Ryan Lavanchy, MPA

Research Interests

My research interests are primarily focused on evaluating outcomes for transplant candidates, recipients, and deceased and living donors in the United States. Key facets of my research include examining risk factors associated with transplant candidate and recipients' processes of care or outcomes, examining secular trends in the effects of known risk factors, and examining center-level and OPO-level variation in candidate/recipient outcomes and donor utilization respectively.

Publications

• Lopez R, Mohan S, Vail EA, Rodrigue JR, Arrigain S, Brosi D, LaVanchy R, Nydam T, Schold JD. Contribution of donor hospital characteristics to deceased donor organ recovery rates. Am J Transplant. 2026 May 22:S1600-6135(26)02552-9. doi: 10.1016/j.ajt.2026.05.2285. Epub ahead of print. PMID: 42177032; PMCID: PMC13276774.
• Schold JD, Arrigain S, Husain SA, Yu M, Lopez R, Brosi D, LaVanchy R, Pshak T, Cooper J, Nydam T, Mohan S. Kidney Transplant Candidates With High Frequency Deceased Donor Offers. Kidney Int Rep. 2026 May 20;11(8):106611. doi: 10.1016/j.ekir.2026.106611. PMID: 42328684; PMCID: PMC13276742.
• Brosi DN, Lopez R, Arrigain S, LaVanchy R, Cooper J, Schold JD. How contemporary living kidney donor transplants compare to prepandemic trends: An interrupted time series analysis. Am J Transplant. 2026 Aug;26(8):1933-1945. doi: 10.1016/j.ajt.2026.04.003. Epub 2026 Apr 8. PMID: 41962844.
• Park SY, LaVanchy R, Mott NM, Kirsch MJ, Bashian EJ, Zakrzewski J, Cain MT, Hoffman JRH, Lopez R, Schold JD, Teman NR, Gray AL, Calhoun K. Racial, ethnic, and sex disparities in lung transplant waitlist outcomes before and after composite allocation score implementation. JHLT Open. 2025 Nov 15;11:100441. doi: 10.1016/j.jhlto.2025.100441. PMID: 41439229; PMCID: PMC12721069.
• Brosi DN, Lopez R, Arrigain S, LaVanchy R, Agrawal A, Isaacson D, Tambur AR, Schold JD. Recipient Human Leukocyte Antigen-DR Homozygosity and Access to Quality Kidneys. Kidney Int Rep. 2025 Nov 11;11(2):103678. doi: 10.1016/j.ekir.2025.11.005. PMID: 41502812; PMCID: PMC12769391.
• Lopez R, Mohan S, Rodrigue JR, Arrigain S, Brosi D, Lavanchy R, Kaplan B, Pomfret EA, Schold JD. Association of organ procurement organization volume with Centers for Medicare and Medicaid Services performance evaluations. Am J Transplant. 2025 May;25(5):1013-1020. doi: 10.1016/j.ajt.2024.11.024. Epub 2024 Nov 27. PMID: 39608573.
• Lopez R, Mohan S, Rodrigue JR, Arrigain S, Brosi D, Lavanchy R, Kaplan B, Pomfret EA, Schold JD. Authors' reply to letter regarding "Association of organ procurement organization volume with CMS performance evaluations". Am J Transplant. 2025 May;25(5):1135-1137. doi: 10.1016/j.ajt.2025.01.016. Epub 2025 Jan 22. PMID: 39855342.
• Schold JD, Hoffman JRH, Mohan S, Gray AL, Lopez R, Arrigain S, Brosi D, LaVanchy R, Husain SA, Yu M, Pomfret EA. Association of the initial implementation of continuous distribution allocation policy with outcomes for lung transplant candidates by blood type. Am J Transplant. 2025 Aug;25(8):1756-1764. doi: 10.1016/j.ajt.2025.04.004. Epub 2025 Apr 8. PMID: 40209905.
• Schold JD, Arrigain S, Husain SA, Yu M, Lopez R, Brosi D, LaVanchy R, Mohan S. Variation of eGFR Wait Time Modifications for Black Kidney Transplant Candidates in the United States. J Am Soc Nephrol. 2025 Oct 1;36(10):2019-2029. doi: 10.1681/ASN.0000000734. Epub 2025 May 6. PMID: 40327843; PMCID: PMC12499610.
• Lopez R, Mohan S, Rodrigue JR, Arrigain S, Brosi D, Lavanchy R, Zingmond D, Kaplan B, Pomfret EA, Schold JD. Evaluation of the stability of organ procurement organization performance metrics. Am J Transplant. 2025 Oct;25(10):2151-2160. doi: 10.1016/j.ajt.2025.05.024. Epub 2025 May 21. PMID: 40409471.
• Schold JD, Arrigain S, Mohan S, Husain SA, Yu M, Lopez R, Brosi D, LaVanchy R, Pshak T, Burton JR Jr, Abreu P, Nydam T, Jackson WE. Candidates for liver transplant with high-frequency deceased donor offers. Liver Transpl. 2026 Aug 4. doi: 10.1097/LVT.0000000000000973. Epub ahead of print. PMID: 42555760.

Professional Memberships

• The American Society of Transplantation, Member