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The Scientific and Data Coordinating Center at Penn receives data and provides ongoing support for a number of Ancillary Studies supported by the CRIC Cohort utilizing both CRIC study participants and biological samples obtained from CRIC study participants. Through the CRIC data sharing policy, investigators have an opportunity to tap into the rich CRIC data to pursue their own research goals.

In addition to the CRIC Clinical Centers listed on the Participating Institutions page, collaborative research partnerships are currently conducted at a number of institutions across the country including, but not limited to, University of Utah, University of Miami, University of North Carolina, George Washington University, University of Alabama, as well as at international sites in China, Japan, Peru, and Germany 

A selection of CRIC Ancillary Studies managed by the CRCU appears below:

Wednesday, January 7, 2026 -
4:16 pm -

The art and science of asking questions is the source of all knowledge.

There is no medicine like hope, no incentive so great and no tonic so powerful as expectations of something better than tomorrow.

Every great advance in science has issued from a new audacity of the imagination.

Thursday, May 18, 2023
5:00 pm - 6:00 pm
View CCEB/DBEI Epi Seminar Series 2023 Speaker Schedule (https://upenn.box.com/s/s7019hmwg5g4iommykjrtsnkbk4m3381)
Thursday, May 11, 2023
5:00 pm - 6:00 pm
View CCEB/DBEI Epi Seminar Series 2023 Speaker Schedule (https://upenn.box.com/s/s7019hmwg5g4iommykjrtsnkbk4m3381)
Vishnu Potluri, MD, MPH

Vishnu Potluri, MD, MPH

 

 

Vishnu Potluri, MD, MPH is an Assistant Professor in the Renal Division and a Senior Scholar at the Center for Clinical Epidemiology and Biostatistics at the University of Pennsylvania. Dr. Potluri’s research focuses on improving health care outcomes for patients with end stage kidney disease by improving access to kidney transplantation, reducing health care disparities, and improving outcomes and utilization of donated organs. His research efforts are supported by a career development grant (K08) from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Dr. Potluri’s methodological interests includes geospatial epidemiology, multivariable matching methods, and big data analytics.

 

 

 

 

Selected Publications:

Schaubel DE, Tran AH, Abt PL, Potluri VS, Goldberg DS, Reese PP.: Five-Year Allograft Survival for Recipients of Kidney Transplants From Hepatitis C Virus Infected vs Uninfected Deceased Donors in the Direct-Acting Antiviral Therapy Era JAMA 328 : 1102-1104,2022.

Saine ME, Schnellinger EM, Liu M, Diamond JM, Crespo MM, Prenner S, Potluri V, Bermudez C, Mentch H, Moore M, Besharatian B, Goldberg DS, Barg FK, Reese PP.: Decision-making Among Hepatitis C Virus-negative Transplant Candidates Offered Organs from Donors with HCV Infection Transplant Direct 8 : e1341,2022.

V. Potluri, P. Reese, S. Prenner, H. Mentch, D. Goldberg, T. Claridge, J. Smith, C. Gentile, V. Van Deerlin, R. Reddy, T. Fallah, C. Bermudez, M. Crespo, J. Diamond: Oral Presentation: The SHELTER Trial Of Transplanting Donor Hepatitis C Virus RNA+ Lungs Into Uninfected Recipients American Transplant Congress : 2022.

Molnar MZ, Potluri VS, Schaubel DE, Sise ME, Concepcion BP, Forbes RC, Blumberg E, Bloom RD, Shaffer D, Chung RT, Strohbehn IA, Elias N, Azhar A, Shah M, Sawinski D, Binari LA, Talwar M, Balaraman V, Bhalla A, Eason JD, Besharatian B, Trofe-Clark J, Goldberg DS, Reese PP: Association of donor hepatitis C virus infection status and risk of BK polyomavirus viremia after kidney transplantation American Journal of Transplantation 22 (2): 599-609,2022.

Potluri VS, Bloom RD: Induction Therapy in Immunologically Well-Matched Recipients: Less May Be More Clinical Journal of the American Society of Nephrology 17 : 173-175,2022.

Potluri, VS, Bloom, RD: Effect of Policy on Geographic Inequities in Kidney Transplantation American Journal of Kidney Disease : 2021.

Reese PP, Mohan S, King KL, Williams WW, Potluri VS, Harhay MN, Eneanya ND.: Racial disparities in preemptive waitlisting and deceased donor kidney transplantation: Ethics and solutions Am J Transplant 21 (3): 958-967,2021.

Potluri V, Schaubel D, Sise M, Concepcion B, Forbes R, Blumberg E, Goldberg D, Reese P, Bloom R, Shaffer D, Chung R, Sawinski D, Strohben I, Elias N, Azhar A, Shah M, Eason J, Binari L, Talwar M, Balaraman V, Bhalla A, Besharatian B, Molnar M.: Oral Presentation: Association of Donor Hepatitis C Virus Infection Status and Risk of Bk Polyomavirus Viremia After Kidney Transplantation American Transplant Congress : 2021.

Reese PP, Aubert O, Naesens M, Huang E, Potluri V, Kuypers D, Bouquegneau A, Divard G, Raynaud M, Bouatou Y, Vo A, Glotz D, Legendre C, Lefaucheur C, Jordan S, Empana JP, Jouven X, Loupy A.: Assessment of the Utility of Kidney Histology as a Basis for Discarding Organs in the United States: A Comparison of International Transplant Practices and Outcomes J Am Soc Nephrol : 2021.

Potluri VS, Sawinski D, Tam V, Shults J, Cohen JB, Wiebe DJ, Shah SP, Berns JS, Reese PP.: Effect of Neighborhood Food Environment and Socioeconomic Status on Serum Phosphorus Level for Patients on Chronic Dialysis J Am Soc Nephrol 31 (11): 2622-2630,2020.

Ali G. Hamedani, MD, MHS

Ali G. Hamedani, MD, MHS

Ali Hamedani, MD, MHS is an Assistant Professor of Neurology at the University of Pennsylvania. His research is focused around the role of visual dysfunction in Parkinson’s disease and other neurodegenerative disease outcomes (especially hallucinations and other neurocognitive sequelae) using national health surveys and administrative claims data. He has also examined the prevalence and health care utilization patterns associated with visual impairment in the older adult population. He obtained his MD at the University of Maryland School of Medicine. He also holds a Master’s degree in Epidemiology from the Johns Hopkins Bloomberg School of Public Health. After completing his neurology residency at the University of Pennsylvania, Dr. Hamedani obtained fellowship training in both neuro-ophthalmology and movement disorders.

 

 

Contact information:

423 Guardian Drive
Blockley Hall 829
Philadelphia, PA 19104

Education:

B.S. (Biology)
Yale University, 2008.
M.H.S. (Epidemiology)
Johns Hopkins Bloomberg School of Public Health, 2012.
M.D.
University of Maryland School of Medicine, 2013.

Post-Graduate Training:

Internal Medicine Internship, Hospital of the University of Pennsylvania, 2013-2014.
Neurology Residency, Hospital of the University of Pennsylvania, 2014-2017.
Samantha and Michael Jordan Neuro-Ophthalmology Fellowship, Hospital of the University of Pennsylvania / Scheie Eye Institute / Children’s Hospital of Philadelphia, 2017-2018.
Neuroepidemiology Post-Doctoral Training Program, Perelman School of Medicine, University of Pennsylvania, 2018-2020.
NeuroNEXT Clinical Research Fellows Training Program, University of Pennnsylvania, 2019-2020.

Certifications:

American Board of Psychiatry and Neurology, 2017.

Selected Publications:

Xu A, Hamedani AG: Cataract surgery utilization in Parkinson’s disease: the English Longitudinal Survey on Ageing. Association for Research in Vision and Ophthalmology April 2023.

Hamedani AG, Willis AW, Ying GS: Visual impairment, age-related eye disease, and neuropsychiatric outcomes in older adults. Association for Research in Vision and Ophthalmology April 2023.

Li M, Hamedani AG: Association of visual impairment with neuropsychiatric symptoms of dementia. Association for Research in Vision and Ophthalmology April 2023 Notes: Platform presentation, ARVO Travel Award for mentee.

Xue K, Feng Y, Tam V, Lin CC, De Lott LB, Hamedani AG: Sociodemographic and geographic variation in access to neuro-ophthalmologists in the United States. North American Neuro-Ophthalmology Society March 2023.

Markowitz D, Aamodt W, Hamedani AG: Social Determinants of Health in Idiopathic Intracranial Hypertension. North American Neuro-Ophthalmology Society March 2023.

Feng Y, Lin CC, Hamedani AG, De Lott LB: A Validated Method to Identify Neuro-Ophthalmologists in a Large Administrative Claims Database Journal of Neuro-Ophthalmology Jan 2023.

Lin SC, Giang A, Pistilli M, Liu GT, Avery RA, Shindler KS, Hamedani AG, Ross AG, Tamhankar MA: Frequency and etiologies of visual disturbance after cataract surgery identified in neuro-ophthalmology clinic. Journal of Neuro-Ophthalmology January 2023.

Xue K, Feng Y, Tam V, Lin CC, De Lott LB, Hamedani AG: Sociodemographic and geographic variation in access to neuro-ophthalmologists in the United States. Journal of Neuro-Ophthalmology in press 2023.

Hamedani AG, McPherson TO, Aban I, Lee I, Kupersmith MJ, Wolf GI, Kaminski HJ: Attitudes and beliefs towards thymectomy in the Myasthenia Gravis Patient Registry. Journal of Clinical Neuromuscular Disease in press 2023.

Morrison AH, Liu GT, Hamedani AG: Ocular myasthenia gravis. Current Treatment Opinions in Neurology in press 2023.

 

Jessie Torgersen, MD

Jessie Torgersen, MD

Epidemiology and clinical impact of liver disease in HIV, specifically hepatic steatosis, viral hepatitis and hepatocellular carcinoma in HIV.

 

Selected Publications

Mehta SJ, Torgersen J, Small DS, Mallozzi CP, McGreevey III JD, Rareshide CAL, Evans CN, Epps M, Stabile D, Snider CK, Patel MS.: Effect of a Default Order vs an Alert in the Electronic Health Record on Hepatitis C Virus Screening Among Hospitalized Patients: A Stepped-Wedge Randomized Clinical Trial. JAMA Network Open 5(3): e222427, March 2022.

Torgersen J, Taddei TH, Lo Re V 3rd.: Reply to: "Is it safe to treat chronic hepatitis C patients with decompensated cirrhosis with PI-based DAA?" Journal of Hepatology March 2022.

Torgersen J, Newcomb CW, Carbonari DM, Rentsch CT, Park LS, Mezochow A, Mehta RL, Buchwalder L, Tate JP, Bräu N, Bhattacharya D, Lim JK, Taddei TH, Justice AC, Lo Re III V: Protease inhibitor-based direct-acting antivirals are associated with increased risk of aminotransferase elevations but not hepatic dysfunction or decompensation. Journal of Hepatology 75(6): 1312-1322, December 2021.

Kim HN, Newcomb CW, Carbonari DM, Roy JA, Torgersen J, Althoff KN, Kitahata MM, Reddy KR, Lim JK, Silverberg MJ, Mayor AM, Horberg MA, Cachay ER, Kirk GD, Sun J, Hull M, Gill MJ, Sterling TR, Kostman JR, Peters MG, Moore RD, Klein MB, Lo Re V 3rd; North American AIDS Cohort Collaboration on Research, Design of IeDEA.: Risk of HCC With Hepatitis B Viremia Among HIV/HBV-Coinfected Persons in North America. Hepatology 74(3): 1190-1202, September 2021.

Anand P, Wilson J, Carter B, Bronstein A, Schwartz A, Harrington B, Adams T, Saine ME, Norris A, Metzger D, Short WR, Torgersen J.: Clinic screening for adverse childhood experiences in people living with HIV to Improve Care Delivery. AIDS Care 22(1): 1-9, July 2021.

Torgersen J, Kallan MJ, Carbonari DM, Park LS, Mehta RL, D'Addeo K, Tate JP, Lim JK, Goetz MB, Rodriguez-Barradas MC, Bräu N, Brown ST, Taddei TH, Justice AC, Lo Re V 3rd.: Brief Report: Accuracy of FIB-4 for Cirrhosis in People Living With HIV and Hepatocellular Carcinoma. J Acquir Immune Defic Syndr 85(5): 530-534, December 2020.

Beigel JH, Tomashek KM, Dodd LE, Mehta AK, Zingman BS, Kalil AC, Hohmann E, Chu HY, Luetkemeyer A, Kline S, de Castilla DL, Finberg KW, Dierberg K, Tapson V, Hsieh L, Patterson TF, Paredes R, Sweeney DA, Short WR, Touloumi G, Lye DC, Ohmagari N, Oh M, Ruiz-Palacios GM, Benfield T, Fätkenheuer G, Kortepeter MG, Atmar RL, Creech CB, Lundgren J, Babiker AG, Pett S, Neaton JD, Burgess TH, Bonnett T, Green M, Makowski M, Osinusi A, Nayak S, Lane HC, ACTT-1 Study Group : Remdesivir for the Treatment of Covid-19 - Final Report. N Engl J Med 383(19): 1813-1826, November 2020.

Torgersen J, Kallan MJ, Carbonari DM, Park LS, Mehta RL, D'Addeo K, Tate JP, Lim JK, Goetz MB, Rodriguez-Barradas MC, Gibert CL, Bräu N, Brown ST, Roy JA, Taddei TH, Justice AC, Lo Re III V: HIV RNA, CD4+ Percentage, and Risk of Hepatocellular Carcinoma by Cirrhosis Status. J Natl Cancer Inst 112(7): 747-755, July 2020.

Torgersen J, Taddei TH, Park LS, Carbonari DM, Kallan MJ, Mitchell Richards K, Zhang X, Jhala D, Bräu N, Homer R, D'Addeo K, Mehta R, Skanderson M, Kidwai-Khan F, Justice AC, Lo Re V 3rd.: Differences in Pathology, Staging, and Treatment between HIV(+) and Uninfected Patients with Microscopically Confirmed Hepatocellular Carcinoma. Cancer Epidemiol Biomarkers Prev 29(1): 71-78, January 2020.

Torgersen J, So-Armah K, Freiberg MS, Goetz MB, Budoff MJ, Lim JK, Taddei T, Butt AA, Rodriguez-Barradas MC, Justice AC, Kostman JR, Lo Re V 3rd.: Comparison of the prevalence, severity, and risk factors for hepatic steatosis in HIV-infected and uninfected people. BMC Gastroenterol 19(1): 52, April 2019.

Torgersen J, Bellamy SL, Ratshaa B, Han X, Mosepele M, Zuppa AF, Vujkovic M, Steenhoff AP, Bisson GP, Gross R: Impact of Efavirenz Metabolism on Loss to Care in Older HIV+ Africans. European Journal of Drug Metabolism and Pharmacokinetics 44(2): 179-187, April 2019.

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