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253 citation(s) found for "Kamath, P S".

Neuropsychiatric symptoms cluster and fluctuate over time in behavioral variant frontotemporal dementia
Morrow, Christopher B. , Eldaief, Mark C. , Rezaii, Neguine, Wong, Bonnie , McGinnis, Scott, Darby, Ryan, Staffaroni, Adam M. , Pascual, Belén , Masdeu, Joseph C. , Tsapkini, Kyrana , Huey, Edward D. , Fisher, Daniel , Balaji, Akshata, Sah, Eric , Rascovsky, Katya, Ghoshal, Nupur , Domoto‐Reilly, Kimiko , Kornak, John , Onyike, Chiadi U. , Huang, Eric J. , Yokoyama, Jennifer S. , Paulson, Henry L. , Wong, Bonnie , Damme, Philip Van , Barmada, Sami J. , Rezaii, Neguine , Sah, Eric , Paulson, Henry L , Van Damme, Philip , Pascual, Belen , Yokoyama, Jennifer , Domoto-Reilly, Kimiko , Barmada, Sami , Morrow, Christopher , Kamath, Vidyulata , Dickerson, Bradford Clark , Lapid, Maria I. , Rojas, Julio C., Masdeu, Joseph C , Pantelyat, Alexander , Balaji, Akshata, Litvan, Irene

Psychiatry and Clinical Neurosciences | March 13, 2025 | Volume: 79 | Issue: 6 | Pages: 327-335

10.1111/pcn.13810 | PMID 40079430 Get It

Aim Cognitive and behavioral phenomena define behavioral variant frontotemporal dementia (bvFTD), but neuropsychiatric symptoms (NPS) outside the core criteria are common throughout the illness. Identifying how NPS cluster in bvFTD may guide development of future therapies. Methods Participants ( n = 354) with sporadic and genetic bvFTD were enrolled in the ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration Consortium. Dementia stage was defined as early (CDR® plus NACC FTLD ≤1) or advanced (CDR® plus NACC FTLD ≥1). Baseline and annual follow‐up visit data were analyzed to compare NPS across stages of bvFTD. Psychiatric states were captured using the Neuropsychiatric Inventory‐Questionnaire and Clinician Judgment of Symptoms. Polychoric cluster analysis was used to describe NPS clusters. Results NPS were highly prevalent (≥90%) in early and late bvFTD. Four NPS clusters were identified based on magnitude of factor loadings: affective, disinhibited, compulsive, and psychosis. Neuropsychiatric symptoms fluctuated across visits. In the affective cluster, depression showed the least visit‐to‐visit stability. In the disinhibited cluster, elation showed the least stability. Symptoms in the psychosis and compulsive clusters (hallucinations, delusions, obsessions/compulsions, and hyperorality) were largely stable, persisting from visit‐to‐visit in more than 50% of cases. Symptoms in the affective and disinhibited cluster were associated with the highest caregiver burden, while symptoms in the obsessive cluster were associated with the most functional impairment. Conclusion NPS in bvFTD are frequent and cluster into four discrete groups. The fluctuating nature of some NPS in bvFTD suggests that they may not be reliable markers of disease progression or stage.
AI-driven synthetic data generation for accelerating hepatology research: A study of the United Network for Organ Sharing (UNOS) database
Ahn, Joseph , Noh, Yung‐Kyun , Hu, Mingzhao , Shen, Xiaotong , Kamath, Patrick S. , Shah, Vijay H. , Ahn, Joseph C , Simonetto, Douglas A , Kamath, Patrick S , Loomba, Rohit , Simonetto, Douglas A.

Hepatology | March 11, 2025 | Volume: 83 | Issue: 2 | Pages: 304-316

10.1097/hep.0000000000001299 | PMID 40067682 Get It

Background and Aims: Clinical hepatology research often faces limited data availability, underrepresentation of minority groups, and complex data-sharing regulations. Synthetic data—artificially generated patient records designed to mirror real-world distributions—offers a potential solution. We hypothesized that diffusion models, a state-of-the-art generative technique, could produce synthetic liver transplant waitlist data from the United Network for Organ Sharing database that maintains statistical fidelity, replicates clinical correlations and survival patterns, and ensures robust privacy protection. Approach and Results: Diffusion models were used to generate synthetic patient cohorts mirroring the United Network for Organ Sharing liver transplant waitlist database between the years 2019 and 2023. Statistical fidelity was assessed using maximum mean discrepancy (MMD) and Wasserstein distance, correlation analysis, and variable-level metrics. Clinical utility was evaluated by comparing transplant-free survival via Kaplan–Meier curves and the MELD score performance. Privacy was quantified using the Distance to Closest Record (DCR) and attribute disclosure risk assessments. The synthetic dataset was nearly indistinguishable from the original dataset (MMD=0.002, standardized Wasserstein distance <1.0), preserving clinically relevant correlations and survival patterns as evidenced by similar median survival times (110 vs. 101 days) and 5-year survival rates (22.2% vs. 22.8%). MELD-based 90-day mortality prediction was maintained (original AUC=0.839 vs. synthetic AUC=0.844). Privacy metrics indicated no identifiable patient matches, and mean DCR values ensured that synthetic individuals were not direct replicas of real patients. Conclusion: Artificial intelligence–generated synthetic data derived from diffusion models can faithfully replicate complex hepatology datasets, maintain key clinical signals, and ensure strong privacy safeguards. This approach can help address data scarcity, enhance model generalizability, foster multi-institutional collaboration, and accelerate progress in hepatology research.
Comparison Between Dynamic Models for Predicting Response to Corticosteroids in Alcohol‐Associated Hepatitis: A Global Cohort Study
Idalsoaga, Francisco , Díaz, Luis Antonio , Guizzetti, Leonardo , Dunn, Winston , Arnold, Jorge , Ayares, Gustavo , Mortuza, Rokhsana , Mahli, Gurpreet, Islam, Alvi H. , Maiwall, Rakhi , Qian, Steve , Elfeki, Mohamed A. , Ramírez, Carolina , Higuera‐de‐la‐Tijera, Fátima , Al‐Karaghouli, Mustafa , Jalal, Prasun K. , Ibrahim, Mohamad Ali , García‐Tsao, Guadalupe , Havaj, Daniel Ján , Sulejova, Karolina, Shah, Vijay H. , Kamath, Patrick S. , Mehta, Heer , Arnold, Jorge , Ayares, Gustavo , Mortuza, Rokhsana , Sarin, Shiv Kumar , Maiwall, Rakhi , Qian, Steve , Simonetto, Douglas A , Singal, Ashwani K , Elfeki, Mohamed A , Ramirez-Cadiz, Carolina , Cabezas, Joaquín , Ventura Cots, Meritxell , Higuera-De La Tijera, Fatima , Abraldes, Juan G , Jalal, Prasun K , García-Tsao, Guadalupe , Skladaný, Lubomir , Havaj, Daniel J , Kamath, Patrick S , Arrese, Marco , Bataller, Ramon A , Arab, Juan P , Guizzetti, L , Díaz, Luis A , Dunn, Winston , Echavaría, Victor , Zhang, Wei , Simonetto, Douglas A. , Singal, Ashwani K. , Cabezas, Joaquín , Ventura‐Cots, Meritxell , Abraldeṣ, Juan G. , García–Tsao, Guadalupe , Goyes, Daniela , Selčanová, Světlana Adamcová , Rincón, Diego , Arrese, Marco , Arab, Juan Pablo

Alimentary Pharmacology & Therapeutics | February 19, 2025 | Volume: 61 | Issue: 8 | Pages: 1391-1395

10.1111/apt.70024 | PMID 39967231 Get It

ABSTRACTSeveral dynamic models predict mortality and corticosteroid response in alcohol‐associated hepatitis (AH), yet no consensus exists on the most effective model. This study aimed to assess predictive models for corticosteroid response and short‐term mortality in severe AH within a global cohort. We conducted a multi‐national study of patients with severe AH treated with corticosteroids for at least 7 days, enrolled between 2009 and 2019. Dynamic models—Lille‐4, Lille‐7, trajectory of serum bilirubin (TSB), and neutrophil‐to‐lymphocyte ratio (NLR)—were used to estimate 30‐ and 90‐day mortality. Lille‐7 demonstrated the highest accuracy for both 30‐ and 90‐day mortality.
Simvastatin and Rifaximin in Decompensated Cirrhosis
Pose, Elisa , Jiménez, César , Zaccherini, Giacomo , Campion, Daniela , Wit, Koos de , Gananandan, Kohilan , Laleman, Wim , López, Sonia Alonso , Cuyàs, Berta , Ariza, Xavier , T., Ann , Napoleone, Laura , Gratacós‐Ginès, Jordi , Tonon, Marta , Pompili, Enrico , Sánchez‐Delgado, Jordi , Allegretti, Andrew S. , Carol, Marta, Pich, Judit, Martell, Claudia, Joyera, María, Domènech, Gemma, Ríos, José , Torres, Ferràn , Serra‐Burriel, Miquel , Graupera, Isabel , Bañares, Rafael, Beuers, Ulrich , Angeli, Paolo, Alessandria, Carlo , Kamath, Patrick S. , Vargas, Vı́ctor , Ma, Ann T , de Wit, Koos , Vargas, Victor , Jiménez, César , Cuyas, Berta , Torres, Ferran , Piano, Salvatore , Uschner, Frank Erhard , Roux, Olivier , Solé, Cristina , Juanola, Adrià , Morales‐Ruiz, Manuel , Pérez, Martina , Fabrellas, Núria , Joyera, Maria, Hernaez, Ruben , Solà, Elsa , Watson, Hugh R , Soriano, German , Bañares, Rafael , Mookerjee, Rajeshwar P. , Francoz, Claire , Trebicka, Jonel , Angeli, Paolo , Caraceni, Paolo , Vargas, Víctor M., Abraldeṣ, Juan G. , Ginès, Pere

JAMA | February 5, 2025 | Volume: 333 | Issue: 10 | Pages: 864

10.1001/jama.2024.27441 | PMID 39908052 Get It

ImportanceThere are no useful treatments to prevent the development of severe complications of liver cirrhosis. Simvastatin and rifaximin have shown beneficial effects in liver cirrhosis.ObjectiveTo assess whether simvastatin combined with rifaximin improves outcomes in patients with decompensated cirrhosis.Design, Setting, and ParticipantsDouble-blind, placebo-controlled, phase 3 trial conducted among patients with decompensated cirrhosis in 14 European hospitals between January 2019 and December 2022. The last date of follow-up was December 2022.InterventionsPatients were randomly assigned to receive simvastatin, 20 mg/d, plus rifaximin, 1200 mg/d (n = 117), or identical-appearing placebo (n = 120) for 12 months in addition to standard therapy, stratified according to Child-Pugh class B or C.Main Outcomes and MeasuresThe primary end point was incidence of severe complications of liver cirrhosis associated with organ failure meeting criteria for acute-on-chronic liver failure. Secondary outcomes included transplant or death and a composite end point of complications of cirrhosis (ascites, hepatic encephalopathy, variceal bleeding, acute kidney injury, and infection).ResultsAmong the 237 participants randomized (Child-Pugh class B: n = 194; Child-Pugh class C: n = 43), 72% were male and the mean age was 57 years. There were no differences between the 2 groups in terms of development of acute-on-chronic liver failure (21 [17.9%] vs 17 [14.2%] patients in the treatment and placebo groups, respectively; hazard ratio, 1.23; 95% CI, 0.65-2.34; P = .52); transplant or death (22 [18.8%] vs 29 [24.2%] patients in the treatment and placebo groups, respectively; hazard ratio, 0.75; 95% CI, 0.43-1.32; P = .32); or development of complications of cirrhosis (50 [42.7%] vs 55 [45.8%] patients in the treatment and placebo groups, respectively; hazard ratio, 0.93; 95% CI, 0.63-1.36; P = .70). Incidence of adverse events was similar in both groups (426 vs 419; P = .59), but 3 patients in the treatment group (2.6%) developed rhabdomyolysis.Conclusions and RelevanceThe addition of simvastatin plus rifaximin to standard therapy does not improve outcomes in patients with decompensated liver cirrhosis.Trial RegistrationClinicalTrials.gov Identifier: NCT03780673
The Effects of Alfapump on Ascites Control and Quality of Life in Patients With Cirrhosis and Recurrent or Refractory Ascites
Wong, Florence , Vagas, Hugo E., Reddy, K. Rajender , Pagadala, Mangesh, Pocha, Christine , Bajaj, Jasmohan S. , Shlomovitz, Eran , Bendel, Emily C. , Capel, Jeroen , Kamath, Patrick S. , Group, The POSEIDON Study, Bajaj, Jasmohan S , Shlomovitz, Eran , Bendel, Emily , Capel, Jeroen , Kamath, Patrick S , Wong, Florence , Sundaram, Vinay , Group, The POSEIDON Study

American Journal of Gastroenterology | January 6, 2025 | Volume: 120 | Issue: 10 | Pages: 2291-2301

10.14309/ajg.0000000000003300 | PMID 39760647 Get It

INTRODUCTION: The alfapump system has been shown to be a possible alternative to repeat therapeutic paracentesis (TP) in selected patients with refractory ascites (RA). The objective of this study was to assess the safety and efficacy of alfapump on ascites control and quality of life in these patients. METHODS: Patients with cirrhosis and RA requiring ≥2 TPs 30 days prior were enrolled and followed for 24 months postimplant. Primary efficacy end point assessed at 6 months was reduction in paracentesis requirement; safety end point was device-related adverse events resulting in intervention, explant, or death. RESULTS: Forty patients with RA (mean Model of End-stage Liver Disease-Sodium: 15 ± 4) received an alfapump. TP requirement was decreased from 3.2 ± 1.5 sessions per month preimplant to 0.2 ± 0.6 sessions per month at 6 months postimplant ( P < 0.001), with 77% of patients having ≥50% reduction. Six pumps (15%) were explanted within 6 months due to device-related adverse events, 3 (7.5%) due to pump site skin erosion, and 3 (7.5%) due to bladder discomfort. Twenty-four renal events occurred in the 0–6 month postimplant period; 16 cases were readily reversible stage 1 acute kidney injury. Ascites-related symptoms assessed with an Ascites Q score improved from 51.0 ± 19.3 preimplant to 32.2 ± 21.9 at 6 months postimplant ( P < 0.001). Physical but not mental components of Short Form 36 improved ( P < 0.001). The 5 deaths within 6 months postimplant were not directly related to the device or alfapump therapy. DISCUSSION: The alfapump system effectively controlled ascites, which improved quality of life. It may be considered as an alternative to repeat TP in select patients with RA. Complication rates were similar to those expected in patients with RA.
Natural History and Predictors of Survival in Adult Patients with Telomere Biology Disorders
Quattrocchi, Enrica , Porquera, Eva M. Carmona, Vergara, Alejandro Diaz Arumir, Zamora, Ana, Ongie, Laura , Burnap, Brittany, Kamath, Patrick S. , Joshi, Avni Y. , Wylam, Mark E. , Kennedy, Cassie C. , Finke, Christy M. , Simon, Rachel A, Patnaik, Mrinal M. , Ferrer, Alejandro, Mangaonkar, Abhishek A. , Kennedy, Cassie C , Vergara, Alejandro Diaz Arumir, McCullough, Kristen , Fernandez, Jenna , Simonetto, Douglas A. , Lasho, Terra L. , Ferrer, Alejandro

Blood | December 6, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 1326-1326

10.1182/blood-2024-210391 Get It

Introduction: Telomere biology disorders (TBD) are multisystemic accelerated aging syndromes due to abnormal telomere length (TL) shortening and increased cancer risk. Pediatric-onset TBD is characterized by severely shortened TL and specific associations with germline pathogenic variants mainly in DKC1, TINF2, PARN genes and characteristic clinical features [bone marrow failure (BMF), abnormal nail/skin/oral mucosa]. Adult-onset TBD is genetically distinct (predominantly, TERT, TERC, and RTEL1 mutations) with varied organ involvement [interstitial lung disease (ILD), BMF, cirrhosis, or bone disease] and heterogenous outcomes. In our previous study of predominantly adult patients with short telomeres, multiple organ involvement (Mangaonkar A et al. Blood Cancer J 2021) predicted poor overall survival (OS). We sought to validate these findings in a larger, well annotated adult cohort of TBD patients. Methods: Patients with suspected TBD underwent comprehensive clinical and molecular evaluation through our TBD-dedicated clinic after regulatory approval. TL was assessed through clinical flow cytometry fluorescence in-situ hybridization (FlowFISH).Clinical and laboratory features, including pulmonary imaging, lung volumes/function testing, hepatic imaging (MR elastography/fibroscan) and bone density assessments were retrospectively abstracted. Germline and somatic genetic testing was performed on peripheral blood through targeted panels for known TBD and myeloid genes respectively. Cox proportional hazard model was used to identify significant variables that also retained independent prognostic impact. Results: Overall, 122 patients met criteria for TBD as defined by lymphocyte TL (LTL) &lt;=10th percentile and/or a presence of a germline-TBD variant; 34 patients LTL &lt;1st percentile, 84 1st and the 10th percentile (27 with TBD-germline variants) and 4 with only TBD-germline variants. Median age at diagnosis was 56 (18-77) years, with 72 (59%) males. Clinical features included presence of ILD (n=81, 66%), BMF (n=39, 32%), cirrhosis/hepatic fibrosis (n=19, 38%), bone disease osteopenia/osteoporosis/fractures, n=53, 70%), MDS/AML (n=11, 9%), non-hematological cancer (n=38, 31%), and head and neck cancer (n=2). Germline pathogenic variants were detected in 22 (18%), most frequently in TERT (n=10), RTEL1 (n=7) and TERC (n=2), while variants of uncertain significance (VUS) were seen in 35 (29%) patients, especially in TERT (n=20), TERC/RTEL1(n=6), NAF1 (n=4). Somatic variants in hematopoietic cells were detected in 37 (30%) patients with frequent alterations seen in DNA damage response and repair (PPM1D/TP53, n=11), and splicing component (U2AF1/SF3B1/ZRSR2, n=9) genes. At last follow-up [median of 3 (0-18) years], there were 26 (21%) deaths (most commonly, progressive ILD-18, cancer of lung/breast/pancreas-3, transplant-related complications-2). After censoring patients at the time of any transplantation (lung transplant-26, liver transplant-5, bone marrow transplant-8), the Kaplan-Meier estimate of median OS was not reached. Univariate survival analysis found adverse OS predicted by older age at diagnosis (P=0.006), presence of ILD (P=0.0002), hepatic fibrosis/cirrhosis (P=0.02), and somatic DNA repair variants (P=0.03). Multivariate model analysis found that only presence of ILD retained independent prognostic impact (HR=2, P=0.02). Among radiographic ILD subtypes, UIP was the most common (51%), followed by NSIP (10%), and others (6%), with median FEV1 of 2L (range: 0.5-4.6), FVC 2.4L (0.7-6.2), and TLC 4L (1.9-7.4). TBD-ILD patients were older (P&lt;0.0001) with a male preponderance (P=0.03), 52 (64%) with multi-organ involvement, and had a less severe hematological phenotype [lower incidence of BMF (P&lt;0.0001) and fetal hemoglobin elevation (P=0.01)], more frequent bone disease (P=0.0009), relatively longer telomeres in lymphocytes (P=0.04), and no particular association with any germline or somatic genetic alterations. Conclusions: Presence of ILD is an independent and significant predictor of adverse survival in adult TBD. Within adult TBD, patients with ILD represent a unique clinical subtype without any obvious genetic or pathologic correlates. Focusing on definitive therapeutic measures in this subgroup of adult TBD has the best chance to alter natural history and improve outcomes.
Sex Differences in Patient-Reported Outcomes and Perception of Ascites Burden Among Outpatients With Decompensated Cirrhosis and Ascites
Wong, Florence , Reddy, K. Rajender , Tandon, Puneeta , Lai, Jennifer C. , García‐Tsao, Guadalupe , O'leary, Jacqueline, Biggins, Scott W. , Vargas, Hugo E. , Thacker, Leroy R. , Kamath, Patrick S. , Bajaj, Jasmohan S. , Group, The NACSELD III Study, O'Leary, Jacqueline G , Thacker, Leroy R , Tandon, Puneeta , Wong, Florence , Lai, Jennifer , Vargas, Hugo E , García–Tsao, Guadalupe , Group, The NACSELD III Study

American Journal of Gastroenterology | November 27, 2024 | Volume: 120 | Issue: 8 | Pages: 1791-1799

10.14309/ajg.0000000000003251 | PMID 39601412 Get It

INTRODUCTION: Perception of the ascites burden and its effects on quality of life may be different between sexes. This study assessed sex differences in perception of ascites burden and its impact on health-related quality of life (HRQoL) in patients with recurrent or refractory ascites. METHODS: The North American Consortium for the Study of End-stage Liver Disease prospectively enrolled outpatients with cirrhosis and large ascites requiring repeat large volume paracenteses. Demographics, laboratory results, comorbidities, medications, frailty measurements, and self-reported questionnaires related to functional status, physical activities, and HRQoL (generic = Short Form 36 and ascites specific = Ascites Questionnaire) were compared between sexes. RESULTS: In total, 392 men (59.6 ± 10.7 years) and 184 women (59.5 ± 11.1 years) with predominantly alcohol-related liver disease (51% and 43%, respectively) and median Model for End-Stage Liver Disease-Na: 13 were enrolled. Both groups had similar comorbidities and cirrhosis complications, ascites duration and severity, and frailty scores ( P = 0.94). Women had more symptoms related to their ascites (Ascites Questionnaire score = 66 ± 21 vs 60 ± 21 in men, P = 0.001) (higher value = feeling worse). 35% of women felt depressed vs 22% of men ( P = 0.0009), with lower mental but not physical functioning components of Short Form 36 ( P = 0.019). Women continued to conduct their daily activities as adequately as men as indicated by Duke Status Activity Index ( P = 0.27) and Godin Leisure Activity Index ( P = 0.47). DISCUSSION: Women with cirrhosis and ascites experienced worse emotional HRQoL than men without difference in daily function. Our analyses underscore the differences in the lived experience of women vs men with cirrhosis and highlight the need for patient-reported metrics to provide patient-centered care.
A Novel Machine Learning Model to Predict Revision ACL Reconstruction Failure in the MARS Cohort
Group, MARS, Vasavada, Vrinda, Devana, Sai K. , Hame, Sharon L. , Jazrawi, Laith M. , Huston, Laura J. , Haas, Amanda K. , Cooper, Daniel E. , Amendola, Annunziato, Annunziata, Christopher C., Arciero, Robert A. , Bach, Bernard R. , Baker, Champ L., Bartolozzi, Arthur R. , Baumgarten, Keith M. , Berg, Jeffrey H., Bernas, Geoffrey A., Brockmeier, Stephen F. , Bush‐Joseph, Charles A., Butler, J. Brad, Carey, James L. , Carpenter, James E. , Cole, Brian J. , Cooper, Jonathan M., Creighton, R. Alexander , Dunn, Warren R. , Flanigan, David C. , Frederick, Robert W., Ganley, Theodore J. , Gatt, Charles J. , Gecha, Steven R., Hannafin, Jo A., Harris, Norman Lindsay, Hechtman, Keith S., Hershman, Elliott B., Hoellrich, Rudolf G., Johnson, David C. , Kaeding, Christopher C., Kamath, Ganesh V. , Klootwyk, Thomas E., Levy, Bruce A. , Benjamin, C. , Maiers, G. Peter, Marx, Robert G. , Matava, Matthew J. , Mathien, Gregory M., McCormack, Robert G. , Miller, Bruce S., Nissen, Carl W. , O’Neill, Daniel F., Parker, Richard D., Purnell, Mark L., Ramappa, Arun J. , Rauh, Michael A. , Rettig, Arthur C., Sekiya, Jon K., Shea, Kevin G. , Slauterbeck, James R., Smith, Matthew V. , Svoboda, Steven J. , Taft, Timothy N., Tenuta, Joachim J., Tingstad, Edwin M., Vidal, Armando F. , Viskontas, Darius G., White, Richard A., Wolcott, Michelle L., Wright, Rick W. , York, James J. , Group, MARS, Vasavada, Kinjal , Moran, Jay T. , Lee, Chang Hee , Sherman, Orrin H. , Allen, Christina R. , DeBerardino, Thomas M. , Spindler, Kurt P , Stuart, Michael J., Brophy, Robert H. , Cox, Charles L. , David, Tal S. , Giffin, J. Robert , Johnson, David C., Johnson, Timothy S. , Jones, Morgan H. , Kaeding, Christopher C. , McAllister, David R. , McCarty, Eric C. , Miller, Bruce S., Owens, Brett D. , Spang, Jeffrey T. , Vidal, Armando F. , Williams, James S. , Wolf, Brian R.

Orthopaedic Journal of Sports Medicine | November 14, 2024 | Volume: 12 | Issue: 11 | Pages: No page available

10.1177/23259671241291920 | PMID 39555321 Get It

Background: As machine learning becomes increasingly utilized in orthopaedic clinical research, the application of machine learning methodology to cohort data from the Multicenter ACL Revision Study (MARS) presents a valuable opportunity to translate data into patient-specific insights. Purpose: To apply novel machine learning methodology to MARS cohort data to determine a predictive model of revision anterior cruciate ligament reconstruction (rACLR) graft failure and features most predictive of failure. Study Design: Cohort study; Level of evidence, 3. Methods: The authors prospectively recruited patients undergoing rACLR from the MARS cohort and obtained preoperative radiographs, surgeon-reported intraoperative findings, and 2- and 6-year follow-up data on patient-reported outcomes, additional surgeries, and graft failure. Machine learning models including logistic regression (LR), XGBoost, gradient boosting (GB), random forest (RF), and a validated ensemble algorithm (AutoPrognosis) were built to predict graft failure by 6 years postoperatively. Validated performance metrics and feature importance measures were used to evaluate model performance. Results: The cohort included 960 patients who completed 6-year follow-up, with 5.7% (n = 55) experiencing graft failure. AutoPrognosis demonstrated the highest discriminative power (model area under the receiver operating characteristic curve: AutoPrognosis, 0.703; RF, 0.618; GB, 0.660; XGBoost, 0.680; LR, 0.592), with well-calibrated scores (model Brier score: AutoPrognosis, 0.053; RF, 0.054; GB, 0.057; XGBoost, 0.058; LR, 0.111). The most important features for AutoPrognosis model performance were prior compromised femoral and tibial tunnels (placement and size) and allograft graft type used in current rACLR. Conclusion: The present study demonstrated the ability of the novel AutoPrognosis machine learning model to best predict the risk of graft failure in patients undergoing rACLR at 6 years postoperatively with moderate predictive ability. Femoral and tibial tunnel size and position in prior ACLR and allograft use in current rACLR were all risk factors for rACLR failure in the context of the AutoPrognosis model. This study describes a unique model that can be externally validated with larger data sets and contribute toward the creation of a robust rACLR bedside risk calculator in future studies. Registration: NCT00625885 (ClinicalTrials.gov identifier).
Surgical Predictors of Clinical Outcome 6 Years After Revision ACL Reconstruction
Group, The MARS, Wright, Rick W. , Huston, Laura J. , Haas, Amanda K. , Cooper, Daniel E. , Dunn, Warren R. , Lantz, Brett A., Amendola, Annunziato , Annunziata, Christopher C., Arciero, Robert A. , Bach, Bernard R. , Baker, Champ L., Bartolozzi, Arthur R. , Baumgarten, Keith M. , Berg, Jeffrey H., Bernas, Geoffrey A., Brockmeier, Stephen F. , Bush‐Joseph, Charles A., Butler, J. Brad, Carey, James L. , Carpenter, James E. , Cole, Brian J. , Cooper, Jonathan M., Creighton, R. Alexander , Flanigan, David C. , Frederick, Robert W., Ganley, Theodore J. , Gatt, Charles J. , Gecha, Steven R., Hame, Sharon L. , Hannafin, Jo A., Harner, Christopher D. , Harris, Norman Lindsay, Hechtman, Keith S., Hershman, Elliott B., Hoellrich, Rudolf G., Johnson, David C. , Kaeding, Christopher C., Kamath, Ganesh V. , Klootwyk, Thomas E., Levy, Bruce A. , Benjamin, C. , Maiers, G. Peter, Marx, Robert G. , Matava, Matthew J. , Mathien, Gregory M., McCormack, Robert G. , Miller, Bruce S., Nissen, Carl W. , O’Neill, Daniel F., Parker, Richard D., Purnell, Mark L., Ramappa, Arun J. , Rauh, Michael A. , Rettig, Arthur C., Sekiya, Jon K., Shea, Kevin G. , Slauterbeck, James R., Smith, Matthew V. , Svoboda, Steven J. , Taft, Timothy N., Tenuta, Joachim J., Tingstad, Edwin M., Vidal, Armando F. , Viskontas, Darius G., White, Richard A., Wolcott, Michelle L., York, James J. , Group, The MARS, Pennings, Jacquelyn S. , Allen, Christina R. , DeBerardino, Thomas M. , Spindler, Kurt P , Stuart, Michael J. , Brophy, Robert H. , Cox, Charles L. , David, Tal S. , Giffin, J. Robert , Johnson, David C., Johnson, Timothy S. , Jones, Morgan H. , Kaeding, Christopher C. , McAllister, David R. , McCarty, Eric C. , Miller, Bruce S., Owens, Brett D. , Sherman, Orrin H. , Spang, Jeffrey T. , Vidal, Armando F. , Williams, James S. , Wolf, Brian R.

The American Journal of Sports Medicine | November 6, 2024 | Volume: 52 | Issue: 13 | Pages: 3286-3294

10.1177/03635465241288227 | PMID 39503722 Get It

Background: Revision anterior cruciate ligament (ACL) reconstruction has been documented to have inferior outcomes compared with primary ACL reconstruction. The reasons why remain unknown. Purpose: To determine whether surgical factors performed at the time of revision ACL reconstruction can influence a patient’s outcome at 6-year follow-up. Study Design: Cohort study; Level of evidence, 2. Methods: Patients who underwent revision ACL reconstruction were identified and prospectively enrolled between 2006 and 2011. Data collected included baseline patient characteristics, surgical technique and pathology, and a series of validated patient-reported outcome instruments: Knee injury and Osteoarthritis Outcome Score (KOOS), International Knee Documentation Committee (IKDC) subjective form, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Marx activity rating score. Patients were followed up for 6 years and asked to complete the identical set of outcome instruments. Regression analysis was used to control for baseline patient characteristics and surgical variables to assess the surgical risk factors for clinical outcomes 6 years after surgery. Results: A total of 1234 patients were enrolled (716 men, 58%; median age, 26 years), and 6-year follow-up was obtained on 79% of patients (980/1234). Using an interference screw for femoral fixation compared with a cross-pin resulted in significantly better outcomes in 6-year IKDC scores (odds ratio [OR], 2.2; 95% CI, 1.2-3.9; P = .008) and KOOS sports/recreation and quality of life subscale scores (OR range, 2.2-2.7; 95% CI, 1.2-4.8; P < .01). Use of an interference screw compared with a cross-pin resulted in a 2.6 times less likely chance of having a subsequent surgery within 6 years. Use of an interference screw for tibial fixation compared with any combination of tibial fixation techniques resulted in significantly improved scores for IKDC (OR, 1.96; 95% CI, 1.3-2.9; P = .001); KOOS pain, activities of daily living, and sports/recreation subscales (OR range, 1.5-1.6; 95% CI, 1.0-2.4; P < .05); and WOMAC pain and activities of daily living subscales (OR range, 1.5-1.8; 95% CI, 1.0-2.7; P < .05). Use of a transtibial surgical approach compared with an anteromedial portal approach resulted in significantly improved KOOS pain and quality of life subscale scores at 6 years (OR, 1.5; 95% CI, 1.02-2.2; P≤ .04). Conclusion: There are surgical variables at the time of ACL revision that can modify clinical outcomes at 6 years. Opting for a transtibial surgical approach and choosing an interference screw for femoral and tibial fixation improved patients’ odds of having a significantly better 6-year clinical outcome in this cohort.
Biomarkers of cardiohepatic syndrome in the cardiac intensive care unit
Butt, Abid, Crespo‐Diaz, Ruben , Katz, Jason N. , Kamath, Priyanka , Miller, Erin , Rosenbaum, Andrew , Butt, A, Padkins, Mitchell , Hillerson, Dustin , Kamath, P, Miller, E, Samsky, Marc D. , Kashani, Kianoush , Jentzer, Jacob C.

European Heart Journal | October 28, 2024 | Volume: 45 | Issue: Supplement_1 | Pages: No page available

10.1093/eurheartj/ehae666.1742 Get It

Abstract Introduction Non-cardiovascular end-organ dysfunction is an important determinant of outcomes in cardiac intensive care unit (CICU) patients. We examined the association between in-hospital mortality with the severity and extent of admission liver function test (LFT) abnormalities in a heterogeneous CICU population. Purpose We hypothesized that a greater severity or extent of LFT abnormalities would be associated with higher in-hospital mortality. Methods We included consecutive unique adult CICU patients with available data for one or more of the admission LFT values of interest. Admission laboratory values were defined as those closest to CICU admission. We used the NIH Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 to categorize the severity of each LFT abnormality from Grade 0 (normal) to Grade 4 (life-threatening). We defined the extent of LFT abnormality as the number of individual LFTs meeting criteria for CTCAE Grade 1 or greater. The primary outcome of interest was all-cause in-hospital mortality. Odds ratio (OR) and 95% confidence interval (CI) values for in-hospital mortality were estimated using logistic regression, before and after multivariable adjustment. Results Of 12,428 unique CICU patients, 5,144 were excluded due to a lack of available data for any admission LFT values. The remaining 7,284 patients comprised the final study population. Among patients with available data for each individual LFT, abnormal values were present in: AST, 2,743/5,733 (47.8%); ALT 1,576/5,512 (28.6%); ALK 611/3,684 (16.6%); and TB 898/5,155 (17.4%). A total of 864 (11.9%) patients died during hospitalization. In-hospital mortality was higher for patients with one or more LFTs meeting criteria for CTCAE Grade 1 or greater (17.9% vs. 6.4%, adjusted OR 1.54 [1.27-1.86], p &lt;0.001). A stepwise increase in in-hospital mortality was observed with increasing CTCAE grade, both overall (adjusted OR 1.25 per each higher CTCAE grade [1.16-1.34], p &lt;0.001); (Figure 1A), and for each individual LFT (Figure 1B). Conclusion Cardiohepatic syndrome is an important predictor of prognosis in CICU patients, as the extent and severity of LFT abnormalities are strongly associated with in-hospital mortality. This is the first large-scale study to examine the association between the magnitude of hepatic biomarker derangement with in-hospital mortality in unselected CICU patients. Patients with markedly elevated LFT values exhibited the highest risk of in-hospital mortality. This analysis advocates for the inclusion of commonly obtained LFTs in future risk-prediction tools for enhanced prognostication.