Public values and guiding principles for implementing epitope compatibility in kidney transplantation allocation criteria: results from a Canadian online public deliberation

A 4-Site Public Deliberation Project on the Acceptability of Youth Self-Consent in Biomedical HIV Prevention Trials: Assessment of Facilitator Fidelity to Key Principles

BACKGROUND

Public deliberation is an approach used to engage persons with diverse perspectives in discussions and decision-making about issues affecting the public that are controversial or value laden. Because experts have identified the need to evaluate facilitator performance, our research team developed a framework to assess the fidelity of facilitator remarks to key principles of public deliberation.

OBJECTIVE

This report describes how the framework was used to assess facilitator fidelity in a 4-site public deliberation project on the acceptability of minor self-consent in biomedical HIV prevention research.

METHODS

A total of 88 individuals participated in 4 deliberation sessions held in 4 cities throughout the United States. The sessions, facilitated by 18 team members, were recorded and transcribed verbatim. Facilitator remarks were highlighted, and predetermined coding rules were used to code the remarks to 1 of 6 principles of quality deliberations. A variety of display tables were used to organize the codes and calculate the number of facilitator remarks that were consistent or inconsistent with each principle during each session across all sites. A content analysis was conducted on the remarks to describe how facilitator remarks aligned or failed to align with each principle.

RESULTS

In total, 735 remarks were coded to one of the principles; 516 (70.2%) were coded as consistent with a principle, and 219 (29.8%) were coded as inconsistent. A total of 185 remarks were coded to the principle of equal participation (n=138, 74.6% as consistent; n=185, 25.4% as inconsistent), 158 were coded to expression of diverse opinions (n=110, 69.6% as consistent; n=48, 30.4% as inconsistent), 27 were coded to respect for others (n=27, 100% as consistent), 24 were coded to adoption of a societal perspective (n=11, 46% as consistent; n=13, 54% as inconsistent), 99 were coded to reasoned justification of ideas (n=81, 82% as consistent; n=18, 18% as inconsistent), and 242 were coded to compromise or movement toward consensus (n=149, 61.6% as consistent; n=93, 38.4% as inconsistent). Therefore, the counts provided affirmation that most of the facilitator remarks were aligned with the principles of deliberation, suggesting good facilitator fidelity. By considering how the remarks aligned or failed to align with the principles, areas where facilitator fidelity can be strengthened were identified. The results indicated that facilitators should focus more on encouraging quieter members to participate, refraining from expressing personal opinions, promoting the adoption of a societal perspective and reasoned justification of opinions, and inviting deliberants to articulate their areas of common ground.

CONCLUSIONS

The results provide an example of how a framework for assessing facilitator fidelity was used in a 4-site deliberation project. The framework will be refined to better address issues related to balancing personal and public perspectives, managing plurality, and mitigating social inequalities.

Anti-Human Leukocyte Antigen Antibody Detection from Terasaki's Humoral Theory to Delisting Strategies in 2024

The human leukocyte antigen (HLA) system plays a critical role in transplant immunology, influencing outcomes through various immune-mediated rejection mechanisms. Hyperacute rejection is driven by preformed donor-specific antibodies (DSAs) targeting HLAs, leading to complement activation and graft loss within hours to days. Acute rejection typically occurs within six months post-transplantation, involving cellular and humoral responses, including the formation of de novo DSAs. Chronic rejection, a key factor in long-term graft failure, often involves class II DSAs and complex interactions between the innate and adaptive immune systems. Advancements in HLA antibody detection, particularly single antigen bead (SAB) assays, have improved the sensitivity and characterization of DSAs. However, these assays face challenges like false positives from denatured antigens and false negatives due to low antibody titers or complement competition. Furthermore, molecular mismatch (MM) analysis has emerged as a potential tool for refining donor-recipient compatibility but faces some issues such as a lack of standardization. Highly sensitized patients with calculated panel-reactive antibodies (cPRA) of 100% face barriers to transplantation. Strategies like serum dilution, novel therapies (e.g., Imlifidase), and delisting approaches could refine immunological risk assessment and delisting strategies are essential to expand transplant opportunities for these patients.

Canadian Kidney Transplant Professionals' Perspectives on Precision Medicine and Molecular Matching in Kidney Allocation

Background

Antibody-mediated rejection is an important cause of kidney transplant loss. A new strategy requiring application of precision medicine tools in transplantation considers molecular compatibility between donors and recipients and holds the promise of improved immunologic risk, preventing rejection and premature graft loss. The objective of this study was to gather Canadian transplant professionals' perspectives on molecular compatibility in kidney transplantation.

Methods

Seventeen Canadian transplant professionals (14 nephrologists, 2 nurses, and 1 surgeon) participated in semistructured interviews in 2021. The interviews were digitally recorded, transcribed, and analyzed using the qualitative description approach.

Results

Participants identified fair access to transplantation as the most important principle in kidney allocation. Molecular compatibility was viewed as a promising innovation. However, participants were concerned about increased waiting times, negative impact on some patients, and potential problems related to the adequacy of information explaining this new technology. To mitigate the challenges associated with molecular matching, participants suggested integrating a maximum waiting time for molecular-matched kidneys and expanding the program nationally/internationally.

Conclusions

Molecular matching in kidney transplantation is viewed as a promising technology for decreasing the incidence of antibody-mediated rejection and improving graft survival. Further studies are needed to determine how to ethically integrate this technology into the kidney allocation algorithm.

Adding epitope compatibility to deceased donor kidney allocation criteria: recommendations from a pan-Canadian online public deliberation

BACKGROUND

The widening supply-demand imbalance for kidneys necessitates finding ways to reduce rejection and improve transplant outcomes. Human leukocyte antigen (HLA) epitope compatibility between donor and recipient may minimize premature graft loss and prolong survival, but incorporating this strategy to deceased donor allocation criteria prioritizes transplant outcomes over wait times. An online public deliberation was held to identify acceptable trade-offs when implementing epitope compatibility to guide Canadian policymakers and health professionals in deciding how best to allocate kidneys fairly.

METHODS

Invitations were mailed to 35,000 randomly-selected Canadian households, with over-sampling of rural/remote locations. Participants were selected for socio-demographic diversity and geographic representation. Five two-hour online sessions were held from November-December 2021. Participants received an information booklet and heard from expert speakers prior to deliberating on how to fairly implement epitope compatibility for transplant candidates and governance issues. Participants collectively generated and voted on recommendations. In the final session, kidney donation and allocation policymakers engaged with participants. Sessions were recorded and transcribed.

RESULTS

Thirty-two individuals participated and generated nine recommendations. There was consensus on adding epitope compatibility to the existing deceased donor kidney allocation criteria. However, participants recommended including safeguards/flexibility around this (e.g., mitigating declining health). They called for a transition period to epitope compatibility, including an ongoing comprehensive public education program. Participants unanimously recommended regular monitoring and public sharing of epitope-based transplant outcomes.

CONCLUSIONS

Participants supported adding epitope compatibility to kidney allocation criteria, but advised safeguards and flexibility around implementation. These recommendations provide guidance to policymakers about incorporating epitope-based deceased donor allocation criteria.