HIV+ deceased donor referrals: A national survey of organ procurement organizations

Deceased Donors With HIV in the Era of the HOPE Act: Referrals and Procurement

Background

The HIV Organ Policy Equity Act legalizes organ procurement from donors with HIV (HIV D+). A prior survey of Organ Procurement Organizations (OPOs) estimated >2000 HIV D+ referrals/year; however, only 30-35 HIV D+/year have had organs procured. Given this gap, we sought to understand HIV D+ referrals and procurements in practice.

Methods

We prospectively collected data on all OPO-reported HIV D+ referrals, including reasons for nonprocurement. We evaluated trends and compared HIV D+ characteristics by procurement status using regression, chi-squared tests, and Wilcoxon rank-sum tests.

Results

From December 23, 2015 to May 31, 2021, there were 710 HIV D+ referrals from 49 OPOs, of which 171 (24%) had organs procured. HIV D+ referrals increased from 7 to 15 per month (P < 0.001), and the procurement rate increased from 10% to 39% (P < 0.001). Compared with HIV D+ without procurement, HIV D+ with procurement were younger (median age 36 versus 50 y), more commonly White (46% versus 36%), and more often had trauma-related deaths (29% versus 8%) (all P < 0.001). Nonprocurement was attributed to medical reasons in 63% of cases, of which 36% were AIDS-defining infections and 64% were HIV-unrelated, commonly due to organ failure (36%), high neurologic function (31%), and cancer (14%). Nonprocurement was attributed to nonmedical reasons in 26% of cases, commonly due to no authorization (42%), no waitlist candidates (21%), or no transplant center interest (20%).

Conclusions

In the early years of the HIV Organ Policy Equity Act, actual HIV D+ referrals were much lower than prior estimates; however, the numbers and procurement rates increased over time. Nonprocurement was attributed to both medical and nonmedical issues, and addressing these issues could increase organ availability.

Expanding Access to Organ Transplant for People Living With HIV: Can Policy Catch Up to Outcomes Data?

Advances in antiretroviral and immunosuppressive regimens have improved outcomes following solid organ transplantation in people living with HIV (PLWH). The HIV Organ Policy and Equity Act was conceived to reduce the discard of HIV-positive organs and improve access to transplant for PLWH. Nevertheless, PLWH continue to experience disproportionately low rates of transplant. This overview examines the hurdles to transplantation in PLWH with end-organ disease, the potential and realized impact of the HIV Organ Policy and Equity Act, and changes that could permit expanded access to organ transplant in this population.

Inequities in organ and tissue donation and transplantation for sexual orientation and gender identity diverse people: A scoping review

Sexual orientation and gender identity (SOGI) diverse populations experience discrimination in organ and tissue donation and transplantation (OTDT) systems globally. We assembled a multidisciplinary group of clinical experts as well as SOGI-diverse patient and public partners and conducted a scoping review including citations on the experiences of SOGI-diverse persons in OTDT systems globally to identify and explore the inequities that exist with regards to living and deceased OTDT. Using scoping review methods, we conducted a systematic literature search of relevant electronic databases from 1970-2021 including a grey literature search. We identified and screened 2402 references and included 87 unique publications. Two researchers independently coded data in included publications in duplicate. We conducted a best-fit framework synthesis paired with an inductive thematic analysis to identify synthesized benefits, harms, inequities, justification of inequities, recommendations to mitigate inequities, laws and regulations, as well as knowledge and implementation gaps regarding SOGI-diverse identities in OTDT systems. We identified numerous harms and inequities for SOGI-diverse populations in OTDT systems. There were no published benefits of SOGI-diverse identities in OTDT systems. We summarized recommendations for the promotion of equity for SOGI-diverse populations and identified gaps that can serve as targets for action moving forward.

National Landscape of Human Immunodeficiency Virus-Positive Deceased Organ Donors in the United States

BACKGROUND

Organ transplantation from donors with human immunodeficiency virus (HIV) to recipients with HIV (HIV D+/R+) presents risks of donor-derived infections. Understanding clinical, immunologic, and virologic characteristics of HIV-positive donors is critical for safety.

METHODS

We performed a prospective study of donors with HIV-positive and HIV false-positive (FP) test results within the HIV Organ Policy Equity (HOPE) Act in Action studies of HIV D+/R+ transplantation (ClinicalTrials.gov NCT02602262, NCT03500315, and NCT03734393). We compared clinical characteristics in HIV-positive versus FP donors. We measured CD4 T cells, HIV viral load (VL), drug resistance mutations (DRMs), coreceptor tropism, and serum antiretroviral therapy (ART) detection, using mass spectrometry in HIV-positive donors.

RESULTS

Between March 2016 and March 2020, 92 donors (58 HIV positive, 34 FP), representing 98.9% of all US HOPE donors during this period, donated 177 organs (131 kidneys and 46 livers). Each year the number of donors increased. The prevalence of hepatitis B (16% vs 0%), syphilis (16% vs 0%), and cytomegalovirus (CMV; 91% vs 58%) was higher in HIV-positive versus FP donors; the prevalences of hepatitis C viremia were similar (2% vs 6%). Most HIV-positive donors (71%) had a known HIV diagnosis, of whom 90% were prescribed ART and 68% had a VL <400 copies/mL. The median CD4 T-cell count (interquartile range) was 194/µL (77-331/µL), and the median CD4 T-cell percentage was 27.0% (16.8%-36.1%). Major HIV DRMs were detected in 42%, including nonnucleoside reverse-transcriptase inhibitors (33%), integrase strand transfer inhibitors (4%), and multiclass (13%). Serum ART was detected in 46% and matched ART by history.

CONCLUSION

The use of HIV-positive donor organs is increasing. HIV DRMs are common, yet resistance that would compromise integrase strand transfer inhibitor-based regimens is rare, which is reassuring regarding safety.

Science Over Stigma: Lessons and Future Direction of HIV-to-HIV Transplantation

PURPOSE OF REVIEW

The HIV Organ Policy Equity (HOPE) Act permits transplantation from donors-with-HIV to recipients-with-HIV (HIV D + /R +). We assess HOPE implementation, summarizing progress and challenges at clinical, legislative, and community levels.

RECENT FINDINGS

As of July 2021, there have been 300 kidney and 87 liver transplants within HOPE research studies in the USA. Early HIV D + /R + kidney transplant outcomes show excellent patient survival (100%) and graft survival (92%). The number of HOPE donors continues to grow annually but remains lower than projections. State-level policy restrictions are identified in 34 states; however, these do not seem to have impacted practice; 16 states have passed new legislation to facilitate HIV D + /R + transplantation. Stigma related to HIV and low donor registration rates pose additional barriers.

SUMMARY

Early outcomes of HOPE Act transplants are encouraging. Progress to reach full implementation and realize the full benefit of this innovation is ongoing.

Potential donor characteristics and decisions made by organ procurement organization staff: Results of a discrete choice experiment

Organ procurement organizations (OPOs) evaluate referrals for deceased organ donation in the United States. Efforts to expand the donor pool, such as the HIV organ policy equity (HOPE) Act that permits transplants from HIV-positive donors to HIV-positive recipients, can only succeed if OPOs pursue referrals. However, relatively little is known about how OPO staff evaluate referrals. To better understand this process, OPO staff completed a discrete choice experiment to quantify the relative importance of seven donor characteristics on the decision to pursue a theoretical donor. Relative importance was defined by Partworth utility using a hierarchical Bayesian conditional logit model. There were 51 respondents from 36 of 58 OPOs in the United States. Of the seven attributes, organ and tissue potential were the most influential, followed by age, type of death, HIV status, donor registration, and Hepatitis C status. To be preferred to an HIV-negative donor, an HIV-positive donor needed to have the potential to donate two additional organs. These data provide insight into the preferences of OPO referral staff and may help explain the lower than expected number of HIV-positive transplants performed since the passage of the HOPE Act.

A prospective multicenter pilot study of HIV-positive deceased donor to HIV-positive recipient kidney transplantation: HOPE in action

HIV-positive donor to HIV-positive recipient (HIV D+/R+) transplantation is permitted in the United States under the HIV Organ Policy Equity Act. To explore safety and the risk attributable to an HIV+ donor, we performed a prospective multicenter pilot study comparing HIV D+/R+ vs HIV-negative donor to HIV+ recipient (HIV D-/R+) kidney transplantation (KT). From 3/2016 to 7/2019 at 14 centers, there were 75 HIV+ KTs: 25 D+ and 50 D- (22 recipients from D- with false positive HIV tests). Median follow-up was 1.7 years. There were no deaths nor differences in 1-year graft survival (91% D+ vs 92% D-, P = .9), 1-year mean estimated glomerular filtration rate (63 mL/min D+ vs 57 mL/min D-, P = .31), HIV breakthrough (4% D+ vs 6% D-, P > .99), infectious hospitalizations (28% vs 26%, P = .85), or opportunistic infections (16% vs 12%, P = .72). One-year rejection was higher for D+ recipients (50% vs 29%, HR: 1.83, 95% CI 0.84-3.95, P = .13) but did not reach statistical significance; rejection was lower with lymphocyte-depleting induction (21% vs 44%, HR: 0.33, 95% CI 0.21-0.87, P = .03). In this multicenter pilot study directly comparing HIV D+/R+ with HIV D-/R+ KT, overall transplant and HIV outcomes were excellent; a trend toward higher rejection with D+ raises concerns that merit further investigation.

Increasing the Donor Pool: Organ Transplantation from Donors with HIV to Recipients with HIV

Implementation of the HIV Organ Policy Equity (HOPE) Act marks a new era in transplantation, allowing organ transplantation from HIV+ donors to HIV+ recipients (HIV D+/R+ transplantation). In this review, we discuss major milestones in HIV and transplantation which paved the way for this landmark policy change, including excellent outcomes in HIV D-/R+ recipient transplantation and success in the South African experience of HIV D+/R+ deceased donor kidney transplantation. Under the HOPE Act, from March 2016 to December 2018, there were 56 deceased donors, and 102 organs were transplanted (71 kidneys and 31 livers). In 2019, the first HIV D+/R+ living donor kidney transplants occurred. Reaching the full estimated potential of HIV+ donors will require overcoming challenges at the community, organ procurement organization, and transplant center levels. Multiple clinical trials are ongoing, which will provide clinical and scientific data to further extend the frontiers of knowledge in this field.

Transplanting Organs from Donors with HIV or Hepatitis C: The Viral Frontier

A wide gap between the increasing demand for organs and the limited supply leads to immeasurable loss of life each year. The organ shortage could be attenuated by donors with human immunodeficiency virus (HIV) or hepatitis C virus (HCV). The transplantation of organs from HIV+ deceased donors into HIV+ individuals (HIV D+ /R+) was initiated in South Africa in 2010; however, this practice was forbidden in the USA until the HIV Organ Policy Equity (HOPE) Act in 2013. HIV D+/R+ transplantation is now practiced in the USA as part of ongoing research studies, helping to reduce waiting times for all patients on the waitlist. The introduction of direct acting antivirals for HCV has revolutionized the utilization of donors with HCV for HCV-uninfected (HCV-) recipients. This is particularly relevant as the HCV donor pool has increased substantially in the context of the rise in deaths related to drug overdose from injection drug use. This article serves to review the current literature on using organs from donors with HIV or HCV.

Donor evaluation in the era of HIV-positive organ transplantation: The importance of the infectious diseases specialist

A 61-year-old female with well-controlled human immunodeficiency virus (HIV) and end-stage renal disease was on the kidney transplant waitlist awaiting an organ offer, including from HIV-positive donors through the HIV Organ Policy Equity (HOPE) Act. We present three different scenarios where HIV-positive donor offers were evaluated for this one recipient, discuss the donor evaluation process, explain where the infectious diseases provider fits in this scheme, and describe the challenges encountered by organ procurement organizations. This is the first case under the HOPE Act at our center where discovery of an HIV-specific issue led to a turndown of an organ offer.

ABO-Incompatible Living Donor Kidney Transplantation in a Human Immunodeficiency Virus-Positive Recipient From a Human Immunodeficiency Virus-Positive Donor: A Case Report

A human immunodeficiency virus (HIV) infection is no longer an absolute contraindication for solid organ transplantation, yet such a setting is still challenging and little explored because of general reservations and medical difficulties. We describe a 51-year-old man with end-stage renal failure due to polycystic kidney disease who underwent an ABO-incompatible kidney transplantation from his 49-year-old male partner. Early postoperative course revealed an episode of suspected acute rejection, which was successfully managed with a steroid pulse. Both donor and recipient continued to have an undetectable viral load after adjusting antiretroviral medication to renal function. To the best of our knowledge, this is the first report of a successful ABO-incompatible living donor kidney transplantation from an HIV-positive donor in an HIV-positive recipient, and this case seems to be a valuable approach with favorable results.

The future of HIV Organ Policy Equity Act is now: the state of HIV+ to HIV+ kidney transplantation in the United States

PURPOSE OF REVIEW

We report the current state of HIV+ to HIV+ kidney transplantation in the United States and remaining challenges in implementing this practice nationally.

RECENT FINDINGS

The HIV Organ Policy Equity (HOPE) Act, which was the first step in unlocking the potential of HIV+ organ donors, mandates clinical research on HIV+ to HIV+ transplantation. As of March 2019, there have been 57 HOPE donors, including both true and false positive HOPE donors resulting in more than 120 transplants.

SUMMARY

The HOPE Act, signed in 2013, reversed the federal ban on the transplantation of organs from HIV+ donors into HIV+ recipients. Ongoing national studies are exploring the safety, feasibility, and efficacy of both kidney and liver transplantation in this population. If successfully and fully implemented, HIV+ to HIV+ transplantation could attenuate the organ shortage for everyone waiting, resulting in a far-reaching public health impact.

Solid Organ Transplantation in HIV-Infected Recipients: History, Progress, and Frontiers

PURPOSE OF REVIEW

End-stage organ disease prevalence is increasing among HIV-infected (HIV+) individuals. Trial and registry data confirm that solid organ transplantation (SOT) is efficacious in this population. Optimizing access to transplant and decreasing complications represent active frontiers.

RECENT FINDINGS

HIV+ recipients historically experienced 2-4-fold higher rejection. Integrase strand transferase inhibitors (INSTIs) minimize drug interactions and may reduce rejection along with lymphodepleting induction immunosuppression. Hepatitis C virus (HCV) coinfection has been associated with inferior outcomes, yet direct-acting antivirals (DAAs) may mitigate this. Experience in South Africa and the US HIV Organ Policy Equity (HOPE) Act support HIV+ donor to HIV+ recipient (HIV D+/R+) transplantation. SOT is the optimal treatment for end-stage organ disease in HIV+ individuals. Recent advances include use of INSTIs and DAAs in transplant recipients; however, strategies to improve access to transplant are needed. HIV D+/R+ transplantation is under investigation and may improve access and provide insights for HIV cure and pathogenesis research.

Organs from deceased donors with false-positive HIV screening tests: An unexpected benefit of the HOPE act

Organs from deceased donors with suspected false-positive HIV screening tests were generally discarded due to the chance that the test was truly positive. However, the HIV Organ Policy Equity (HOPE) Act now facilitates use of such organs for transplantation to HIV-infected (HIV+) individuals. In the HOPE in Action trial, donors without a known HIV infection who unexpectedly tested positive for anti-HIV antibody (Ab) or HIV nucleic acid test (NAT) were classified as suspected false-positive donors. Between March 2016 and March 2018, 10 suspected false-positive donors had organs recovered for transplant for 21 HIV + recipients (14 single-kidney, 1 double-kidney, 5 liver, 1 simultaneous liver-kidney). Median donor age was 24 years; cause of death was trauma (n = 5), stroke (n = 4), and anoxia (n = 1); three donors were labeled Public Health Service increased infectious risk. Median kidney donor profile index was 30.5 (IQR 22-58). Eight donors were HIV Ab+/NAT-; two were HIV Ab-/NAT+. All 10 suspected false-positive donors were confirmed to be HIV-noninfected. Given the false-positive rates of approved assays used to screen > 20 000 deceased donors annually, we estimate 50-100 HIV false-positive donors per year. Organ transplantation from suspected HIV false-positive donors is an unexpected benefit of the HOPE Act that provides another novel organ source.

Knowledge, attitudes, and planned practice of HIV-positive to HIV-positive transplantation in US transplant centers

BACKGROUND

HIV+ donor organs can now be transplanted into HIV+ recipients (HIV D+/R+) following the HIV Organ Policy Equity (HOPE) Act. Implementation of the HOPE Act requires transplant center awareness and support of HIV D+/R+ transplants.

METHODS

To assess center-level barriers to implementation, we surveyed 209 transplant centers on knowledge, attitudes, and planned HIV D+/R+ protocols.

RESULTS

Responding centers (n = 114; 56%) represented all UNOS regions. Fifty centers (93 organ programs) planned HIV D+/R+ protocols (kidney n = 48, liver n = 34, pancreas n = 8, heart n = 2, lung = 1), primarily in the eastern United States (28/50). Most (91.2%) were aware that HIV D+/R+ transplantation is legal; 21.4% were unaware of research restrictions. Respondents generally agreed with HOPE research criteria except the required experience with ≥5 HIV+ transplants by organ type. Centers planning HIV D+/R+ protocols had higher transplant volume, HIV+ recipient volume, increased infectious risk donor utilization, and local HIV prevalence (P < 0.01). Centers not planning HIV D+/R+ protocols were more likely to believe their HIV+ candidates would not accept HIV+ donor organs (P < 0.001). Most centers (83.2%) supported HIV+ living donation.

CONCLUSIONS

Although many programs plan HIV D+/R+ transplantation, center-level barriers remain including geographic clustering of kidney/liver programs and concerns about HIV+ candidate willingness to accept HIV+ donor organs.