Licenses & Certifications:

• Medical Licenses:  NY and VA
  
• Board Certifications: Anatomic Pathology and Clinical Pathology

Education:

Medical Education:

• MD, Yerevan State Medical  University

Postgraduate Medical Training:

• Residency: Lenox Hill Hospital, New York, NY
  
• Neuropathology Fellowship: Montefiore Medical Center, The University Hospital for the Albert Einstein College of Medicine, Bronx, NY
  

Recent Publications:

• Antonescu CR, Besmer P, Guo T, Arkun K, Hom G, Koryotowski B, Leversha MA, Jeffrey PD, Desantis D, Singer S, Brennan MF, Maki RG, DeMatteo RP.  Acquired resistance to imatinib in gastrointestinal stromal tumor occurs through secondary gene mutation.  Clin Cancer Res. 2005 Jun 1;11(11):4182-90.  PMID: 15930355
• Hsu KC, Keever-Taylor CA, Wilton A, Pinto C, Heller G, Arkun K, O'Reilly RJ, Horowitz MM, Dupont B.  Improved outcome in HLA-identical sibling hematopoietic stem-cell transplantation for acute myelogenous leukemia predicted by KIR and HLA genotypes.  Blood. 2005 Jun 15;105(12):4878-84. Epub 2005 Feb 24.  PMID: 15731175
• Agaram NP, Baren A, Arkun K., Dematteo RP, Besmer P, Antonescu CR.  Comparative ultrastructural analysis and KIT/PDGFRA genotype in 125 gastrointestinal stromal tumors.  Ultrastruct Pathol. 2006 Nov-Dec;30(6):443-52.  PMID: 17182437