This paper builds on previous work that investigated anticancer drugs as ‘informed materials’, i.e., substances that undergo an informational enrichment that situates them in a dense relational web of qualifications and measurements generated by clinical experiments and clinical trials. The paper analyzes the recent transformation of anticancer drugs from ‘informed’ to ‘informing material’. Briefly put: in the post-genomic era, anti-cancer drugs have become instruments for the production of new biological, pathological, and therapeutic insights into the underlying etiology and evolution (...) of cancer. Genomic platforms characterize individual patients’ tumors based on their mutational landscapes. As part of this new approach, drugs targeting specific mutations transcend informational enrichment to become tools for informing their targets, while also problematizing the very notion of a ‘target’. In other words, they have become tools for the exploration of cancer pathways and mechanisms. While several studies in the philosophy and history of biomedicine have called attention to the heuristic relevance and experimental use of drugs, few have investigated concrete instances of this role of drugs in clinical research. (shrink)

Randomized controlled clinical trials play an important role in the development of new medical therapies. There is, however, an ethical issue surrounding the use of randomized treatment allocation when the patient is suffering from a life threatening condition and requires immediate treatment. Such patients can only benefit from the treatment they actually receive and not from the alternative therapy, even if it ultimately proves to be superior. We discuss a novel new way to analyse data from such clinical (...) class='Hi'>trials based on the use of the recently developed theory of imprecise probabilities. This work draws an explicit distinction between the related but nevertheless distinct questions of inference and decision in clinical trials. The traditional question of scientific interest asks 'Which treatment offers the greater chance of success?' and is the primary reason for conducting the clinical trial. The question of decision concerns the welfare of the patients in the clinical trial, asking whether the accumulated evidence favours one treatment over the other to such an extent that the next patient should decline randomization and instead express a preference for one treatment. Consideration of the decision question within the framework of imprecise probabilities leads to a mathematical definition of equipoise and a method for governing the randomization protocol of a clinical trial. This paper describes in detail the protocol for the conduct of clinical trials based on this new method of analysis, which is illustrated in a retrospective analysis of data from a clinical trial comparing the anti-emetic drugs ondansetron and droperidol in the treatment of postoperative nausea and vomiting. The proposed methodology is compared quantitatively using computer simulation studies with conventional clinical trial designs and is shown to maintain high statistical power with reduced sample sizes, at the expense of a high type I error rate that we argue is irrelevant in some specific circumstances. Particular emphasis is placed on describing the type of medical conditions and treatment comparisons where the new methodology is expected to provide the greatest benefit. (shrink)

Alzheimer's disease is characterized by formation of neuritic plaque primarily composed of a small filamentous protein called amyloid-beta peptide . The rate-limiting step in the production of Abeta is the processing of Abeta precursor protein by beta-site APP-cleaving enzyme . Hence, BACE1 activity plausibly plays a rate-limiting role in the generation of potentially toxic Abeta within brain and the development of AD, thereby making it an interesting drug target. A phase II trial of the promising LY2886721 inhibitor of BACE1 (...) was suspended in June 2013 by Eli Lilly and Co., due to possible liver toxicity. This outcome was apparently a surprise to the study's team, particularly since BACE1 knockout mice and mice treated with the drug did not show such liver toxicity. Lilly proposed that the problem was not due to LY2886721 anti-BACE1 activity. We offer an alternative hypothesis, whereby anti-BACE1 activity may induce apparent hepatotoxicity through inhibiting BACE1's processing of beta-galactoside alpha-2,6-sialyltransferase I . In knockout mice, paralogues, such as BACE2 or cathepsin D, could partially compensate. Furthermore, the short duration of animal studies and short lifespan of study animals could mask effects that would require several decades to accumulate in humans. Inhibition of hepatic BACE1 activity in middle-aged humans would produce effects not detectable in mice. We present a testable model to explain the off-target effects of LY2886721 and highlight more broadly that so-called off-target drug effects might actually represent off-site effects that are not necessarily off-target. Consideration of this concept in forthcoming drug design, screening, and testing programs may prevent such failures in the future. (shrink)

Surgical castration of sex offenders has been used in several countries to prevent sexual recidivism and is still practiced in several states in the United States. In Europe, it has remained in limited use in Germany and in the Czech Republic (Douglas et al. 2013). Since the 1960s, most jurisdictions have replaced irreversible surgical castration of sex offenders with reversible chemical castration with anti-androgen drugs. In Denmark, use of surgical castration was stopped in 1970, and since the late 1980s, serious (...) sex offenders have on a trial basis been treated with anti-androgen drugs (Hansen and Lykke-Olesen 1997). In 1997, an official treatment program for sex offenders was introduced on a trial basis, and in 2011 this scheme was made permanent (Nielsen 2001).The first part of the scheme covers persons with a suspended sentence with conditions of sexological treatment. This program serves as an alternative to suspended sentences of up to one and a half years of prison for crimina. (shrink)

Angiogenesis plays an essential role in tumor growth, invasion and metastasis. After initial pessimism about the usefulness of the antiangiogenic therapeutic approach for cancer, interest has increased in the development of antiangiogenic compounds after the first clinical approval of an antiangiogenic therapy. The anti‐vascular endothelial growth factor (VEGF) antibody bevacizumab has recently been approved for use in combination with chemotherapy for the treatment of metastatic colorectal and non‐small cell lung cancer patients. However, no survival benefit has been demonstrated in anti‐VEGF (...) monotherapy trials, probably due to the high complexity of tumor angiogenesis regulation. Experimental and clinical data, including the approval of the multitargeted drugs sunitinib and sorafenib, indicate that exciting results, including tumor regression, can be expected from the combined targeting of different pathways in the tumor angiogenesis scenario. Several obstacles, including the high cost of new molecular targeted drugs make this therapeutic approach difficult. BioEssays 29:1159–1168, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

The new class of anti-inflammatory drugs, the COX-2 inhibitors, have been commercially successful to the point of market dominance within a short time of their launch. They attract a price premium on the basis that they are associated with fewer adverse gastric events than traditional anti-inflammatory drugs. This marketing continues even though a pivotal safety study with one of the COX-2 inhibitors, rofecoxib, showed a significant increase in myocardial infarction with rofecoxib use compared with a traditional anti-inflammatory drug. This (...) finding has led to a series of publications containing pooled analyses of existing data that both support and refute the possibility of increased cardiovascular risk with COX-2 inhibitors.These medical journal publications have served to obfuscate rather than provide guidance for medical practitioners. Consideration of a research ethics committee approach to this issue suggests that it would deal with the controversy in a straightforward manner—namely, it would simply inform research participants of the trial results with rofecoxib. The certainty of this research ethics committee approach raises the issue of whether it should be applied in normal medical practice outside of the research environment. A consideration of the legal tests for disclosure of information suggests that therapeutic medical practice should mirror that within the research environment, in this case. (shrink)

Submission of study protocols to research ethics committees constitutes one of the earliest stages at which planned trials are documented in detail. Previous studies have investigated the amendments requested from researchers by RECs, but the type of issues raised during REC review have not been compared by sponsor type. The objective of this study was to identify recurring shortcomings in protocols of drug trials based on REC comments and to assess whether these were more common among industry-sponsored (...) or non-industry trials. (shrink)

Assume this hypothetical situation: an American pharmaceutical company, Maxwell Fisch Pharmaceuticals, Inc., wishes to perform clinical trials involving a new antipsychotic medication, Klezac. Klezac is in its third phase of the clinical stage of the drug research process. Once the testing is complete, Maxwell plans to submit a New Drug Application, the official request to begin marketing Klezac, to the Food and Drug Administration. The new drug is expected to receive FDA approval in 2 or (...) more years. The company decides to shift its research and development activities to Z, a small, developing country. In doing so, Maxwell is following the course taken by numerous other drug companies who wish to take advantage of faster governmental approval in foreign sites and ensuing cheaper research costs. (shrink)

Over the past decade, the management of clinical trials of pharmaceuticals has become a veritable industry, as evidenced by the emergence and proliferation of contract research organizations (CROs) that co‐ordinate and monitor trials. This article focuses on work performed by one CRO involved in the introduction of new software, modelled on industrial production processes, into clinical trial practices. It investigates how this new management technique relates to the work performed in the clinic to ensure that trial participants comply (...) with the protocol. Using an analytical distinction between ‘classical’ management work and invisible work, the article contextualizes the meaning of compliance in the clinic and suggests that the work involved in producing compliance should be taken into consideration by those concerned with validity of trials, as clinical trials are put under private industrial management. The article builds on participant observation at a Swedish university hospital and interviews the nurses, dieticians, doctors and a software engineer, all part of a team involved in pharmaceutical drug trials on a potential obesity drug. (shrink)

The concept of moralisation of health behaviours was introduced in social psychology to describe the attribution of moral properties to habits and conditions like smoking or being a vegetarian. Moral properties are powerful motivators for people and institutions, as they may trigger blame, stigma, and appraisal, as well as the polarisation of interest and scientific hype. Here I extend the concept and illustrate how medicines and treatments can be seen as if they had moral properties, too, when they come to (...) be regarded as good or bad in the moral sense, and not just in the instrumental sense of benefiting or harming health. I propose the hydroxychloroquine (HCQ) controversy of 2020 as an example of moralisation of a medicine. HCQ and chloroquine are anti-malarial drugs, whose off-label use for Covid-19 was hotly discussed in the early months of the pandemic, both in the media and within the scientific community, and eventually dismissed when robust evidence came out. The point of the paper is to show that moralisation of health products and treatments may influence individual and institutional decisions in significant ways, and also affect research. For these reasons, it should be carefully monitored and critically assessed. (shrink)

The facilitation of tight regulatory frameworks necessary to ensure that new drugs are safe and effective have yet to be effectively applied within the paediatric population. Utilization of unlicensed and off-label drugs in children results in a variety of problems ranging from inefficacy, adverse reactions and in some cases death. This ethically questionable behaviour has led the European government to legally force pharmaceutical companies to propose paediatric applications and carry out clinical studies at early stages of drug development. The (...) new European Paediatric Regulation implemented in 2007 opens a new era of paediatric drug development and will offer the opportunity to vastly improve children's health. However, this brighter outlook for the paediatric community might encourage potentially unethical behaviour in a pharmaceutical industry that finds itself in economically unstable times. The article records the gradual evolution of the US Paediatric Exclusivity Plan and the underlying principle of the newly introduced European Paediatric Regulation. It discusses some of the potential drawbacks and detrimental consequences of implementing the new European regulation, and the prospects of avoiding these by critically evaluating the difficulties experienced by the US. (shrink)

BackgroundThis study aimed to determine the elements and the extent of information that child participants and their parents would like to read in an informed assent form /informed consent form of a pediatric drug trial.MethodsA descriptive survey was conducted to determine the perceived importance of each element of the ICF content from child participants and their parents who underwent informed assent/consent of a multi-center pediatric drug trial. The respondents were asked to indicate the level of importance of each (...) item in a questionnaire, by giving a rating scale from 1 to 5.ResultsA total of 22 families, 17 child participants with the diagnosis of hematology or oncology diseases and 27 parents, were enrolled. Among 30 items, risk–benefit aspects were perceived to be of most concerning items from both child participants’ and parents’ viewpoint. None of the items were considered ‘slightly important’ or lower by more than 20% of the respondents.ConclusionsFor pediatric drug trials, risk–benefit information should be made a salient feature of an IAF/icf. This empirical data could help related stakeholders arrange essential information in order of importance and tailor an IAF/icf to better suit child participants’ and parents’ needs, particularly for pediatric drug trials involving children with the diagnosis of hematology or oncology diseases. (shrink)

Volume 20, Issue 4, May 2020, Page 102-103.

The issue of aftercare for participants in clinical research was explored in the context of an asthma drug trial. Although there may be financial constraints and practical difficulties with implementation, the results show that it may be feasible for clinical investigators and commercial sponsors to take on some limited responsibility for the medical care of research subjects after clinical trials. However, the ethical implications for this practice remain unclear. On the one hand, society may have a moral obligation (...) to compensate and reward some of its members who assume the risk of research subjects for the benefit of society as a whole. On the other hand, the promise of aftercare may provide an inducement to volunteers which, under certain conditions may be considered morally wrong and scientifically unsound. (shrink)

Within the world of pharmacology, the male body has traditionally been taken as the biological norm. Coupled with this, concern about danger to the unborn foetus has meant that, until very recently, ‘women of childbearing potential’ were routinely excluded from most of the early phases of clinical drug testing. Consequently, most drugs tested during Phase I trials were initially carried out on healthy male volunteers. During subsequent phases when drugs were tested on patients, women remained largely under-represented. As (...) a result, some drugs prescribed for women have later been discovered to be lacking in efficacy, and women are more likely to suffer adverse drug reactions than men. The exclusion of women during the early phases of clinical drug trials has now been lifted and drugs are currently being more widely tested on women. This paper examines the differing political and ethical positions adopted by the pharmaceutical industry, drug regulators, pharmacologists, women's groups and patient activists in relation to the exclusion and inclusion of women in clinical drug trials. (shrink)

A major problem in the treatment of cancer is the specific targeting of anti‐tumor drugs to these abnormal cells. Ideally, such a drug should act over short distances to minimize damage to healthy cells, and target subcellular compartments that have the highest sensitivity to the drug. Photosensitizers, alpha‐emitting radionuclides and many other medicines could be considered as such drugs if they possessed cellular and subcellular specificity. The author describes a novel approach of using modular recombinant transporters to target (...) photosensitizers and alpha‐emitting radionuclides to the nucleus, where their action is most pronounced, of cancer cells. Photosensitizer‐transporter conjugates have up to 3000 times greater efficacy than free photosensitizers and display cell specificity in contrast to free photosensitizers. Alpha‐emitting radionuclides, conjugated with the modular transporters, acquired similar properties. The different modules of the transporters are interchangeable, meaning that they can be tailored for particular applications. BioEssays 30:278–287, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

Mutations in DNA topoisomerase II are often correlated with drug‐resistance in tumor cell lines. Studies of topoisomerase II‐mediated drug‐resistance in various model systems, as well as the sequencing of such mutations from drug‐resistant tumors, have shed light on the functional domains of topoisomerase II, on how it interacts with inhibitors, and on the different mechanisms by which cells avoid the toxic effects of many clinically important anti‐tumor drugs.

There is a gap in evidence regarding how research trial closure processes are managed to ensure continuity of HIV care for HIV positive participants following trial closure within low income settin...

Before sailing past the sirens' “flowery meadow,” Ulysses instructed his sailors to lash him to the mast so that he would not succumb to the siren's singing. His advance directive demonstrated that he valued his dispositional or long-term autonomy over his unquestioned right to make decisions. He also indicated to his oarsmen that he understood the nature of temptation and his inability to resist it. Ideas of autonomy and sexual choice are central to this discussion of new AIDS treatments, especially (...) the trials of preventative vaccines. Questions arise over the rights of individuals and the extent that these should be limited by concerns of the gay community. Should the gay community intervene in the risky decisions of individuals if no explicit advance directive exists? If so, how do they justify their paternalism? Could their aims not be better served through strengthening the individual dispositional autonomy of trial participants rather than making specific claims about the common good? (shrink)

After the US Supreme Court’s reversal of Roe v. Wade, a number of states have immediately banned abortion. Pro-choice activists are responding by promoting medication abortions – a do-it-yourself form of abortion. Women can take pills at home to induce an abortion in the first few weeks of pregnancy. -/- The Biden Administration [1] has backed the abortion pill, too. Attorney-General Merrick B. Garland and Health and Human Services Secretary Xavier Becerra both issued statements endorsing it. -/- “We stand ready (...) to work with other arms of the federal government that seek to use their lawful authorities to protect and preserve access to reproductive care,” said the Attorney-General. “In particular, the F.D.A. has approved the use of the medication mifepristone. States may not ban mifepristone based on disagreement with the F.D.A.’s expert judgment about its safety and efficacy.” -/- As the New York Times [1] has noted, this sets the scene for legal battles. The obvious one is: will anti-abortion states prosecute medication abortions? -/- But – based on experience in the United Kingdom - the use of the abortion pill could give pro-life doctors headaches as well. -/- In the past year, UK has witnessed the saga of two Catholic doctors who have been brought in front of the professional regulator, the General Medical Council, after accusations of professional misconduct. Their crime? They had supplied abortion pill reversal (APR) treatment to women. Accusations of this misconduct have been brought forward by pro-choice organisations [2]. -/- The problem is that some women might panic when they discover that they are pregnant or are pressured to make a rash decision. They obtain abortion pills, often without seeing a doctor faceto- face, and soon after taking the first pill, they regret their decision. -/- Is it too late for them to save their pregnancy? Not necessarily. -/- A treatment developed in the US works about half the time. It involves the woman taking progesterone after the first abortion pill to counteract the abortifacient action of the drug. -/- Seventy-three women in the UK are reported to have taken a full APR course, of whom, 38 – more than half — successfully remained pregnant. Admittedly, the procedure is controversial [3], with pro-choice writers denouncing it as unproven, unscientific, and unethical. This has triggered some healthcare practitioners and scholars to analyse the commitments of the pro-choice movement to APR. In a recently published paper in The New Bioethics [4], two colleagues, Dominic Whitehouse and Steven Bow, and I argue that those espousing a pro-choice worldview should actually support abortion pill reversal and that the current evidence indicates that they should actually be doing it. -/- While some pro-choice activists might be happy simply to expand women’s reproductive choices, some might also want to ensure that these choices are safe and effective at achieving the desired outcome, which in principle includes maintaining a pregnancy. -/- We then review the scientific evidence with respect to the ability of APR to halt an abortion, look at the potential impact of APR on mental health, as well as its procedural safety. While highlighting that gold-standard evidence is lacking, we note that APR is associated with about two times higher rate of embryo survival compared to not completing the full early medical abortion course, that there is large agreement in the literature that women who are ambiguous about abortion are at risk of poorer mental health outcomes after abortion (and argue that women who request APR fall into this category), and highlight that there is no evidence that APR is more dangerous than abandoning an initiated early medical abortion. -/- The latter fact is important, as the results of the only randomised-controlled trial of APR have been at times misrepresented in the media [5.6], creating the impression that APR is not safe while most of the adverse effects occurred in the study group that did not receive APR. As our paper argues, with respect to APR the two UK doctors were “champions of women’s choice and should be congratulated, not condemned, by pro-choice advocates”. -/- While the cases against the two doctors have now been dropped (and there have even been accusations against a member of one of these pro-choice organisations that they pressurised a patient into complaining about one of the doctors and twisted the patient’s experience of the treatment [7]), we argue that it is important to set-up systems to facilitate the future provision of APR to protect both patients and healthcare staff. -/- Our conclusion is that, while being open to any change in evidence, those espousing a pro-choice outlook should “support calls for an APR framework that will protect women and the healthcare professionals caring for them” “and certainly not oppose” APR. -/- The debate over abortion pill reversal will be heading to the United States soon. It is quite possible that it will be denounced as dangerous misinformation. It’s not. But pro-life defenders should be prepared to defend their ground. -/- This article was first published by Mercatornet. (shrink)

Interventions aiming to slow, stop, or reverse the aging process are starting to enter clinical trials. Though this line of research is nascent, it has the potential to not only prevent prolonged human suffering, but also to extend human well-being. As this line of research develops, it is important to understand the ethical constraints of conducting such research. This paper discusses some of these constraints. In particular, it discusses the ethical difficulties of conducting this research in a way that (...) would produce reliable data regarding the effectiveness of an anti-aging intervention. Clinical trials of such interventions, I argue, will be faced with a dilemma between two confounding variables. Eliminating the variables requires introducing ethically problematic research practices. Thus, researchers must either perform research in ethically problematic ways, or forego the conduct of high-impact clinical research on anti-aging interventions. (shrink)

Chloroquine-resistant plasmodium falciparum malaria is a serious public health threat that is spreading rapidly across Sub-Saharan Africa. It affects over three quarters (80%) of malarial endemic countries. Of the estimated 300-500 million cases of malaria reported annually, the vast majority of malarial-related morbidities occur among young children in Africa, especially those concentrated in the remote rural areas with inadequate access to appropriate health care services. In Liberia, in vivo studies conducted between 1993 and 2000 observed varying degrees of plasmodium falciparum (...) malaria infections that were resistant to chloroquine, including sulfadiazine-pyrimethamine. As the country emerges from a prolonged civil war, the health care delivery system may not be adequately prepared to implement an effective nation-wide malarial control strategy. As a result, the management of uncomplicated malaria in Liberia poses a significant public health challenge for the government-financed health care delivery system. Therefore, based on extensive literature review, we report the failure of chloroquine as an effective first-line drug for the treatment of uncomplicated plasmodium falciparum malaria in Liberia and recommend that national health efforts be directed at identifying alternative drug(s) to replace it. (shrink)

This book begins the discourse on post-trial access to drugs in developing countries. Underlying ethical issues in global health inequalities and global health research serve as the context of the debate. Due to rampant allegations of violations of rights of research participants, especially in developing countries, it discusses the regulatory infrastructure and ethical oversight of international clinical research, thus emphasizing the priority of safeguarding the rights of research participants and host populations as desiderata in conducting clinical trials in developing (...) countries. This is the first book that analyzes the major obstacles of affordable access to drugs in developing countries - patent and non-patent factors and how they can be overcome through a middle ground approach and a new paradigm to establish global health justice which includes national and global health responsibilities. The book also deals extensively with all complex aspects of the discourse on affordable access to drugs in developing countries, including intellectual property law, international regulations, political and cultural systems, international trade agreements. Furthermore it contains a robust ethical debate and in-depth analysis. The book crafts a paradigm of global health justice involving a sliding scale of national and global responsibilities for the realization of the right to health in general and access to drugs in particular. (shrink)

In the first part of this article, we considered how Thandi, a 15-year-old girl, was treated when taken by her mother to their GP, Dr Randera. Dr Randera notified them that Thandi was pregnant, HIV positive, and had syphilis and herpes. Dr Randera also informed them that there was a substantial risk that the baby would be born HIV positive. Both Thandi and her mother wanted an abortion. However, Dr Randera, who was morally opposed to abortions, refused to provide the (...) service and did not refer Thandi to another doctor who would perform the abortion.The saga continues:. (shrink)

Regulators rely on clinical trials for drug approval and labeling decisions. Health systems and clinicians rely on the evidence from trials to determine treatment, and patients rely on it to decide which courses of care to undertake. Many of these stakeholders presume that the careful review of individual studies is enough to address the ethical and scientific questions that arise in clinical trials. In what follows, however, we demonstrate that explicit consideration of trial portfolios—series of (...) class='Hi'>trials that are interrelated by a common set of objectives—is crucial. the ethical acceptability and evidentiary probity of individual trials can change depending on the characteristics of the portfolios in which they are embedded. Second, how trial portfolios are composed, how well they are coordinated, and how efficiently they use information determines the balance of risks and benefits they present as well as their different prospects for generating socially valuable information; these three factors also raise distinct questions of justice. (shrink)

Background : researchers and sponsors increasingly confront the issue of whether participants in a clinical trial should have post-trial access (PTA) to the trial drug. Legislation and guidelines are inconsistent, ambiguous or silent about many aspects of PTA. Recent research highlights the potential importance of systematic reviews (SRs) of reason-based literatures in informing decision-making in medicine, medical research and health policy. Purpose: to systematically review reasons why drug trial participants should, or need not be ensured PTA to the (...) trial drug and the uses of such reasons. Data sources: databases in science/medicine, law and ethics, thesis databases, bibliographies, research ethics books and included publications’ notes/bibliographies. Publication selection: a publication was included if it included a reason as above. See article for detailed inclusion conditions. Data extraction and analysis: two reviewers extracted and analyzed data on publications and reasons. Results: of 2060 publications identified, 75 were included. These mentioned reasons based on morality, legality, interests/incentives, or practicality, comprising 36 broad (235 narrow) types of reason. None of the included publications, which included informal reviews and reports by official bodies, mentioned more than 22 broad (59 narrow) types. For many reasons, publications differed about the reason’s interpretation, implications and/or persuasiveness. Publications differed also regarding costs, feasibility and legality of PTA. Limitations: reason types could be applied differently. The quality of reasons was not measured. Conclusion: this review captured a greater variety of reasons and of their uses than any included publication. Decisions based on informal reviews or sub-sets of literature are likely to be biased. Research is needed on PTA ethics, costs, feasibility and legality and on assessing the quality of reason-based literature. (shrink)

BET proteins such as Brd3 and Brd4 are chromatin‐associated factors, which control gene expression programs that promote inflammation and cancer. The Nrf2 transcription factor is a master regulator of genes that protect the organism against xenobiotic attack and oxidative stress. Nrf2 has demonstrated anti‐inflammatory activity and can support cancer cell malignancy. This review describes the discovery, mechanism and biomedical implications of the regulatory interplay between Nrf2 and BET proteins. Both Nrf2 and BET proteins are established drug targets. Small molecules (...) that either activate or suppress these proteins are currently tested in clinical trials. The crosstalk between Nrf2 and BET proteins may have important, and until now overlooked, implications for the therapeutic effects of these drugs. Based on the information covered in this review, it should be possible to design combinatorial treatment strategies for cancer and inflammatory diseases, which may improve the efficacy of targeting a Nrf2 or BET proteins individually. (shrink)

"Cluster randomized trials," in which groups of patients are randomly assigned to different therapeutic interventions, provide a powerful way of evaluating drugs. CRTs have not been widely used, in good part because of concerns about whether patients must give informed consent to participate in them. A better understanding of how CRTs fit into clinical practice resolves the concerns.

Selective reporting is prevalent in the medical literature, particularly in industry-sponsored research. In this paper, we expose selective reporting that is not evident without access to internal company documents. The published report of study 329 of paroxetine in adolescents sponsored by GlaxoSmithKline claims that “paroxetine is generally well tolerated and effective for major depression in adolescents”. By contrast, documents obtained during litigation reveal that study 329 was negative for efficacy on all 8 protocol specified outcomes and positive for harm.

Given their heterogeneity and lack of defining markers, it is surprising that multipotent mesenchymal stem/stromal cells (MSCs) have attracted so much translational attention, especially as increasing evidence points to their predominant effect being not by donor differentiation but via paracrine mediators and exosomes. Achieving long-term MSC donor chimerism for treatment of chronic disease remains a challenge, requiring enhanced MSC homing/engraftment properties and manipulation of niches to direct MSC behaviour. Meanwhile advances in nanoparticle technology are furthering the development of MSCs as (...) vehicles for targeted drug delivery. For treatment of acute injuries, systemic cell-free exosome delivery may ultimately displace current emphasis on empiric donor-cell transplantation for anti-inflammatory, immunomodulatory and repair-promoting effects. Exploration of potential clinical sources of MSCs has led to increased utilisation of perinatal MSCs in allogeneic clinical trials, reflecting their ease of collection and developmentally advantageous properties. (shrink)

An increasing number of drugs removed from the market because of unacceptable toxicity raises concerns regarding preapproval testing of drug safety. In the present paper it is postulated that the non-inferiority type of trial should be abandoned in favor of the superiority trial with active controls and less stringent (p<0.1, both for efficacy and toxicity) statistics. This approach will increase sensitivity of detection of drug-induced adverse effects at the expense of increasing false positive results regarding the difference in (...) efficacy between the tested and reference drug. Such a move will increase the protection of future patients. In addition, the proposed design is far more acceptable from the clinical (e.g. no need to specify the statistically expected “unimportant” number of deaths) and ethical points of view, as well as being favored by the strong incentive of involved parties. In the second part of this paper arguments are presented in favor of the hypothesis that placebo (still used in some superiority trials) does not induce adverse effects. The assertion that placebo may induce adverse effects is probably biased by the nature of the clinical experiment. Such a conclusion is supported by studies indicating that placebo-induced adverse effects are disease — and treatment — specific. The modification of clinical trials according to the proposed changes may increase the trials’ sensitivity at detecting adverse effects of drugs. (shrink)

Many children in the USA are prescribed psychotropic drugs that have not been fully investigated in paediatric clinical trials. The common practice of prescribing psychotropic drugs off-label poses unknown and potentially serious short- and long-term consequences for these children. This paper briefly reviews the factors associated with the lack of paediatric clinical trials. We advocate a shift toward increasing paediatric trials with psychotropic drugs through a combination of adequate safety controls, additional reimbursement/compensation, a more organised and large-scale (...) effort to collate results and outcomes across researchers and studies and additional public education about the importance of this research. In addition, we encourage the re-examination of the ethical standards for children's participation in phase 1 clinical trials as well as argue for longitudinal developmental studies on children who are prescribed off-label psychotropic drugs. (shrink)