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32 citation(s) found for "Ty, Diwan S".

Federation Opacity and the Risks of Recursion in High-Stakes Clinical Scenarios
Matzke, Jared G. , Beaman, Lindsay R. , Diwan, Tayyab S. , Beaman, Lindsay

The American Journal of Bioethics | August 3, 2026 | Volume: 26 | Issue: 8 | Pages: 156-158

10.1080/15265161.2026.2690926 | PMID 42545276 Get It

Donor Mentoring in Private Kidney Paired Donation Programs: The Need for Transparency and Accountability
Diwan, Tayyab S., Bhudiraja, Pooja, Mao, Shennen, Schinstock, Carrie, Diwan, Tayyab S.

Transplantation | May 13, 2026 | Volume: 110 | Issue: 7 | Pages: e1555-e1556

10.1097/tp.0000000000005764 | PMID 42132506 Get It

Predictors and impact of multiple listing for liver transplantation in the United States across the acuity circles eras
Cywes, Claire , Bankes, Audrey C , Hamandi, Ali, Daniels, Robert J, Fipps, David C. , Lee, Frank G, Ellertson, Marka F, Limburg, Benjamin , Beaman, Lindsay R. , Diwan, Tayyab S, Ellertson, Marka , Hamandi, Ali M, Ellertson, Marka F. , Fipps, David C , Beaman, Lindsay , Bankes, Audrey , Lee, Frank G , Diwan, Tayyab S.

Liver Transplantation | April 28, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1097/lvt.0000000000000892 | PMID 42048126 Get It

Multi-listing (ML) increases the odds of transplantation compared with single-center listing. However, not all patients have equivalent access to ML. The recent allocation policy change prioritized distance from the donor hospital in an attempt to decrease geographic disparities. This study assessed access to liver transplant (LT) given ML practices before and after the acuity circles policy change. United Network for Organ Sharing data were queried for LTs between January 1, 2016, and November 1, 2024. Patients were grouped by listing at one versus multiple centers and by acuity circle era (ACE). Cohort characteristics and comparisons were described using chi-square and Wilcoxon rank tests. Multivariable logistic regressions and propensity score match (PSM) were performed to assess associations between ML and LT. The final cohort consisted of 105,030 patients; 4084 (3.9%) were multi-listed. Racial/ethnic minority groups, less educated, and publicly insured candidates were less often multi-listed. ML was positively associated with LT in all analyses (overall: OR=1.180, p <0.001; PSM: OR=1.164, p =0.001; pre-ACE: OR=1.127, p =0.015; post-ACE: OR=1.218, p <0.001). Education, race/ethnicity, and insurance type were also associated with LT across all analyses. ML patients were more often transplanted at their primary center with a significant increase in primary center LT post-ACE (53.4% vs. 63.4%, p <0.001). ML and LT had a positive correlation. There was a negative association between minority groups and ML as well as LT. Although acuity circles decreased geographic disparities, they did not change ML accessibility across candidates.
Clarifying “Selection”: A Call to Standardize Terminology in the Pathway to Transplant
Kim, Christopher H., Beaman, Lindsay R. , Diwan, Tayyab S., Kim, Christopher H. , Diwan, Tayyab , Beaman, Lindsay , Diwan, Tayyab S.

Clinical Transplantation | March 14, 2026 | Volume: 40 | Issue: 3 | Pages: No page available

10.1111/ctr.70502 | PMID 41830182 Get It

Obesity in Living Kidney Donors from Risk to Ethics
Budhiraja, Pooja , Denic, Aleksandar, Issa, Naim , McKee, Katie, Schinstock, Carrie, Taler, Sandra J. , Heimbach, Julie K. , Mirie, Kayla R., Ty, Diwan S, Kukla, Aleksandra, Đenić, Aleksandar , Bzoma, Beata , Denic, Aleksandar , Issa, Naim , Taler, Sandra J , Heimbach, Julie K , Jadlowiec, Caroline , Mirie, Kayla R , Diwan, Tayyab , Kukla, Aleksandra , Budhiraja, Pooja , Bzoma, Beata , Chakkera, Harini A. , Jadlowiec, Caroline C. , Kukla, Aleksandra

Clinical Journal of the American Society of Nephrology | February 17, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.2215/cjn.0000001030 | PMID 41701547 Get It

Obesity is increasingly prevalent among living kidney donor candidates, presenting complex clinical, ethical, and logistical challenges. Although obesity is linked to increased post-donation hypertension, diabetes, proteinuria, and chronic kidney disease, the overall absolute risks are modest and may differ depending on metabolic health and patterns of fat distribution. Current reliance on body mass index alone fails to capture the full spectrum of obesity-related risks, leading to inconsistent donor selection practices and potential inequities. This review examines the pathophysiological mechanisms of obesity-related kidney injury and available evidence on comorbidities and postdonation outcomes related to obesity. We discuss tools for better risk stratification, such as imaging-based adiposity assessment and personalized weight management strategies, and note that some risks may remain after weight loss. Barriers such as rigid body mass index cutoffs, limited access to treatment, and lack of long-term follow-up exacerbate disparities in access to donation. We argue for a shift toward individualized, risk-based evaluation supported by multidisciplinary care. We underscore the importance of donor counseling and advocate for a comprehensive, rather than paternalistic approach to living kidney donor selection. Advancing safe and equitable living donation in the context of rising obesity rates will necessitate revised guidelines, improved access to treatment, and an ongoing commitment to donor well-being.
NCCN Guidelines® Insights: Genetic/Familial High-Risk Assessment: Breast, Ovarian, Pancreatic, and Prostate, Version 2.2026
Cheng, Heather H., Goggins, Michael, Yurgelun, Matthew B. , Karlan, Beth Y., Norquist, Barbara S., Daly, MB, Pal, Tuya, AlHilli, Zahraa, Arun, Banu , Churpek, Jane, Colonna, Sarah, Domchek, Susan M., Escobar, Mauricio R., Friedman, S, Hagemann, Andrea, Hendrix, Ashley, Huo, Dezheng, Hutton, Mollie L., Kassem, Nawal , Kurian, Allison W., Laronga, Christine , Mak, Julie S, McDonnell, Kevin, Mersch, Jacqueline, Offit, Kenneth, Plichta, Jennifer K. , Rash, Dominique , Reiser, Gwen , Senter-Jamieson, Leigha, Shannon, K. McWeeney, Welborn, Jeanna, Wick, Myra , Wood, Marie , Darlow, Susan, Diwan, Zeenat, Dwyer, Mary, Churpek, Jane E. , Kurian, Allison W. , Kurian, Allison W , Plichta, Jennifer K , Churpek, Jane E , Churpek, Jane , Giri, Veda N. , Goggins, Michael, Karlan, Beth Y , Norquist, Barbara, Pal, Tuya , Al‐Hilli, Zahraa , Arun, Banu , Colonna, Sarah V. , Domchek, Susan M. , Fejerman, Laura , Hagemann, Andrea, Huo, Dezheng , Khan, Seema A. , Mak, Julie , Maxwell, Kara N. , McDonnell, Kevin , Merajver, Sofía D. , Mersch, Jacqueline A, Offit, Kenneth , Darlow, Susan

Journal of the National Comprehensive Cancer Network | February 9, 2026 | Volume: 24 | Issue: 2 | Pages: 2-10

10.6004/jnccn.2026.0007 | PMID 41671423 Get It

The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Genetic/Familial High-Risk Assessment: Breast, Ovarian, Pancreatic, and Prostate are intended to serve as a resource for health care providers to identify individuals who may benefit from cancer risk assessment and genetic counseling and testing; help guide decisions related to genetic testing; and facilitate a multidisciplinary approach in the comprehensive care of individuals at increased risk for hereditary breast, ovarian, pancreatic, and prostate cancer. The current guidelines focus primarily on assessment of pathogenic and likely pathogenic (P/LP) variants associated with increased risk of breast, ovarian, pancreatic, and prostate cancer and recommended approaches to genetic counseling/testing and care strategies in individuals with these P/LP variants associated with increased risk of these cancers. These NCCN Guidelines Insights summarize the panel’s most recent recommendations regarding screening for prostate cancer and pancreas cancer, as well as testing criteria for nonepithelial ovarian cancer.
Addressing Transplant Policy Shortcomings Utilizing a Relational Leadership Model
Beaman, Lindsay R. , Kim, Christopher H. , Diwan, Tayyab S., Diwan, Tayyab , Beaman, Lindsay , Diwan, Tayyab S.

The American Journal of Bioethics | January 14, 2026 | Volume: 26 | Issue: 1 | Pages: 101-103

10.1080/15265161.2025.2594430 | PMID 41533110 Get It

NCCN Guidelines® Insights: Soft Tissue Sarcoma, Version 1.2025
Mehren, Margaret von, Kane, John M., Armstrong, Samantha A., Balach, Tessa, Bishop, Andrew J., Buehler, Darya, Carr-Ascher, Janai, Choy, Edwin, Cipriano, Cara, Connolly, Mary, Dann, Amanda, Davis, Elizabeth J., Dry, Sarah, Eulo, Vanessa, Ganjoo, Kristen N., Gonzalez, Ricardo J., Viveiros, Pedro A. Hermida De, Hitchcock, Ying J., Kim, Edward, Lefler, Daniel, Liebner, David, McCarter, Martin, McGarry, Sean V., Mesko, Nathan W., Meyer, Christian, Motamedi, Kambiz, Movva, Sujana, Pappo, Alberto S., Pollack, Seth M., Poppe, Matthew, Riedel, Richard F., Robinson, Steven, Schuetze, Scott M., Sicklick, Jason K., Tseng, William W., Weiss, Mia C., Zimel, Melissa, Hang, Lisa E., Bergman, Mary Anne, Diwan, Zeenat, Pappo, Alberto S. , Riedel, Richard F. , Riedel, Richard F , Mehren, Margaret von, Kane, John M., Armstrong, Samantha A., Balach, Tessa, Bishop, Andrew J., Buehler, Darya, Carr-Ascher, Janai, Choy, Edwin, Cipriano, Cara, Connolly, Mary, Dann, Amanda, Davis, Elizabeth J., Dry, Sarah, Eulo, Vanessa Anne , Ganjoo, Kristen N., Gonzalez, Ricardo J., Viveiros, Pedro A. Hermida De, Hitchcock, Ying J., Kim, Edward, Lefler, Daniel, Liebner, David, McCarter, Martin, McGarry, Sean V., Mesko, Nathan W., Meyer, Christian, Motamedi, Kambiz, Movva, Sujana, Pollack, Seth M., Poppe, Matthew, Robinson, Steven, Schuetze, Scott M., Sicklick, Jason K., Tseng, William W., Weiss, Mia C., Zimel, Melissa, Hang, Lisa E., Bergman, Mary Anne, Diwan, Zeenat

Journal of the National Comprehensive Cancer Network | December 17, 2025 | Volume: 23 | Issue: 12 | Pages: 498-506

10.6004/jnccn.2025.0058 | PMID 41671462 Get It

The treatment landscape for soft tissue sarcomas (STS) is evolving constantly. These NCCN Guidelines Insights focus on recent updates to the NCCN Guidelines for STS specific to surgical management and systemic therapy recommendations for various subtypes.
Development and Validity of a Novel Transplant Operative Assessment Tool
Cortez, Alexander R. , Brian, Riley , Lam, Jenny , Wilson, Mark , Papageorge, Christina M. , Wisel, Steven A. , Diwan, Tayyab, Syed, Shareef , Lam, Jenny, Boscardin, Christy , Diwan, Tayyab S.

Transplantation Direct | November 4, 2025 | Volume: 11 | Issue: 11 | Pages: e1869

10.1097/txd.0000000000001869 | PMID 41141650 Get It

Background. Assessment tools in surgical education help identify improvement areas for trainees. We developed and present validity evidence for a novel Transplant Operative Assessment Tool to optimize technical feedback for surgical trainees in transplantation. Methods. The Transplant Operative Assessment Tool assesses learners on anatomy, technical skills, judgment, and communication. Performance is rated across 5 competency levels. Content validity evidence included a construct map using existing literature and expert cognitive interviews. Ratings were used to develop an item response theory calibration, which was then used to evaluate the tool and provide validity evidence. Results. Eighty-two assessments for 28 trainees (16 residents, 12 fellows) were completed by 25 faculty surgeons across 4 programs. Fifty-six kidney transplants, 13 liver transplants, and 13 donor nephrectomies were assessed. The mean assessment completion time was 4.1 ± 4.3 min. Internal structure validity was evaluated by calculating item infit (range, 0.86–1.15), indicating a strong model fit and confirming a high quality of items. Internal consistency was also high (Cronbach’s alpha = 0.94). There was a positive correlation between ratings and training level ( P < 0.01), indicating strong discriminatory power. Warm ischemia time for transplant operations did not correlate with performance ( P = 0.16). Conclusions. These data provide validity evidence for a novel operative assessment tool. This instrument can measure performance, monitor progress, document competency, and has the potential to provide valuable feedback.
Liver resection with and without vascular resection versus transplantation for de novo perihilar cholangiocarcinoma
Dong, Yawen , Li, Zhihao , Podrascanin, V. , Eaton, John E. , Ilyas, Sumera I. , Gores, Gregory J. , Warner, Susanne G. , Diwan, Tayyab S. , Nagorney, David M. , Heimbach, Julie K. , Smoot, Rory L. , Taner, Timuçin , Gores, Gregory J. , Starlinger, Patrick , Smoot, Rory L , Ilyas, Sumera Irie , Warner, Susanne G , Li, Zhihao , Heimbach, Julie K , Dong, Yawen , Starlinger, Patrick

Hepatology | July 7, 2025 | Volume: 83 | Issue: 5 | Pages: 1128-1142

10.1097/hep.0000000000001449 | PMID 40622853 Get It

Background and Aims: The optimal treatment strategy for de novo perihilar cholangiocarcinoma (pCCA) remains debated. This study compares outcomes between liver transplantation following neoadjuvant chemoradiation (RT+LT) and liver resection (LR), with (LR+VR) and without vascular resection (LR w/o VR). Approach and Results: This single-center, retrospective study included patients with de novo perihilar cholangiocarcinoma treated at the Mayo Clinic Rochester (1993–2023) with curative-intent surgery. Patients underwent either (1) LR, classified as LR+VR or LR w/o VR, or (2) RT+LT following the transplant protocol. Overall survival (OS) and recurrence-free survival were analyzed using as-treated and intention-to-treat approaches, incorporating competing risk analysis and direct matching. In the as-treated analysis, RT+LT showed superior median OS compared with LR w/o VR (78.0 vs. 58.2 mo, p =0.03) and LR+VR (25.8 mo, p <0.001). Considering dropout rates (RT+LT: 41%, LR: 28%), intention-to-treat analysis showed no significant OS difference between LR and RT + LT (31.7 vs. 38.5 mo, p =0.19). In matched as-treated analysis, RT + LT had no significant survival benefit over LR w/o VR (50.6 vs. 140.6 mo, p =0.08) or LR+VR (25.8 mo, p =0.11). Perioperative mortality was 4% (RT+LT), 7% (LR w/o VR), and 8% (LR + VR). Conclusions: Both LR and RT+LT achieve excellent oncological outcomes in selected patients with de novo perihilar cholangiocarcinoma. Key challenges remain dropouts during neoadjuvant therapy in patients planned for LT and high perioperative mortality for patients undergoing LR. OS doubles in patients undergoing LR+VR compared with dropouts, supporting LR+VR as a viable option for patients who are ineligible for LT. Appropriate patient selection is crucial, as those not undergoing surgery suffer from a dismal prognosis.