Abstract:
:Lack of adherence to study protocol and missing data are often unavoidable in clinical trials, and both increase the need to differentiate between the ideal treatment effect if the medication is taken as directed and the treatment effect in presence of the actual adherence pattern. In this regard, estimands have become the focus of attention. An estimand is simply that which is being estimated. In the context of treatment benefit, an estimand may address either efficacy or effectiveness aspects. Defining the estimand of interest is an essential step to take before deciding on trial design and primary analysis. The choice of estimand has consequences for various other factors to be considered during any clinical trial's planning phase. This study presents a process chart including all aspects to consider during planning. After deciding on the primary estimand, the trial design should be specified, followed by the primary analysis. Both should appropriately address the chosen estimand. Finally, sensitivity analyses should be taken into account. Provided are suggestions for all the planning steps involved, especially on choosing between efficacy and effectiveness, and relevant examples from clinical practice to illustrate them. It is recommended that one bear in mind the process chart during planning of any clinical trial and give reasonable justification for each decision in the study protocol.
journal_name
Ther Innov Regul Scijournal_title
Therapeutic innovation & regulatory scienceauthors
Leuchs AK,Zinserling J,Brandt A,Wirtz D,Benda Ndoi
10.1177/2168479014567317subject
Has Abstractpub_date
2015-07-01 00:00:00pages
584-592issue
4eissn
2168-4790issn
2168-4804journal_volume
49pub_type
杂志文章abstract::Source data verification (SDV) is the process of confirming that reliable, accurate information collected from participants during a clinical trial has been reported successfully to the trial's sponsor by investigators conducting the study. Over the past 15 years or so, there has been considerable discussion in the li...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479013496245
更新日期:2014-03-01 00:00:00
abstract::The regulatory agencies all over the world have defined the pathway and regulations for the approval of simple small-molecule generics. In addition, the agencies are striving to form perspicuous regulatory frameworks for the approval of biosimilars. In this view, there are no defined regulations for the approval of co...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章,评审
doi:10.1007/s43441-020-00114-6
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND:(1) A growing number of pharmaceutical and biotechnology organizations are engaging patients, their support networks, and clinical trial site staff at various touchpoints along the clinical research development spectrum to solicit feedback on how to reduce the burden of clinical trial participation and admin...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479019849875
更新日期:2019-05-22 00:00:00
abstract:BACKGROUND:The influence of patient advocates on FDA regulatory decision making has increased. Despite enhanced engagement with FDA, there remain challenges to achieving the regulatory goals of patients within FDA's regulatory framework. Gaps exist between patient advocates' knowledge of the agency's processes and FDA'...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479017753390
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Self-management can be considered a way of dealing with oneself and relates to actions undertaken to create order, discipline, and control. The concept is closely linked to concepts of self-efficacy and self-regulation but can be distinguished from these. The Self-Management Self-Test (SMST) is a 5-item asse...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479019849879
更新日期:2019-07-14 00:00:00
abstract::Time progression models provide a significant advantage in developing clinical trials and can also be used to elicit comparisons among therapeutic agents. The authors performed a meta-analysis to construct a time progression model for rheumatoid arthritis (RA), an area of significant interest for pharmaceutical develo...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479013499571
更新日期:2013-11-01 00:00:00
abstract:BACKGROUND:Although a large number of clinical trials have been conducted, the types of clinical trials that are scientifically influential, frequently utilized by society, and contribute to the progress of evidence-based medicine (EBM) have not been studied. Thus, we aimed to investigate the relationship between the c...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-020-00177-5
更新日期:2020-11-01 00:00:00
abstract:OBJECTIVE:To identify, evaluate, and characterize the variety, quality, and intent of the health economics and outcomes research studies being conducted in SAARC (South Asian Association for Regional Cooperation) nations. METHODS:Studies published in English language between 1990 and 2015 were retrieved from Medline d...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章,评审
doi:10.1177/2168479017731583
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:With the pharmaceutical industry's increased attention on enhancing patient experiences during their participation in clinical trials, the use of mobile nurse (MN) services to support the conduct of clinical trial assessments in the home (or in alternative locations other than in investigational sites) has b...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479015625712
更新日期:2016-07-01 00:00:00
abstract::The Food and Drug Administration Amendments Act of 2007 gave the FDA the authority to require drug sponsors to submit a risk evaluation and mitigation strategies (REMS) program for those medicines with serious risks such that failure to effectively manage these risks would tip the benefit-risk balance. As of August 8,...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479014527749
更新日期:2014-11-01 00:00:00
abstract::Data quality is critical for clinical trials to obtain robust conclusions about drug safety and efficacy evaluation. Effective data quality evaluation has been one of the major obstacles to new drug approvals in China, which hinders innovation in drug discovery and development ultimately. To improve the data quality s...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479018778528
更新日期:2019-03-01 00:00:00
abstract::There is a long history of discussions about what is a minimal clinically important difference (MCID) and how this term applies to clinical research. This paper deals with a practical framework for MCID and its applicability to clinical trials. A literature review on the topic confirmed the fundamental role of MCID fo...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479013487541
更新日期:2013-07-01 00:00:00
abstract::A growing number of organizations-including pharmaceutical and biotechnology companies, foundations and associations-are routinely implementing patient advisory boards (PAB) given their high reported value for minimal relative investment. Organizations are typically implementing PABs to solicit patient voices and pers...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479017720475
更新日期:2018-07-01 00:00:00
abstract::Agents indicated for cleansing of the colon as a preparation for colonoscopy (bowel preps) are among the most frequently prescribed drugs for otherwise healthy patients. Better bowel preparation has been shown to translate into higher adenoma detection rates. Therefore, safety and efficacy standards need to be high. C...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479015577868
更新日期:2015-09-01 00:00:00
abstract::Attention deficit hyperactivity disorder (ADHD) is the most common neurobiological disorder in children, with a prevalence of ~6-7%1,2 that has remained stable for decades2. The social and economic burden associated with patients3, families, and broader systems (healthcare/educational) is substantial, with the annual ...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479015599811
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:Predictions of drug sales play an important role in setting drug prices in Japan, where drug prices are highly regulated. One of 2 primary Japanese drug-pricing methodologies-the cost calculation method- refers extensively to the prediction of drug sales in establishing drug prices. Deviations from predicted...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479019860123
更新日期:2019-07-16 00:00:00
abstract::In the current pharmaceutical regulatory environment, patients continue to benefit from great advances in medical care. Sophisticated regulatory review systems have also evolved to ensure that safe and effective medicines are approved. However, these systems are not optimized in all countries. Gaps in individual regul...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-019-00055-9
更新日期:2020-03-01 00:00:00
abstract:BACKGROUND:Safety data are continuously evaluated throughout the life cycle of a medical product to accurately assess and characterize the risks associated with the product. The knowledge about a medical product's safety profile continually evolves as safety data accumulate. METHODS:This paper discusses data sources a...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章,评审
doi:10.1177/2168479017741112
更新日期:2018-03-01 00:00:00
abstract:BACKGROUND:The number of original and supplemental ANDAs, BLAs, NDAs, and Biosimilars FDA drug/biologic approvals (Approvals) has risen dramatically in the recent years, incidentally, so has the number of issued FDA guidances (Guidances). It is hypothesized that if the structures of the two timeseries are similar and/o...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-020-00123-5
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND:The design and sample size of a phase III study for new medical technologies were historically determined within the framework of frequentist hypothesis testing. Recently, drug development using predictive biomarkers, which can predict efficacy based on the status of biomarkers, has attracted attention, and ...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-020-00119-1
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND:Package leaflets of medicines distributed within the European Union should use the template headings and standard texts created by the Working Group on the Quality Review of Documents (QRD). The following study investigated how the QRD template is implemented in this patient information. METHODS:All English...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479015620247
更新日期:2016-01-01 00:00:00
abstract::Much has changed in a relatively short period of time. There is a raging debate over the level of evidence expected to first introduce a treatment to patients based on smaller, more adaptive data sets. Some argue for less data followed by postapproval follow-up, others for more adaptive clinical trial designs and end-...
journal_title:Therapeutic innovation & regulatory science
pub_type: 社论
doi:10.1177/2168479018766887
更新日期:2018-07-01 00:00:00
abstract::Probability of success in phase II dominates the drug development cost calculus, with phase I/II as the critical juncture for proof of concept. Failure to address fundamental pharmacologic questions in early development is alarmingly frequent and a strong predictor of failure. Safety, manufacture, formulation, and com...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479014526600
更新日期:2014-09-01 00:00:00
abstract::TransCelerate BioPharma Inc developed a methodology based on the notion that shifting monitoring processes from an excessive concentration on source data verification to comprehensive risk-driven monitoring will increase efficiencies and enhance patient safety and data integrity while maintaining adherence to good cli...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479014546336
更新日期:2014-09-01 00:00:00
abstract::The volume and diversity of data collected to support each clinical study has increased dramatically in response to the rising scope and complexity of global drug development programs. The Tufts Center for the Study of Drug Development conducted an online survey of 257 unique global companies-77% drug development spon...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479018769292
更新日期:2019-01-01 00:00:00
abstract::The DIA Study Endpoints Community Working Group on Mobile Sensor Technology (MST) series addresses considerations that may be useful for selecting MST for use in a clinical trial. This article describes considerations regarding the selection of MST for clinical trials including expectations around technology specifica...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-020-00188-2
更新日期:2021-01-01 00:00:00
abstract::When does a single positive adequate and well-controlled study of a new drug meet the statutory requirement to demonstrate substantial evidence of effectiveness? The answer to this question, particularly with respect to new molecular entities, has been of considerable debate since 1962 when the requirement that new dr...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-019-00103-4
更新日期:2020-05-01 00:00:00
abstract:BACKGROUND:Several articles showed that statistical efficiency of multi-arm randomized clinical trials (RCTs) is much better than conventional two-arm RCTs. Multi-arm RCTs attract interest mainly when the experimental treatment regimen is not optimized or several pipelines under development exist. Breast cancer is a po...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-020-00141-3
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND:The pace of innovation, the creative engine of the pharmaceutical industry, has been variably described as stagnant, stable, or accelerating depending on the metric used for assessment or the quality of evidence. If the predominant perception holds that the speed of innovation is sluggish, pressure for chang...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1007/s43441-020-00210-7
更新日期:2020-08-31 00:00:00
abstract::The QT interval is correlated with heart rate; therefore, the QT interval is usually corrected by heart rate when drug-induced QT effect is studied. Currently, there are many correction methods that use either fixed or data-driven approaches. The effectiveness of correction methods depends on many factors and varies f...
journal_title:Therapeutic innovation & regulatory science
pub_type: 杂志文章
doi:10.1177/2168479012467018
更新日期:2013-03-01 00:00:00