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Photo of Frederiksen, John Karl

John Karl Frederiksen, MD, PhD

Assistant Professor of Clinical Pathology

Director, Hematology Laboratory

Department of Pathology

Contact

Address:

840 S. Wood St. 130 CSN, MC847, Chicago IL 60612

Office Phone:

312.996.1642

Notable Honors

2019-2020, Best Teacher in the Pathology Residency Program, SUNY Upstate Medical University

2022, Teacher of the Year, Pathology Residency Program, University of Illinois at Chicago

Education

Stanford University (B.S., Chemistry)

University of Chicago Pritzker School of Medicine (M.D.)

University of Chicago (Ph.D., Biochemistry and Molecular Biology)

Post-Graduate Training:

Residency: University of Rochester Medical Center (Anatomic and Clinical Pathology)

Fellowship:

University of Michigan Medical Center (Hematopathology)

University of Miami Miller School of Medicine (Molecular Genetic Pathology)

Licensures and Certifications

Anatomic and Clinical Pathology

Hematology

Molecular Genetic Pathology

Selected Presentations

Qu, C., Kunkalla, K., Vaghefi, A., Frederiksen, J. K., Liu, Y., Chapman, J. R., Blonska, M., Bernal-Mizrachi, L., Alderuccio, J. P., Lossos, I. S., Landgraf, R. & Vega, F. (2018).  Smoothened stabilizes and protects TRAF6 from degradation: A novel non-canonical role of smoothened with implications in lymphoma biology.  Cancer Lett 436, 149-158 (PubMed ID 30165192).

Choi, S. M., Frederiksen, J. K., Ross, C. W., Bixby, D. L. & Shao, L. (2017).  Philadelphia Chromosome-like Mixed-Phenotype Acute Leukemia Demonstrating P2RY8-CRLF2 Fusion and JAK1 Mutation.  Am J Clin Pathol 148, 523-528 (PubMed ID 29140408).

Weindorf, S. C. & Frederiksen, J. K. (2017).  IgG4-Related Disease: A Reminder for Practicing Pathologists.  Arch Pathol Lab Med 141, 1476-1483 (PubMed ID 29072949).

Frederiksen, J. K., Shao, L., Bixby, D. L. & Ross, C. W. (2016).  Shared clonal cytogenetic abnormalities in aberrant mast cells and leukemic myeloid blasts detected by single nucleotide polymorphism microarray-based whole-genome scanning.  Genes Chromosomes Cancer 55, 389-396 (PubMed ID 26865278).

Frederiksen, J. K., Sharma, M., Casulo, C. & Burack, W. R. (2015).  Systematic review of the effectiveness of fine-needle aspiration and/or core needle biopsy for subclassifying lymphoma.  Arch Pathol Lab Med 139, 245-251 (PubMed ID 25611108).

Frederiksen, J. K. & Ross, C. W. (2014).  Cytomegalovirus-associated hemophagocytic lymphohistiocytosis in a patient with myasthenia gravis treated with azathioprine.  Blood 123, 2290 (PubMed ID 24895699).