Protocol > Research Study
BMJ Open. 2020 October 10; Volume 10 (Issue 10); e036599.; DOI:10.1136/bmjopen-2019-036599
Sweeney S, Gomez G, Kitson N, Sinha A, Yatskevich N, et al.
BMJ Open. 2020 October 10; Volume 10 (Issue 10); e036599.; DOI:10.1136/bmjopen-2019-036599
INTRODUCTION
Current treatment regimens for multidrug-resistant tuberculosis (MDR-TB) are long, poorly tolerated and have poor outcomes. Furthermore, the costs of treating MDR-TB are much greater than those for treating drug-susceptible TB, both for health service and patient-incurred costs. Urgent action is needed to identify short, effective, tolerable and cheaper treatments for people with both quinolone-susceptible and quinolone-resistant MDR-TB. We present the protocol for an economic evaluation (PRACTECAL-EE substudy) alongside an ongoing clinical trial (TB-PRACTECAL) aiming to assess the costs to patients and providers of new regimens, as well as their cost-effectiveness and impact on participant poverty levels. This substudy is based on data from the three countries participating in the main trial.
METHODS AND ANALYSIS
Primary cost data will be collected from the provider and patient perspectives, following economic best practice. We will estimate the probability that new MDR-TB regimens containing bedaquiline, pretomanid and linezolid are cost-effective from a societal perspective as compared with the standard of care for MDR-TB patients in Uzbekistan, South Africa and Belarus. Analysis uses a Markov model populated with primary cost and outcome data collected at each study site. We will also estimate the impact of new regimens on prevalence of catastrophic patient costs due to TB.
ETHICS AND DISSEMINATION
Ethical approval has been obtained from the London School of Hygiene & Tropical Medicine and Médecins Sans Frontières. Local ethical approval will be sought in each study site. The results of the economic evaluation will be shared with the country health authorities and published in a peer-reviewed journal.
Current treatment regimens for multidrug-resistant tuberculosis (MDR-TB) are long, poorly tolerated and have poor outcomes. Furthermore, the costs of treating MDR-TB are much greater than those for treating drug-susceptible TB, both for health service and patient-incurred costs. Urgent action is needed to identify short, effective, tolerable and cheaper treatments for people with both quinolone-susceptible and quinolone-resistant MDR-TB. We present the protocol for an economic evaluation (PRACTECAL-EE substudy) alongside an ongoing clinical trial (TB-PRACTECAL) aiming to assess the costs to patients and providers of new regimens, as well as their cost-effectiveness and impact on participant poverty levels. This substudy is based on data from the three countries participating in the main trial.
METHODS AND ANALYSIS
Primary cost data will be collected from the provider and patient perspectives, following economic best practice. We will estimate the probability that new MDR-TB regimens containing bedaquiline, pretomanid and linezolid are cost-effective from a societal perspective as compared with the standard of care for MDR-TB patients in Uzbekistan, South Africa and Belarus. Analysis uses a Markov model populated with primary cost and outcome data collected at each study site. We will also estimate the impact of new regimens on prevalence of catastrophic patient costs due to TB.
ETHICS AND DISSEMINATION
Ethical approval has been obtained from the London School of Hygiene & Tropical Medicine and Médecins Sans Frontières. Local ethical approval will be sought in each study site. The results of the economic evaluation will be shared with the country health authorities and published in a peer-reviewed journal.
Journal Article > ResearchFull Text
Trials. 2021 December 4; Volume 22; 881 .; DOI:10.1186/s13063-021-05850-0
Wharton-Smith A, Horter SCB, Douch E, Gray NSB, James N, et al.
Trials. 2021 December 4; Volume 22; 881 .; DOI:10.1186/s13063-021-05850-0
BACKGROUND
Addressing the global burden of multidrug-resistant tuberculosis (MDR-TB) requires identification of shorter, less toxic treatment regimens. Médecins Sans Frontières (MSF) is currently conducting a phase II/III randomised controlled clinical trial, to find more effective, shorter and tolerable treatments for people with MDR-TB. Recruitment to the trial in Uzbekistan has been slower than expected; we aimed to study patient and health worker experiences of the trial, examining potential factors perceived to impede and facilitate trial recruitment, as well as general perceptions of clinical research in this context.
METHODS
We conducted a qualitative study using maximum variation, purposive sampling of participants. We carried out in-depth interviews (IDIs) and focus group discussions (FGDs) guided by semi-structured topic guides. In December 2019 and January 2020, 26 interviews were conducted with patients, Ministry of Health (MoH) and MSF staff and trial health workers, to explore challenges and barriers to patient recruitment as well as perceptions of the trial and research in general. Preliminary findings from the interviews informed three subsequent focus group discussions held with patients, nurses and counsellors. Focus groups adopted a person-centred design, brainstorming potential solutions to problems and barriers. Interviews and FGDs were audio recorded, translated and transcribed verbatim. Thematic analysis, drawing on constant comparison, was used to analyse the data.
RESULTS
Health system contexts may compete with new approaches especially when legislative health regulations or policy around treatment is ingrained in staff beliefs, perceptions and practice, which can undermine clinical trial recruitment. Trust plays a significant role in how patients engage with the trial. Decision-making processes are dynamic and associated with relationship to diagnosis, assimilation of information, previous knowledge or experience and influence of peers and close relations.
CONCLUSIONS
This qualitative analysis highlights ways in which insights developed together with patients and healthcare workers might inform approaches towards improved recruitment into trials, with the overall objective of delivering evidence for better treatments.
Addressing the global burden of multidrug-resistant tuberculosis (MDR-TB) requires identification of shorter, less toxic treatment regimens. Médecins Sans Frontières (MSF) is currently conducting a phase II/III randomised controlled clinical trial, to find more effective, shorter and tolerable treatments for people with MDR-TB. Recruitment to the trial in Uzbekistan has been slower than expected; we aimed to study patient and health worker experiences of the trial, examining potential factors perceived to impede and facilitate trial recruitment, as well as general perceptions of clinical research in this context.
METHODS
We conducted a qualitative study using maximum variation, purposive sampling of participants. We carried out in-depth interviews (IDIs) and focus group discussions (FGDs) guided by semi-structured topic guides. In December 2019 and January 2020, 26 interviews were conducted with patients, Ministry of Health (MoH) and MSF staff and trial health workers, to explore challenges and barriers to patient recruitment as well as perceptions of the trial and research in general. Preliminary findings from the interviews informed three subsequent focus group discussions held with patients, nurses and counsellors. Focus groups adopted a person-centred design, brainstorming potential solutions to problems and barriers. Interviews and FGDs were audio recorded, translated and transcribed verbatim. Thematic analysis, drawing on constant comparison, was used to analyse the data.
RESULTS
Health system contexts may compete with new approaches especially when legislative health regulations or policy around treatment is ingrained in staff beliefs, perceptions and practice, which can undermine clinical trial recruitment. Trust plays a significant role in how patients engage with the trial. Decision-making processes are dynamic and associated with relationship to diagnosis, assimilation of information, previous knowledge or experience and influence of peers and close relations.
CONCLUSIONS
This qualitative analysis highlights ways in which insights developed together with patients and healthcare workers might inform approaches towards improved recruitment into trials, with the overall objective of delivering evidence for better treatments.
Conference Material > Slide Presentation
Nyang'wa BT, Berry C, Motta I, Kazounis E
MSF Scientific Days International 2021: Research. 2021 May 19
Conference Material > Slide Presentation
Stringer B, Lowton K, Cusinato M, Fielding K, Liverko I, et al.
MSF Scientific Days International 2023. 2023 June 7; DOI:10.57740/by3w-4h53
Conference Material > Slide Presentation
Berry C, Motta I, Kazounis E, Fielding K, Dodd M, et al.
MSF Scientific Days International 2022. 2022 May 11; DOI:10.57740/v9ye-0032
Conference Material > Video (talk)
Berry C, Motta I, Kazounis E, Fielding K, Dodd M, et al.
MSF Scientific Days International 2022. 2022 June 7; DOI:10.57740/atfr-ws57
Journal Article > ReviewFull Text
Clin Infect Dis. 2024 March 20; Volume 78 (Issue 3); 730-741.; DOI:10.1093/cid/ciad653
Hasan T, Medcalf E, Nyang'wa BT, Egizi E, Berry C, et al.
Clin Infect Dis. 2024 March 20; Volume 78 (Issue 3); 730-741.; DOI:10.1093/cid/ciad653
BACKGROUND
Effectiveness, safety, tolerability, and adherence are critical considerations in shifting to shorter tuberculosis (TB) regimens. Novel 6-month oral regimens that include bedaquiline (B), pretomanid (Pa), and linezolid (L), with or without a fourth drug, have been shown to be as or more effective than the established longer regimens for the treatment of multidrug-resistant/rifampicin-resistant TB (MDR/RR-TB). We aimed to evaluate the safety and tolerability of linezolid in BPaL-containing regimens for the treatment of MDR/RR-TB among recently completed clinical trials.
METHODS
A review and meta-analysis was undertaken including published and unpublished data from clinical trials, conducted between 2010 and 2021, that evaluated regimens containing BPaL for the treatment of MDR/RR-TB. Individual patient data were obtained. For each BPaL-containing regimen, we evaluated the frequency and severity of treatment-related adverse events. The risk difference of adverse events for each regimen was calculated, in comparison to patients assigned to receiving the lowest cumulative exposure of linezolid.
RESULTS
Data from 3 clinical trials investigating 8 unique BPaL-containing regimens were included, comprising a total of 591 participants. Adverse events were more frequent in groups randomized to a higher cumulative linezolid dose. Among patients who were randomized to a daily dose of 1200 mg linezolid, 68 of 195 (35%) experienced a grade 3–4 adverse event versus 89 of 396 (22%) patients receiving BPaL-containing regimens containing 600 mg linezolid.
CONCLUSIONS
Regimens containing BPaL were relatively well tolerated when they included a daily linezolid dose of 600 mg. These novel regimens promise to improve the tolerability of treatment for MDR/RR-TB.
Effectiveness, safety, tolerability, and adherence are critical considerations in shifting to shorter tuberculosis (TB) regimens. Novel 6-month oral regimens that include bedaquiline (B), pretomanid (Pa), and linezolid (L), with or without a fourth drug, have been shown to be as or more effective than the established longer regimens for the treatment of multidrug-resistant/rifampicin-resistant TB (MDR/RR-TB). We aimed to evaluate the safety and tolerability of linezolid in BPaL-containing regimens for the treatment of MDR/RR-TB among recently completed clinical trials.
METHODS
A review and meta-analysis was undertaken including published and unpublished data from clinical trials, conducted between 2010 and 2021, that evaluated regimens containing BPaL for the treatment of MDR/RR-TB. Individual patient data were obtained. For each BPaL-containing regimen, we evaluated the frequency and severity of treatment-related adverse events. The risk difference of adverse events for each regimen was calculated, in comparison to patients assigned to receiving the lowest cumulative exposure of linezolid.
RESULTS
Data from 3 clinical trials investigating 8 unique BPaL-containing regimens were included, comprising a total of 591 participants. Adverse events were more frequent in groups randomized to a higher cumulative linezolid dose. Among patients who were randomized to a daily dose of 1200 mg linezolid, 68 of 195 (35%) experienced a grade 3–4 adverse event versus 89 of 396 (22%) patients receiving BPaL-containing regimens containing 600 mg linezolid.
CONCLUSIONS
Regimens containing BPaL were relatively well tolerated when they included a daily linezolid dose of 600 mg. These novel regimens promise to improve the tolerability of treatment for MDR/RR-TB.
Conference Material > Poster
Motta I, Cusinato M, Ludman A, Abdrasuliev T, Butabekov I, et al.
MSF Scientific Days International 2023. 2023 June 7; DOI:10.57740/vz2n-4971
Conference Material > Abstract
Gotham D, Martin M, Barber M, Kazounis E, Batts C, et al.
MSF Scientific Days International 2024. 2024 May 16
INTRODUCTION
Clinical trials are a cornerstone of medical innovation. Nonetheless, little information on the cost of conducting clinical trials is available, especially for clinical trials in the global south. This lack of data and transparency hinders the creation of reliable cost estimates and adequate funding of clinical trials in resource- limited settings. Following the recent adoption of the Médecins Sans Frontières (MSF) Clinical Trial Transparency Policy, we present a detailed cost report for TB-PRACTECAL.
METHODS
TB-PRACTECAL was an open-label, phase 2–3, multicentre randomised trial of all-oral regimens for the treatment of drug- resistant tuberculosis. Trial planning began in 2013 and work on publications continued into 2023. The trial took place in six sites across Belarus, South Africa, and Uzbekistan, and enrolled 552 patients. We analysed accounting data for the TB-PRACTECAL project, comprehensively including different costs, presented into 27 categories, by site, and by year, and at the per-patient level.
RESULTS
Total costs for TB-PRACTECAL were €33.9 million, of which 26% were at central level (costs incurred by the UK clinical trial team including trial planning, management, quality assurance, and analysis of results), while 72% were at the trial site level (across all six sites) and 2% were uncategorisable. At trial sites, the largest cost category was staff (43%), followed by external diagnostic services (11%), medicines (9%), other medical consumables (7%), external non-medical services (6%), and transport and travel (6%). Among medicines, the costliest were bedaquiline (46% of medicine costs), linezolid (16%), imipenem/ cilastatin (10%), and delamanid (9%). The mean cost per patient enrolled was €61,460 across the whole trial (including trial management overhead). When only site-level costs were considered, per-patient costs ranged between €19,998 and €45,942 across the six sites.
CONCLUSION
The costs of TB-PRACTECAL were similar to previously reported estimates for comparable clinical trials. However, TB- PRACTECAL included additional costs that would not typically be incurred in a commercial trial, such as investments in clinical research infrastructure and purchase of investigative medical products. To our knowledge, this is the first time MSF, or any other entity, published and analysed the disaggregated costs of a specific clinical trial. These data could help generate reliable predictions for future clinical trials and support planning and involvement, particularly in low-resource settings. Additionally, this study highlights the role of clinical trial cost disclosure in supporting both practical and policy discussions around the development of a more equitable system of biomedical R&D and fairer medicine pricing. Additionally, we developed a financial reporting template to facilitate future reporting of clinical trial cost by MSF and other entities investing in research.
Clinical trials are a cornerstone of medical innovation. Nonetheless, little information on the cost of conducting clinical trials is available, especially for clinical trials in the global south. This lack of data and transparency hinders the creation of reliable cost estimates and adequate funding of clinical trials in resource- limited settings. Following the recent adoption of the Médecins Sans Frontières (MSF) Clinical Trial Transparency Policy, we present a detailed cost report for TB-PRACTECAL.
METHODS
TB-PRACTECAL was an open-label, phase 2–3, multicentre randomised trial of all-oral regimens for the treatment of drug- resistant tuberculosis. Trial planning began in 2013 and work on publications continued into 2023. The trial took place in six sites across Belarus, South Africa, and Uzbekistan, and enrolled 552 patients. We analysed accounting data for the TB-PRACTECAL project, comprehensively including different costs, presented into 27 categories, by site, and by year, and at the per-patient level.
RESULTS
Total costs for TB-PRACTECAL were €33.9 million, of which 26% were at central level (costs incurred by the UK clinical trial team including trial planning, management, quality assurance, and analysis of results), while 72% were at the trial site level (across all six sites) and 2% were uncategorisable. At trial sites, the largest cost category was staff (43%), followed by external diagnostic services (11%), medicines (9%), other medical consumables (7%), external non-medical services (6%), and transport and travel (6%). Among medicines, the costliest were bedaquiline (46% of medicine costs), linezolid (16%), imipenem/ cilastatin (10%), and delamanid (9%). The mean cost per patient enrolled was €61,460 across the whole trial (including trial management overhead). When only site-level costs were considered, per-patient costs ranged between €19,998 and €45,942 across the six sites.
CONCLUSION
The costs of TB-PRACTECAL were similar to previously reported estimates for comparable clinical trials. However, TB- PRACTECAL included additional costs that would not typically be incurred in a commercial trial, such as investments in clinical research infrastructure and purchase of investigative medical products. To our knowledge, this is the first time MSF, or any other entity, published and analysed the disaggregated costs of a specific clinical trial. These data could help generate reliable predictions for future clinical trials and support planning and involvement, particularly in low-resource settings. Additionally, this study highlights the role of clinical trial cost disclosure in supporting both practical and policy discussions around the development of a more equitable system of biomedical R&D and fairer medicine pricing. Additionally, we developed a financial reporting template to facilitate future reporting of clinical trial cost by MSF and other entities investing in research.
Journal Article > ResearchFull Text
N Engl J Med. 2022 December 22; Volume 387 (Issue 25); 2331-2343.; DOI:10.1056/NEJMoa2117166
Nyang'wa BT, Berry C, Kazounis E, Motta I, Parpieva N, et al.
N Engl J Med. 2022 December 22; Volume 387 (Issue 25); 2331-2343.; DOI:10.1056/NEJMoa2117166
BACKGROUND
In patients with rifampin-resistant tuberculosis, all-oral treatment regimens that are more effective, shorter, and have a more acceptable side-effect profile than current regimens are needed.
METHODS
We conducted an open-label, phase 2–3, multicenter, randomized, controlled, noninferiority trial to evaluate the efficacy and safety of three 24-week, all-oral regimens for the treatment of rifampin-resistant tuberculosis. Patients in Belarus, South Africa, and Uzbekistan who were 15 years of age or older and had rifampin-resistant pulmonary tuberculosis were enrolled. In stage 2 of the trial, a 24-week regimen of bedaquiline, pretomanid, linezolid, and moxifloxacin (BPaLM) was compared with a 9-to-20-month standard-care regimen. The primary outcome was an unfavorable status (a composite of death, treatment failure, treatment discontinuation, loss to follow-up, or recurrence of tuberculosis) at 72 weeks after randomization. The noninferiority margin was 12 percentage points.
RESULTS
Recruitment was terminated early. Of 301 patients in stage 2 of the trial, 145, 128, and 90 patients were evaluable in the intention-to-treat, modified intention-to-treat, and per-protocol populations, respectively. In the modified intention-to-treat analysis, 11% of the patients in the BPaLM group and 48% of those in the standard-care group had a primary-outcome event (risk difference, -37 percentage points; 96.6% confidence interval [CI], -53 to -22). In the per-protocol analysis, 4% of the patients in the BPaLM group and 12% of those in the standard-care group had a primary-outcome event (risk difference, -9 percentage points; 96.6% CI, -22 to 4). In the as-treated population, the incidence of adverse events of grade 3 or higher or serious adverse events was lower in the BPaLM group than in the standard-care group (19% vs. 59%).
CONCLUSIONS
In patients with rifampin-resistant pulmonary tuberculosis, a 24-week, all-oral regimen was noninferior to the accepted standard-care treatment, and it had a better safety profile. (Funded by Médecins sans Frontières; TB-PRACTECAL ClinicalTrials.gov number, NCT02589782. opens in new tab.)
In patients with rifampin-resistant tuberculosis, all-oral treatment regimens that are more effective, shorter, and have a more acceptable side-effect profile than current regimens are needed.
METHODS
We conducted an open-label, phase 2–3, multicenter, randomized, controlled, noninferiority trial to evaluate the efficacy and safety of three 24-week, all-oral regimens for the treatment of rifampin-resistant tuberculosis. Patients in Belarus, South Africa, and Uzbekistan who were 15 years of age or older and had rifampin-resistant pulmonary tuberculosis were enrolled. In stage 2 of the trial, a 24-week regimen of bedaquiline, pretomanid, linezolid, and moxifloxacin (BPaLM) was compared with a 9-to-20-month standard-care regimen. The primary outcome was an unfavorable status (a composite of death, treatment failure, treatment discontinuation, loss to follow-up, or recurrence of tuberculosis) at 72 weeks after randomization. The noninferiority margin was 12 percentage points.
RESULTS
Recruitment was terminated early. Of 301 patients in stage 2 of the trial, 145, 128, and 90 patients were evaluable in the intention-to-treat, modified intention-to-treat, and per-protocol populations, respectively. In the modified intention-to-treat analysis, 11% of the patients in the BPaLM group and 48% of those in the standard-care group had a primary-outcome event (risk difference, -37 percentage points; 96.6% confidence interval [CI], -53 to -22). In the per-protocol analysis, 4% of the patients in the BPaLM group and 12% of those in the standard-care group had a primary-outcome event (risk difference, -9 percentage points; 96.6% CI, -22 to 4). In the as-treated population, the incidence of adverse events of grade 3 or higher or serious adverse events was lower in the BPaLM group than in the standard-care group (19% vs. 59%).
CONCLUSIONS
In patients with rifampin-resistant pulmonary tuberculosis, a 24-week, all-oral regimen was noninferior to the accepted standard-care treatment, and it had a better safety profile. (Funded by Médecins sans Frontières; TB-PRACTECAL ClinicalTrials.gov number, NCT02589782. opens in new tab.)