke ◽  
Catherine Vincent ◽  
James Chen ◽  
Barry Heller ◽  
Heidi Kabler ◽  
...  
Keyword(s):  
Acyl Carrier Protein ◽  
Acid Synthesis ◽  
High Dose ◽  
Double Blind ◽  
Content Type ◽  
Skin Structure ◽  
Treatment Groups ◽  
Mitt Population ◽  
Parallel Group ◽  
Intent To Treat

ABSTRACT Afabicin (formerly Debio 1450, AFN-1720) is a prodrug of afabicin desphosphono, an enoyl-acyl carrier protein reductase (FabI) inhibitor, and is a first-in-class antibiotic with a novel mode of action to specifically target fatty acid synthesis in Staphylococcus spp. The efficacy, safety, and tolerability of afabicin were compared with those of vancomycin/linezolid in the treatment of acute bacterial skin and skin structure infections (ABSSSI) due to staphylococci in this multicenter, parallel-group, double-blind, and double-dummy phase 2 study. Randomized patients (1:1:1) received either low-dose (LD) afabicin (intravenous [i.v.] 80 mg, followed by oral 120 mg, twice a day [BID]), high-dose (HD) afabicin (i.v. 160 mg, followed by oral 240 mg, BID), or vancomycin/linezolid (i.v. vancomycin 1 g or 15 mg/kg, followed by oral linezolid 600 mg, BID). The most frequent baseline pathogen was Staphylococcus aureus (97.5% of microbiological intent-to-treat [mITT] population), and 50.4% of patients had methicillin-resistant S. aureus. Clinical response rates at 48 to 72 h postrandomization in the mITT population were comparable among treatment groups (94.6%, 90.1%, and 91.1%, respectively). Both LD and HD afabicin were noninferior to vancomycin/linezolid (differences, −3.5% [95% confidence interval {CI}, −10.8%, 3.9%] and 1.0% [95% CI, −7.3%, 9.2%], respectively). Most common treatment-emergent adverse events were mild and were headache (9.1% and 16.8%) and nausea (6.4% and 8.4%) with LD and HD afabicin, respectively. Afabicin was efficacious and well tolerated in the treatment of ABSSSI due to staphylococci, and these data support further development of afabicin for the treatment of ABSSSI and potentially other types of staphylococcal infections. (This study has been registered at ClinicalTrials.gov under identifier NCT02426918.)

scholarly journals Telavancin for Acute Bacterial Skin and Skin Structure Infections, aPost HocAnalysis of the Phase 3 ATLAS Trials in Light of the 2013 FDA Guidance

2015 ◽  
Vol 59 (10) ◽  
pp. 6170-6174 ◽  
Author(s):  
Richard Pushkin ◽  
Steven L. Barriere ◽  
Whedy Wang ◽  
G. Ralph Corey ◽  
Martin E. Stryjewski
Keyword(s):  
Clinical Response ◽  
Lesion Size ◽  
Phase 3 ◽  
Two Phase ◽  
Skin Structure ◽  
Fda Guidance ◽  
Complicated Skin ◽  
Clinical Responses ◽  
Cure Rates ◽  
Post Hoc

ABSTRACTTwo phase 3 ATLAS trials demonstrated noninferiority of telavancin compared with vancomycin for complicated skin and skin structure infections. Data from these trials were retrospectively evaluated according to 2013 U.S. Food and Drug Administration (FDA) guidance on acute bacterial skin and skin structure infections. Thispost hocanalysis included patients with lesion sizes of ≥75 cm2and excluded patients with ulcers or burns (updated all-treated population;n= 1,127). Updated day 3 (early) clinical response was defined as a ≥20% reduction in lesion size from baseline and no rescue antibiotic. Updated test-of-cure (TOC) clinical response was defined as a ≥90% reduction in lesion size, no increase in lesion size since day 3, and no requirement for additional antibiotics or significant surgical procedures. Day 3 (early) clinical responses were achieved in 62.6% and 61.0% of patients receiving telavancin and vancomycin, respectively (difference, 1.7%, with a 95% confidence interval [CI] of −4.0% to 7.4%). Updated TOC visit cure rates were similar for telavancin (68.0%) and vancomycin (63.3%), with a difference of 4.8% (95% CI, −0.7% to 10.3%). Adopting current FDA guidance, this analysis corroborates previous noninferiority findings of the ATLAS trials of telavancin compared with vancomycin.

Lithium vs valproate in the maintenance treatment of bipolar I disorder: A post- hoc analysis of a randomized double-blind placebo-controlled trial

2019 ◽  
Vol 54 (3) ◽  
pp. 298-307
Author(s):  
Mehar G Kang ◽  
Hong Qian ◽  
Kamyar Keramatian ◽  
Trisha Chakrabarty ◽  
Gayatri Saraf ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Atypical Antipsychotic ◽  
Maintenance Treatment ◽  
Atypical Antipsychotics ◽  
Controlled Trial ◽  
Hazard Ratio ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Post Hoc Analysis ◽  
Post Hoc

Objective: Lithium and valproate are commonly used either in monotherapy or in combination with atypical antipsychotics in maintenance treatment of bipolar I disorder; however, their comparative efficacy is not well understood. This study aimed to compare the efficacy of valproate and lithium on mood stability either in monotherapy or in combination with atypical antipsychotics. Methods: We performed a post hoc analysis using data from a 52-week randomized double-blind, placebo-controlled trial, that recruited 159 patients with recently remitted mania during treatment with lithium or valproate and adjunctive atypical antipsychotic therapy. Patients were randomized to discontinue adjunctive atypical antipsychotic at 0, 24 or 52 weeks. Results: No significant differences in efficacy were observed between valproate and lithium (hazard ratio: 0.99; 95% confidence interval: [0.66, 1.48]) in time to any mood event. Valproate with 24 weeks of atypical antipsychotic was significantly superior to valproate monotherapy in preventing any mood relapse (hazard ratio: 0.46; 95% confidence interval: [0.22, 0.97]) while lithium with 24 weeks of atypical antipsychotic was superior to lithium monotherapy in preventing mania (hazard ratio: 0.27; 95% confidence interval: [0.09, 0.85]) but not depression. Conclusion: Overall, this study did not find significant differences in efficacy between the two mood-stabilizing agents when used as monotherapy or in combination with atypical antipsychotics. However, study design and small sample size might have precluded from detecting an effect if true difference in efficacy existed. Further head-to-head investigations with stratified designs are needed to evaluate maintenance therapies.

Randomized, Placebo-Controlled Trial of Clodronate in Patients With Primary Operable Breast Cancer

2002 ◽  
Vol 20 (15) ◽  
pp. 3219-3224 ◽  
Author(s):  
Trevor Powles ◽  
Sandy Paterson ◽  
John A. Kanis ◽  
Eugene McCloskey ◽  
Sue Ashley ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Bone Metastases ◽  
Controlled Trial ◽  
Multicenter Trial ◽  
Primary Treatment ◽  
Operable Breast Cancer ◽  
Double Blind ◽  
Intent To Treat ◽  
Primary Operable Breast Cancer

PURPOSE: The development of bone metastases depends on tumor-induced osteoclastic resorption of bone, which may be inhibited by the antiosteolytic bisphosphonate clodronate. Given to patients with primary breast cancer, clodronate might reduce the subsequent incidence of bone metastases. PATIENTS AND METHODS: This double-blind, multicenter trial accrued 1,069 assessable patients with operable breast cancer between 1989 and 1995. All patients received surgery, radiotherapy, chemotherapy, and tamoxifen as required. Patients were randomized to receive oral clodronate 1,600 mg/d or a placebo for 2 years starting within 6 months of primary treatment. The primary end point was relapse in bone, analyzed on an intent-to-treat basis, during the medication period and during the total follow-up period (median follow-up, 2,007 days). Secondary end points were relapse in other sites, mortality, and toxicity. RESULTS: During the total follow-up period, there was a nonsignificant reduction in occurrence of bone metastases (clodronate, n = 63; placebo, n = 80; hazards ratio [HR], 0.77; 95% confidence interval [CI], 0.56 to 1.08; P = .127). During the medication period there was a significant reduction in the occurrence of bone metastases (clodronate, n = 12; placebo, n = 28; HR, 0.44; 95% CI, 0.22 to 0.86; P = .016). The occurrence of nonosseous metastases was similar (clodronate, n = 112; placebo, n = 128; P = .257), but there was a significant reduction in mortality (clodronate, n = 98; placebo, n = 129; P = .047) during the total follow-up period. CONCLUSION: Clodronate, given to patients with primary operable breast cancer, may reduce the occurrence of bone metastases, although this reduction was only significant during this medication period. There was a significant reduction in mortality.

Cinnarizine and sodium valproate as the preventive agents of pediatric migraine: A randomized double-blind placebo-controlled trial

Cephalalgia ◽  
2019 ◽  
Vol 40 (7) ◽  
pp. 665-674
Author(s):  
Man Amanat ◽  
Mansoureh Togha ◽  
Elmira Agah ◽  
Mahtab Ramezani ◽  
Ali Reza Tavasoli ◽  
...  
Keyword(s):  
Placebo Group ◽  
Adverse Effects ◽  
Confidence Interval ◽  
Children And Adolescents ◽  
Sodium Valproate ◽  
Medical Center ◽  
Controlled Trial ◽  
Migraine Prophylaxis ◽  
Double Blind ◽  
Double Blind Placebo

Background Few migraine preventive agents have been assessed in a pediatric population. We evaluated the safety and efficacy of cinnarizine and sodium valproate for migraine prophylaxis in children and adolescents. Methods We carried out a randomized double-blind placebo-controlled trial in the Children’s Medical Center and Sina hospital, Tehran, Iran. Eligible participants were randomly assigned in 1:1:1 ratio via interactive web response system to receive either cinnarizine, sodium valproate, or placebo. The primary endpoints were the mean change in frequency and intensity of migraine attacks from baseline to the last 4 weeks of trial. The secondary endpoint was the efficacy of each drug in the prevention of migraine. The drug was considered effective if it decreased migraine frequency by more than 50% in the double-blind phase compared with the baseline. Safety endpoint was adverse effects that were reported by children or their parents. Results A total of 158 children participated. The frequency of migraine attacks significantly reduced compared to baseline in cinnarizine (difference: −8.0; 95% confidence interval (CI): −9.3 to −6.6), sodium valproate (difference: −8.3; 95% confidence interval: −9.3 to −7.2), and placebo (difference: −4.4; 95% confidence interval: −5.4 to −3.4) arms. The decrease was statistically greater in cinnarizine (difference: −3.6; 95% confidence interval: −5.5 to −1.6) and sodium valproate (difference: −3.9; 95% confidence interval: −5.8 to −1.9) arms, compared to placebo group. Children in all groups had significant reduction in intensity of episodes compared to baseline (cinnarizine: −4.6; 95% confidence interval: −5.2 to −4.0; sodium valproate: −4.0; 95% confidence interval: −4.8 to −3.3; placebo: −2.6; 95% confidence interval: −3.4 to −1.8). The decrease was statistically greater in cinnarizine (difference: −2.0; 95% confidence interval: −3.2 to −0.8) and sodium valproate (difference: −1.5; 95% confidence interval: −2.7 to −0.3) arms, compared to the placebo group. Seventy-one percent of individuals in the cinnarizine group, 66% of cases in the sodium valproate group, and 42% of people in the placebo arm reported more than 50% reduction in episodes at the end of the trial. The odds ratio for >50% responder rate was 3.5 (98.3% confidence interval: 1.3 to 9.3) for cinnarizine versus placebo and 2.7 (98.3% confidence interval: 1.0 to 6.9) for sodium valproate versus placebo. Nine individuals reported adverse effects (three in cinnarizine, five in sodium valproate, and one in the placebo group) and one case in the sodium valproate group discontinued the therapy due to severe sedation. Conclusion Cinnarizine and sodium valproate could be useful in migraine prophylaxis in children and adolescents. Trial registration: IRCT201206306907N4.

scholarly journals Exposure-Response Analyses of Tigecycline Efficacy in Patients with Complicated Skin and Skin-Structure Infections

2007 ◽  
Vol 51 (6) ◽  
pp. 1939-1945 ◽  
Author(s):  
A. K. Meagher ◽  
J. A. Passarell ◽  
B. B. Cirincione ◽  
S. A. Van Wart ◽  
K. Liolios ◽  
...  
Keyword(s):  
Sample Size ◽  
Regression Tree ◽  
Classification And Regression Tree ◽  
Loading Dose ◽  
Time Curve ◽  
Skin Structure ◽  
Exposure Response ◽  
Concentration Time ◽  
Complicated Skin ◽  
Clinical Responses

ABSTRACT Exposure-response analyses were performed for the microbiological and clinical efficacy of tigecycline in the treatment of complicated skin and skin-structure infections, where Staphylococcus aureus and streptococci are the predominant pathogens. A prospective method was developed to create homogeneous patient populations for PK-PD analyses. Evaluable patients from three clinical trials were pooled for analysis. Patients received a tigecycline 100-mg loading dose/50 mg every 12 h or a 50-mg loading dose/25 mg every 12 h. At the test-of-cure visit, microbiologic and clinical responses were evaluated. Patients were prospectively evaluated and classified into cohorts based on baseline pathogens: S. aureus only (cohort 1), monomicrobial S. aureus or streptococci (cohort 2), two gram-positive pathogens (cohort 3), polymicrobial (cohort 4), or other monomicrobial infections (cohort 5). A prospective procedure for combining cohorts was used to increase the sample size. Logistic regression evaluated steady-state 24-h area under the concentration-time curve (AUC24)/MIC ratio as a predictor of response, and classification and regression tree (CART) analyses were utilized to determine AUC/MIC breakpoints. Analysis began with pooled cohorts 2 and 3, the focus of these analyses, and included 35 patients with 40 S. aureus and/or streptococcal pathogens. CART analyses identified a significant AUC/MIC breakpoint of 17.9 (P = 0.0001 for microbiological response and P = 0.0376 for clinical response). The continuous AUC/MIC ratio was predictive of microbiological response based on sample size (P = 0.0563). Analysis of all pathogens combined decreased the ability to detect exposure-response relationships. The prospective approach of creating homogeneous populations based on S. aureus and streptococci pathogens was critical for identifying exposure-response relationships.

Epidemiology and Outcomes of Hospitalizations with Complicated Skin and Skin-Structure Infections: Implications of Healthcare-Associated Infection Risk Factors

2009 ◽  
Vol 30 (12) ◽  
pp. 1203-1210 ◽  
Author(s):  
Marya D. Zilberberg ◽  
Andrew F. Shorr ◽  
Scott T. Micek ◽  
Alex P. Hoban ◽  
Victor Pham ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Odds Ratio ◽  
Length Of Hospital Stay ◽  
Mixed Infections ◽  
Gram Negative ◽  
Skin Structure ◽  
Inappropriate Treatment ◽  
Complicated Skin ◽  
Gram Negative Organisms ◽  
Healthcare Associated

Objective.Healthcare-associated infections are likely to be caused by drug-resistant and possibly mixed organisms and to be treated with inappropriate antibiotics. Because prompt appropriate treatment is associated with better outcomes, we studied the epidemiology of healthcare-associated complicated skin and skin-structure infections (cSSSIs).Patients.Persons hospitalized with cSSSI and a positive culture result.Methods.We conducted a single-center retrospective cohort study from April 2006 through December 2007. We differentiated healthcare-associated from community-acquired cSSSIs by at least 1 of the following risk factors: (1) recent hospitalization, (2) recent antibiotics, (3) hemodialysis, and (4) transfer from a nursing home. Inappropriate treatment was defined as no antimicrobial therapy with activity against the offending pathogen(s) within 24 hours after collection of a culture specimen. Mixed infections were those caused by both a gram-positive and a gram-negative organism.Results.Among 717 hospitalized patients with cSSSI, 527 (73.5%) had healthcare-associated cSSSI. Gram-negative organisms were more common (relative risk, 1.24 [95% confidence interval, 1.14–1.35) and inappropriate treatment trended toward being more common (odds ratio, 1.29 [95% confidence interval, 0.85–1.95]) in healthcare-associated cSSSI than in community-acquired cSSSI. Mixed cSSSIs occurred in 10.6% of patients with healthcare-associated cSSSI and 6.3% of those with community-acquired cSSSI (P = .082) and were more likely to be treated inappropriately than to be nonmixed infections (odds ratio, 2.42 [95% confidence interval, 1.43–4.10]). Both median length of hospital stay (6.2 vs 2.9 days; P < .001) and mortality rate (6.6% vs 1.1%; P = .003) were significantly higher for healthcare-associated cSSSI than community-acquired cSSSI.Conclusions.Healthcare-associated cSSSIs are common and are likely to be caused by gram-negative organisms. Mixed infections carry a <2-fold greater risk of inappropriate treatment. Healthcare-associated cSSSIs are associated with increased mortality and prolonged length of hospital stay, compared with community-acquired cSSSIs.

Preliminary results of RTOG 0831, a randomized, double-blinded, placebo-controlled trial of tadalafil in the prevention of erectile dysfunction in patients treated with radiotherapy for prostate cancer.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 9525-9525
Author(s):  
Deborah Bruner ◽  
Stephanie L. Pugh ◽  
Thomas Michael Pisansky ◽  
Richard Evan Greenberg ◽  
Nadeem Pervez ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Erectile Function ◽  
Controlled Trial ◽  
First Year ◽  
Additional Time ◽  
Double Blind ◽  
Exact Test ◽  
Intent To Treat ◽  
Double Blinded ◽  
Penile Bulb

9525 Background: Determine if prophylactic tadalafil maintains spontaneous (off-drug) erectile function (EF) compared to placebo in patients (pts) treated with radiotherapy (RT) for prostate cancer. Methods: Double-blind 1:1 randomization to tadalafil 5mg daily for 6 mos vs placebo starting with RT. Primary outcomes measured by International Index of Erectile Function (IIEF). Eligibility included pre-RT IIEF Question [Q] 1 response “sometimes/most times/always” able to get an erection. Ps treated with hormones were excluded. Primary outcome was response to IIEF Q1 at 30 wks (6 wks off drug). Pts were stratified by RT modality (external vs. brachytherapy) and age (≤65 vs. >65 years). 182 pts were needed in an intent-to-treat analysis to show a difference from 20% responders with placebo to 40% with tadalafil based on a 2-sided Fishers exact test with α=0.05 and 80% power. Results: We report on 155/222 analyzable/eligible pts. Median age was 63 years, white (73%), and external RT (63%). Mean total dose for external RT was 77.23 Gy and 136.74 Gy for brachytherapy with penile bulb D50 of 24.46 Gy and 31.24 Gy respectively. Most pts completed treatment per protocol (84% tadalafil, 70% placebo). Spontaneous EF at 30 wks from drug start was not different (p=0.99) between arms based on IIEF Q1 response, total IIEF score (52.5 drug vs 52.8 placebo), or score change from baseline (-8.0 drug vs -8.8 placebo). No difference in these outcomes was noted at 1 year. Non-responders at 30 wks were likely to be older (age≥65; p=0.432), but there were no significant predictors at 1 year. About 80% of pts maintained spontaneous EF in both arms. Conclusions: Low-dose daily tadalafil did not preserve EF within the first year of RT for prostate cancer. If tadalafil positively influences delayed RT-induced vasogenic injury, additional time may be needed to observe a benefit to tadalafil as a preventive agent. Alternatively, tadalafil dose modification or altered dosing schedules may be needed to demonstrate a protective effect of this agent when used with RT. Clinical trial information: NCT00951184.

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