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1211 citation(s) found for "Báez-Díaz, Luis".

A glance into the future of anti-neutrophil cytoplasmic antibody-associated vasculitis
Moura, Marta Casal , Branco, Carolina , Martins-Martinho, Joana , Berti, Alvise , Nogueira, Estela , Ponte, Cristina , Casal Moura, Marta , Berti, Alvise , Ferraro, José Luís

Therapeutic Advances in Musculoskeletal Disease | November 4, 2022 | Volume: 14 | Issue: No issue available | Pages: No page available

10.1177/1759720x221125979 | PMID 36353270 Get It

In the past decade, unprecedented progress has been made in understanding the pathogenesis, diagnosis, assessment, and treatment of anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAVs). International collaborations and input from several fields (e.g. immunology, rheumatology, and nephrology) have been critical for analyzing demographics, disease manifestations, and outcomes in clinical research studies. Such efforts opened new avenues for generating novel questions and rationale to design better clinical trials. In addition, clinical research has been a source of several biological discoveries and the starting point for knowledge seeking on the pathophysiology of AAV. Interestingly, the blending of clinical and basic research provides a platform for personalized medicine. Despite recent revisions on AAV classification, the incorporation of new findings on disease genetics and immunologic responses may soon result in changes in clinical practice. These advances will enhance the selection of more specific and targeted therapies. However, current unmet needs in the management of AAV are still sizable and heavily impact long-term survival. Especially, frequent relapses, damage accrual, and high morbidity contribute to poor outcomes. Finally, the lack of defined biomarkers for disease activity and the prognosis is a permanent challenge in AAV research. Our work provides an overview of the current state of the art in AAV literature and suggests bridges for the remaining knowledge gaps. It offers potential future directions for the clinical assessment, management, and research in the field toward a more personalized medicine approach.
Natural Killer Cells Are Key Host Immune Effector Cells Affecting Survival in Autologous Peripheral Blood Hematopoietic Stem Cell Transplantation
Porrata, Luis F.

Cells | November 3, 2022 | Volume: 11 | Issue: 21 | Pages: 3469

10.3390/cells11213469 | PMID 36359863 Get It

The infusion of autograft immune effector cells directly impacts the clinical outcomes of patients treated with autologous peripheral blood hematopoietic stem cell transplantation, suggesting the possibility of an autologous graft-versus tumor cells. Furthermore, the early recovery of immune effector cells also affects survival post-autologous peripheral blood hematopoietic stem cell transplantation. Natural killer cells are among the immune effector cells reported to be collected, infused, and recovered early post-autologous peripheral blood hematopoietic stem cell transplantation. In this review, I attempt to give an update on the role of natural killer cells regarding improving survival outcomes on patients treated with autologous peripheral blood hematopoietic stem cell transplantation.
Transition to rilonacept monotherapy from oral therapies in patients with recurrent pericarditis
Brucato, Antonio , Wheeler, Alistair, Abbate, Antonio , Cremer, Paul , Zou, Liangxing, LeWinter, Martin M. , Lin, David , Pancrazi, Massimo, Paolini, John F. , Luis, Sushil Allen , Klein, Allan , Paolini, John F , Brucato, Antonio , Cremer, Paul C , Insalaco, Antonella , Lewis, Basil S. , Nicholls, Stephen J. , Klein, Allan L. , Imazio, Massimo

Heart | October 31, 2022 | Volume: 109 | Issue: 4 | Pages: 297-304

10.1136/heartjnl-2022-321328 | PMID 36316102 Get It

Objective Polypharmacy management of recurrent pericarditis (RP) often involves long-term therapies, often with negative effects. Slow tapering of oral therapies is often required to avoid recurrence. A post hoc analysis of the phase III trial Rilonacept inHibition of interleukin-1 Alpha and beta for recurrent Pericarditis: a pivotal Symptomatology and Outcomes Study (RHAPSODY) evaluated investigator approaches to transitioning to IL-1 blockade monotherapy with rilonacept, which was hypothesised to allow accelerated withdrawal of common multidrug pericarditis regimens. Methods RHAPSODY was a multicentre (Australia, Israel, Italy, USA), double-blind, placebo-controlled, randomised-withdrawal trial in adults and adolescents with RP. Investigators initiated rilonacept at the labelled dose level and discontinued oral pericarditis therapies during the 12-week run-in; randomised patients received study drug as monotherapy. Time to rilonacept monotherapy was quantified in patients receiving multidrug regimens at baseline who achieved rilonacept monotherapy during run-in. Results In 86 enrolled patients, mean time to rilonacept monotherapy was 7.9 weeks, with no recurrences. Of these, 64% (n=55) entered on multidrug regimens: non-steroidal anti-inflammatory drugs (NSAIDs) plus colchicine (44% (24/55)), colchicine plus glucocorticoids (24% (13/55)), or NSAIDs, colchicine, plus glucocorticoids (33% (18/55)). Investigators transitioned patients receiving colchicine and glucocorticoids at baseline to rilonacept monotherapy without recurrence regardless of taper approach: sequential (n=14; median, 7.7 weeks) or concurrent (n=17; median, 8.0 weeks). Median time to rilonacept monotherapy was similar regardless of glucocorticoid dose and duration: ≤15 mg/day (n=21): 7.3 weeks; >15 mg/day (n=18): 8.0 weeks; long-term (≥28 days): 7.6 weeks. Conclusions Rapid discontinuation of oral RP therapies while transitioning to rilonacept monotherapy was feasible without triggering pericarditis recurrence. Trial registration number NCT03737110.
Development of new postoperative neck pain at 12 and 24 months after surgery for cervical spondylotic myelopathy: a Quality Outcomes Database study
Sherrod, Brandon A. , Michalopoulos, Giorgos D. , Mulvaney, Graham , Agarwal, Nitin , Chan, Andrew K. , Asher, Anthony L. , Coric, Domagoj , Virk, Michael S. , Fu, Kai-Ming, Foley, Kevin T. , Park, Paul , Upadhyaya, Cheerag D., Knightly, John J. , Shaffrey, Mark E., Potts, Eric A. , Shaffrey, Christopher I. , Gottfried, Oren N., Than, Khoi D. , Wang, Michael Y. , Tumialán, Luis M. , Chou, Dean , Mummaneni, Praveen V. , Bydon, Mohamad , Bisson, Erica F. , Michalopoulos, Giorgos

Journal of Neurosurgery: Spine | October 28, 2022 | Volume: 38 | Issue: 3 | Pages: 357-365

10.3171/2022.9.spine22611 | PMID 36308471 Get It

OBJECTIVE Patients who undergo surgery for cervical spondylotic myelopathy (CSM) will occasionally develop postoperative neck pain that was not present preoperatively, yet the incidence of this phenomenon is unclear. The authors aimed to elucidate patient and surgical factors associated with new-onset sustained pain after CSM surgery. METHODS The authors reviewed data from the Quality Outcomes Database (QOD) CSM module. The presence of neck pain was defined using the neck pain numeric rating scale (NRS). Patients with no neck pain at baseline (neck NRS score ≤ 1) were then stratified based on the presence of new postoperative pain development (neck NRS score ≥ 2) at 12 and 24 months postoperatively. RESULTS Of 1141 patients in the CSM QOD, 224 (19.6%) reported no neck pain at baseline. Among 170 patients with no baseline neck pain and available 12-month follow-up, 46 (27.1%) reported new postoperative pain. Among 184 patients with no baseline neck pain and available 24-month follow-up, 53 (28.8%) reported new postoperative pain. The mean differences in neck NRS scores were 4.3 for those with new postoperative pain compared with those without at 12 months (4.4 ± 2.2 vs 0.1 ± 0.3, p < 0.001) and 3.9 at 24 months (4.1 ± 2.4 vs 0.2 ± 0.4, p < 0.001). The majority of patients reporting new-onset neck pain reported being satisfied with surgery, but their satisfaction was significantly lower compared with patients without pain at the 12-month (66.7% vs 94.3%, p < 0.001) and 24-month (65.4% vs 90.8%, p < 0.001) follow-ups. The baseline Neck Disability Index (NDI) was an independent predictor of new postoperative neck pain at both the 12-month and 24-month time points (adjusted OR [aOR] 1.04, 95% CI 1.01–1.06; p = 0.002; and aOR 1.03, 95% CI 1.01–1.05; p = 0.026, respectively). The total number of levels treated was associated with new-onset neck pain at 12 months (aOR 1.34, 95% CI 1.09–1.64; p = 0.005), and duration of symptoms more than 3 months was a predictor of 24-month neck pain (aOR 3.22, 95% CI 1.01–10.22; p = 0.048). CONCLUSIONS Increased NDI at baseline, number of levels treated surgically, and duration of symptoms longer than 3 months preoperatively correlate positively with the risk of new-onset neck pain following CSM surgery. The majority of patients with new-onset neck pain still report satisfaction from surgery, suggesting that the risk of new-onset neck pain should not hinder indicated operations from being performed.
Sequencing of Androgen-Deprivation Therapy of Short Duration With Radiotherapy for Nonmetastatic Prostate Cancer (SANDSTORM): A Pooled Analysis of 12 Randomized Trials
Martin, Ting , Sun, Yilun , Malone, Shawn , Roach, Mack , Dearnaley, David P. , Pisansky, Thomas M. , Feng, Felix Y. , Sandler, Howard M. , Efstathiou, Jason A. , Syndikus, Isabel , Hall, Emma , Tree, Alison , Sydes, Matthew R. , Cruickshank, Claire, Roy, Soumyajit , Bolla, M. , Reijke, Theo de, Nabid, Abdenour , Carrier, Nathalie , Souhami, Luís, Guerrero, A., Álvarez, A. , Segundo, Carmen González‐San , Maldonado, Xavier , Romero, Tahmineh , Steinberg, Michael L. , Valle, Luca , Nickols, Nicholas G. , Shoag, Jonathan E. , Reiter, Robert E. , Jia, Angela Y. , García, Jorge A. , Spratt, Daniel E. , Kishan, Amar U. , Ma, Ting Martin , Dearnaley, David , Hall, Emma C , Tree, Alison C , Bolla, Michel , Maingon, Philippe , Alvarez, Ana , Gonzalez San-Segundo, Carmen , Steinberg, Michael L , Valle, Luca F , Shoag, Jonathan E , Zaorsky, Nicholas G , Spratt, Daniel E , Kishan, Amar U , Sandler, Howard M , Efstathiou, Jason A , Zapatero, A. , Rettig, Matthew B. , Zaorsky, Nicholas G.

Journal of Clinical Oncology | October 21, 2022 | Volume: 41 | Issue: 4 | Pages: 881-892

10.1200/jco.22.00970 | PMID 36269935 Get It

PURPOSE The sequencing of androgen-deprivation therapy (ADT) with radiotherapy (RT) may affect outcomes for prostate cancer in an RT-field size-dependent manner. Herein, we investigate the impact of ADT sequencing for men receiving ADT with prostate-only RT (PORT) or whole-pelvis RT (WPRT). MATERIALS AND METHODS Individual patient data from 12 randomized trials that included patients receiving neoadjuvant/concurrent or concurrent/adjuvant short-term ADT (4-6 months) with RT for localized disease were obtained from the Meta-Analysis of Randomized trials in Cancer of the Prostate consortium. Inverse probability of treatment weighting (IPTW) was performed with propensity scores derived from age, initial prostate-specific antigen, Gleason score, T stage, RT dose, and mid-trial enrollment year. Metastasis-free survival (primary end point) and overall survival (OS) were assessed by IPTW-adjusted Cox regression models, analyzed independently for men receiving PORT versus WPRT. IPTW-adjusted Fine and Gray competing risk models were built to evaluate distant metastasis (DM) and prostate cancer–specific mortality. RESULTS Overall, 7,409 patients were included (6,325 neoadjuvant/concurrent and 1,084 concurrent/adjuvant) with a median follow-up of 10.2 years (interquartile range, 7.2-14.9 years). A significant interaction between ADT sequencing and RT field size was observed for all end points ( P interaction < .02 for all) except OS. With PORT (n = 4,355), compared with neoadjuvant/concurrent ADT, concurrent/adjuvant ADT was associated with improved metastasis-free survival (10-year benefit 8.0%, hazard ratio [HR], 0.65; 95% CI, 0.54 to 0.79; P < .0001), DM (subdistribution HR, 0.52; 95% CI, 0.33 to 0.82; P = .0046), prostate cancer–specific mortality (subdistribution HR, 0.30; 95% CI, 0.16 to 0.54; P < .0001), and OS (HR, 0.69; 95% CI, 0.57 to 0.83; P = .0001). However, in patients receiving WPRT (n = 3,049), no significant difference in any end point was observed in regard to ADT sequencing except for worse DM (HR, 1.57; 95% CI, 1.20 to 2.05; P = .0009) with concurrent/adjuvant ADT. CONCLUSION ADT sequencing exhibits a significant impact on clinical outcomes with a significant interaction with field size. Concurrent/adjuvant ADT should be the standard of care where short-term ADT is indicated in combination with PORT.
Up, up and away! Atrial septal pouch thrombus: an unexpected encounter during transeptal puncture
Ripoll, Juan G. , Padang, Ratnasari , Luis, Sushil Allen , Alkhouli, Mohamad

No container title available | October 17, 2022 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.22541/au.166601377.75405016/v1 Get It

Atrial septal pouch is a common anatomic variant of the interatrial septum and a nidus for thrombus formation. Left-sided atrial septal pouch has been associated with an increased risk of cryptogenic stroke. We described a case of left-sided atrial septal pouch thrombus, incidentally found prior to transseptal puncture during Watchman device placement. This case highlights the importance of a thorough echocardiographic evaluation of the atrial septum prior to transseptal access and recognition of this finding as a potential cardiac source of embolism.
Interleukin‐1 Trap Rilonacept Improved Health‐Related Quality of Life and Sleep in Patients With Recurrent Pericarditis: Results From the Phase 3 Clinical Trial RHAPSODY
Brucato, Antonio , Lim-Watson, Michelle , Klein, Allan L. , Imazio, Massimo , Cella, David , Cremer, Paul , LeWinter, Martin M. , Lin, David , Lotan, Dor , Pancrazi, Massimo, Trotta, Lucia , Klooster, Brittany , Litcher‐Kelly, Leighann , Zou, Liangxing, Magestro, Matt , Wheeler, Alistair, Paolini, John F. , Abbate, Antonio , Abo‐Auda, Wael, Akhtar, Asif, Arad, Michael , Baibhav, Bipul, Bhalla, Karan, Cross, David, Eisen, Alon , FREEDBERG, NAHUM A., Fuchs, Shmuel, Gaddam, Eliyazar, Gelfand, Eli V. , Grena, Paul, Halabi, Majdi , Harris, David C.H. , Karim, Amin H., Kontzias, Apostolos , Kornberg, Robert, Latif, Faisal , Leibowitz, David , Lotan, Dor, Lim-Watson, Michelle Z , Klein, Allan , Luis, Sushil A , Lotan, Dor , Klooster, Brittany , Litcher-Kelly, Leighann , Paolini, John F , Brucato, Antonio , Cremer, Paul C , Imazio, Massimo , Luis, Sushil Allen , Atar, Shaul , Collins, Sean P. , Colquhoun, David Martin , Dwivedi, Girish , Gattorno, Marco , Insalaco, Antonella , Karim, Amin, Knowlton, Kirk U. , Lotan, Dor

Journal of the American Heart Association | October 17, 2022 | Volume: 11 | Issue: 20 | Pages: No page available

10.1161/jaha.121.023252 | PMID 36250662 Get It

Background Recurrent pericarditis is characterized by painful flares and inflammation, which negatively impact health‐related quality of life. RHAPSODY (rilonacept inhibition of interleukin‐1 alpha and beta for recurrent pericarditis: a pivotal symptomatology and outcomes study) evaluated the efficacy and safety of rilonacept (IL‐1α and ‐β cytokine trap) in recurrent pericarditis. A secondary analysis of these data evaluated the patient‐reported outcome questionnaire score change during the trial. Methods and Results Participants completed 5 patient‐reported outcome (PRO) questionnaires assessing pericarditis pain, health‐related quality of life, general health status, sleep impact, and overall symptom severity. PRO score changes during the treatment run‐in period (12 weeks) and the blinded randomized withdrawal period (up to 24 weeks) were evaluated using descriptive statistics and mixed model repeated measures analyses. Participants with PRO data from the run‐in period (n=84) and the randomized withdrawal period (n=61; 30 rilonacept, 31 placebo) were included in analyses. Run‐in baseline PRO scores indicated that pericarditis symptoms during pericarditis recurrence impacted health‐related quality of life. All PRO scores significantly improved ( P <0.001) on rilonacept treatment during the run‐in period. For the randomized withdrawal period, PRO scores were maintained for participants receiving rilonacept. For those receiving placebo and who experienced a recurrence, PRO scores deteriorated at the time of recurrence and then improved following rilonacept bailout. At randomized withdrawal Week 24/End of Study, scores of participants who received bailout rilonacept were similar to those of participants who had continued rilonacept. Conclusions These results demonstrate the burden of pericarditis recurrences and the improved physical and emotional health of patients with recurrent pericarditis while on rilonacept treatment. These findings extend prior rilonacept efficacy results, demonstrating improvements in patient‐reported health‐related quality of life, sleep, pain, and global symptom severity while on treatment. Registration URL: https://www.clinicaltrials.gov ; Unique identifier: NCT03737110.
The use of warfarin as part of antithrombotic strategy after transcutaneous aortic valve replacement is not associated with better medium-term outcomes
Gochanour, Benjamin R. , Greason, Kevin L. , Gulati, R, Eleid, Mackram F. , Nkomo, V T, Pislaru, S V, Naser, Jwan A. , Scott, Christopher G. , Luis, Sushil Allen , Crestanello, Juan A.

European Heart Journal | October 15, 2022 | Volume: 43 | Issue: Supplement_2 | Pages: No page available

10.1093/eurheartj/ehac544.2705 Get It

Abstract Background Bioprosthetic valve thrombosis is currently a well-recognized cause of bioprosthetic valve dysfunction. It was found to be associated with accelerated degeneration of the bioprosthesis with higher rates of valve re-replacement, even after treatment with anticoagulation. We hypothesized that the use of warfarin for three months after transcatheter aortic valve replacement (TAVR) protects against accelerated valve degeneration and is therefore associated with better outcomes compared to dual antiplatelet therapy (DAPT). Methods Consecutive adult patients who underwent TAVR in our clinic between 2012 and 2019 were identified retrospectively. Patients with atrial fibrillation were excluded. Subsequently, patients who received DAPT were propensity matched to up to 2 patients who received three months of warfarin as part of their anti-thrombotic regimen. Matching was performed for variables that were significantly different at baseline between the two groups and included diabetes mellitus, prior myocardial infarctions, chronic lung disease, peripheral arterial disease, hemoglobin at time of TAVR, kidney function [creatinine&gt;2], use of angiotensin-converting enzyme inhibitors / angiotensin II receptor blockers, beta blockers, the Society of Thoracic Surgeons (STS) score [STS ≥8, STS 4–8, STS&lt;4], and valve size. The two groups were then compared for outcomes of ischemic stroke, death, valve re-replacement/intervention, the composite endpoint of the aforementioned three outcomes, as well as the three-month outcome of hemorrhagic strokes. Kaplan Meier was used for outcome analysis, and discharge date was considered time zero. Patients who had their anti-thrombotic therapy interrupted were censored at that time point. Results A total of 1,373 patients who underwent TAVR were identified. Of these, 576 patients with atrial fibrillation were excluded. Baseline characteristics were compared between 633 patients who received three months of warfarin and 164 patients who received DAPT after TAVR. After matching the two groups, 435 patients were included in the final analysis [warfarin in 281, DAPT in 154; median time to last follow up 2.61 years], Table 1. There was no difference in matched (Figure 1) or unmatched analysis (not shown) in outcomes of ischemic stroke, death, valve re-replacement/intervention, their composite endpoint, or hemorrhagic strokes (p&gt;0.05 for all). Conclusion Antithrombotic regimen including three months of warfarin after TAVR was not associated with better outcomes of ischemic strokes, deaths, and valve re-replacement/intervention or with increased risk of hemorrhagic strokes compared to DAPT. Funding Acknowledgement Type of funding sources: None.
Outcomes of dual antiplatelet therapy in combination with direct oral anticoagulants in patients with acute coronary syndrome: a meta-analysis
Quintero, L Diaz, Mata, A M, Espinoza, L D E Diaz, Fuentes, H F, Taf, A T, Quintero, Luis Diaz

European Heart Journal | October 15, 2022 | Volume: 43 | Issue: Supplement_2 | Pages: No page available

10.1093/eurheartj/ehac544.1379 Get It

Abstract Background Recent data showed that the use of direct oral anticoagulants (DOAC) in addition to dual antiplatelet therapy (DAPT) is associated with reduced risk of adverse cardiovascular (CV) outcomes in patients with acute coronary syndrome (ACS) with or without percutaneous coronary intervention (PCI), but It has also been associated with increased risk of bleeding. The data differs among different studies, thus, the CV outcomes associated with use of DOAC therapy plus DAPT are not fully understood. We conducted a meta-analysis to explore the CV and bleeding outcomes of DOAC therapy plus DAPT vs DAPT with or without placebo in patients with ACS Methods We conducted a literature search of studies exploring the use of DAPT plus DOAC therapy with focusing on bleeding and CV outcomes including myocardial infarction (MI), stroke, stent thrombosis, limb thrombosis and VTE using Ovid, Scopus, PubMed, Medline, and EBSCO databases from January 2010 to March 2020. We used the following terms for the literature search: (Aspirin AND Clopidogrel OR Prasugrel OR Ticagrelor) AND (Apixaban OR Rivaroxaban OR Edoxaban OR Dabigatran OR Betrixaban). The efficacy outcome was a composite of CV death, MI and stroke, and the safety outcome was major bleeding. Results 4857 articles were included. Only RCTs and RCTs post-hoc analysis, were included (N=3). We found no significant heterogeneity and lower odds of the efficacy outcome in DOAC plus DAPT (experimental arm) compared to DAPT plus placebo (Control arm), which were unchanged in both the fixed and random effect models (Odds Ratio [OR] 0.87, 95% Confidence Interval [CI]: 0.78–0.97, I2=0%). We found no significant heterogeneity and higher odds of the safety outcome in DOAC plus DAPT (experimental arm) compared to DAPT plus placebo (Control arm) (OR fixed model 3.27, 95% CI: 2.28–4.70; OR random model 3.18, 95% CI: 2.21–4.57; I2=0%). Conclusion DOAC therapy plus DAPT in patients with ACS with or without PCI was associated with a lower rate of CV death, MI and stroke when compared to DAPT alone or with placebo and also associated with significant increase in major bleeding Funding Acknowledgement Type of funding sources: None.
High-Dose Methotrexate in Patients With Lymphoma: Predictors of a Complicated Course
O'Donoghue, Darragh, Truong, Huong L. , Finnes, Heidi D. , May, Heather P. , Ansell, Stephen M. , Bennani, N. Nora , Habermann, Thomas M. , Inwards, David J. , Johnston, Patrick B. , Khurana, Arushi , Micallef, Ivana N. , Nowakowski, Grzegorz S. , Porrata, Luis F. , Thanarajasingam, Gita , Thompson, Carrie A. , O'Donoghue, Darragh F, Personett, Heather A. , Ansell, Stephen M , Bennani, N Nora , Habermann, Thomas , Micallef, Ivana N , Nowakowski, Grzegorz S , Paludo, Jonas , Thanarajasingam, Gita , Thompson, Carrie A , Villasboas, Jose Caetano , Wang, Yucai , Witzig, T.E. , Leung, Nelson , McDonald, Jennifer S. , Lin, Yi , Paludo, Jonas , Villasboas, José C. , Wang, Yucai , Witzig, Thomas E. , Leung, Nelson

JCO Oncology Practice | October 14, 2022 | Volume: 18 | Issue: 12 | Pages: e1908-e1917

10.1200/op.22.00182 | PMID 36240468 Get It

PURPOSE:High-dose methotrexate (HDMTX; > 500 mg/m2) is an important component of lymphoma therapy. Serum MTX monitoring at 48 hours is the standard approach to identify those at increased risk of developing MTX toxicity. Our aim was to characterize the incidence of complications and their association with MTX levels.METHODS:A retrospective review of our institutional electronic medical record was conducted to identify patients with lymphoma who received HDMTX between January 1, 2002, and December 31, 2018. We characterized the incidence of acute kidney injury (AKI), intensive care unit (ICU) admission, length of hospital stay (LOS), and 30-day mortality across 48-hour MTX levels. To establish an association between 48-hour MTX levels and the complications listed, we performed chi-square analysis for dichotomous variables and Kruskal-Wallis for nonparametric data. Receiver operator characteristic curve analysis was performed to identify the MTX level where AKI grade ≥ 2 was more likely. Multivariate logistic regression analysis was performed to identify risk factors for this MTX level.RESULTS:We identified 642 patients with 2,804 cycles of HDMTX. The incidence of AKI was 19.1% with AKI grade ≥ 2 making up 21% of cases. Rates of AKI, ICU admission, and 30-day mortality are associated with elevated 48-hour MTX levels. There was a significant increase in median LOS with elevated MTX levels ( P < .001). Receiver operator characteristic curve analysis for AKI grade ≥ 2 demonstrated a 48-hour MTX level threshold of 1.28 μmol/L. Multivariate logistic regression analysis revealed age, male sex, elevated body surface area, higher MTX dose, monotherapy, and first cycle as independent factors.CONCLUSION:Elevated MTX levels are associated with a significant increased rate of AKI, ICU admission, prolonged LOS, and 30-day mortality. Elevated 48-hour MTX levels, particularly > 1.28 μmol/L, should alert clinicians for complications and to initiate measures to reduce MTX levels.