Raj P Kapur, MD, PhD

Raj P Kapur, MD, PhD

Reconstructive Pelvic Medicine, Laboratory Medicine

On staff since November 1992

Children's Title: Program Chief, Perinatal Autopsy; Program Director, Fetal Pathology Service; Program Director of Lab Medicine/Pathology Residency and Fellowship

Academic Title: Professor

Research Center: Center for Integrative Brain Research

  • Patient Testimonials

    • Sumati Seattle, WA 12.23.22

      Dr. Raj Kapur was able to diagnose my infant daughter when no one else could. I can’t imagine this world with her bright smile – due in part to the unseen but very skilled eyes of a pathologist who could see in a slide the tiniest of abnormal newborn neurons. Thank you for your important work. She's a happy, healthy and naughty third grader now.

  • Awards and Honors

    Award Name Award Description Awarded By Award Date
    SEATTLE TOP DOCTOR - 2022 Seattle Magazine 2022
    Seattle Top Doctor - 2019 Seattle Magazine 2019
    SEATTLE'S TOP DOCTOR - 2018 Seattle Magazine 2018
    SEATTLE'S TOP DOCTOR - 2017 Seattle Magazine 2017
    SEATTLE MAGAZINE TOP DOCTOR - 2016 Seattle Magazine 2016
  • Publications

    Other Publications

    • Kapur RP, Reyes-Mugica M
      Intestinal Neuronal Dysplasia Type B: An Updated Review of a Problematic Diagnosis.
      30088780 Archives of pathology & laboratory medicine, 2019 Feb. : 143(2)235-243
    • Kapur RP, Arnold MA, Conces MR, Ambartsumyan L, Avansino J, Levitt M, Wood R, Mast KJ
      Remodeling of Rectal Innervation After Pullthrough Surgery for Hirschsprung Disease: Relevance to Criteria for the Determination of Retained Transition ZoneDisease
      Remodeling of Rectal Innervation After Pullthrough Surgery for Hirschsprung Disease: Relevance to Criteria for the Determination of Retained Transition Zone, 2018 Dec 12 - 2018 Dec 12
      Kapur RP, Arnold MA, Conces MR, Ambartsumyan L, Avansino J, Levitt M, Wood R, Mast KJ. Remodeling of Rectal Innervation After Pullthrough Surgery for Hirschsprung Disease: Relevance to Criteria for the Determination of Retained Transition Zone. Pediatr Dev Pathol. 2018 Dec 12:1093526618817658. doi: 10.1177/1093526618817658. [Epub ahead of print] PubMed PMID: 30541422.
    • Kapur RP, Arnold MA, Conces MR, Ambartsumyan L, Avansino J, Levitt M, Wood R, Mast KJ
      Remodeling of Rectal Innervation After Pullthrough Surgery for Hirschsprung Disease: Relevance to Criteria for the Determination of Retained Transition Zone.
      30541422 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2018 Dec 12 : 1093526618817658
    • Kapur RP, Arnold MA, Conces MR, Ambartsumyan L, Avansino J, Levitt M, Wood R, Mast KJ
      Remodeling of Rectal Innervation After Pullthrough Surgery for Hirschsprung Disease: Relevance to Criteria for the Determination of Retained Transition Zone.
      30541422 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2018 Dec 12 : 1093526618817658
    • Appelbaum J, Wells D, Hiatt JB, Steinbach G, Stewart FM, Thomas H, Nghiem P, Kapur RP, Thompson JA, Bhatia S
      Fatal enteric plexus neuropathy after one dose of ipilimumab plus nivolumab: a case report.
      30170630 Journal for immunotherapy of cancer, 2018 Aug 31 : 6(1)82 PMCID:PMC6117974
    • Gray MJ, Kannu P, Sharma S, Neyt C, Zhang D, Paria N, Daniel PB, Whetstone H, Sprenger HG, Hammerschmidt P, Weng A, Dupuis L, Jobling R, Mendoza-Londono R, Dray M, Su P, Wilson MJ, Kapur RP, McCarthy EF, Alman BA, Howard A, Somers GR, Marshall CR, Manners S, Flanagan AM, Rathjen KE, Karol LA, Crawford H, Markie DM, Rios JJ, Wise CA, Robertson SP
      Mutations Preventing Regulated Exon Skipping in MET Cause Osteofibrous Dysplasia.
      26637977 American journal of human genetics, 2015 Dec 3 : 97(6)837-47 PMCID:PMC4678433
    • Swaminathan M, Oron AP, Chatterjee S, Piper H, Cope-Yokoyama S, Chakravarti A, Kapur RP
      Intestinal Neuronal Dysplasia-Like Submucosal Ganglion Cell Hyperplasia at the Proximal Margins of Hirschsprung Disease Resections.
      26699691 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2015 Nov. : 18(6)466-76
    • Swaminathan M, Oron AP, Chatterjee S, Piper H, Cope-Yokoyama S, Chakravarti A, Kapur RP
      Intestinal Neuronal Dysplasia-Like Submucosal Ganglion Cell Hyperplasia at the Proximal Margins of Hirschsprung Disease Resections.
      26699691 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2015 Nov. : 18(6)466-76
    • Weldin JD, Kapur RP, Lewin MB, McMullan DM
      Fatal spontaneous dissection of a Contegra conduit in a child.
      25742831 The Annals of thoracic surgery, 2015 March : 99(3)1062-4
    • Kapur RP, Berry JE, Tsuchiya KD, Opheim KE
      Activation of the chromosome 19q microRNA cluster in sporadic and androgenetic-biparental mosaicism-associated hepatic mesenchymal hamartoma.
      24555441 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2014 March : 17(2)75-84
    • Qin X, Zerr DM, McNutt MA, Berry JE, Burns JL, Kapur RP
      Pseudomonas aeruginosa syntrophy in chronically colonized airways of cystic fibrosis patients.
      22964251 Antimicrobial agents and chemotherapy, 2012 Nov. : 56(11)5971-81 PMCID:PMC3486535
    • McAdams RM, Vanderhoeven J, Beyer RP, Bammler TK, Farin FM, Liggitt HD, Kapur RP, Gravett MG, Rubens CE, Adams Waldorf KM
      Choriodecidual infection downregulates angiogenesis and morphogenesis pathways in fetal lungs from Macaca nemestrina.
      23056493 PloS one, 2012 : 7(10)e46863 PMCID:PMC3467273
    • Kapur RP, Robertson SP, Hannibal MC, Finn LS, Morgan T, van Kogelenberg M, Loren DJ
      Diffuse abnormal layering of small intestinal smooth muscle is present in patients with FLNA mutations and x-linked intestinal pseudo-obstruction.
      20871226 The American journal of surgical pathology, 2010 Oct. : 1528-43
    • Juric-Sekhar G, Kapur RP, Glass IA, Murray ML, Parnell SE, Hevner RF
      Neuronal migration disorders in microcephalic osteodysplastic primordial dwarfism type I/III.
      20857301 Acta neuropathologica, 2010 Sep 21
    • Kapur RP
      Pathology of Intestinal Motor Disorders in Children.
      26839228 Surgical pathology clinics, 2010 Sept. : 3(3)711-41
    • Swaminathan M, Kapur RP
      Counting myenteric ganglion cells in histologic sections: an empirical approach.
      20346481 Human pathology, 2010 Aug. : 1097-108
    • Swaminathan M, Kapur RP
      Counting myenteric ganglion cells in histologic sections: an empirical approach.
      20346481 Human pathology, 2010 Aug. : 41(8)1097-108
    • Knowles CH, De Giorgio R, Kapur RP, Bruder E, Farrugia G, Geboes K, Lindberg G, Martin JE, Meier-Ruge WA, Milla PJ, Smith VV, Vandervinden JM, Veress B, Wedel T
      The London Classification of gastrointestinal neuromuscular pathology: report on behalf of the Gastro 2009 International Working Group.
      20581236 Gut, 2010 July : 882-7
    • Quintana A, Kruse SE, Kapur RP, Sanz E, Palmiter RD
      Complex I deficiency due to loss of Ndufs4 in the brain results in progressive encephalopathy resembling Leigh syndrome.
      20534480 Proceedings of the National Academy of Sciences of the United States of America, 2010 Jun 15 : 10996-1001
    • Rudzinski ER, Kapur RP, Hevner RF
      Fetal akinesia deformation sequence with delayed skeletal muscle maturation and polymicrogyria: evidence for a hypoxic/ischemic pathogenesis.
      19968489 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2010 May : 192-201
    • Rudzinski E, Kapur RP
      PHOX2B Immunolocalization of the Candidate Human Retrotrapezoid Nucleus.
      19888871 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2009 Nov 4
    • Kapur RP
      Practical pathology and genetics of Hirschsprung's disease.
      19782303 Seminars in pediatric surgery, 2009 Nov. : 212-23
    • Knowles CH, De Giorgio R, Kapur RP, Bruder E, Farrugia G, Geboes K, Gershon MD, Hutson J, Lindberg G, Martin JE, Meier-Ruge WA, Milla PJ, Smith VV, Vandervinden JM, Veress B, Wedel T
      Gastrointestinal neuromuscular pathology: guidelines for histological techniques and reporting on behalf of the Gastro 2009 International Working Group.
      19360428 Acta neuropathologica, 2009 Aug. : 118(2)271-301
    • Knowles CH, De Giorgio R, Kapur RP, Bruder E, Farrugia G, Geboes K, Gershon MD, Hutson J, Lindberg G, Martin JE, Meier-Ruge WA, Milla PJ, Smith VV, Vandervinden JM, Veress B, Wedel T
      Gastrointestinal neuromuscular pathology: guidelines for histological techniques and reporting on behalf of the Gastro 2009 International Working Group.
      19360428 Acta neuropathologica, 2009 Aug. : 271-301
    • Suskind D, Wahbeh G, Murray K, Christie D, Kapur RP
      Collagenous gastritis, a new spectrum of disease in pediatric patients: two case reports.
      19829984 Cases journal, 2009 Jun 10 : 7511
    • Kapur RP, Correa H
      Architectural malformation of the muscularis propria as a cause for intestinal pseudo-obstruction: two cases and a review of the literature.
      18788889 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2009 March : 156-64
    • Kapur RP, Reed RC, Finn LS, Patterson K, Johanson J, Rutledge JC
      Calretinin immunohistochemistry versus acetylcholinesterase histochemistry in the evaluation of suction rectal biopsies for Hirschsprung Disease.
      18442301 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2009 Jan. : 6-15
    • Weiss AH, Kelly JP, Kapur RP, Pendergrass T
      Retinal function and corresponding pathology in advanced retinoblastoma.
      19001217 Archives of ophthalmology (Chicago, Ill. : 1960), 2008 Nov. : 126(11)1507-12
    • Weiss AH, Kelly JP, Kapur RP, Pendergrass T
      Retinal function and corresponding pathology in advanced retinoblastoma.
      19001217 Archives of ophthalmology, 2008 Nov. : 1507-12
    • Reed RC, Beischel L, Schoof J, Johnson J, Raff ML, Kapur RP
      Androgenetic/biparental mosaicism in an infant with hepatic mesenchymal hamartoma and placental mesenchymal dysplasia.
      18260692 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2008 Sept. : 377-83
    • Reed RC, Kapur RP
      Hepatic mesenchymal hamartoma: a disorder of imprinting.
      17990933 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2008 July : 264-5
    • Kruse SE, Watt WC, Marcinek DJ, Kapur RP, Schenkman KA, Palmiter RD
      Mice with mitochondrial complex I deficiency develop a fatal encephalomyopathy.
      18396137 Cell metabolism, 2008 April : 312-20
    • Mascher-Denen M, McPherson RJ, Kapur RP, Juul SE
      Characterization of developing bowel transplanted from transgenic erythropoietin receptor-deficient mouse embryos.
      17664892 Neonatology, 2008 : 56-63
    • Mascher-Denen M, McPherson RJ, Kapur RP, Juul SE
      Characterization of developing bowel transplanted from transgenic erythropoietin receptor-deficient mouse embryos.
      17664892 Neonatology, 2008 : 93(1)56-63
    • Clarke CM, Plata C, Cole B, Tsuchiya K, La Spada AR, Kapur RP
      Visceral neuropathy and intestinal pseudo-obstruction in a murine model of a nuclear inclusion disease.
      18054568 Gastroenterology, 2007 Dec. : 1971-8
    • Mefford HC, Clauin S, Sharp AJ, Moller RS, Ullmann R, Kapur R, Pinkel D, Cooper GM, Ventura M, Ropers HH, Tommerup N, Eichler EE, Bellanne-Chantelot C
      Recurrent reciprocal genomic rearrangements of 17q12 are associated with renal disease, diabetes, and epilepsy.
      17924346 American journal of human genetics, 2007 Nov. : 81(5)1057-69 PMCID:PMC2265663
    • Kapur RP
      Achondrogenesis.
      17638434 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2007 July : 253-5
    • Souter VL, Parisi MA, Nyholt DR, Kapur RP, Henders AK, Opheim KE, Gunther DF, Mitchell ME, Glass IA, Montgomery GW
      A case of true hermaphroditism reveals an unusual mechanism of twinning.
      17165045 Human genetics, 2007 April : 179-85
    • Hnasko TS, Hnasko RM, Sotak BN, Kapur RP, Palmiter RD
      Genetic disruption of dopamine production results in pituitary adenomas and severe prolactinemia.
      17622754 Neuroendocrinology, 2007 : 48-57
    • Meier-Ruge WA, Bruder E, Kapur RP
      Intestinal neuronal dysplasia type B: one giant ganglion is not good enough.
      17163795 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2006 Nov. : 444-52
    • Kapur RP
      Does bcl2 immunostaining really help with pathological evaluation of intestinal pseudo-obstruction?
      16861987 The American journal of surgical pathology, 2006 Aug. : 1059; author reply 1059-62
    • Kapur RP
      Can we stop looking? Immunohistochemistry and the diagnosis of Hirschsprung disease.
      16753604 American journal of clinical pathology, 2006 July : 9-12
    • Howe DG, Clarke CM, Yan H, Willis BS, Schneider DA, McKnight GS, Kapur RP
      Inhibition of protein kinase A in murine enteric neurons causes lethal intestinal pseudo-obstruction.
      16329126 Journal of neurobiology, 2006 Feb 15 : 256-72
    • Parisi MA, Lipman NS, Clarke CM, Taylor B, Kapur RP
      Evaluation of Hox11L1 in the fmc/fmc rat model of chronic intestinal pseudo-obstruction.
      16291166 Journal of pediatric surgery, 2005 Nov. : 40(11)1760-5
    • Parisi MA, Lipman NS, Clarke CM, Taylor B, Kapur RP
      Evaluation of Hox11L1 in the fmc/fmc rat model of chronic intestinal pseudo-obstruction.
      16291166 Journal of pediatric surgery, 2005 Nov. : 40(11)1760-5
    • Parisi MA, Lipman NS, Clarke CM, Taylor B, Kapur RP
      Evaluation of Hox11L1 in the fmc/fmc rat model of chronic intestinal pseudo-obstruction.
      16291166 Journal of pediatric surgery, 2005 Nov. : 1760-5
    • Kapur RP
      Multiple endocrine neoplasia type 2B and Hirschsprung's disease.
      15880310 Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 2005 May : 423-31
    • Siebert JR, Schoenecker KA, Resta RG, Kapur RP
      Holoprosencephaly and limb reduction defects: a consideration of Steinfeld syndrome and related conditions.
      15779021 American journal of medical genetics. Part A, 2005 May 1 : 381-92
    • Duthie MS, Kahn M, White M, Kapur RP, Kahn SJ
      Both CD1d antigen presentation and interleukin-12 are required to activate natural killer T cells during Trypanosoma cruzi infection.
      15731095 Infection and immunity, 2005 March : 1890-4
    • Kapur RP, Clarke CM, Doggett B, Taylor BE, Baldessari A, Parisi MA, Howe DG
      Hox11L1 expression by precursors of enteric smooth muscle: an alternative explanation for megacecum in HOX11L1-/- mice.
      15803212 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2005 March : 148-61
    • Duthie MS, Kahn M, White M, Kapur RP, Kahn SJ
      Critical proinflammatory and anti-inflammatory functions of different subsets of CD1d-restricted natural killer T cells during Trypanosoma cruzi infection.
      15618153 Infection and immunity, 2005 Jan. : 181-92
    • Siebert JR, Kapur RP, Resta RG, Luthy D
      Methods for induced abortion.
      15625178 Obstetrics and gynecology, 2005 Jan. : 221; author reply 221-2
    • Kapur RP, Yao Z, Iida MH, Clarke CM, Doggett B, Xing L, Boyce BF
      Malignant autosomal recessive osteopetrosis caused by spontaneous mutation of murine Rank.
      15355564 Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 2004 Oct. : 1689-97
    • Kapur RP, Yao Z, Iida MH, Clarke CM, Doggett B, Xing L, Boyce BF
      Malignant autosomal recessive osteopetrosis caused by spontaneous mutation of murine Rank.
      15355564 Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 2004 Oct. : 19(10)1689-97
    • White S, Siebert JR, Kapur RP
      Pathologic quiz case: a 10-year-old boy with weakness, lethargy, and edema. Arrhythmogenic right ventricular cardiomyopathy, cardiomyopathic pattern.
      15163224 Archives of pathology and laboratory medicine, 2004 June : 128(6)700-2
    • Clancy RM, Kapur RP, Molad Y, Askanase AD, Buyon JP
      Immunohistologic evidence supports apoptosis, IgG deposition, and novel macrophage/fibroblast crosstalk in the pathologic cascade leading to congenital heart block.
      14730614 Arthritis and rheumatism, 2004 Jan. : 173-82
    • Parisi MA, Baldessari AE, Iida MH, Clarke CM, Doggett B, Shirasawa S, Kapur RP
      Genetic background modifies intestinal pseudo-obstruction and the expression of a reporter gene in Hox11L1-/- mice.
      14598259 Gastroenterology, 2003 Nov. : 1428-40
    • Weldin J, Jack R, Dugaw K, Kapur RP
      Quercetin, an over-the-counter supplement, causes neuroblastoma-like elevation of plasma homovanillic acid.
      15018454 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2003 Nov. : 547-51
    • Kapur RP
      Neuronal dysplasia: a controversial pathological correlate of intestinal pseudo-obstruction.
      14518065 American journal of medical genetics. Part A, 2003 Nov 1 : 287-93
    • Clancy RM, Backer CB, Yin X, Kapur RP, Molad Y, Buyon JP
      Cytokine polymorphisms and histologic expression in autopsy studies: contribution of TNF-alpha and TGF-beta 1 to the pathogenesis of autoimmune-associated congenital heart block.
      12960355 Journal of immunology (Baltimore, Md. : 1950), 2003 Sep 15 : 3253-61
    • Souter VL, Kapur RP, Nyholt DR, Skogerboe K, Myerson D, Ton CC, Opheim KE, Easterling TR, Shields LE, Montgomery GW, Glass IA
      A report of dizygous monochorionic twins.
      12853588 The New England journal of medicine, 2003 Jul 10 : 154-8
    • Faye-Petersen OM, Kapur RP
      A little bit of everything: molecular genetics of congenital hyperinsulinism.
      12469235 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2003 Jan. : 6(1)3-5
    • Faye-Petersen OM, Kapur RP
      A little bit of everything: molecular genetics of congenital hyperinsulinism.
      12469235 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2003 Jan. : 6(1)3-5
    • Faye-Petersen OM, Kapur RP
      A little bit of everything: molecular genetics of congenital hyperinsulinism.
      12469235 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2003 Jan. : 3-5
    • Siebert JR, Kapur RP
      Rulers rule: present and future applications of cerebellar morphometry.
      12192428 Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 2002 Sept. : 422-4
    • Clancy RM, Askanase AD, Kapur RP, Chiopelas E, Azar N, Miranda-Carus ME, Buyon JP
      Transdifferentiation of cardiac fibroblasts, a fetal factor in anti-SSA/Ro-SSB/La antibody-mediated congenital heart block.
      12165545 Journal of immunology (Baltimore, Md. : 1950), 2002 Aug 15 : 2156-63
    • Parisi MA, Kapur RP, Neilson I, Hofstra RM, Holloway LW, Michaelis RC, Leppig KA
      Hydrocephalus and intestinal aganglionosis: is L1CAM a modifier gene in Hirschsprung disease?
      11857550 American journal of medical genetics, 2002 Feb 15 : 51-6
    • Appelbaum J, Wells D, Hiatt JB, Steinbach G, Stewart FM, Thomas H, Nghiem P, Kapur RP, Thompson JA, Bhatia S
      Fatal enteric plexus neuropathy after one dose of ipilimumab plus nivolumab: a case report. J Immunother Cancer
      2018
      Appelbaum J, Wells D, Hiatt JB, Steinbach G, Stewart FM, Thomas H, Nghiem P, Kapur RP, Thompson JA, Bhatia S. Fatal enteric plexus neuropathy after one dose of ipilimumab plus nivolumab: a case report. J Immunother Cancer. 2018 Aug 31;6(1):82. doi: 10.1186/s40425-018-0396-9. PubMed PMID: 30170630; PubMed Central PMCID: PMC6117974.

Overview

Board Certification(s)

Pathology - Anatomic
Pathology - Pediatric

Medical/Professional School

University of Southern California, Los Angeles, CA

Residency

University of Washington School of Medicine, Seattle, WA

Fellowship

Seattle Children's Hospital, Seattle, WA

Clinical Interests

Hirschsprung disease and related disorders, Fetal pathology

Research Focus Area

Translational Research