Skip Navigation
Find a Doctor


Photo of Dr. Lois Arend

Lois Johanna Arend, MD PhD

Director, Pathology Clinical Fellowship Programs
Associate Professor of Pathology
Appointment Phone


Main Location

The Johns Hopkins Hospital

View All Locations
Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »


  • Director, Pathology Clinical Fellowship Programs
  • Program Director, Renal Pathology Fellowship Training Program
  • Associate Professor of Pathology

Centers & Institutes

  • Comprehensive Transplant Center


Pathology, Transplant Pathology

Research Interests

Renal pathology


Dr. Lois Arend is an associate professor of pathology at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include renal pathology and transplant pathology. Dr. Arend serves as the program director of the renal pathology fellowship training program and director of clincial fellowships.

Dr. Arend earned her Ph.D. and M.D. from Michigan State University. She completed her residency in pathology and performed a fellowship in renal pathology at the University of Michigan Medical School.

Her research interests include the mechanisms of mammalian kidney development, transplant pathology, and renal pathology.


  • English
Additional Resources +
  • Education +


    • Michigan State University Medical Education and Research Center (Grand Rapids MI ) (1992)


    • University of Michigan Medical School / Pathology (Ann Arbor MI ) (1996)


    • University of Michigan Medical School / Pathology (Ann Arbor MI ) (1998)


    • Anatomic Pathology, American Board of Pathology (1985)
  • Research & Publications +

    Research Summary

    Dr. Arend's laboratory studies the mechanisms of mammalian kidney development. Specifically, their studies involve various cell and molecular biology techniques to determine the role of the bioactive sphingolipid, sphingosine-1-phosphate (S1P), in organogenesis of the kidney. Their research indicates that S1P may be involved in development of conditions such as cystic kidney disease and Meckel syndrome. They also study the pathologic aspects of other kidney disease by various morphologic techniques, including light, immunofluorescence and electron microscopy.

    Selected Publications

    1. Nie X, Arend LJ. Novel roles of Pkd2 in male reproductive system development. Differentiation. 2014 March–April; 87(3–4): 161–171.
    2. Nie X, Arend LJ. Pkd1is required for male reproductive tract development. Mech Dev. 2013 Nov-Dec;130(11-12):567-76.
    3. Kirby RJ, Jin Y, Fu J, Cubillos J, Swertfeger D, Arend LJ. "Dynamic regulation of sphingosine-1-phosphate homeostasis during development of mouse metanephric kidney." Am J Physiol Renal Physiol. 2009 Mar;296(3):F634-41. doi: 10.1152/ajprenal.90232.2008. Epub 2008 Dec 10.
    4. Lorenz JN, Arend LJ, Robitz R, Paul RJ, MacLennan AJ. "Vascular dysfunction in S1P2 sphingosine 1-phosphate receptor knockout mice." Am J Physiol Regul Integr Comp Physiol. 2007 Jan;292(1):R440-6. Epub 2006 Sep 21.
    5. Fu J, Jin Y, Arend LJ. "Smac3, a novel Smac/DIABLO splicing variant, attenuates the stability and apoptosis-inhibiting activity of X-linked inhibitor of apoptosis protein." J Biol Chem. 2003 Dec 26;278(52):52660-72. Epub 2003 Sep 30.
    6. Phillips CL, Arend LJ, Filson AJ, Kojetin DJ, Clendenon JL, Fang S, Dunn KW. "Three-dimensional imaging of embryonic mouse kidney by two-photon microscopy." Am J Pathol. 2001 Jan;158(1):49-55.
    7. Arend LJ, Smart AM, Briggs JP. "Mouse beta(6) integrin sequence, pattern of expression, and role in kidney development." J Am Soc Nephrol. 2000 Dec;11(12):2297-305.
    8. Arend LJ, Smart A, Briggs JP. "Metanephric rat-mouse chimeras to study cell lineage of the nephron." Dev Genet. 1999;24(3-4):230-40.
  • Academic Affiliations & Courses +
  • Activities & Honors +

    Professional Activities

    Leadership Program for Women Faculty, 2012 - 2013

  • Videos & Media +
  • Events +
  • Contact & Locations +


    The Johns Hopkins Hospital
    600 N. Wolfe Street
    Sheikh Zayed Tower
    Baltimore, MD 21287
    Phone: 443-287-0166
    Appointment Phone: 410-955-2386
    Location Map


    • Pathology

Is This You? Edit Profile


© The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.