[Cost of high-throughput sequencing (NGS) technologies: Literature review and insights]. / Coût des technologies de séquençage haut débit (NGS) : revue de la littérature et enseignements.

Although high-throughput sequencing technologies (Next-Generation Sequencing [NGS]) are revolutionizing medicine, the estimation of their production cost for pricing/tariffication by health systems raises methodological questions. The objective of this review of cost studies of high-throughput sequencing techniques is to draw lessons for producing robust cost estimates of these techniques. We analyzed, using an eleven item analysis framework, micro-costing studies of high-throughput sequencing technologies (n=17), including two studies conducted in the French context. The factors of variability between the studies that we identified were temporality (early evaluation of the innovation vs. evaluation of a mature technology), the choice of cost evaluation method (scope, micro- vs. gross-costing technique), the choice of production steps observed and the transposability of these studies. The lessons we have learned are that it is necessary to have a comprehensive vision of the sequencing production process by integrating all the steps from the collection of the biological sample to the delivery of the result to the clinician. It is also important to distinguish between what refers to the local context and what refers to the general context, by favouring the use of mixed methods to calculate costs. Finally, sensitivity analyses and periodic re-estimation of the costs of the techniques must be carried out in order to be able to revise the tariffs according to changes linked to the diffusion of the technology and to competition between reagent suppliers.

Hypoparathyroidism-related health care utilization and expenditure during the first postoperative year after total thyroidectomy for cancer: a comprehensive national cohort study.

Objectives: Hypoparathyroidism is the most common complication of total thyroidectomy for cancer, and requires calcium and/or vitamin D supplementation for an unpredictable period of time. The additional cost associated with this complication has not hitherto been assessed. The aim of this study was to assess the economic burden of postoperative hypoparathyroidism after total thyroidectomy for cancer in France. Methods: Based on the French national cancer cohort, which extracts data from the French National Health Data System (SNDS), all adult patients who underwent a total thyroidectomy for cancer in France between 2011 and 2015 were identified, and their healthcare resource use during the first postoperative year was compared according to whether they were treated postoperatively with calcium and/or vitamin D or not. Univariate and multivariate cost analyses were performed with the non-parametric Wilcoxon test and generalized linear model (gamma distribution and log link), respectively. Results: Among the 31,175 patients analyzed (75% female, median age: 52y), 13,247 (42%) started calcium and/or vitamin D supplementation within the first postoperative month, and 2,855 patients (9.1%) were still treated at 1 year. Over the first postoperative year, mean overall and specific health expenditures were significantly higher for treated patients than for untreated patients: €7,233 vs €6,934 per patient (p<0.0001) and €478.6 vs €332.7 per patient (p<0.0001), respectively. After adjusting for age, gender, Charlson Comorbidity index, ecological deprivation index, types of thyroid resection, lymph node dissection and complications, year and region, the incremental cost of overall health care utilization was €142 (p<0.004). Conclusion: Our study found a significant additional cost in respect of health expenditures for patients who had hypoparathyroidism after thyroidectomy for cancer, over the first postoperative year. Five-year follow-up is planned to assess the impact of more severe long-term complications on costs.

Lived experience of State-sponsored intra-national overseas therapeutic mobility for stem cell transplantation.

This article focuses on the lived experience of patients with haematological cancer who were transferred from La Réunion (a French overseas Department) to mainland France to undergo allogeneic haematopoietic stem cell transplantation (allo-HSCT). Based on a qualitative study conducted between February 2020 and January 2021 with allo-HSCT recipients, their family caregivers and healthcare professionals, we examined the social, economic and cultural factors shaping the patients' complex experience. We have called this kind of State-sponsored intra-national medical transfer "overseas therapeutic mobility". The patients' experience of this therapeutic journey beyond their geographical and cultural frontiers has some similarities with transnational therapeutic mobility. Overseas therapeutic mobility to undergo highly technical treatment requires considerable logistic efforts and mobility skills. The remoteness of their families and their affective and cultural environment give mobile patients a feeling of disorientation and causes them much social suffering. The two-fold condition of being a sick person with a possibly lethal disease and being treated overseas can be regarded as a double ordeal. In addition, the unfunded costs place a heavy burden on the patients and those whose families have limited resources. This study points to the cleavages which occur between post-colonial overseas regions and mainland France, and the territorial inequalities existing in patients' access to specialized treatment due to French policies of healthcare centralization.

Self-reported functional assessment after treatment for prostate cancer: 5-year results of the prospective cohort VICAN.

Objective: We aimed to assess the long-term association of therapeutic strategies with urinary, sexual function and health-related quality of life (HR-QoL) for 5-year prostate cancer (PC) survivors. Materials & methods: The VICAN survey consisted of self-reported data prospectively collected, including living conditions, treatment side effects and quality of life (QoL) of cancer survivors. Results: Among the 434 PC survivors, 52.8% reported urinary incontinence (UI) and 55.8% reported erectile dysfunction (ED). Patients treated with radical prostatectomy with salvage radiotherapy reported significantly more UI (p = 0.014) and more ED (p = 0.012) compared with other strategies. UI was significantly associated with physical and mental health-related QoL (p = 0.045 and p = 0.049, respectively). Conclusion: Self-assessed functional outcomes 5 years after PC diagnosis remain poor and could have an impact on health-related QoL.

Patients treated for prostate cancer may have long-term consequences due to the treatment they receive ­ in particular urinary incontinence (UI) and erectile dysfunction (ED). We analyzed self-reported data from 434 patients diagnosed with prostate cancer 5 years earlier, focusing especially on treatment side effects and the impact on patient quality of life. Of these patients, 52.8% reported UI and 55.8% reported ED. Patients treated with surgery plus radiotherapy reported significantly more UI and more ED compared with other treatment strategies. We have also shown that UI has an impact on physical and mental quality of life of these patients. In conclusion, functional recovery 5 years after prostate cancer diagnosis remains poor and requires implementation of new, long-term management strategies for cancer survivors.

The use of 'added benefit' to determine the price of new anti-cancer drugs in France, 2004-2017.

BACKGROUND: Increasing drug prices strains budgets. Assessing the relation between added benefit and prices can help clinical decision-making and resource allocation. METHODS: We assessed, over a period of 13 years, the relation between added therapeutic benefit and prices for drugs to treat solid tumours in France using the French High Authority of Health Scale (ASMR) and the European Society for Medical Oncology-Magnitude of Clinical Benefit Scale (MCBS). RESULTS: In total, 36 medications were approved for 68 indications. There was a weak correlation between ASMR and MCBS scales (Spearman's |ρ| = 0.28). Drugs had low added benefit on both ASMR (71%) and MCBS (49%). Mean monthly price for new drugs was €4616 (S.D., €3096), ranging from €1795 to €19,675 and increased by 47% comparing 2004-2012 with 2013-2017. The mean monthly price difference of new drugs over their comparator was €3700 (S.D., €3934) ranging between a €13,853 decrease and a €19,675 increase. There was a weak but statistically significant correlation between ASMR and price (|ρ| = 0.35, p = 0.004) and between MCBS and price (|ρ| = 0.33, p = 0.005). Correlations between added benefit and prices were similar or higher for first indications (ASMR, |ρ| = 0.37, p = 0.030; MCBS, |ρ| = 0.48, p = 0.004). In first indications, mean monthly prices increased €3954 for drugs without ASMR added benefit. The mean annual price and price increase for first indications offering no ASMR benefit was €57,312 and €47,448, respectively. CONCLUSION: Prices and benefit are weakly correlated. However, prices increased substantially even for drugs with no added benefit.

The Age Limit Does Not Exist: A Pilot Usability Assessment of a SMS-Messaging and Smartwatch-Based Intervention for Older Adults with Depression.

Current treatments for major depressive disorder are either less effective for older adults (i.e. pharmacotherapy) or are challenging to extend to community settings (i.e. psychotherapy). To improve and extend mental health treatment for older adults, our team has expanded a previously developed streamlined talk-therapy model to incorporate a technology package that includes patient-reported outcome questions (sent via SMS) and a smartwatch. The goal of this pilot study was to assess and improve the usability, usefulness, and acceptability of the technology package. We completed a pilot feasibility and usability assessment with 15 older adults. Participants demonstrated the feasibility of use of the intervention, successfully completing 99% of their assigned tasks during the pilot. Findings were used to address usability barriers in preparation for future clinical trials. Our results highlight the importance completing usability assessment and involving older adults in the intervention design process when incorporating technology into care.

Health-related quality of life in remitted psychotic depression✰.

BACKGROUND: Some patients with major depression continue to demonstrate deficits in health-related quality of life (HRQL) following remission. No data exist, however, regarding HRQL in remitted psychotic depression. In this study, we aimed to characterize HRQL in patients with psychotic depression receiving controlled pharmacotherapy. METHODS: This is a secondary analysis of a randomized controlled trial studying continuation pharmacotherapy of psychotic depression. We compared participants' HRQL (measured using the SF-36) between baseline and remission and to population norms. We also compared SF-36 scores stratified by age and gender and examined the correlation between SF-36 scores and medical burden, depression score and neuropsychological performance in remission. RESULTS: SF-36 scores were significantly lower than population norms at baseline, but improved following remission to the level of population norms. Neither SF-36 scores nor magnitude of SF-36 improvement differed substantially between genders or between younger and older participants. In remission, depression scores were correlated with most SF-36 scales and medical burden was correlated with SF-36 scales measuring physical symptoms. Neuropsychological measures were generally not correlated with SF-36 scores. LIMITATIONS: This study was a secondary analysis not powered specifically to measure HRQL as an outcome variable and the SF-36 was the only HRQL measure used. CONCLUSIONS: Participants with remitted psychotic depression demonstrated levels of HRQL comparable to population norms, despite marked impairment in HRQL when acutely ill. This finding suggests that, when treated in a rigorous manner, many patients with this severe illness improve significantly from a clinical and HRQL perspective.

Correction: Cost of cancer diagnosis using next-generation sequencing targeted gene panels in routine practice: a nationwide French study.

Since the publication of the article, it has been noted that there is an error in Table 2. Where 543€ is listed in the final column of the table, this should have been written as 550€.

Cost of cancer diagnosis using next-generation sequencing targeted gene panels in routine practice: a nationwide French study.

It is currently unclear if next-generation sequencing (NGS) technologies can be implemented in the diagnosis setting at an affordable cost. The aim of this study was to measure the total cost of performing NGS in clinical practice in France, in both germline and somatic cancer genetics.The study was performed on 15 French representative cancer molecular genetics laboratories performing NGS panels' tests. The production cost was estimated using a micro-costing method with resources consumed collected in situ in each laboratory from a healthcare provider perspective. In addition, we used a top-down methodology for specific post-sequencing steps including bioinformatics, technical validation, and biological validation. Additional non-specific costs were also included. Costs were detailed per step of the process (from the pre-analytical phase to delivery of results), and per cost driver (consumables, staff, equipment, maintenance, overheads). Sensitivity analyses were performed.The mean total cost of NGS for targeted gene panels was estimated to 607€ (±207) in somatic genetics and 550€ (±140) in germline oncogenetic analysis. Consumables were the highest cost driver of the sequencing process. The sensitivity analysis showed that a 25% reduction of consumables resulted in a 15% decrease in total NGS cost in somatic genetics, and 13% in germline analysis. Additional costs accounted for 30-32% of the total NGS costs.Beyond cost assessment considerations, the diffusion of NGS technologies will raise questions about their efficiency when compared to more targeted approaches, and their added value in a context of routine diagnosis.

[Anticancer drugs: Which prices for therapeutic innovations?]. / Médicaments du cancer : quelles innovations et à quel prix ?

The expanding knowledge of the biological mechanisms underlying tumor development made it possible the recent emergence of new therapeutic approaches that are considered as undoubtedly innovative. Yet, to define and to evaluate the magnitude of a drug innovation require an examination of its intrinsic drug properties, medical utility as well as its mode of emergence. Recently, international academic societies, such as ESMO and ASCO, have proposed practical tools that may help quantifying the medical value of a given innovation. Currently, the sustained flux of therapeutic innovations in oncology is associated with an unprecedented growth of costs, the actual determinants of which remain under debate, but raising the critical issue of drugs pricing, and their potential individual or societal "financial toxicity".

Cost-Effectiveness of Conventional vs Robotic-Assisted Laparoscopy in Gynecologic Oncologic Indications.

OBJECTIVE: Robotic surgical techniques are known to be expensive, but they can decrease the cost of hospitalization and improve patients' outcomes. The aim of this study was to compare the costs and clinical outcomes of conventional laparoscopy vs robotic-assisted laparoscopy in the gynecologic oncologic indications. METHODS: Between 2007 and 2010, 312 patients referred for gynecologic oncologic indications (endometrial and cervical cancer), including 226 who underwent conventional laparoscopy and 80 who underwent robot-assisted laparoscopy, were included in this prospective multicenter study. The direct costs, operating theater costs, and hospital costs were calculated for both surgical strategies using the microcosting method. RESULTS: Based on an average number of 165 surgical cases performed per year with the robot, the total extra cost of using the robot was €1456 per intervention. The robot-specific costs amounted to €2213 per intervention, and the cost of the robot-specific surgical supplies was €957 per intervention. The cost of the surgical supplies specifically required by conventional laparoscopy amounted to €1432, which is significantly higher than that of the robotic supplies (P < 0.001). Hospital costs were lower in the case of the robotic strategy (€2380 vs €2841, P < 0.001) because these patients spent less time in intensive care (0.38 vs 0.85 days). Operating theater costs were higher in the case of the robotic strategy (€1490 vs €1311, P = 0.0004) because the procedure takes longer to perform (4.98 hours vs 4.38 hours). CONCLUSIONS: The main driver of additional costs is the fixed cost of the robot, which is not compensated by the lower hospital room costs. The robot would be more cost-effective if robotic interventions were performed on a larger number of patients per year or if the purchase price of the robot was reduced. A shorter learning curve would also no doubt decrease the operating theater costs, resulting in financial benefits to society.

Patients' self-assessment versus investigators' evaluation in a phase III trial in non-castrate metastatic prostate cancer (GETUG-AFU 15).

BACKGROUND: Toxicity, which is a key parameter in the evaluation of cancer treatments, can be underestimated by clinicians. We investigated differences between patients and physicians in reporting adverse events of androgen deprivation therapy (ADT) with or without docetaxel in a multicentre phase III trial in non-castrate metastatic prostate cancer. METHODS: The 385 patients included were invited to complete a 26-symptom questionnaire 3 and 6 months after the start of treatment, among which eighteen symptoms were also assessed by physicians, reported in medical records and graded using the Common Toxicity Criteria of the National Cancer Institute. Positive and negative agreements as well as Kappa concordance coefficients were computed. FINDINGS: Data were available for 220 and 165 patients at 3 and 6 months respectively. Physicians systematically under-reported patients' symptoms. Positive agreement rates (at respectively 3 and 6 months) for the five most commonly reported symptoms were: 61.0% and 64.3% hot flushes, 50.0% and 43.6% fatigue, 29.4% and 31.1% sexual dysfunction, 24.4% and 14.4% weigh gain/loss, 16.7% and 19.3% for joint/muscle pain. For symptoms most frequently reported as disturbing or very disturbing by patients, the clinicians' failure to report them ranged from 50.8% (hot flushes) to 89.5% (joint/muscle pain) at 3 months, and from 48.2% (hot flushes) to 88.4% (joint/muscle pain) at 6 months. INTERPRETATION: Physicians often failed to report treatment-related symptoms, even the most common and disturbing ones. Patients' self-evaluation of toxicity should be used in clinical trials to improve the process of drug assessment in oncology. FUNDING: French Health Ministry and Institut National du Cancer (PHRC), Sanofi-Aventis, Astra-Zeneca, and Amgen.

Improving engagement in mental health treatment for home meal recipients with depression.

BACKGROUND: Staff who provide support services to older adults are in a unique position to detect depression and offer a referral for mental health treatment. Yet integrating mental health screening and recommendations into aging services requires staff learn new skills to integrate mental health and overcome client barriers to accepting mental health referrals. This paper describes client rates of depression and a novel engagement intervention (Open Door) for homebound older adults who are eligible for home delivered meals and screened for depression by in-home aging service programs. METHODS: Homebound older adults receiving meal service who endorsed depressive symptoms were interviewed to assess depression severity and rates of suicidal ideation. Open Door is a brief psychosocial intervention to improve engagement in mental health treatment by collaboratively addressing the individual level barriers to care. The intervention targets stigma, misconceptions about depression, and fears about treatment, and is designed to fit within the roles and responsibilities of aging service staff. RESULTS: Among 137 meal recipients who had symptoms when screened for depression as part of routine home meal service assessments, half (51%) had Major Depressive Disorder and 13% met criteria for minor depression on the SCID. Suicidal ideation was reported by 29% of the sample, with the highest rates of suicidal ideation (47%) among the subgroup of individuals with Major Depressive Disorder. CONCLUSION: Individuals who endorse depressive symptoms during screening are likely to have clinically significant depression and need mental health treatment. The Open Door intervention offers a strategy to overcome barriers to mental health treatment engagement and to improve the odds of quality care for depression.

Monitoring of HIV viral load, CD4 cell count, and clinical assessment versus clinical monitoring alone for antiretroviral therapy in low-resource settings (Stratall ANRS 12110/ESTHER): a cost-effectiveness analysis.

BACKGROUND: In low-income countries, the use of laboratory monitoring of patients taking antiretroviral therapy (ART) remains controversial in view of persistent resource constraints. The Stratall trial did not show that clinical monitoring alone was non-inferior to laboratory and clinical monitoring in terms of immunological recovery. We aimed to evaluate the costs and cost-effectiveness of the ART monitoring approaches assessed in the Stratall trial. METHODS: The randomised, controlled, non-inferiority Stratall trial was done in a decentralised setting in Cameroon. Between May 23, 2006, and Jan 31, 2008, ART-naive adults were randomly assigned (1:1) to clinical monitoring (CLIN) or viral load and CD4 cell count plus clinical monitoring (LAB) and followed up for 24 months. We calculated costs, number of life-years saved (LYS), and incremental cost-effectiveness ratios (ICERs) with data from patients who had been followed up for at least 6 months. We considered two cost scenarios in which viral load plus CD4 cell count tests cost either US$95 (scenario 1; Abbott RealTime HIV-1 assay) or $63 (scenario 2; generic assay). We compared ICERs with a WHO-recommended threshold of three times the per-person gross domestic product (GDP) for Cameroon ($3670-3800) and an alternative lower threshold of $2385 to determine cost-effectiveness. We assessed uncertainty with one-way sensitivity analyses and cost-effectiveness acceptability curves. FINDINGS: 188 participants who underwent LAB and 197 who underwent CLIN were followed up for at least 6 months. In scenario 1, LAB increased costs by a mean of $489 (SD 430) per patient and saved 0·103 life-years compared with CLIN (ICER of $4768 [95% CI 3926-5613] per LYS). In scenario 2, the incremental mean cost of LAB was $343 (SD 425) -ie, an ICER of $3339 (2507-4173) per LYS. A combined strategy in which LAB would only be used in patients starting ART with a CD4 count of 200 cells per µL or fewer suggests that 0·120 life-years would be saved at an additional cost of $259 per patient in scenario 1 (ICER of $2167 [95% CI 1314-3020] per LYS) and $181 in scenario 2 (ICER of $1510 [692-2329] per LYS) when compared with CLIN. INTERPRETATION: Laboratory monitoring was not cost effective in 2006-10 compared with clinical monitoring when the Abbott RealTime HIV-1 assay was used according to the $3670 cost-effectiveness threshold (three times per-person GDP in Cameroon), but it might be cost effective if a generic in-house assay is used. FUNDING: French National Agency for Research on AIDS and Viral Hepatitis (ANRS) and Ensemble pour une Solidarité Thérapeutique Hospitalière En Réseau (ESTHER).

[Health care expenditures linked to the use of targeted therapies and diagnostic tests for cancer patients]. / Tests diagnostiques et thérapies ciblées en cancérologie - Enjeux économiques.

Recent advances in cancer research have led to the development of very expensive new drugs for cancer treatment: the targeted therapies. However, the introduction of these new therapeutic agents which costs are increasing could threaten the diffusion of these innovations. It is thus necessary to determine whether the use of targeted therapies yields clinical benefits that justify their increasing cost. The development of companion diagnosis tests to target drugs and thus to select those patients most likely to benefit from the treatment may provide a useful means of containing the progress of health care expenditures and improve the cost/benefit ratio. In this paper, we present current estimates of health care expenditures linked to the use of targeted therapies for cancer care. We also discuss some of the issues related to the regulatory decisions (pricing and reimbursement) concerning the test/drug couple.

Economic issues involved in integrating genomic testing into clinical care: the case of genomic testing to guide decision-making about chemotherapy for breast cancer patients.

The use of taxanes to treat node-positive (N+) breast cancer patients is associated with heterogeneous benefits as well as with morbidity and financial costs. This study aimed to assess the economic impact of using gene expression profiling to guide decision-making about chemotherapy, and to discuss the coverage/reimbursement issues involved. Retrospective data on 246 patients included in a randomised trial (PACS01) were analyzed. Tumours were genotyped using DNA microarrays (189-gene signature), and patients were classified depending on whether or not they were likely to benefit from chemotherapy regimens without taxanes. Standard anthracyclines plus taxane chemotherapy (strategy AT) was compared with the innovative strategy based on genomic testing (GEN). Statistical analyses involved bootstrap methods and sensitivity analyses. The AT and GEN strategies yielded similar 5-year metastasis-free survival rates. In comparison with AT, GEN was cost-effective when genomic testing costs were less than 2,090€. With genomic testing costs higher than 2,919€, AT was cost-effective. Considering a 30% decrease in the price of docetaxel (the patent rights being about to expire), GEN was cost-effective if the cost of genomic testing was in the 0€-1,139€, range; whereas AT was cost-effective if genomic testing costs were higher than 1,891€. The use of gene expression profiling to guide decision-making about chemotherapy for N+ breast cancer patients is potentially cost-effective. Since genomic testing and the drugs targeted in these tests yield greater well-being than the sum of those resulting from separate use, questions arise about how to deal with extra well-being in decision-making about coverage/reimbursement.

High-dose chemotherapy for patients with high-risk breast cancer: a clinical and economic assessment using a quality-adjusted survival analysis.

OBJECTIVE: The benefit of high-dose chemotherapy (HDC) has not been clearly demonstrated. It may offer disease-free survival improvement at the expense of major toxicity and increasing cost. We evaluated the trade-offs between toxicity, relapse, and costs using a quality-adjusted time without symptoms or toxicity (Q-TWiST) analysis. PATIENTS AND METHODS: The analysis was conducted in the context of a randomized trial (PEGASE 01) evaluating the benefit of HDC for 314 patients with high-risk breast cancer. A Q-TWiST analysis was first performed to compare HDC with standard chemotherapy. We then used the results of this Q-TWiST analysis to inform a cost per quality-adjusted life-year (QALY) comparison between treatments. RESULTS: Q-TWiST durations were in favor of HDC, whatever the weighting coefficients used for the analysis. This benefit was significant when the weighting coefficient related to the time spent after relapse was low (<0.38). For quite high values of this coefficient (>0.78), HDC offered no benefit. For intermediate values, the results depended on the weighting coefficient attributed to the toxicity period. The incremental cost per QALY ranged from 12,691euro/QALY to 26,439euro/QALY, according to the coefficients used to weight toxicity and relapse. CONCLUSION: The benefits of HDC outweigh the burdens of treatment for a wide range of utility coefficients. Economic impact is not a barrier to HDC diffusion in this situation. Nevertheless, no significant benefit was demonstrated for a certain range of utility values.

Impact of social support and self-efficacy on functioning in depressed older adults with chronic obstructive pulmonary disease.

OBJECTIVE: The objective of this study was to examine the association between social support, self-efficacy, and functioning among a sample of depressed older adults with chronic obstructive pulmonary disease (COPD). METHODS: Participants were recruited immediately following admission to an acute pulmonary rehabilitation unit of a rehabilitation hospital. One hundred and fifty-six subjects completed assessments of depression, functioning, social support, and self-efficacy at admission to the rehabilitation unit. Regression analyses were conducted to evaluate the impact of different aspects of social support and self-efficacy on overall functioning at admission. RESULTS: Controlling for depression, COPD severity, and age, subjective social support (p = 0.05) and self-efficacy (p < 0.01) were associated with overall functioning. CONCLUSION: The perception of social support as well as self-efficacy are important constructs related to overall functioning among depressed older adults with COPD. Attention to these psychosocial variables in health management interventions may help maintain or improve the overall functioning of depressed COPD patients.

Peer support to promote medication adherence among people living with HIV/AIDS: the benefits to peers.

Since early in the AIDS epidemic, HIV-positive individuals have benefited from the services of peer support or buddy programs. However, little research has focused on the experience of the peer providing support. We conducted qualitative interviews with nine HIV-positive peers who had participated in an intervention designed to provide support to other HIV-positive individuals as one means of promoting antiretroviral therapy adherence. Analyses of the peers' common dialogue about their involvement in the study revealed four main themes: social acceptance, reciprocal support, personal growth and empowerment, and resistance and other challenges. Recommendations for future research and for implementing similar interventions in a health care setting are provided.