SDCC – Prospective Cohort Study of Chronic Renal Insufficiency

Overview

Insights into the cause of kidney failure have emerged from research, but less is known about the epidemiology of less severe forms of kidney disease known both as chronic kidney disease (CKD) or chronic renal insufficiency (CRI).

The Chronic Renal Insufficiency Cohort (CRIC) Study was established to study the consequences of CKD with a particular focus on cardiovascular illness like myocardial infarction (heart attack) and stroke. The CRIC Study will identify high-risk subgroups of individuals with CRI, informing future treatment trials, and development of preventive therapies.

CRIC is an observational study that to date, over 5000 participants have been enrolled in the CRIC cohort. The goal for CRIC 2018 which began in July 2018 is to follow participants for an additional 5 years. To maximize the opportunities inherent in this unique scientific resource, the CRIC Study will, in its next phase, pursue a multifaceted strategy involving: (a) continued follow-up of the cohort and investigation of a broad array of factors associated with the progression and consequences of CKD utilizing state-of-the-art methods in biostatistics and bioinformatics; and (b) the use of novel remote data collection techniques to identify trajectories of kidney function and cardiovascular risk sub-phenotypes.

Full Title of Study: “Prospective Cohort Study of Chronic Renal Insufficiency”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Prospective
  • Study Primary Completion Date: June 2023

Detailed Description

Previously enrolled participants who reconsent to the next phase. CRIC 2018, will be enrolled in this observational study. Participants will remain under the care of their usual physicians. Questionnaires will be completed and tests will be conducted that will provide information about aspects of kidney and heart health status.

Participants who reconsent to this phase will return to the center for a more extensive visit. At the Clinic Visit the following will occur:

- weight is measured

- blood pressure and heart rate are recorded

- information about medical history and medication used recently

- blood draw (about ½ cup) for the following tests: CBC (Complete Blood Count), tests of metabolism, and several other heart and kidney tests

- blood pressure in the leg and arm calculated as the Ankle Brachial Index (ABI)

- urine sample collection for kidney function testing

- complete questionnaires about quality of life, diet, mood, thought processes and physical activity

This visit takes about 1 to 2 hours. Participants will be contacted by telephone six months after the Baseline Visit to ask about recent medical events and medications.

Participants will be asked to return to the center for annual visits during which many but not all of the procedures described above will be conducted.

Additionally, up to 1500 CRIC participants will be asked to participate in one of two substudies using remote data collection techniques to identify trajectories of kidney function and cardiovascular risk sub-phenotypes.

Arms, Groups and Cohorts

  • CRIC Cohort
  • CRIC Subcohort

Clinical Trial Outcome Measures

Primary Measures

  • The slope of GFR is the primary outcome; Primary outcomes regarding CVD will focus on clinical events indicative of ischemic heart disease, CHF, stroke, and peripheral vascular disease supplemented by radiographic evidence of progressive CVD
    • Time Frame: 5 yrs

Secondary Measures

  • 1.Onset of ESRD; 2.Significant loss of renal function; 3.Composite clinical outcome defined by the occurrence of either 50% decline, or 25 l/min/1.73 m2 decline in GFR from baseline, or onset of ESRD; 4. Slope of change in proteinuria over time.
    • Time Frame: 5 yrs

Participating in This Clinical Trial

Inclusion Criteria

During the screening visit a blood sample will be tested to indirectly check kidney function based on the serum creatinine level:

  • Age Range: 45 – 79 years
  • Estimated Glomerular Filtration Rate (GFR): 45 – 70 mL/min/1.73m²
  • Proteinuria: varies dependent on eGRF

Exclusion Criteria

  • Unable or unwilling to provide informed consent
  • Previously received dialysis (peritoneal and/or hemodialysis) lasting more than one month
  • Prior organ or bone marrow transplant
  • Prior renal transplant
  • Received immunosuppressive or other immunotherapy for primary renal disease or systemic vasculitis that affects the kidneys (i.e., anti-GCM, ANCA, SLE, IgA nephropathy, cryoglobulin, etc.) within the past six months before enrollment
  • Received chemotherapy or alkylating agents for systemic cancer
  • Known cirrhosis
  • NYHA Class III or IV heart failure at baseline
  • Previous diagnosis of multiple myeloma or renal carcinoma
  • Previously diagnosed polycystic kidney disease
  • Known HIV infection and/or AIDS
  • Pregnant or breast-feeding women
  • Currently participating in an interventional clinical trial (i.e., primarily trials of therapeutic agents that may have an effect on renal or cardiovascular outcomes).
  • Institutionalized (e.g., prisoner, nursing home resident, skilled nursing facility resident)
  • Appears unlikely or unable to participate in the required study procedures as assessed by the investigator, study coordinator or designee.

Gender Eligibility: All

Minimum Age: 45 Years

Maximum Age: 79 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • University of Pennsylvania
  • Collaborator
    • National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • Harold I. Feldman, M.D., MSCE, Study Director, University of Pennsylvania

References

Feldman HI, Appel LJ, Chertow GM, Cifelli D, Cizman B, Daugirdas J, Fink JC, Franklin-Becker ED, Go AS, Hamm LL, He J, Hostetter T, Hsu CY, Jamerson K, Joffe M, Kusek JW, Landis JR, Lash JP, Miller ER, Mohler ER 3rd, Muntner P, Ojo AO, Rahman M, Townsend RR, Wright JT; Chronic Renal Insufficiency Cohort (CRIC) Study Investigators. The Chronic Renal Insufficiency Cohort (CRIC) Study: Design and Methods. J Am Soc Nephrol. 2003 Jul;14(7 Suppl 2):S148-53.

Wimmer NJ, Townsend RR, Joffe MM, Lash JP, Go AS; Chronic Renal Insufficiency Cohort Study Investigators. Correlation between pulse wave velocity and other measures of arterial stiffness in chronic kidney disease. Clin Nephrol. 2007 Sep;68(3):133-43. Erratum in: Clin Nephrol. 2011 Dec;76(6):507.

Stevens LA, Coresh J, Feldman HI, Greene T, Lash JP, Nelson RG, Rahman M, Deysher AE, Zhang YL, Schmid CH, Levey AS. Evaluation of the modification of diet in renal disease study equation in a large diverse population. J Am Soc Nephrol. 2007 Oct;18(10):2749-57. Epub 2007 Sep 12.

Citations Reporting on Results

Xie D, Joffe MM, Brunelli SM, Beck G, Chertow GM, Fink JC, Greene T, Hsu CY, Kusek JW, Landis R, Lash J, Levey AS, O'Conner A, Ojo A, Rahman M, Townsend RR, Wang H, Feldman HI. A comparison of change in measured and estimated glomerular filtration rate in patients with nondiabetic kidney disease. Clin J Am Soc Nephrol. 2008 Sep;3(5):1332-8. doi: 10.2215/CJN.05631207. Epub 2008 Jul 30.

Lash JP, Go AS, Appel LJ, He J, Ojo A, Rahman M, Townsend RR, Xie D, Cifelli D, Cohan J, Fink JC, Fischer MJ, Gadegbeku C, Hamm LL, Kusek JW, Landis JR, Narva A, Robinson N, Teal V, Feldman HI; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Chronic Renal Insufficiency Cohort (CRIC) Study: baseline characteristics and associations with kidney function. Clin J Am Soc Nephrol. 2009 Aug;4(8):1302-11. doi: 10.2215/CJN.00070109. Epub 2009 Jun 18. Erratum in: Clin J Am Soc Nephrol. 2011 Oct;6(10):2548-53.

DeLoach SS, Appel LJ, Chen J, Joffe MM, Gadegbeku CA, Mohler ER 3rd, Parsa A, Perumal K, Rafey MA, Steigerwalt SP, Teal V, Townsend RR, Rosas SE. Aortic pulse pressure is associated with carotid IMT in chronic kidney disease: report from Chronic Renal Insufficiency Cohort. Am J Hypertens. 2009 Dec;22(12):1235-41. doi: 10.1038/ajh.2009.156. Epub 2009 Sep 24. Erratum in: Am J Hypertens. 2010 Apr;23(4):449. Am J Hypertens. 2011 Dec;24(12):1346.

Muntner P, Anderson A, Charleston J, Chen Z, Ford V, Makos G, O'Connor A, Perumal K, Rahman M, Steigerwalt S, Teal V, Townsend R, Weir M, Wright JT Jr; Chronic Renal Insufficiency Cohort (CRIC) Study Investigators. Hypertension awareness, treatment, and control in adults with CKD: results from the Chronic Renal Insufficiency Cohort (CRIC) Study. Am J Kidney Dis. 2010 Mar;55(3):441-51. doi: 10.1053/j.ajkd.2009.09.014. Epub 2009 Dec 5.

Joffe M, Hsu CY, Feldman HI, Weir M, Landis JR, Hamm LL; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Variability of creatinine measurements in clinical laboratories: results from the CRIC study. Am J Nephrol. 2010;31(5):426-34. doi: 10.1159/000296250. Epub 2010 Apr 14.

Yaffe K, Ackerson L, Kurella Tamura M, Le Blanc P, Kusek JW, Sehgal AR, Cohen D, Anderson C, Appel L, Desalvo K, Ojo A, Seliger S, Robinson N, Makos G, Go AS; Chronic Renal Insufficiency Cohort Investigators. Chronic kidney disease and cognitive function in older adults: findings from the chronic renal insufficiency cohort cognitive study. J Am Geriatr Soc. 2010 Feb;58(2):338-45. doi: 10.1111/j.1532-5415.2009.02670.x. Epub 2010 Jan 26.

Townsend RR, Wimmer NJ, Chirinos JA, Parsa A, Weir M, Perumal K, Lash JP, Chen J, Steigerwalt SP, Flack J, Go AS, Rafey M, Rahman M, Sheridan A, Gadegbeku CA, Robinson NA, Joffe M. Aortic PWV in chronic kidney disease: a CRIC ancillary study. Am J Hypertens. 2010 Mar;23(3):282-9. doi: 10.1038/ajh.2009.240. Epub 2009 Dec 17.

Gutiérrez OM, Anderson C, Isakova T, Scialla J, Negrea L, Anderson AH, Bellovich K, Chen J, Robinson N, Ojo A, Lash J, Feldman HI, Wolf M; CRIC Study Group. Low socioeconomic status associates with higher serum phosphate irrespective of race. J Am Soc Nephrol. 2010 Nov;21(11):1953-60. doi: 10.1681/ASN.2010020221. Epub 2010 Sep 16.

Grunwald JE, Alexander J, Maguire M, Whittock R, Parker C, McWilliams K, Lo JC, Townsend R, Gadegbeku CA, Lash JP, Fink JC, Rahman M, Feldman H, Kusek J, Ojo A; CRIC Study Group. Prevalence of ocular fundus pathology in patients with chronic kidney disease. Clin J Am Soc Nephrol. 2010 May;5(5):867-73. doi: 10.2215/CJN.08271109. Epub 2010 Mar 18.

Soliman EZ, Prineas RJ, Go AS, Xie D, Lash JP, Rahman M, Ojo A, Teal VL, Jensvold NG, Robinson NL, Dries DL, Bazzano L, Mohler ER, Wright JT, Feldman HI; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Chronic kidney disease and prevalent atrial fibrillation: the Chronic Renal Insufficiency Cohort (CRIC). Am Heart J. 2010 Jun;159(6):1102-7. doi: 10.1016/j.ahj.2010.03.027. Erratum in: Am Heart J. 2010 Dec;160(6):1190. Am Heart J. 2011 Oct;162(4):794.

Townsend RR, Chirinos JA, Parsa A, Weir MA, Sozio SM, Lash JP, Chen J, Steigerwalt SP, Go AS, Hsu CY, Rafey M, Wright JT Jr, Duckworth MJ, Gadegbeku CA, Joffe MP; Chronic Renal Insufficiency Cohort Investigators. Central pulse pressure in chronic kidney disease: a chronic renal insufficiency cohort ancillary study. Hypertension. 2010 Sep;56(3):518-24. doi: 10.1161/HYPERTENSIONAHA.110.153924. Epub 2010 Jul 26. Erratum in: Hypertension. 2012 Jan;59(1):e3-5.

Townsend RR, Anderson AH, Chen J, Gadebegku CA, Feldman HI, Fink JC, Go AS, Joffe M, Nessel LA, Ojo A, Rader DJ, Reilly MP, Teal V, Teff K, Wright JT, Xie D. Metabolic syndrome, components, and cardiovascular disease prevalence in chronic kidney disease: findings from the Chronic Renal Insufficiency Cohort (CRIC) Study. Am J Nephrol. 2011;33(6):477-84. doi: 10.1159/000327618. Epub 2011 Apr 27. Erratum in: Am J Nephrol. 2012;35(2):208.

Kurella Tamura M, Xie D, Yaffe K, Cohen DL, Teal V, Kasner SE, Messé SR, Sehgal AR, Kusek J, DeSalvo KB, Cornish-Zirker D, Cohan J, Seliger SL, Chertow GM, Go AS. Vascular risk factors and cognitive impairment in chronic kidney disease: the Chronic Renal Insufficiency Cohort (CRIC) study. Clin J Am Soc Nephrol. 2011 Feb;6(2):248-56. doi: 10.2215/CJN.02660310. Epub 2010 Oct 7.

Hsu CY, Propert K, Xie D, Hamm L, He J, Miller E, Ojo A, Shlipak M, Teal V, Townsend R, Weir M, Wilson J, Feldman H; CRIC Investigators. Measured GFR does not outperform estimated GFR in predicting CKD-related complications. J Am Soc Nephrol. 2011 Oct;22(10):1931-7. doi: 10.1681/ASN.2010101077. Epub 2011 Sep 15.

Shlipak MG, Lash JP, Yang W, Teal V, Keane M, Cappola T, Keller C, Jamerson K, Kusek J, Delafontaine P, He J, Miller ER 3rd, Schreiber M, Go AS; CRIC Investigators. Symptoms characteristic of heart failure among CKD patients without diagnosed heart failure. J Card Fail. 2011 Jan;17(1):17-23. doi: 10.1016/j.cardfail.2010.08.009.

Isakova T, Anderson CA, Leonard MB, Xie D, Gutiérrez OM, Rosen LK, Theurer J, Bellovich K, Steigerwalt SP, Tang I, Anderson AH, Townsend RR, He J, Feldman HI, Wolf M; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Diuretics, calciuria and secondary hyperparathyroidism in the Chronic Renal Insufficiency Cohort. Nephrol Dial Transplant. 2011 Apr;26(4):1258-65. doi: 10.1093/ndt/gfr026. Epub 2011 Mar 7.

Weir MR, Townsend RR, Fink JC, Teal V, Anderson C, Appel L, Chen J, He J, Litbarg N, Ojo A, Rahman M, Rosen L, Sozio SM, Steigerwalt S, Strauss L, Joffe MM. Hemodynamic correlates of proteinuria in chronic kidney disease. Clin J Am Soc Nephrol. 2011 Oct;6(10):2403-10. doi: 10.2215/CJN.01670211. Epub 2011 Aug 18.

Fischer MJ, Go AS, Lora CM, Ackerson L, Cohan J, Kusek JW, Mercado A, Ojo A, Ricardo AC, Rosen LK, Tao K, Xie D, Feldman HI, Lash JP; CRIC and H-CRIC Study Groups. CKD in Hispanics: Baseline characteristics from the CRIC (Chronic Renal Insufficiency Cohort) and Hispanic-CRIC Studies. Am J Kidney Dis. 2011 Aug;58(2):214-27. doi: 10.1053/j.ajkd.2011.05.010. Epub 2011 Jun 25.

Budoff MJ, Rader DJ, Reilly MP, Mohler ER 3rd, Lash J, Yang W, Rosen L, Glenn M, Teal V, Feldman HI; CRIC Study Investigators. Relationship of estimated GFR and coronary artery calcification in the CRIC (Chronic Renal Insufficiency Cohort) Study. Am J Kidney Dis. 2011 Oct;58(4):519-26. doi: 10.1053/j.ajkd.2011.04.024. Epub 2011 Jul 23.

Scialla JJ, Leonard MB, Townsend RR, Appel L, Wolf M, Budoff MJ, Chen J, Lustigova E, Gadegbeku CA, Glenn M, Hanish A, Raj D, Rosas SE, Seliger SL, Weir MR, Parekh RS; CRIC Study Group. Correlates of osteoprotegerin and association with aortic pulse wave velocity in patients with chronic kidney disease. Clin J Am Soc Nephrol. 2011 Nov;6(11):2612-9. doi: 10.2215/CJN.03910411. Epub 2011 Sep 22.

Ricardo AC, Lash JP, Fischer MJ, Lora CM, Budoff M, Keane MG, Kusek JW, Martinez M, Nessel L, Stamos T, Ojo A, Rahman M, Soliman EZ, Yang W, Feldman HI, Go AS; CRIC and HCRIC Investigators. Cardiovascular disease among hispanics and non-hispanics in the chronic renal insufficiency cohort (CRIC) study. Clin J Am Soc Nephrol. 2011 Sep;6(9):2121-31. doi: 10.2215/CJN.11341210.

Isakova T, Wahl P, Vargas GS, Gutiérrez OM, Scialla J, Xie H, Appleby D, Nessel L, Bellovich K, Chen J, Hamm L, Gadegbeku C, Horwitz E, Townsend RR, Anderson CA, Lash JP, Hsu CY, Leonard MB, Wolf M. Fibroblast growth factor 23 is elevated before parathyroid hormone and phosphate in chronic kidney disease. Kidney Int. 2011 Jun;79(12):1370-8. doi: 10.1038/ki.2011.47. Epub 2011 Mar 9. Erratum in: Kidney Int. 2012 Aug;82(4):498.

Faul C, Amaral AP, Oskouei B, Hu MC, Sloan A, Isakova T, Gutiérrez OM, Aguillon-Prada R, Lincoln J, Hare JM, Mundel P, Morales A, Scialla J, Fischer M, Soliman EZ, Chen J, Go AS, Rosas SE, Nessel L, Townsend RR, Feldman HI, St John Sutton M, Ojo A, Gadegbeku C, Di Marco GS, Reuter S, Kentrup D, Tiemann K, Brand M, Hill JA, Moe OW, Kuro-O M, Kusek JW, Keane MG, Wolf M. FGF23 induces left ventricular hypertrophy. J Clin Invest. 2011 Nov;121(11):4393-408. doi: 10.1172/JCI46122. Epub 2011 Oct 10.

Isakova T, Xie H, Yang W, Xie D, Anderson AH, Scialla J, Wahl P, Gutiérrez OM, Steigerwalt S, He J, Schwartz S, Lo J, Ojo A, Sondheimer J, Hsu CY, Lash J, Leonard M, Kusek JW, Feldman HI, Wolf M; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Fibroblast growth factor 23 and risks of mortality and end-stage renal disease in patients with chronic kidney disease. JAMA. 2011 Jun 15;305(23):2432-9. doi: 10.1001/jama.2011.826.

Anderson AH, Yang W, Hsu CY, Joffe MM, Leonard MB, Xie D, Chen J, Greene T, Jaar BG, Kao P, Kusek JW, Landis JR, Lash JP, Townsend RR, Weir MR, Feldman HI; CRIC Study Investigators. Estimating GFR among participants in the Chronic Renal Insufficiency Cohort (CRIC) Study. Am J Kidney Dis. 2012 Aug;60(2):250-61. doi: 10.1053/j.ajkd.2012.04.012. Epub 2012 Jun 2.

He J, Reilly M, Yang W, Chen J, Go AS, Lash JP, Rahman M, DeFilippi C, Gadegbeku C, Kanthety R, Tao K, Hamm LL, Ojo A, Townsend R, Budoff M; CRIC Investigators. Risk factors for coronary artery calcium among patients with chronic kidney disease (from the Chronic Renal Insufficiency Cohort Study). Am J Cardiol. 2012 Dec 15;110(12):1735-41. doi: 10.1016/j.amjcard.2012.07.044. Epub 2012 Sep 14.

Fischer MJ, Xie D, Jordan N, Kop WJ, Krousel-Wood M, Kurella Tamura M, Kusek JW, Ford V, Rosen LK, Strauss L, Teal VL, Yaffe K, Powe NR, Lash JP; CRIC Study Group Investigators. Factors associated with depressive symptoms and use of antidepressant medications among participants in the Chronic Renal Insufficiency Cohort (CRIC) and Hispanic-CRIC Studies. Am J Kidney Dis. 2012 Jul;60(1):27-38. doi: 10.1053/j.ajkd.2011.12.033. Epub 2012 Apr 11.

Chen J, Mohler ER 3rd, Xie D, Shlipak MG, Townsend RR, Appel LJ, Raj DS, Ojo AO, Schreiber MJ, Strauss LF, Zhang X, Wang X, He J, Hamm LL; CRIC Investigators. Risk factors for peripheral arterial disease among patients with chronic kidney disease. Am J Cardiol. 2012 Jul 1;110(1):136-41. doi: 10.1016/j.amjcard.2012.02.061. Epub 2012 Mar 31.

Adeseun GA, Xie D, Wang X, Joffe MM, Mohler ER 3rd, Townsend RR, Budoff M, Rosas SE. Carotid plaque, carotid intima-media thickness, and coronary calcification equally discriminate prevalent cardiovascular disease in kidney disease. Am J Nephrol. 2012;36(4):342-7. doi: 10.1159/000342794. Epub 2012 Sep 26.

Wahl P, Xie H, Scialla J, Anderson CA, Bellovich K, Brecklin C, Chen J, Feldman H, Gutierrez OM, Lash J, Leonard MB, Negrea L, Rosas SE, Anderson AH, Townsend RR, Wolf M, Isakova T; Chronic Renal Insufficiency Cohort Study Group. Earlier onset and greater severity of disordered mineral metabolism in diabetic patients with chronic kidney disease. Diabetes Care. 2012 May;35(5):994-1001. doi: 10.2337/dc11-2235. Epub 2012 Mar 23.

Lora CM, Ricardo AC, Brecklin CS, Fischer MJ, Rosman RT, Carmona E, Lopez A, Balaram M, Nessel L, Tao KK, Xie D, Kusek JW, Go AS, Lash JP. Recruitment of Hispanics into an observational study of chronic kidney disease: the Hispanic Chronic Renal Insufficiency Cohort Study experience. Contemp Clin Trials. 2012 Nov;33(6):1238-44. doi: 10.1016/j.cct.2012.07.012. Epub 2012 Jul 27.

Grunwald JE, Alexander J, Ying GS, Maguire M, Daniel E, Whittock-Martin R, Parker C, McWilliams K, Lo JC, Go A, Townsend R, Gadegbeku CA, Lash JP, Fink JC, Rahman M, Feldman H, Kusek JW, Xie D, Jaar BG; CRIC Study Group. Retinopathy and chronic kidney disease in the Chronic Renal Insufficiency Cohort (CRIC) study. Arch Ophthalmol. 2012 Sep;130(9):1136-44.

Grunwald JE, Ying GS, Maguire M, Pistilli M, Daniel E, Alexander J, Whittock-Martin R, Parker C, Mohler E, Lo JC, Townsend R, Gadegbeku CA, Lash JP, Fink JC, Rahman M, Feldman H, Kusek JW, Xie D, Coleman M, Keane MG; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Association between retinopathy and cardiovascular disease in patients with chronic kidney disease (from the Chronic Renal Insufficiency Cohort [CRIC] Study). Am J Cardiol. 2012 Jul 15;110(2):246-53. doi: 10.1016/j.amjcard.2012.03.014. Epub 2012 Apr 18.

Scialla JJ, Appel LJ, Wolf M, Yang W, Zhang X, Sozio SM, Miller ER 3rd, Bazzano LA, Cuevas M, Glenn MJ, Lustigova E, Kallem RR, Porter AC, Townsend RR, Weir MR, Anderson CA; Chronic Renal Insufficiency Cohort-CRIC Study Group. Plant protein intake is associated with fibroblast growth factor 23 and serum bicarbonate levels in patients with chronic kidney disease: the Chronic Renal Insufficiency Cohort study. J Ren Nutr. 2012 Jul;22(4):379-388.e1. doi: 10.1053/j.jrn.2012.01.026. Epub 2012 Apr 4.

Weir MR, Townsend RR, Fink JC, Teal V, Sozio SM, Anderson CA, Appel LJ, Turban S, Chen J, He J, Litbarg N, Ojo A, Rahman M, Rosen L, Steigerwalt S, Strauss L, Joffe MM. Urinary sodium is a potent correlate of proteinuria: lessons from the chronic renal insufficiency cohort study. Am J Nephrol. 2012;36(5):397-404. doi: 10.1159/000342966. Epub 2012 Oct 12.

Gupta J, Mitra N, Kanetsky PA, Devaney J, Wing MR, Reilly M, Shah VO, Balakrishnan VS, Guzman NJ, Girndt M, Periera BG, Feldman HI, Kusek JW, Joffe MM, Raj DS; CRIC Study Investigators. Association between albuminuria, kidney function, and inflammatory biomarker profile in CKD in CRIC. Clin J Am Soc Nephrol. 2012 Dec;7(12):1938-46. doi: 10.2215/CJN.03500412. Epub 2012 Sep 27.

Park M, Hsu CY, Li Y, Mishra RK, Keane M, Rosas SE, Dries D, Xie D, Chen J, He J, Anderson A, Go AS, Shlipak MG; Chronic Renal Insufficiency Cohort (CRIC) Study Group. Associations between kidney function and subclinical cardiac abnormalities in CKD. J Am Soc Nephrol. 2012 Oct;23(10):1725-34. Epub 2012 Aug 30.

Yaffe K, Ackerson L, Hoang TD, Go AS, Maguire MG, Ying GS, Daniel E, Bazzano LA, Coleman M, Cohen DL, Kusek JW, Ojo A, Seliger S, Xie D, Grunwald JE; CRIC Study Investigators. Retinopathy and cognitive impairment in adults with CKD. Am J Kidney Dis. 2013 Feb;61(2):219-27. doi: 10.1053/j.ajkd.2012.10.006. Epub 2012 Dec 1.

Munoz Mendoza J, Isakova T, Ricardo AC, Xie H, Navaneethan SD, Anderson AH, Bazzano LA, Xie D, Kretzler M, Nessel L, Hamm LL, Negrea L, Leonard MB, Raj D, Wolf M; Chronic Renal Insufficiency Cohort. Fibroblast growth factor 23 and Inflammation in CKD. Clin J Am Soc Nephrol. 2012 Jul;7(7):1155-62. doi: 10.2215/CJN.13281211. Epub 2012 May 3.

Margolis DJ, Gupta J, Thom SR, Townsend RR, Kanetsky PA, Hoffstad O, Papdopoulos M, Fischer M, Schelling JR, Mitra N. Diabetes, lower extremity amputation, loss of protective sensation, and neuronal nitric oxide synthase associated protein in the chronic renal insufficiency cohort study. Wound Repair Regen. 2013 Jan-Feb;21(1):17-24. doi: 10.1111/j.1524-475X.2012.00866.x. Epub 2012 Dec 10.

Ricardo AC, Hacker E, Lora CM, Ackerson L, DeSalvo KB, Go A, Kusek JW, Nessel L, Ojo A, Townsend RR, Xie D, Ferrans CE, Lash JP; CRIC Investigators. Validation of the Kidney Disease Quality of Life Short Form 36 (KDQOL-36) US Spanish and English versions in a cohort of Hispanics with chronic kidney disease. Ethn Dis. 2013 Spring;23(2):202-9.

Bansal N, Keane M, Delafontaine P, Dries D, Foster E, Gadegbeku CA, Go AS, Hamm LL, Kusek JW, Ojo AO, Rahman M, Tao K, Wright JT, Xie D, Hsu CY; CRIC Study Investigators. A longitudinal study of left ventricular function and structure from CKD to ESRD: the CRIC study. Clin J Am Soc Nephrol. 2013 Mar;8(3):355-62. doi: 10.2215/CJN.06020612. Epub 2013 Feb 14.

Ferguson JF, Matthews GJ, Townsend RR, Raj DS, Kanetsky PA, Budoff M, Fischer MJ, Rosas SE, Kanthety R, Rahman M, Master SR, Qasim A, Li M, Mehta NN, Shen H, Mitchell BD, O'Connell JR, Shuldiner AR, Ho WK, Young R, Rasheed A, Danesh J, He J, Kusek JW, Ojo AO, Flack J, Go AS, Gadegbeku CA, Wright JT Jr, Saleheen D, Feldman HI, Rader DJ, Foulkes AS, Reilly MP; CRIC Study Principal Investigators. Candidate gene association study of coronary artery calcification in chronic kidney disease: findings from the CRIC study (Chronic Renal Insufficiency Cohort). J Am Coll Cardiol. 2013 Aug 27;62(9):789-98. doi: 10.1016/j.jacc.2013.01.103. Epub 2013 May 30.

Mishra RK, Li Y, DeFilippi C, Fischer MJ, Yang W, Keane M, Chen J, He J, Kallem R, Horwitz EJ, Rafey M, Raj DS, Go AS, Shlipak MG; CRIC Study Investigators. Association of cardiac troponin T with left ventricular structure and function in CKD. Am J Kidney Dis. 2013 May;61(5):701-9. doi: 10.1053/j.ajkd.2012.11.034. Epub 2013 Jan 4.

Mishra RK, Li Y, Ricardo AC, Yang W, Keane M, Cuevas M, Christenson R, deFilippi C, Chen J, He J, Kallem RR, Raj DS, Schelling JR, Wright J, Go AS, Shlipak MG; Chronic Renal Insufficiency Cohort Investigators. Association of N-terminal pro-B-type natriuretic peptide with left ventricular structure and function in chronic kidney disease (from the Chronic Renal Insufficiency Cohort [CRIC]). Am J Cardiol. 2013 Feb 1;111(3):432-8. doi: 10.1016/j.amjcard.2012.10.019. Epub 2012 Nov 22.

Scialla JJ, Lau WL, Reilly MP, Isakova T, Yang HY, Crouthamel MH, Chavkin NW, Rahman M, Wahl P, Amaral AP, Hamano T, Master SR, Nessel L, Chai B, Xie D, Kallem RR, Chen J, Lash JP, Kusek JW, Budoff MJ, Giachelli CM, Wolf M; Chronic Renal Insufficiency Cohort Study Investigators. Fibroblast growth factor 23 is not associated with and does not induce arterial calcification. Kidney Int. 2013 Jun;83(6):1159-68. doi: 10.1038/ki.2013.3. Epub 2013 Feb 6.

Liu KD, Yang W, Anderson AH, Feldman HI, Demirjian S, Hamano T, He J, Lash J, Lustigova E, Rosas SE, Simonson MS, Tao K, Hsu CY; Chronic Renal Insufficiency Cohort (CRIC) study investigators. Urine neutrophil gelatinase-associated lipocalin levels do not improve risk prediction of progressive chronic kidney disease. Kidney Int. 2013 May;83(5):909-14. doi: 10.1038/ki.2012.458. Epub 2013 Jan 23.

Dobre M, Yang W, Chen J, Drawz P, Hamm LL, Horwitz E, Hostetter T, Jaar B, Lora CM, Nessel L, Ojo A, Scialla J, Steigerwalt S, Teal V, Wolf M, Rahman M; CRIC Investigators. Association of serum bicarbonate with risk of renal and cardiovascular outcomes in CKD: a report from the Chronic Renal Insufficiency Cohort (CRIC) study. Am J Kidney Dis. 2013 Oct;62(4):670-8. doi: 10.1053/j.ajkd.2013.01.017. Epub 2013 Mar 13.

Ky B, Shults J, Keane MG, Sutton MS, Wolf M, Feldman HI, Reese PP, Anderson CA, Townsend RR, Deo R, Lo J, Gadegbeku C, Carlow D, Sulik MJ, Leonard MB; CRIC Study Investigators. FGF23 modifies the relationship between vitamin D and cardiac remodeling. Circ Heart Fail. 2013 Jul;6(4):817-24. doi: 10.1161/CIRCHEARTFAILURE.112.000105. Epub 2013 Jun 7.

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