Education and Training


Postdoctoral Fellow - The Children’s Hospital of Philadelphia, Philadelphia, PA

Graduate Degree

PhD in Biochemistry - Jawaharlal Nehru University, New Delhi, India
MS in Biotechnology - All India Institute of Medical Sciences, New Delhi, India

Titles and Academic Titles

Research Faculty

Research Assistant Professor of Pediatrics, Perelman School of Medicine at the University of Pennsylvania

Departments and Services




Gunaratne, R*., Kumar, S*., Frederiksen, J.W., Stayrook, S., Lohrmann, J.L., Perry, K., Bompiani, K.M., Chabada, C.V., Thalji, N.K., Ho, M.D., Arepally, G., Camire, R.M., Krishnaswamy, K., and Sullenger, B.A. Combination of aptamer and drug for reversible anticoagulation in cardiopulmonary bypass. Nature Biotechnology. Nat Biotechnol. 2018 Aug;36(7):606-613. doi: 10.1038/nbt.4153. Epub 2018 Jun 4.


Sawhney, P., Kumar, S., Maheshwari, N., Guleria, SS., Dhar, N., Kashyup R., and Sahni, G. Site- Specific Thiol-mediated PEGylation of Streptokinase Leads to Improved Properties with Clinical Potential. Current Pharmaceutical Design. 22 (38), 5868-5878, 2016.


Aneja, R.,Datt, M., Singh, B., Kumar, S., and Sahni,G. Identification of a New Exosite Involved in Catalytic Turnover by the Streptokinase-Plasmin Activator Complex during Human Plasminogen Activation. Journal of Biological Chemistry. November 20; 284(47), 32642–32650, 2009.

Awards and Honors

2016, Judith Graham Pool Postdoctoral Research Fellowships Award
2015, ASH, Mary Rodes Gibson Memorial Award in Hemostasis and Thrombosis

Editorial and Academic Positions

Editorial Positions

Ad-hoc Reviewer

2017-present, PLOS One
2013-present, Journal of Thrombosis and Haemostasis
2012-present, Blood
2012-present, Journal of Biological Chemistry

Leadership and Memberships

Memberships in Professional Organizations


2013-present, International Society on Thrombosis and Haemostasis


2013-present, North American Society on Thrombosis and Hemostasis (NASTH)
2011-present, American Society of Hematology