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Fernando Velayos, MD

TitleClinical Professor
SchoolUCSF School of Medicine
DepartmentMedicine
Address1701 Divisadero
San Francisco CA 94115
Phone415-502-4444
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    Collapse Biography 
    Collapse Education and Training
    University of California, San FranciscoM.D.1996 Medicine
    University of California, San Francisco Residency School of Medicine

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    Collapse Clinical Trials

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    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. Regueiro M, Velayos F, Greer JB, Bougatsos C, Chou R, Sultan S, Singh S. American Gastroenterological Association Technical Review on the Management of Crohn's Disease After Surgical Resection. Gastroenterology. 2016 Nov 10. PMID: 27840073.
      View in: PubMed
    2. Velayos F, Kathpalia P, Finlayson E. Changing Paradigms in Detection of Dysplasia and Management of Patients with Inflammatory Bowel Diseases-is Colectomy Still Necessary? Gastroenterology. 2016 Oct 17. PMID: 27765687.
      View in: PubMed
    3. Devlin SM, Melmed GY, Irving PM, Rubin DT, Kornbluth A, Kozuch PL, Raffals LE, Velayos F, Sparrow MP, Baidoo L, Bressler B, Cheifetz AS, Jones J, Kaplan GG, Siegel CA. Recommendations for Quality Colonoscopy Reporting for Patients with Inflammatory Bowel Disease: Results from a RAND Appropriateness Panel. Inflamm Bowel Dis. 2016 Jun; 22(6):1418-24. PMID: 27057680.
      View in: PubMed
    4. Melmed GY, Irving PM, Jones J, Kaplan GG, Kozuch PL, Velayos F, Baidoo L, Sparrow MP, Bressler B, Cheifetz AS, Devlin SM, Raffals LE, Vande Casteele N, Mould DR, Colombel JF, Dubinsky M, Sandborn WJ, Siegel CA. Appropriateness of Testing for Anti-Tumor Necrosis Factor Agent and Antibody Concentrations, and Interpretation of Results. Clin Gastroenterol Hepatol. 2016 Sep; 14(9):1302-9. PMID: 27189916.
      View in: PubMed
    5. Sanduleanu S, Kaltenbach T, Barkun A, McCabe RP, Velayos F, Picco MF, Laine L, Soetikno R, McQuaid KR. A roadmap to the implementation of chromoendoscopy in inflammatory bowel disease colonoscopy surveillance practice. Gastrointest Endosc. 2016 Jan; 83(1):213-22. PMID: 26364967.
      View in: PubMed
    6. Jones JL, Kaplan GG, Peyrin-Biroulet L, Baidoo L, Devlin S, Melmed GY, Tanyingoh D, Raffals L, Irving P, Kozuch P, Sparrow M, Velayos F, Bressler B, Cheifetz A, Colombel JF, Siegel CA. Effects of Concomitant Immunomodulator Therapy on Efficacy and Safety of Anti-Tumor Necrosis Factor Therapy for Crohn's Disease: A Meta-analysis of Placebo-controlled Trials. Clin Gastroenterol Hepatol. 2015 Dec; 13(13):2233-2240.e2. PMID: 26142167.
      View in: PubMed
    7. Day LW, Velayos F. Colorectal cancer screening and surveillance in the elderly: updates and controversies. Gut Liver. 2015 Mar; 9(2):143-51. PMID: 25721001; PMCID: PMC4351019.
    8. Day LW, Velayos F. Colorectal cancer of the elderly. Curr Treat Options Gastroenterol. 2014 Sep; 12(3):269-82. PMID: 24938590.
      View in: PubMed
    9. Nett A, Velayos F, McQuaid K. Quality bowel preparation for surveillance colonoscopy in patients with inflammatory bowel disease is a must. Gastrointest Endosc Clin N Am. 2014 Jul; 24(3):379-92. PMID: 24975529.
      View in: PubMed
    10. Long MD, Hutfless S, Kappelman MD, Khalili H, Kaplan GG, Bernstein CN, Colombel JF, Gower-Rousseau C, Herrinton L, Velayos F, Loftus EV, Nguyen GC, Ananthakrishnan AN, Sonnenberg A, Chan A, Sandler RS, Atreja A, Shah SA, Rothman KJ, Leleiko NS, Bright R, Boffetta P, Myers KD, Sands BE. Challenges in designing a national surveillance program for inflammatory bowel disease in the United States. Inflamm Bowel Dis. 2014 Feb; 20(2):398-415. PMID: 24280882; PMCID: PMC4610029.
    11. Day LW, Velayos F. Colorectal cancer and the elderly. Clin Geriatr Med. 2014 Feb; 30(1):117-31. PMID: 24267607.
      View in: PubMed
    12. Hwang C, Velayos F. On the question of ethnicity and its impact on IBD-related outcomes. Dig Dis Sci. 2014 Jan; 59(1):19-21. PMID: 24282056.
      View in: PubMed
    13. Velayos F. Reply: To PMID 23357488. Clin Gastroenterol Hepatol. 2014 Feb; 12(2):346. PMID: 24216468.
      View in: PubMed
    14. Li D, Collins B, Velayos F, Liu L, Lewis JD, Allison JE, Flowers NT, Hutfless S, Abramson O, Herrinton LJ. Racial and ethnic differences in health care utilization and outcomes among ulcerative colitis patients in an integrated health-care organization. Dig Dis Sci. 2014 Feb; 59(2):287-94. PMID: 24173809.
      View in: PubMed
    15. Siao D, Velayos F. Avoiding rash decision making: skin cancer screening of patients with inflammatory bowel disease. Clin Gastroenterol Hepatol. 2014 Feb; 12(2):274-6. PMID: 24183955.
      View in: PubMed
    16. Truta B, Li DX, Mahadevan U, Fisher ER, Chen YY, Grace K, Velayos F, Terdiman JP. Serologic markers associated with development of Crohn's disease after ileal pouch anal anastomosis for ulcerative colitis. Dig Dis Sci. 2014 Jan; 59(1):135-45. PMID: 24091907.
      View in: PubMed
    17. Velayos F, Ullman TA. Looking forward to understanding and reducing colorectal cancer risk in inflammatory bowel disease. Gastroenterology. 2013 Jul; 145(1):47-9. PMID: 23727492.
      View in: PubMed
    18. Sewell JL, Velayos F. Systematic review: The role of race and socioeconomic factors on IBD healthcare delivery and effectiveness. Inflamm Bowel Dis. 2013 Mar; 19(3):627-43. PMID: 22623078; PMCID: PMC3905682.
    19. Velayos F, Kahn JG, Sandborn WJ, Feagan BG. A test-based strategy is more cost effective than empiric dose escalation for patients with Crohn's disease who lose responsiveness to infliximab. Clin Gastroenterol Hepatol. 2013 Jun; 11(6):654-66. PMID: 23357488.
      View in: PubMed
    20. Akbari M, Shah S, Velayos F, Mahadevan U, Cheifetz AS. Systematic review and meta-analysis on the effects of thiopurines on birth outcomes from female and male patients with inflammatory bowel disease. Inflamm Bowel Dis. 2013 Jan; 19(1):15-22. PMID: 22434610.
      View in: PubMed
    21. Herrinton LJ, Liu L, Levin TR, Allison JE, Lewis JD, Velayos F. Incidence and mortality of colorectal adenocarcinoma in persons with inflammatory bowel disease from 1998 to 2010. Gastroenterology. 2012 Aug; 143(2):382-9. PMID: 22609382.
      View in: PubMed
    22. Sai VF, Velayos F, Neuhaus J, Westphalen AC. Colonoscopy after CT diagnosis of diverticulitis to exclude colon cancer: a systematic literature review. Radiology. 2012 May; 263(2):383-90. PMID: 22517956; PMCID: PMC3329267.
    23. Velayos F. Managing risks of neoplasia in inflammatory bowel disease. Curr Gastroenterol Rep. 2012 Apr; 14(2):174-80. PMID: 22359106.
      View in: PubMed
    24. Cheifetz AS, Melmed GY, Spiegel B, Talley J, Devlin SM, Raffals L, Irving PM, Jones J, Kaplan GG, Kozuch P, Sparrow M, Velayos F, Baidoo L, Bressler B, Siegel CA. Setting priorities for comparative effectiveness research in inflammatory bowel disease: results of an international provider survey, expert RAND panel, and patient focus groups. Inflamm Bowel Dis. 2012 Dec; 18(12):2294-300. PMID: 22337359.
      View in: PubMed
    25. Lin KK, Velayos F, Fisher E, Terdiman JP. Durability of infliximab dose intensification in Crohn's disease. Dig Dis Sci. 2012 Apr; 57(4):1013-9. PMID: 22089254.
      View in: PubMed
    26. Day LW, Walter LC, Velayos F. Colorectal cancer screening and surveillance in the elderly patient. Am J Gastroenterol. 2011 Jul; 106(7):1197-206;quiz 1207. PMID: 21519362.
      View in: PubMed
    27. Siao D, Velayos F. The good, the bad, and the ugly: adverse events and Crohn's therapies. Inflamm Bowel Dis. 2010 Aug; 16(8):1443-4. PMID: 19834975.
      View in: PubMed
    28. Velayos F, Liu L, Lewis JD, Allison JE, Flowers N, Hutfless S, Abramson O, Perry GS, Herrinton LJ. Prevalence of colorectal cancer surveillance for ulcerative colitis in an integrated health care delivery system. Gastroenterology. 2010 Nov; 139(5):1511-8. PMID: 20659470.
      View in: PubMed
    29. Siao D, Velayos F. Surgery for low-grade colorectal dysplasia in ulcerative colitis: decisions, decisions. Inflamm Bowel Dis. 2010 Jul; 16(7):1265-6. PMID: 19856420.
      View in: PubMed
    30. Hou JK, Velayos F, Terrault N, Mahadevan U. Viral hepatitis and inflammatory bowel disease. Inflamm Bowel Dis. 2010 Jun; 16(6):925-32. PMID: 20480515.
      View in: PubMed
    31. Melmed GY, Spiegel BM, Bressler B, Cheifetz AS, Devlin SM, Harrell LE, Irving PM, Jones J, Kaplan GG, Kozuch PL, Velayos F, Baidoo L, Sparrow MP, Siegel CA. The appropriateness of concomitant immunomodulators with anti-tumor necrosis factor agents for Crohn's disease: one size does not fit all. Clin Gastroenterol Hepatol. 2010 Aug; 8(8):655-9. PMID: 20451665.
      View in: PubMed
    32. Abramson O, Durant M, Mow W, Finley A, Kodali P, Wong A, Tavares V, McCroskey E, Liu L, Lewis JD, Allison JE, Flowers N, Hutfless S, Velayos F, Perry GS, Cannon R, Herrinton LJ. Incidence, prevalence, and time trends of pediatric inflammatory bowel disease in Northern California, 1996 to 2006. J Pediatr. 2010 Aug; 157(2):233-239.e1. PMID: 20400099.
      View in: PubMed
    33. Velayos F, Sandborn WJ. Use of azathioprine and 6MP in postoperative Crohn's: changing natural history or just along for the ride? Am J Gastroenterol. 2009 Aug; 104(8):2097-9. PMID: 19661939.
      View in: PubMed
    34. Lewis JD, Abramson O, Pascua M, Liu L, Asakura LM, Velayos F, Hutfless SM, Alison JE, Herrinton LJ. Timing of myelosuppression during thiopurine therapy for inflammatory bowel disease: implications for monitoring recommendations. Clin Gastroenterol Hepatol. 2009 Nov; 7(11):1195-201; quiz 1141-2. PMID: 19631285; PMCID: PMC4435979.
    35. Rubenstein JH, Waljee AK, Jeter JM, Velayos F, Ladabaum U, Higgins PD. Cost effectiveness of ulcerative colitis surveillance in the setting of 5-aminosalicylates. Am J Gastroenterol. 2009 Sep; 104(9):2222-32. PMID: 19491824; PMCID: PMC2764368.
    36. Velayos F. Deciding to operate for low-grade colorectal dysplasia in ulcerative colitis: how much does the colon cost, how much is it worth? Gastrointest Endosc. 2009 Jun; 69(7):1311-3. PMID: 19481651.
      View in: PubMed
    37. Herrinton LJ, Liu L, Fireman B, Lewis JD, Allison JE, Flowers N, Hutfless S, Velayos F, Abramson O, Altschuler A, Perry GS. Time trends in therapies and outcomes for adult inflammatory bowel disease, Northern California, 1998-2005. Gastroenterology. 2009 Aug; 137(2):502-11. PMID: 19445944.
      View in: PubMed
    38. Ravishankar PG, Velayos F. Forecasting cyclosporine success or failure. Inflamm Bowel Dis. 2009 Jan; 15(1):152-3. PMID: 18465806.
      View in: PubMed
    39. Velayos F. Colon cancer surveillance in inflammatory bowel disease patients: current and emerging practices. Expert Rev Gastroenterol Hepatol. 2008 Dec; 2(6):817-25. PMID: 19090741.
      View in: PubMed
    40. Sparrow MP, Irving PM, Baidoo L, Bressler B, Cheifetz AS, Devlin SM, Harrell LE, Jones J, Kozuch PL, Melmed GY, Velayos F, Siegel CA. Current Controversies in Crohn's Disease: A Roundtable Discussion of the BRIDGe Group. Gastroenterol Hepatol (N Y). 2008 Oct; 4(10):713-20. PMID: 21960891; PMCID: PMC3104182.
    41. Pressman AR, Hutfless S, Velayos F, Fireman B, Lewis JD, Allison J, Abramson O, Herrinton LJ. Patterns of infliximab use among Crohn's disease patients in a community setting. Inflamm Bowel Dis. 2008 Sep; 14(9):1265-72. PMID: 18452199.
      View in: PubMed
    42. Altschuler A, Collins B, Lewis JD, Velayos F, Allison JE, Hutfless S, Liu L, Herrinton LJ. Gastroenterologists' attitudes and self-reported practices regarding inflammatory bowel disease. Inflamm Bowel Dis. 2008 Jul; 14(7):992-9. PMID: 18300277.
      View in: PubMed
    43. Bahamonde LG, Velayos F. The fungus among us. Inflamm Bowel Dis. 2008 May; 14(5):721-2. PMID: 18200515.
      View in: PubMed
    44. Truta B, Chen YY, Blanco AM, Deng G, Conrad PG, Kim YH, Park ET, Kakar S, Kim YS, Velayos F, Sleisenger MH, Terdiman JP. Tumor histology helps to identify Lynch syndrome among colorectal cancer patients. Fam Cancer. 2008; 7(3):267-74. PMID: 18283560.
      View in: PubMed
    45. Rubin DT, Cruz-Correa MR, Gasche C, Jass JR, Lichtenstein GR, Montgomery EA, Riddell RH, Rutter MD, Ullman TA, Velayos F, Itzkowitz S. Colorectal cancer prevention in inflammatory bowel disease and the role of 5-aminosalicylic acid: a clinical review and update. Inflamm Bowel Dis. 2008 Feb; 14(2):265-74. PMID: 17932965.
      View in: PubMed
    46. Lichtenstein GR, Rubin DT, Sabesin SM, Velayos F, Vitat P. Maximizing patient adherence and clinical outcomes with mesalamine in mildly-to-moderately active ulcerative colitis. Rev Gastroenterol Disord. 2008; 8(1):21-30; quiz 31-2. PMID: 18477967.
      View in: PubMed
    47. Velayos F, Sandborn WJ. Positioning biologic therapy for Crohn's disease and ulcerative colitis. Curr Gastroenterol Rep. 2007 Dec; 9(6):521-7. PMID: 18377806.
      View in: PubMed
    48. Velayos F, Mahadevan U. Management of steroid-dependent ulcerative colitis: immunomodulatory agents, biologics, or surgery? Clin Gastroenterol Hepatol. 2007 Jun; 5(6):668-71. PMID: 17544992.
      View in: PubMed
    49. Jess T, Loftus EV, Velayos F, Winther KV, Tremaine WJ, Zinsmeister AR, Scott Harmsen W, Langholz E, Binder V, Munkholm P, Sandborn WJ. Risk factors for colorectal neoplasia in inflammatory bowel disease: a nested case-control study from Copenhagen county, Denmark and Olmsted county, Minnesota. Am J Gastroenterol. 2007 Apr; 102(4):829-36. PMID: 17222314.
      View in: PubMed
    50. Jess T, Loftus EV, Velayos F, Harmsen WS, Zinsmeister AR, Smyrk TC, Tremaine WJ, Melton LJ, Munkholm P, Sandborn WJ. Incidence and prognosis of colorectal dysplasia in inflammatory bowel disease: a population-based study from Olmsted County, Minnesota. Inflamm Bowel Dis. 2006 Aug; 12(8):669-76. PMID: 16917220.
      View in: PubMed
    51. Velayos F, Loftus EV, Jess T, Harmsen WS, Bida J, Zinsmeister AR, Tremaine WJ, Sandborn WJ. Predictive and protective factors associated with colorectal cancer in ulcerative colitis: A case-control study. Gastroenterology. 2006 Jun; 130(7):1941-9. PMID: 16762617.
      View in: PubMed
    52. Jess T, Loftus EV, Velayos F, Harmsen WS, Zinsmeister AR, Smyrk TC, Schleck CD, Tremaine WJ, Melton LJ, Munkholm P, Sandborn WJ. Risk of intestinal cancer in inflammatory bowel disease: a population-based study from olmsted county, Minnesota. Gastroenterology. 2006 Apr; 130(4):1039-46. PMID: 16618397.
      View in: PubMed
    53. Velayos F, Terdiman JP, Walsh JM. Effect of 5-aminosalicylate use on colorectal cancer and dysplasia risk: a systematic review and metaanalysis of observational studies. Am J Gastroenterol. 2005 Jun; 100(6):1345-53. PMID: 15929768.
      View in: PubMed
    54. Velayos F, Allen BA, Conrad PG, Gum J, Kakar S, Chung DC, Truta B, Sleisenger MH, Kim YS, Terdiman JP. Low rate of microsatellite instability in young patients with adenomas: reassessing the Bethesda guidelines. Am J Gastroenterol. 2005 May; 100(5):1143-9. PMID: 15842591.
      View in: PubMed
    55. Velayos F, Lee SH, Qiu H, Dykes S, Yiu R, Terdiman JP, Garcia-Aguilar J. The mechanism of microsatellite instability is different in synchronous and metachronous colorectal cancer. J Gastrointest Surg. 2005 Mar; 9(3):329-35. PMID: 15749592.
      View in: PubMed
    56. Velayos F, Sandborn WJ. Pneumocystis carinii pneumonia during maintenance anti-tumor necrosis factor-alpha therapy with infliximab for Crohn's disease. Inflamm Bowel Dis. 2004 Sep; 10(5):657-60. PMID: 15472531.
      View in: PubMed
    57. Velayos F, Williamson A, Sousa KH, Lung E, Bostrom A, Weber EJ, Ostroff JW, Terdiman JP. Early predictors of severe lower gastrointestinal bleeding and adverse outcomes: a prospective study. Clin Gastroenterol Hepatol. 2004 Jun; 2(6):485-90. PMID: 15181617.
      View in: PubMed
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