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  • Gao S
  • Huang X
  • Zhou X
  • Dai X
  • Han J
  • et al.
Ann Med. 2024 Dec;56(1):2314236 doi: 10.1080/07853890.2024.2314236.
BACKGROUND:

The burden of carbapenem-resistant gram-negative bacteria (CRGNB) among solid organ transplant (SOT) recipients has not been systematically explored. Here, we discern the risk factors associated with CRGNB infection and colonization in SOT recipients.

METHODS:

This study included observational studies conducted among CRGNB-infected SOT patients, which reported risk factors associated with mortality, infection or colonization. Relevant records will be searched in PubMed, Embase and Web of Science for the period from the time of database construction to 1 March 2023.

RESULTS:

A total of 23 studies with 13,511 participants were included, enabling the assessment of 27 potential risk factors. The pooled prevalence of 1-year mortality among SOT recipients with CRGNB was 44.5%. Prolonged mechanical ventilation, combined transplantation, reoperation and pre-transplantation CRGNB colonization are salient contributors to the occurrence of CRGNB infections in SOT recipients. Renal replacement therapy, post-LT CRGNB colonization, pre-LT liver disease and model for end-stage liver disease score increased the risk of infection. Re-transplantation, carbapenem use before transplantation and ureteral stent utilization increaesd risk of CRGNB colonization.

CONCLUSION:

Our study demonstrated that SOT recipients with CRGNB infections had a higher mortality risk. Invasive procedure may be the main factor contribute to CRGNB infection.

  • Stier EA
  • Clarke MA
  • Deshmukh AA
  • Wentzensen N
  • Liu Y
  • et al.
Int J Cancer. 2024 May 15;154(10):1694-1702 doi: 10.1002/ijc.34850.

The International Anal Neoplasia Society (IANS) developed consensus guidelines to inform anal cancer screening use among various high-risk groups. Anal cancer incidence estimates by age among risk groups provided the basis to identify risk thresholds to recommend screening. Guided by risk thresholds, screening initiation at age 35 years was recommended for men who have sex with men (MSM) and transgender women (TW) with HIV. For other people with HIV and MSM and TW not with HIV, screening initiation at age 45 years was recommended. For solid organ transplant recipients, screening initiation beginning from 10 years post-transplant was recommended. For persons with a history of vulvar precancer or cancer, screening initiation was recommended starting within 1 year of diagnosis of vulvar precancer or cancer. Persons aged ≥45 years with a history of cervical/vaginal HSIL or cancer, perianal warts, persistent (>1 year) cervical HPV16, or autoimmune conditions could be considered for screening with shared decision-making, provided there is adequate capacity to perform diagnostic procedures (high-resolution anoscopy [HRA]). Anal cytology, high-risk (hr) human papillomavirus (HPV) testing (including genotyping for HPV16), and hrHPV-cytology co-testing are different strategies currently used for anal cancer screening that show acceptable performance. Thresholds for referral for HRA or follow-up screening tests are delineated. These recommendations from IANS provide the basis to inform management of abnormal screening results, considering currently available screening tools. These guidelines provide a pivotal foundation to help generate consensus among providers and inform the introduction and implementation of risk-targeted screening for anal cancer prevention.

  • Taneja V
  • Anand RS
  • El-Dallal M
  • Dong J
  • Desai N
  • et al.
Inflamm Bowel Dis. 2024 Apr 3;30(4):585-593 doi: 10.1093/ibd/izad108.
BACKGROUND:

Patients undergoing organ transplantation are often on immunosuppressing medications to prevent rejection of the transplant. The data on use of concomitant immunosuppression for inflammatory bowel disease (IBD) and organ transplant management are limited. This study sought to evaluate the safety of biologic and small molecule therapy for the treatment of IBD among solid organ transplant recipients.

METHODS:

Medline, Embase, and Web of Science databases were systematically searched for studies reporting on safety outcomes associated with the use of biologic and small molecule therapy (infliximab, adalimumab, certolizumab, golimumab, vedolizumab, ustekinumab, and tofacitinib) in patients with IBD postsolid organ transplant (eg, liver, kidney, heart, lung, pancreas). The primary outcome was infectious complications. Secondary outcomes included serious infections, colectomy, and discontinuation of biologic therapy.

RESULTS:

Seven hundred ninety-seven articles were identified for screening, yielding 16 articles for the meta-analyses with information on 163 patients. Antitumor necrosis factor α (Anti-TNFs; infliximab and adalimumab) were used in 8 studies, vedolizumab in 6 studies, and a combination of ustekinumab or vedolizumab and anti-TNFs in 2 studies. Two studies reported outcomes after kidney and cardiac transplant respectively, whereas the rest of the studies included patients with liver transplants. The rates of all infections and serious infections were 20.09 per 100 person-years (100-PY; 95% CI, 12.23-32.99 per 100-PY, I2 = 54%) and 17.39 per 100-PY (95% CI, 11.73-25.78 per 100-PY, I2 = 21%), respectively. The rates of colectomy and biologic medication discontinuation were 12.62 per 100-PY (95% CI, 6.34-25.11 per 100-PY, I2 = 34%) and 19.68 per 100-PY (95% CI, 9.97-38.84 per 100-PY, I2 = 74%), respectively. No cases of venous thromboembolism or death attributable to biologic use were reported.

CONCLUSION:

Biologic therapy is overall well tolerated in patients with solid organ transplant. Long-term studies are needed to better define the role of specific agents in this patient population.

  • Schultz BG
  • Bullano M
  • Paratane D
  • Rajagopalan K
Transpl Infect Dis. 2024 Apr;26(2):e14216 doi: 10.1111/tid.14216.
CET Conclusion
Reviewer: Mr Keno Mentor, Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences University of Oxford
Conclusion: CMV infection which is refractory to standard treatment is a challenging clinical problem, resulting in patient morbidity and increased healthcare costs, mainly due to prolonged and repeat admissions. In the SOLSTICE trail, Maribavir was shown to be more effective than standard treatment protocols for refractory CMV infection in post-transplant patients. This post-hoc analysis of the SOLISTICE trial used trial data to calculate the reduction in healthcare costs that could be achieved by using Maribavir in this patient population. The analysis demonstrated a third to two thirds reduction in costs over an 8-week period when using Maribavir. Healthcare cost analyses are complex and subject to many assumptions, which the authors acknowledge introduces significant bias. However, the most striking omission from the analysis is the cost of the Maribavir treatment itself, which is significantly higher than standard therapy. With the additional limitation of a short duration of study, the reliability and applicability of the reported cost savings cannot be readily determined.
Aims: The aim of this study was to use the data from the randomised controlled trial, SOLSTICE, to estimate the cytomegalovirus (CMV) related health care resource utilization (HCRU) costs of maribavir (MBV) versus investigator-assigned therapy (IAT), among hematopoietic stem cell transplant (HSCT) and solid organ transplant (SOT) recipients.
Interventions: Participants in the SOLSTICE trial were randomised to either receive IAT or MBV therapy.
Participants: 352 patients that had either HSCT (40%) or SOT (60%).
Outcomes: The key outcomes were the cost of hospitalisation with IAT versus MBV therapy, and cost difference (i.e. cost savings) with MBV.
Follow Up: N/A
BACKGROUND:

Cytomegalovirus (CMV) infections among hematopoietic stem cell transplant (HSCT) and solid organ transplant (SOT) recipients impose a significant health care resource utilization (HCRU)-related economic burden. Maribavir (MBV), a novel anti-viral therapy (AVT), approved by the United States Food and Drug Administration for post-transplant CMV infections refractory (with/without resistance) to conventional AVTs has demonstrated lower hospital length of stay (LOS) versus investigator-assigned therapy (IAT; valgancilovir, ganciclovir, foscarnet, or cidofovir) in a phase 3 trial (SOLSTICE). This study estimated the HCRU costs of MBV versus IAT.

METHODS:

An economic model was developed to estimate HCRU costs for patients treated with MBV or IAT. Mean per-patient-per-year (PPPY) HCRU costs were calculated using (i) annualized mean hospital LOS in SOLSTICE, and (ii) CMV-related direct costs from published literature. Probabilistic sensitivity analysis with Monte-Carlo simulations assessed model robustness.

RESULTS:

Of 352 randomized patients receiving MBV (n = 235) or IAT (n = 117) for 8 weeks in SOLSTICE, 40% had HSCT and 60% had SOT. Mean overall PPPY HCRU costs of overall hospital-LOS were $67,205 (95% confidence interval [CI]: $33,767, $231,275) versus $145,501 (95% CI: $62,064, $589,505) for MBV and IAT groups, respectively. Mean PPPY ICU and non-ICU stay costs were: $32,231 (95% CI: $5,248, $184,524) versus $45,307 (95% CI: $3,957, $481,740) for MBV and IAT groups, and $82,237 (95% CI: $40,397, $156,945) MBV versus $228,329 (95% CI: $94,442, $517,476) for MBV and IAT groups, respectively. MBV demonstrated cost savings in over 99.99% of simulations.

CONCLUSIONS:

This analysis suggests that Mean PPPY HCRU costs were 29%-64% lower with MBV versus other-AVTs.

  • Li Y
  • Chen J
  • Tang Y
  • Lin T
  • Song T
Asian J Surg. 2024 Apr;47(4):1723-1733 doi: 10.1016/j.asjsur.2023.12.118.

The relationship between sarcopenia and prognosis in solid organ transplantation recipients (SOTr) remains unverified. We aimed to quantify the prevalence of pretransplant sarcopenia and its effect on patient and graft survival in SOTr. We used PubMed, EMBASE, Cochrane Library and Web of Science to search relevant studies published in English (from inception to December 31, 2021). Prospective and retrospective cohort studies that reported the prevalence of sarcopenia before transplant or the association between sarcopenia and clinical outcomes in SOTr were included. Primary outcomes were the prevalence of sarcopenia and its impact on patient and graft survival. Secondary outcomes included perioperative complications, acute rejection, length of hospital stay, length of intensive care unit stay (ICU LOS) and early readmission. Thirty-nine studies involving 5792 patients were included. Pooled prevalence of sarcopenia amongst SOTr candidates was 40 % (95 % confidence interval [CI]: 34%-47 % and I2 = 97 %). Sarcopenia was associated with increased risk of death (hazard ratio [HR] = 1.87, 95 % CI: 1.46-2.41 and I2 = 60 %), poor graft survival (HR = 1.71, 95 % CI: 1.16-2.54 and I2 = 57 %) and increased liver graft loss (HR = 1.43, 95 % CI: 1.03-1.99 and I2 = 38 %). Patients with sarcopenia demonstrated increased incidence of perioperative complications (risk ratio [RR] = 1.34, 95 % CI: 1.17-1.53 and I2 = 40 %), long ICU LOS (mean difference = 2.31 days, 95 % CI: 0.58-4.04 and I2 = 97 %) and decreased risk of acute rejection (RR = 0.61, 95 % CI: 0.42-0.89 and I2 = 0 %). In Conclusion, sarcopenia is prevalent in SOTr candidates and associated with death and graft loss. Identifying sarcopenia before transplantation and intervening may improve long-term outcomes.

  • Pennington KM
  • Martin MJ
  • Murad MH
  • Sanborn D
  • Saddoughi SA
  • et al.
Transplantation. 2024 Apr 1;108(4):970-984 doi: 10.1097/TP.0000000000004871.
BACKGROUND:

Invasive fungal infections are associated with high morbidity in solid organ transplant recipients. Risk factor modification may help with preventative efforts. The objective of this study was to identify risk factors for the development of fungal infections within the first year following solid organ transplant.

METHODS:

We searched for eligible articles through February 3, 2023. Studies published after January 1, 2001, that pertained to risk factors for development of invasive fungal infections in solid organ transplant were reviewed for inclusion. Of 3087 articles screened, 58 were included. Meta-analysis was conducted using a random-effects model to evaluate individual risk factors for the primary outcome of any invasive fungal infections and invasive candidiasis or invasive aspergillosis (when possible) within 1 y posttransplant.

RESULTS:

We found 3 variables with a high certainty of evidence and strong associations (relative effect estimate ≥ 2) to any early invasive fungal infections across all solid organ transplant groups: reoperation (odds ratio [OR], 2.92; confidence interval [CI], 1.79-4.75), posttransplant renal replacement therapy (OR, 2.91; CI, 1.87-4.51), and cytomegalovirus disease (OR, 2.97; CI, 1.78-4.94). Both posttransplant renal replacement therapy (OR, 3.36; CI, 1.78-6.34) and posttransplant cytomegalovirus disease (OR, 2.81; CI, 1.47-5.36) increased the odds of early posttransplant invasive aspergillosis. No individual variables could be pooled across groups for invasive candidiasis.

CONCLUSIONS:

Several common risk factors exist for the development of any invasive fungal infections in solid organ transplant recipients. Additional risk factors for invasive candidiasis and aspergillosis may be unique to the pathogen, transplanted organ, or both.

  • Turner EM
  • Cassidy AR
  • Rea KE
  • Smith-Paine JM
  • Wolfe KR
Child Neuropsychol. 2024 Apr;30(3):503-537 doi: 10.1080/09297049.2023.2221759.

The incidence of pediatric solid organ transplantation (SOT) has increased in recent decades due to medical and surgical advances as well as improvements in organ procurement. Survival rates for pediatric kidney, liver, and heart transplantation are above 85% but patients continue to experience complex healthcare needs over their lifetime. Long-term developmental and neuropsychological sequelae are becoming increasingly recognized in this population, although preliminary work is limited and deserves further attention. Neuropsychological weaknesses are often present prior to transplantation and may be related to underlying congenital conditions as well as downstream impact of the indicating organ dysfunction on the central nervous system. Neuropsychological difficulties pose risk for functional complications, including disruption to adaptive skill development, social-emotional functioning, quality of life, and transition to adulthood. The impact of cognitive dysfunction on health management activities (e.g., medication adherence, medical decision-making) is also an important consideration given these patients' lifelong medical needs. The primary aim of this paper is to provide preliminary guidelines and clinical strategies for assessment of neuropsychological outcomes across SOT populations for pediatric neuropsychologists and the multidisciplinary medical team, including detailing unique and shared etiologies and risk factors for impairment across organ types, and functional implications. Recommendations for clinical neuropsychological monitoring as well as multidisciplinary collaboration within pediatric SOT teams are also provided.

  • Barrow B
  • Diep GK
  • Berman ZP
  • Boczar D
  • Lee O
  • et al.
Plast Reconstr Surg. 2024 Apr 1;153(4):839-851 doi: 10.1097/PRS.0000000000010757.
BACKGROUND:

Of nearly 90 hand and 50 face transplant recipients, only five have received a cross-sex vascularized composite allotransplantation (CS-VCA). CS-VCA has the potential to expand the donor pool and has been proven anatomically feasible and ethically acceptable in previous studies. However, there is a lack of immunologic data. This study evaluated the immunologic feasibility of CS-VCA through analysis of the solid organ transplant literature, given the paucity of CS-VCA data. The authors hypothesize that rates of acute rejection (AR) and graft survival (GS) in CS versus same-sex (SS) solid organ transplantation are similar.

METHODS:

A systematic review and meta-analysis were performed. Studies comparing GS or AR episodes in CS and SS adult kidney (KT) and liver transplant (LT) populations were included. Odds ratios were calculated for overall GS and AR for all SS and CS transplant combinations [male-to-female (MTF), female-to-male, and overall].

RESULTS:

A total of 693 articles were initially identified with 25 included in the meta-analysis. No significant difference in GS was noted between SS-KT versus CS-KT [OR, 1.04 (95% CI, 1.00 to 1.07); P = 0.07), SS-KT versus MTF-KT [OR, 0.97 (95% CI, 0.90 to 1.04); P = 0.41), and SS-LT versus MTF-LT [OR, 0.95 (95% CI, 0.91 to 1.00); P = 0.05). No significant difference in AR was noted between SS-KT versus MTF-KT [OR, 0.99 (95% CI, 0.96 to 1.02); P = 0.57), SS-LT versus CS-LT [OR, 0.78 (95% CI, 0.53 to 1.16); P = 0.22], or SS-LT versus female-to-male LT [OR, 1.03 (95% CI, 0.95 to 1.12); P = 0.47]. For the remaining pairings, GS was significantly increased and AR was significantly decreased in the SS transplants.

CONCLUSIONS:

Published data suggest immunologic feasibility of CS-KT and CS-LT with the potential for generalization to the VCA population.

CLINICAL RELEVANCE STATEMENT:

In theory, CS-VCA could expand the potential donor pool, ultimately leading to decreased wait times for recipients and improve the likelihood of establishing a immunologically favorable donor-recipient match.

  • Quick BL
  • Chung M
  • Morrow E
  • Reynolds-Tylus T
J Health Commun. 2024 Mar 3;29(3):200-210 doi: 10.1080/10810730.2024.2313988.

Concerns related to bodily integrity, medical mistrust, superstition, and disgust with respect to organ transplantation remain commonly cited barriers among African American, Caucasian, and Hispanic non-donors. The current study examined two narrative strategies for mitigating these barriers by eliciting feelings of happiness or sadness. African American, Caucasian, and Hispanic non-donors (N = 576) were randomly assigned to a radio ad that communicated either a recipient narrative or a waiting list narrative. As expected, the recipient narrative elicited greater feelings of happiness whereas the waiting list narrative aroused greater feelings of sadness. Moderated mediation analyses revealed models in which happiness, not sadness, was the mediator, such that the narrative frame was associated with ad persuasiveness. Additionally, only medical mistrust interacted with happiness to predict ad persuasiveness The results are discussed with an emphasis on message design strategies to employ among reluctant adult African American, Caucasian, and Hispanic potential donors.

  • Huh K
  • Lee SO
  • Kim J
  • Lee SJ
  • Choe PG
  • et al.
Infect Chemother. 2024 Mar;56(1):101-121 doi: 10.3947/ic.2024.0016.

Cytomegalovirus (CMV) is the most important opportunistic viral pathogen in solid organ transplant (SOT) recipients. The Korean guideline for the prevention of CMV infection in SOT recipients was developed jointly by the Korean Society for Infectious Diseases and the Korean Society of Transplantation. CMV serostatus of both donors and recipients should be screened before transplantation to best assess the risk of CMV infection after SOT. Seronegative recipients receiving organs from seropositive donors face the highest risk, followed by seropositive recipients. Either antiviral prophylaxis or preemptive therapy can be used to prevent CMV infection. While both strategies have been demonstrated to prevent CMV infection post-transplant, each has its own advantages and disadvantages. CMV serostatus, transplant organ, other risk factors, and practical issues should be considered for the selection of preventive measures. There is no universal viral load threshold to guide treatment in preemptive therapy. Each institution should define and validate its own threshold. Valganciclovir is the favored agent for both prophylaxis and preemptive therapy. The evaluation of CMV-specific cell-mediated immunity and the monitoring of viral load kinetics are gaining interest, but there was insufficient evidence to issue recommendations. Specific considerations on pediatric transplant recipients are included.